Answers
Answer:
Increasing
Explanation:
This particular question or problem can be likened to a deductive reasoning. The viral disease known as HIV stand for Human Immunodeficiency Virus which is a disease that damages the immune system of anyone affected with the disease. The Human Immunodeficiency Virus goes through four main stages or steps that is to say the infection stage/step, the stages in which the symptoms does not show, the stages at which the symptoms start to show and the stage at which the Human Immunodeficiency Virus goes or turns to AIDS.
The frequencies of these "resistance genes" In human populations where HIV infection is common will increase. When Human Immunodeficiency Virus infection is common, people in that particular society will develop more resistance to the virus and the survival of the fittest is taken into account as people with more resistance tends to be more healthier than the ones with less resistance.
Related Questions
Which of the following muscles does not attach to the scapula?
A. Biceps
B. Deltoid
C. Trapezius
D. Rectus Abdominus
E. Pectoralis major
Answers
Answer:
D. Rectus Abdominus
Explanation:
The scapula is the scientific term for the shoulder blade.
The biceps are the muscles in the upper arm that connect to the shoulder.
The deltoids are the triangular shoulder muscles.
The trapezius moves the shoulder blade and supports the arm.
The rectus abdominis runs vertically on each side of the abdomen
The pectoralis major is the main chest muscle (pecs)
The only muscle not in the vicinity of the shoulder blade is the Rectus Abdominus
Which of these is selectively permeable?
a.
door
c.
wall
b.
window screen
d.
mirror
Please select the best answer from the choices provided
A
B
C
D
Answers
Answer:
Door
is a selectively permeable
hope it helps
Which letter indicates where the moon would be located during a lunar eclipse?
A. Position M
B. Position P
C. Position N
D. Position O
Answers
Answer:
B. Position P
Explanation:
If it is at "Position P", the Earth blocks the moon from the light from the sun, creating an eclipse.
Position P indicates the location of moon during a lunar eclipse. Hence, the correct statement is option B.
What is lunar eclipse?A lunar eclipse is a celestial event that occurs during a full moon phase when the Earth passes between the Sun and the Moon, thereby, casting its shadow on the Moon which makes the moon a reddish-brown or coppery color, hence the moon is called "blood moon" during lunar eclipse.
A lunar eclipse only occurs when the Moon is in full phase and aligned with the Earth and Sun and can be visible from anywhere on the Earth. The lunar eclipse can last for several hours.
During a lunar eclipse, when Earth passes between the sun and the moon, it casts its shadow on the moon. The point at the moon's orbit where it is passing through the Earth's shadow is represented by position P which results in lunar eclipse.
Therefore, Position P indicates where the moon would be located during a lunar eclipse.
Learn more about the lunar eclipse here:
https://brainly.com/question/29775053
#SPJ2
Identify the choice that best completes the statement or answers the question.
A scientist analyzes a fossil found in the limestone layer of Mountain A. By applying the technique of radiometric dating to the fossil, the scientist concludes that the limestone formed approximately 1.34 billion years ago.
Which two assumptions are necessary to support the scientist's conclusion? Select the two correct answers.
options:
After the fossil formed, all of its radioactive isotopes decayed very quickly.
Radioactive isotopes decay at a constant rate over long spans of time.
The fossil formed at the same time as the limestone surrounding it.
The fossil formed from the same materials as the limestone surrounding it.
After the limestone formed, chemical and physical processes affected it only minimally.
Answers
The correct answers are: Over extended periods of time, radioactive isotopes degrade at a consistent rate.
The limestone around the fossil also formed at the same time.
Radiometric datingThe age of a material can be ascertained via radiometric dating by observing the decay of its radioactive isotopes. In the case of the limestone layer discovered in Mountain A, a scientist used radiometric dating to examine a fossil discovered within the layer and came to the conclusion that the limestone originated about 1.34 billion years ago. Two premises are required for the validity of this conclusion. Secondly, a key tenet of radiometric dating is that radioactive isotopes decay over extended periods of time at a constant rate. Second, it is assumed that there were no significant alterations or disturbances to the stratum following its formation because the fossil formed concurrently with the limestone that surrounded it.learn more about fossils here
https://brainly.com/question/19083813
#SPJ1
(BRAINLIEST will be given)
True or False:
Once plastic has broken down
into very small pieces, it is no longer
harmful to organisms.
