Answer:
if the image has no nucleus shown then it's a prokaryotic cell.....
You require 600 µL of a 1:10 dilution of bromophenol blue (BPB). What volumes of BPB and water will you combine?
a. 20 μL BPB, 180 μL water
b. 180 μL BPB, 20 μL water
c. 2 μL BPB, 100 μL water
d. 2 μL BPB, 198 μL water
e. None of the above
To prepare a 1:10 dilution of bromophenol blue (BPB) requiring a volume of 600 µL, you would combine 20 µL of BPB with 180 µL of water.
A 1:10 dilution means that you need to mix one part of the solute (BPB) with nine parts of the solvent (water) to obtain a total of ten parts. To calculate the volumes needed, you can use the following equation:
Volume of BPB + Volume of water = Total volume of diluted solution
Let's assume the volume of BPB needed is x µL. According to the 1:10 dilution ratio, the volume of water needed would be 9x µL. The sum of these two volumes should be equal to the total volume of 600 µL:
x + 9x = 600
10x = 600
x = 60
So, you would need 60 µL of BPB and 540 µL of water to prepare a 1:10 dilution with a total volume of 600 µL. This corresponds to the option (a) 20 µL BPB and 180 µL water, as 60 µL is one-third of 180 µL and satisfies the dilution ratio.
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PLEASE HELP TODAYS MY LAT DAY I NEES THIS GRADE
What are the weaknesses or inaccuracies in the model the student created?
Answer:
The model appears to show the carbon dioxide molecules entering the blood cell and the oxygen molecules existing the cell.
Answer:
Explanation:
The model doesn’t clearly show that gas exchange happens in the alveoli through the capillaries. The model can also be easily misinterpreted. Because the model doesn’t show where this gas exchange is taking place, it looks like the blood picks up oxygen, delivers it to the body, and then comes back and expels the carbon dioxide it collects. Clarifying that this gas exchange is taking place in the capillaries would eliminate this confusion.
Individuals with high blood pressure are at a higher risk for:OOOOstrokeaneurismheart attackAll of these choices are correct.
High blood pressure can place increased pressure on the walls of the blood vessels inside the brain, increasing your chances of developing an aneurysm. Also, it forces the heart to work harder to pump blood to the rest of the body. This causes the lower left heart chamber (left ventricle) to thicken. A thickened left ventricle increases the risk of heart attack, heart failure and sudden cardiac death. Moreover, blood vessels damaged by high blood pressure can narrow, rupture or leak. High blood pressure can also cause blood clots to form in the arteries leading to the brain, blocking blood flow and potentially causing a stroke.
So the correct answer is: All of thees choices are correct.
What is cell theory.
Answer:
Cell theory states that living things are composed of one or more cells, that the cell is the basic unit of life, and that cells arise from existing cells.
Explanation:
I hope that makes sense.
Answer:
cell theory is a scientific theory first formulated in the mid-nineteenth century, that living organisms are made up of cells, that they are the basic structural/organizational unit of all organisms, and that all cells come from pre-existing cells. Cells are the basic unit of structure in all organisms and also the basic unit of reproduction.
The three tenets to the cell theory are as described below:
All living organisms are composed of one or more cells.
The cell is the basic unit of structure and organization in organisms.
Cells arise from pre-existing cells.
Explanation:
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One could say that the main function of the cardiovascular system is to: support the heart deliver oxygen to cells 1 pts O detoxify the blood OB and C
The main function of the cardiovascular system is to: deliver oxygen to cells. Option(b)
The cardiovascular system consists of the heart, blood vessels, and blood. Its primary role is to transport oxygen, nutrients, hormones, and other essential substances to the cells of the body.
Oxygenated blood is pumped by the heart through arteries to reach the tissues, where oxygen is released and utilized by the cells for various metabolic processes. Simultaneously, the cardiovascular system also collects waste products, such as carbon dioxide, from the cells and transports them to the lungs for elimination.
Overall, the cardiovascular system plays a crucial role in maintaining the delivery of oxygen and nutrients to cells, ensuring their proper functioning and overall survival.
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Epiphytes are smaller plants that grow on other plants, such as the ball moss that lives on a tree. The moss benefits
from greater exposure to light and to nutrients from the air and rain. The moss does not harm the tree as it uses the
tree only for support. This relationship is an example of -
A
Mutualism
B
Parasitism
nA
Commensalism
D
Competition
Answer:
Commensalism
It is a +/0 population interaction.