Answers
Answer:
False: Once plastics have been broken down into very small pieces (smaller than 5 millimeters long) they are then classifided as microplastics. Microplastics are tiny plastic particles that result from both commercial product development and the breakdown of larger plastics. As a pollutant, microplastics can be harmful to the environment and animal health.
Explanation:
I hope this helps!
A cell is a system of parts that work together to carry out basic life processes. An animal is also a system of parts that work together to carry out basic life processes. Match each organ or organ system with the cell part that has a similar function.
Answers
Answer:
Nucleus - brain
cell membrane - skeletal system
mitochondria - digestive system
cell wall - skin
Explanation:
hope that helps!
Not all cells have a cell membrane. True False
Answers
True
Explanation:All cells have cell membranes. There are variations between cell membranes, but the same basic structure exists in all cells.
hope this help! ^^
A sample of milk is tested for its bacterial content in a plate count assay. A one-milliliter sample of the milk is diluted in a 1:10 dilution series. One milliliter of the third dilution tube is plated in a pour plate. After incubation, the plate has 54 colonies, indicating that the original milk sample contained how many CFU/ml?
Answers
After incubation, the plate has 54 colonies, indicating that the original Milk sample contained 540,000 CFU/ml.
The equation for calculating the CFU/mL in the original sample is:
CFU/mL = (number of colonies on plate x dilution factor) / volume of the culture plated
Here,
Number of colonies on plate = 54
Volume of the culture plated = 1 mL
The original sample is serially diluted in a proportion of 1:10, that is 1/10
So the dilution of first tube = 1/10
From the first tube, the culture in again diluted in a proportion of 1:10
So, Dilution of second tube = 1/10
The total dilution of tube 2 will be the product of the dilution of tube 1 and tube 2.
So, total dilution of tube 2 = 1/10 x 1/10 = 1/100
Similarly, the total dilution of tube 3 will be 1/1000 and tube 4 will be 1/10000
The sample is plated from tube 4, and therefore the total dilution of tube 4 is used for the calculation of bacterial concentration.
Dilution factor = Reciprocal of dilution
So, dilution factor of tube 4 = 10000 = 104
Substitute the values in the equation:
CFU/mL = ( 54 x 104) / 1 = 54 x 104 = 540000 cells/mL
To learn more about Bacterial concentration
https://brainly.com/question/9732548
#SPJ4
Jake has become very anxious ever since he started taking harder classes in his major.
The university's counselor diagnosed him with an anxiety disorder. Compare and contrast how the behavioral, humanistic, and cognitive approaches would view the origins and treatment of Jake's anxiety. Then, describe how psychologists view each of
the three approaches today."
Answers
The behavioral, humanistic, and cognitive approaches provide different perspectives on the origins and treatment of Jake's anxiety.
The behavioral approach would view Jake's anxiety as a learned response that has been reinforced over time. They might suggest that Jake's anxiety is a result of negative experiences or associations with his academic performance, leading to increased anxiety symptoms. Treatment would focus on identifying and modifying maladaptive behaviors through techniques such as exposure therapy and behavior modification.
The humanistic approach would emphasize Jake's self-actualization and personal growth. They might view his anxiety as a result of a discrepancy between his self-concept and the challenges he is facing in his major.
Treatment would involve providing a supportive and empathetic environment where Jake can explore his feelings and values, with the goal of helping him align his personal goals with his academic pursuits.
The cognitive approach would focus on Jake's thoughts and beliefs about his academic performance. They would suggest that his anxiety stems from negative and distorted thinking patterns, such as excessive self-criticism or catastrophic thinking.
Treatment would involve cognitive restructuring, helping Jake identify and challenge irrational thoughts, and developing more adaptive and realistic thinking patterns.
In contemporary psychology, these approaches are not seen as mutually exclusive, but rather complementary. Psychologists recognize that a multidimensional approach, integrating elements from different perspectives, can provide a more comprehensive understanding of psychological issues.
Treatment approaches often combine techniques from various approaches to address the unique needs of each individual, emphasizing a holistic and personalized approach to mental health.
For more such answers on Anxiety
https://brainly.com/question/14015501
#SPJ8
B. Liverworts (Hepatophyta)
1. Observe the living green "leafy" gametophyte stage at Station A. These organisms have leaf-
like, stem-like, and root-like structures. Draw and label structures of the liverworts. Be sure
to include labels of the following items: gametophyte, n, sporophyte, 2n, rhizoides, leaf-like
structures, and thallus.
2. Use the dissecting scope and look at the sporophyte, gametophore, rhizoides, and thallus.
What do you notice? Write down some observations of each.
3. Compare the moss to the liverworts. How are they similar and how are they different?
Answers
Answer:
Explanation:
Title: Observation of Liverworts (Hepatophyta)
Objective: To observe the living green "leafy" gametophyte stage of liverworts and compare them with moss.
Hypothesis: Liverworts and moss may share some similarities in structure, but there may be significant differences between them.
Observations:
Liverworts Structures:
Gametophyte: The main plant body of the liverwort, which is haploid (n) and produces gametes.
Sporophyte: A structure that grows from the gametophyte and produces spores. It is diploid (2n).
Rhizoides: Root-like structures that anchor the gametophyte to the substrate and absorb water and nutrients.
Leaf-like structures: Flattened structures that resemble leaves but do not have true veins or stomata.
Thallus: The entire plant body of the gametophyte, which lacks true stems or roots.
Observations of different structures in liverworts:
Sporophyte: Small and inconspicuous, growing from the gametophyte.
Gametophore: The stem-like structure that supports the gametophyte and sporophyte.
Rhizoides: Thread-like structures that attach the gametophyte to the substrate and absorb water and nutrients.
Thallus: The plant body of the gametophyte that lacks true stems or roots.
Comparison between liverworts and moss:
Similarities:
Both are non-vascular plants.
Both have a haploid (n) gametophyte and a diploid (2n) sporophyte stage.
Both reproduce by spores and require water for fertilization.
Differences:
Liverworts have leaf-like structures and a thallus, while mosses have true leaves and stems.
Liverwort sporophytes are small and inconspicuous, while moss sporophytes are tall and conspicuous.
Liverworts have rhizoides, while mosses have true roots.
why Guainen (G) is always paired with cytosine (C) with triple bond and so Adenine with Thymine with double bonds?
Answers
Answer:
In DNA and RNA, guanine forms three hydrogen bonds with cytosine. Three bonds are formed between these bases as a result of the fact that guanine possesses two nitrogen and one oxygen atoms that can form hydrogen bonds. Given the spatial restrictions of the double helix, which call for there to be one purine and one pyrimidine in each base pair, A always pairs with T and G always pairs with C as these are the only combinations that for hydrogen bonding to take place.
Blood cells have a rigid cell wall?
Answers
Answer:
No the cell wall is only found in plants
Explanation:
3.Imagine a world where there were no more bees. What might happen if this came true? How would your life be different?
Answers
Bees main function in the ecosytem is pollination. Pollination is a way to to transfer pollen from the male to female reproductive system. It is also considered as food production and thereby give security to food and nutrition. By this process, the ecosystem will be maintained and different species will be also protected.
Sooooooooooooooooooooooooooooo
Answers
Answer:
d. carbohydrates
Explanation:
The products of this equation actually belong to carbohydrates.
Carbohydrates are known to be a large group of organic compounds which is seen in foods and living tissues. Carbohydrates usually contain hydrogen and carbon and are in the ratio 2:1. When broken down, it releases energy which animals use for work.
Two known common carbohydrates are the starch and cellulose. They are macromolecules and are also polymers. Their monomers are units of sugar (glucose). Carbohydrates have the general molecular formula Cm(H2O)n (where m and n represent numbers).
i really need help sap
Answers
Answer:
I do not think there are any, in this case, it says to submit answer.
Explanation:
As you study a cell under a microscope, you observe a nucleus and a large vacuole. What features would
you look for to decide what type of eukaryotic cell this is?
a. cell membrane and vesicles
b. cell wall and chloroplasts
smooth E.R. and rough E.R.
d. lysosomes and mitochondria
Answers
Answer: C
Explanation:
The answer is c. Smooth ER and Rough ER. Smooth ER is a type of organelle found in the cytoplasm of eukaryotic cells, and appears smooth and tubular under the microscope. It is responsible for the synthesis and modification of lipids, hormones, and carbohydrates. Rough ER is a type of organelle found in the cytoplasm of eukaryotic cells, and appears granular and ribosome-studded under the microscope. It is responsible for the modification and transport of proteins. By looking for the presence of both of these organelles, we can determine what type of eukaryotic cell this is.