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Evan and his friends are so surprised to find deer in their subdivision! His mom is getting mad because every morning they are in the garden eating everything they see. What change in their environment could have taken place?
Answer: a
Explanation:
Read and answer the questions below.
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Questions
1. What signs and symptoms did Greg exhibit when he was in the house?
2. Was Mrs. Myron correct when she said that Greg was dehydrated? Which signs and symptoms are consistent
with this notion?
3. Explain how each sign or symptom can be created by dehydration.
4. Mrs. Myron thought that it was not necessary to seek medical treatment. Do you think she was correct?
1. What signs and symptoms did Greg exhibit when he was in the house? Some signs and symptoms Greg experienced were thirst, dizziness, and turgor. 2. Was Mrs. Myron correct when she said that Greg was dehydrated? Which signs and symptoms are consistent with this notion? Mrs. Myron thought that it was not necessary to seek medical treatment. Do you think she was correct? I believe Mrs. Myron was correct when she said Greg was dehydrated. All his signs and symptoms are symptoms of dehydration. Don't use plagiarized sources. Get your custom essay on “ Cardiovascular and Immune/Lymphatic Systems ” GET CUSTOM PAPER NEW! smart matching with writer I would probably have taken him to the hospital because he passed out and continues to do so, another factor would have been his temperature. I’ve Fallen Over and I Can’t Get Up: Part II—”The High School Football Game” Questions 1. What were Greg’s signs and symptoms before the game and during the warm up? Can you think of any reasons why Greg exhibited these signs and symptoms? Before the game and during warm up Greg experienced dizziness, loss of appetite, flushed, and sweaty. Greg may be experiencing dehydration. 2. Greg is taken to the hospital after being injured during the game. What problems do you think the physicians will find with Greg when they examine him, or do you think he is only suffering from dehydration? Greg has probably experienced a concussion from the hit he took. I’ve Fallen Over and I Can’t Get Up: Part III—”The Next Day In The Hospital” Questions 1. What are Greg’s new signs and symptoms? Do you have a diagnosis for Greg’s problem? Greg is now feeling nauseous, weak, and has a headache. I think he has a concussion. 2. The chart below shows that when baroreceptors detect a drop in arterial blood pressure the sympathetic nervous system stimulates the heart and the smooth muscles in the walls of the arteries and the veins. Write increase or decrease to indicate the effect of the sympathetic nervous system on the variable in each numbered box. (3 points) I’ve Fallen Over and I Can’t Get Up: Part IV—”The Neurologist” Questions 1. What evidence suggests that Greg suffered from a mild concussion? Greg feels nauseous, weak, and has a headache which indicates a concussion. I’ve Fallen Over and I Can’t Get Up: Part V—”The Follow-Up Visit” Questions 1. What is the relative position between the heart and the head (or baroreceptors in the carotid sinus) when you are lying down? What is the relative position between the heart and the head (or baroreceptors in the carotid sinus) when you are standing? What happens to the pressure of the blood as it travels against gravity in a standing person? When you are lying on your back, blood is able to flow more easily. If you move from a seated or supine position to a standing position, there may be a momentary drop in your blood pressure, baroreceptors sense this drop and signal the heart to beat faster. 2. The baroreceptor reflex insures that the pressure of the blood entering the brain remains within defined limits, irrespective of body position. Under these circumstances, predict the blood pressure in the aorta of a standing person and a person who is lying flat on their back. I’ve Fallen Over and I Can’t Get Up: Part VI—”The Diagnosis” Questions 1. How would a pacemaker help Greg’s condition? It would keep his heart rate at more of a steady pace. 2. If a pacemaker is implanted to control Greg’s heart rate, what life changes will be forced upon him? Do you think Greg will ever play competitive sports again? I do not think it is recommended he play competitive sports. He will have to watch his physical activity and not want to exert himself too much. ___________________________________________________________________________________________
Explanation:
Question 1 In the past, Michael received $5 for completing his weekly chores. Michael has once again completed his chores, and he hopes to receive $5. According to social learning theory, this is referred to as O self-efficacy O reinforcement value O imitation O expectancy
According to social learning theory, this is referred to as expectancy. The correct option is D.
What is social learning theory?According to the social learning theory, people learn social conduct by seeing and copying the actions of others.
As an alternative to the earlier work of colleague psychologist B.F. Skinner, was noted for his influence on behaviorism, and Albert Bandura created the social learning theory open in new.
The feeling or hope that something fascinating, exciting, or positive is about to happen is known as expectation.
Therefore, the correct option is D, expectancy.