The food components gradually gets digested as food travels through the various components of alimentary canal. The digested food can pass into the blood vessels in the walls of the small intestine. The digestive system consists ofSingle choice.
(a) Digestive tract
(b) Digestive tract and liver
(c)Digestive tract and pancreas
(d) Digestive tract and the associated glands
pls answer
Answers
Answer:
(b) Digestive tract and liver
Explanation:
The digestive system consists of the digestive tract and liver. The digestive tract is made up of a large number of parts. These parts include the esophagus, stomach, intestines, rectum, etc. Food enters the mouth and travels down the digestive tract and out passing the rectum. The liver is where the blood passes through and it is responsible for many functions such as the metabolizing of fats and proteins, separating and storing vitamins and minerals, regulating different chemicals found in the blood, etc.
Mr. Yien reports to the clinic after having passed reddish- colored urine this morning. He reports that he has been feeling very fatigued for several weeks and hasn't been urinating as much as usual. He also tells you that three years ago he had a kidney transplant. You order a urinalysis, which is positive for large amounts of blood and protein. What is potentially causing Mr. Yien's problems, given his medical history? Explain.
Answers
Answer:
Kidneys typically don't permit giant proteins to go through them. however thanks to harm to the units of excretory organ (nephrons), these proteins go through kidneys and ar suffered excretory product. This sickness is named symptom.
In excretory organ transplant patients, most of the macromolecule comes from native excretory organ or from homograft.
In the higher than case, there's a late look of blood and macromolecule within the excretory product of patient, that is especially caused by graft injury. There additionally be|is also} also fungous or infective agent infections to metabolism track thanks to excessive use of immunosuppresant medicine.
Biology 3.03 Lab: Dichotomous Key 1. I desperately need help.
Create a dichotomous key that identifies the 10 leaves on the Common Leaves sheet. Look closely at those leaf samples and devise a dichotomous key that helps you identify them. Be sure that your dichotomous key contains only pairs of statements about a single characteristic. For example, a pair of statements might be:
A. leaf margin smooth
B. leaf margin toothed
However, you should avoid pairs of statements that do not address the same characteristic. The following pair, for example, would not be very informative in your key:
A. leaf margin smooth
B. leaf type needle-like
As you develop your key, test it out with the 10 leaves provided on the Common Leaves sheet. When you've developed a key that identifies all 10 leaves, type your statements, “go tos,” and identifications, following the format in the example below. The example is based on this lesson’s dichotomous key for birds.
Once you have completed your dichotomous key, answer the two remaining questions. When you are finished, submit this assignment to your teacher by the due date for full credit.
1. Complete a dichotomous key for the 10 leaves on the Common Leaves sheet. The chart provided here allows for 11 pairs of statements. Depending on how you build your dichotomous key, you may or may not need all of them, or you may need to add some.
2. Can more than one dichotomous key be developed to identify the same group of organisms? Explain. To answer this question, refer to this lesson’s dichotomous key for birds.
Answer:
Type your answer here.
3. If two different people use the same dichotomous key to identify the same organism, should they have different results? Explain.
Answer:
Type your answer here
I apologize if this makes no sense at all.
Answers
The following could serve as a dichotomous key to identifying the ten leaves: Oval or elliptic in shape. linear or lanceolate in form. cordate or triangular in form. Orbicular or reniform leaves. Oval or spatulate leaves. smooth leaf margin
What does a dichotomous leaf key entail?An instrument that assists in the identification of different leaf species is a dichotomous key for leaves. By offering two different explanations for each observation, it aids in the classification of species.
What kind of plant has a dichotomous key, specifically?For instance, a dichotomous key in tree identification would inquire as to whether the tree has leaves or needles. If the tree has leaves, the key then sends the user down one set of questions; if the tree has needles, an other list of questions is presented.
To know more about dichotomous key visit:-
https://brainly.com/question/2235448
#SPJ1
This male rabbit is mated with a female rabbit that does not have the bioluminescence gene. The offspring resulting from this mating
Answers
This male rabbit is mated with a female rabbit that does not have the bioluminescence gene. The offspring resulting from this mating won't have such trait.
What is Natural selection?This is referred to as the differential survival and reproduction of individuals due to differences in phenotype.
The probability of rabbit offspring inheriting bioluminescence would decrease . This is because rabbits with this trait would not survive to reproduce more glowing rabbits and natural selection helps with this because glowing rabbits are more likely to be seen by predators than non-glowing rabbits .
Read more about Natural selection here https://brainly.com/question/23929271
#SPJ1
organisms that exist as a specialized group of cells
Answers
Neurons
They are the specialized cells that care for the majority of most body functions
1. Some human societies have lifestyles that are sustainable, while others do not.
a. Describe how living near water can lead to a more sustainable lifestyle. (0.5
point)
Answers
Sustainable living is the attempt to reduce the use of natural resources like fossil fuels, forests, and others by the human society so that these resources remain available for future generation.
It is associated with maintaining the balance in the ecological, economical and societal needs to lead a healthy lifestyle. As it mainly emphasizes over the protection of the environment then it is also called as green living.
An individual who pursues a lifestyle where he/she is concerned of using the resources in a limited quantity so the basic requirement of his/her is fulfilled along with preserving the remaining resources for the coming generation so that their basic requirements could be met, is following a sustainable living.
Learn more about resources on:
https://brainly.com/question/28605667
#SPJ1
1. Over time, the climate of an island became drier, which resulted in changes to the populations of various island finch species. Finch populations with a certain beak shape thrived, while those not having that beak shape decreased, Which of the following describes a necessary condition for thesechanges in the finch populations to occur?
Answers
Answer:
A necessary condition for the changes in the finch populations to occur in response to the drier climate would be:
- Variation in beak shape within the initial population: There must have been existing genetic variation in the population of finches regarding beak shape. Some finches would have had the beak shape that provided an advantage in obtaining food resources in the drier climate, while others would have had different beak shapes.
Without this initial variation in beak shape, there would be no opportunity for natural selection to act and favor individuals with the advantageous beak shape. Therefore, the presence of genetic variation within the population is necessary for the changes in the finch populations to occur.
Based on the theory of natural selection, the necessary condition for the changes in the finch populations to occur is limited food resources. Option B
What does natural selection say?Natural selection is the process by which populations of living organisms adapt and change over time.
Natural selection occurs when there is variation within a population of a species, and some individuals are better able to survive and reproduce than others.
These individuals are more likely to pass on their genes to the next generation, and the population will gradually change over time.
The above answer is based on the full question below;
Over time, the climate of an island became drier, which resulted in changes to the populations of various island finch species. Finch populations with a certain beak shape thrived, while those not having that beak shape decreased, Which of the following describes a necessary condition for these changes in the finch populations to occur?
A. fewer mutations B. limited food resources C. limited beak variations D. overproduction of offspring
Find more exercises on natural selection;
https://brainly.com/question/31054297
#SPJ1
After Darwin in Biology
Answers
Answer:
Since the publication of Charles Darwin's On the Origin of Species in 1859, biological research has been dominated by evolutionary theory. This has led to a better understanding of how species change over time and how species interact with one another and with their environment. It has also led to an increased focus on conservation biology, which seeks to protect threatened species and manage healthy ecosystems. Research has also looked at the genetic basis of evolution and how organisms adapt to their environment. Areas such as molecular biology, genetics, and epigenetics have all been impacted by Darwin's work and have led to a better understanding of how organisms work and how they evolve.
An underground gasoline tank is leaking. How will the gasoline act in an aquifer? What steps will you take in your investigation? What specific data is necessary to evaluate the plume flow, impacts to water, buildings, soil etc? What is your proposed cleanup strategy?
Answers
Gasoline leaks into aquifers contaminate groundwater. Investigation involves assessing contamination extent, monitoring water quality, inspecting soil/buildings, and collecting plume flow/impact data.
Relevant data: groundwater flow rates, contaminant concentrations, soil permeability, proximity to structures/water sources.
The cleanup strategy depends on severity/extent, potentially pumping/treating groundwater, soil remediation, and implementing barriers to halt plume spread.