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In a newly fertilized egg, the vitelline layer ______. A. lifts away from the egg and hardens to form a fertilization envelope B. secretes hormones that enhance steroidogenesis by the ovary C. reduces the loss of water from the egg and prevents desiccation D. provides most of the nutrients used by the zygote
In a newly fertilized egg, the vitelline layer lifts away from the egg and hardens to form a fertilization envelope.
Therefore, the correct answer is Option A.
What is vitelline layer?Vitelline layer or vitelline membrane (VM) is a structure that surrounds the outer surface of the plasma membrane of an egg or ovum. In some organisms (e.g.: birds), the vitelline layer surrounds the extracellular yolk and the ovum.It is multilayered and functions to protect and give shape to the egg yolk and separate it from the egg white. VM consists of protein fibers and protein receptors necessary for sperm binding.As its function is to provide support and protection to the yolk, after fertilization, the vitelline layer gets hardened and separated from the yolk to form fertilization envelope.Learn more about fertilization in sea urchins here:
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The series of membrane-bound channels between the nuclear and
cell membranes, serving as a cellular transport system is the
o plasma membrane
O nucleus
o endoplasmic reticulum
Answer:
C. Endoplasmic Reticulum.
Explanation:
The Endoplasmic Reticulum also includes ribosomes attached to the membrane and can produce protein.
I hope this helps you! :)
The structure of this type of beak helps a bird -
Such types of beaks are used to help in fishing, which is present in option B, as beak size is a critical adaptation for birds that plays an essential role in their survival and daily activities.
A bird's beak is a versatile and complex structure that has evolved to meet the specific needs of different bird species, and the shape and size of a bird's beak are closely related to its feeding behavior and lifestyle. The beak is primarily used for feeding, and a bird's beak size and shape determine the type of food it can eat. For example, some birds have sharp, pointed beaks that are adapted for catching and tearing prey, while others have flat, wide beaks that are adapted for grinding seeds or cracking nuts.
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the amount of sebum produced by the sebaceous glands determines the size of the _____.
The amount of sebum produced by the sebaceous glands determines the size of the pores. Sebum is an oily substance that is secreted by the sebaceous glands and helps to keep the skin moisturized. When there is an excess of sebum production, it can cause the pores to become clogged and enlarged, leading to acne and other skin problems.
On the other hand, when there is a lack of sebum production, the skin can become dry and flaky. Therefore, it is important to maintain a healthy balance of sebum production to keep the skin healthy and radiant.
When these glands produce an adequate amount of sebum, the pores remain clean and maintain their normal size. However, when the glands produce too much sebum, the pores can become clogged and enlarged. On the other hand, if there is insufficient sebum production, the skin may become dry and the pores may appear smaller. To maintain healthy skin, it is essential to keep the sebum production in balance.
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Who was the first to group Plants and Animals
Hi!Aristotle was the first to group Plants and Animals.
Phylogeny is the type of classification that names and identifies different organisms primarily by their: A. Physical similarities B. Similarity to humans C. Physical differences D. Evolutionary relationships
Answer:
D. Evolutionary relationships
Explanation:
phylogeny describes the relationships of organisms which evolved on most closely related species
Phylogeny is the type of classification that names and identifies different organisms primarily by their evolutionary relationship. The correct option is D.
What is phylogeny?Phylogenetics is the analysis of the evolutionary history and interactions between or within organism groups in biology.
Phylogenetic inference methods that concentrate on observed heritable traits, including such DNA sequences, protein amino acid sequences, or morphology, are used to determine these relationships.
Thus, the correct option is D.
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Two Difference between radicle and plumule
Answer:
radical forms root , plumule forms shoot
Explanation:
Radicle is the first part of the seedlings. Plumule is the embryonic shoot of the plant
List three ways that people can change their phenotype. Can the same be done with an individual's genotype? Explain your answer.
what type of white blood cell is activate memory cells ?
Answer:
Memory B lymphocytes.
Explanation:
Bm lymphocytes are cells involved in the secondary innate humoral immune response. They're also, like other B cells, produce antibodies after the first exposure with an antigen and then produce large amounts of antibodies shortly after another exposure to the same antigen.
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name all the cell organelles which are found in plant cell but not in animal cell
Answer:
Plant cells contain all of the same organelles as animal cells, including mitochondria, a nucleus, ribosomes, smooth and rough ER, Golgi apparatus, lysosomes, peroxisomes, cytoplasm, and a cell membrane. However, they also contain some subcellular structures that are absent in animal cells, such as chloroplasts , a vacuole, and a cell wall.