When gasoline from an underground tank leaks into an aquifer, it can have significant impacts on the surrounding environment.
Gasoline, being a mixture of hydrocarbons, is less dense than water and will float on the water table.
The gasoline will spread horizontally and vertically within the aquifer, creating a plume that can contaminate the groundwater.
The movement of the plume will depend on factors such as the permeability of the aquifer, groundwater flow direction, and the presence of any barriers or confining layers.
In the investigation of the leak, several steps can be taken. First, site characterization is necessary to determine the extent of the contamination and identify potential receptors at risk.
This may involve groundwater sampling, soil sampling, and monitoring well installation.
Specific data required for evaluating the plume flow and impacts may include groundwater flow rates, contaminant concentrations, soil properties, and the proximity of water sources or sensitive receptors.
The proposed cleanup strategy will depend on various factors, such as the extent of the contamination, proximity to receptors, and regulatory requirements.
Common remediation methods for gasoline contamination include pump-and-treat systems, soil vapor extraction, bioaugmentation, and natural attenuation.
The selected strategy should aim to minimize the migration of the plume, remove or treat the contaminated groundwater and soil, and mitigate potential risks to human health and the environment.
For more such answers on gasoline
https://brainly.com/question/8897591
#SPJ11
a special structure used for cells movement about plants ang animals
Answers
An external or internal cue or combo of cues that produces a response is called? A) motive B) observation C) reaction D) stimulus
Answers
\(\huge\underline{\underline{\boxed{\bm {Answer:}}}}\)
○ \(\large\tt{A.)}\) motive
○ \(\large\tt{B.)}\) observation
○ \(\large\tt{C.)}\) reaction
◉ \(\large\tt{D.)}\) stimulus
\(\huge\underline{\underline{\boxed{\bm{Explanation:}}}}\)
The cue or combo of cues that produces a response is called a \(\large \sf{stimulus}\), which is a thing or event that causes a specific reaction in an organ or tissue.
A live organism's behavior that arises in reaction to an internal or external stimuli is known as a response. Anything that makes you react, like the smell of food making your mouth moisten, is a stimulus. Responses include bodily activities like muscle contractions, gland secretions, or mental processes. Thus option D is correct.
What combo of cues that produces a response is called?A stimulus is a thing or an event that prompts a particular response in an organ or tissue. It might be a single cue or a combination of cues.
The sensory input from the outside world consists of touch, pain, vision, smell, taste, sound, and balance (equilibrium). These sensory impulses become active in response to external changes. Touch and pain: The stimulus that can have a significant impact on the body is pain.
Therefore, An external or internal cue or combo of cues that produces a response is called a stimulus.
Learn more about cues here:
https://brainly.com/question/14405541
#SPJ2
Mention two important roles for hydrochloric acid in the stomach.
Answers
Answer: 1.)The gastric juice
2.) The acidic gastric
Explaining: The hydrochloric acid in the gastric juice breaks down the food and the digestive enzymes split up the proteins. The acidic gastric juice also kills bacteria. The mucus covers the stomach wall with a protective coating.
Hope this helps. :)
Which statement best describes what causes an organism to change over time? Why does the sequoia tree have leaves and bark, why doesn't it look like a really big seed?
Cells gain new DNA as they grow, so as the DNA changes, it gets the new instructions it needs to build the complex tree
All the cells of the sequoia tree have the same DNA, but different genes on the DNA are expressed (or turned on), creating specialized cells
All the cells of the sequoia tree are unique and have different DNA, you have billions of cells, each with different instructions to turn into a complex organism
We have between 20-200 different types of cells each with its own DNA. Those different cells divide and spread their different DNA to various types of the body
Both A and D
Answers
The statement that best describes what causes an organism to change over time is Cells gain new DNA as they grow, so as the DNA changes, it gets the new instructions it needs to build the complex tree.
What is DNA?Deoxyribonucleic acid (DNA) is described as a polymer composed of two polynucleotide chains that coil around each other to form a double helix.
In a cell, we have between 20-200 different types of cells each with its own DNA. Those different cells divide and spread their different DNA to various types of the body.
Learn more about DNA at: https://brainly.com/question/16099437
#SPJ1
I am a rock entering a planet's atmosphere. *
A. Asteroid
B. Star
C. Meteor
D. Comet