Explanation:
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why do cell biologists study yeast?
Biologists study cells due to the cell relation to that of animal cell
What are yeasts?Yeast are eukaryotic organisms which are part of the fungus kingdom.
They are important to biologist because they tend too carry out all the functions of the eukaryotic cells and they are known to be closely related to animals
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Which birds of the northern United States can probably best withstand extreme temperature changes?
A. Those that migrate to coastal regions in the fall
B. Those that migrate in the fall
C. Those that migrate in the spring
D. Those that remain in that region throughout the year
Answer:
D
Explanation:
i think that is the answer.
Homologous is used to
describe alleles that match
true or false
Answer:
true
Explanation:
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Answer #7 and will mark brainliest
Answer:
the fact that the bubbles of carbon are bursting due to the high amount of drilling recently
Explanation:
A lack of interest in imaginative play is:
unusual for one-year-olds.
O
normal for three- to four-year-olds.
normal for five-year-olds.
a sign of delays or concern in three- to four-year-olds.
A lack of interest in imaginative play is normal for five-year-olds.
Children engage in imaginative play, sometimes referred to as pretend play or symbolic play, in which they create and act out scenarios in their heads. Playing dress-up, role-playing, or creating scenarios with toys or props are all examples of this type of play, which involves inventing imaginary settings, people, and objects. Children's development benefits from imaginative play because it fosters creativity, social skills, and problem-solving abilities.
Therefore, the correct option is C.
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in the tertiary structure of a protein, an electrostatic interaction could form between the r-groups of which two amino acids? a. arg and his b. glu and arg c. gln and lys d. leu and asp e. asp and thr
In the tertiary structure of a protein, an electrostatic interaction could form between the r-groups of (b) glu and arg amino acids.
Peptides and proteins are made up of chemicals or building blocks called amino acids. Each amino acid is made up of a tetrahedral carbon, a carboxyl group, and an amino group. The -carbon is the name given to this carbon (alpha-carbon).
The R groups on the side chains of amino acids are what separate them from one another. Each amino acid's R group will have a unique structure, electrical charge, and polarity.
An absolutely necessary amino acid called arginine has a positively charged guanidino group. The active centers of proteins that bind phosphorylated substrates frequently contain arginine because it is ideally suited to bind the phosphate anion.
Protein 1 carries a positive charge on the side chain of the amino acid arginine. Protein 2 has a negatively charged side chain of glutamic acid amino acids. Ionic bonding, or the attractive force between the positive and negative charge, is the most likely interaction between these two amino acids.
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Describe the different morphological types of viruses and give examples of each type:
a. Helical
b. Icosahedral
c. Complex
2. Compare and contrast the multiplication of bacteriophages versus the multiplication of animal viruses:
3. Describe how arthropods can act as mechanical vectors and biological vectors:
4. Describe five (5) characteristics of fungi and how they differ from othermicroorganisms: 5. Describe common characteristic of protozoans (protists). Name three (3) protozoans that are human parasites:
6. What are helminths? Name and describe three (3) that can cause problems in humans
Bacteriophages multiply within bacterial cells through the lytic or lysogenic cycle, while animal viruses typically use the steps of attachment, penetration, uncoating, replication, assembly, and release.
Helical viruses have a coiled or spiral-shaped capsid, such as the tobacco mosaic virus. Icosahedral viruses have a symmetrical icosahedral-shaped capsid, like the adenovirus. Complex viruses have a combination of both helical and icosahedral components, such as bacteriophages.
Bacteriophages multiply within bacterial cells through the lytic or lysogenic cycle, while animal viruses typically use the steps of attachment, penetration, uncoating, replication, assembly, and release.
Arthropods can act as mechanical vectors by carrying pathogens on their bodies or in their mouthparts, transmitting them to humans through physical contact. They can also act as biological vectors by harboring and transmitting pathogens within their bodies, such as mosquitoes transmitting malaria parasites.
Fungi are eukaryotic organisms characterized by their filamentous structure (hyphae) and reproduction through spores. They differ from other microorganisms in their mode of nutrition (absorptive), cell wall composition (chitin), mode of reproduction (asexual and sexual), growth at low pH, and preference for organic substrates.
Protozoans are single-celled eukaryotic organisms classified under the kingdom Protista. They exhibit characteristics such as being unicellular, heterotrophic, motile (using cilia, flagella, or pseudopods), and capable of reproduction through binary fission or sexual processes. Examples of human parasites include Plasmodium (causing malaria), Giardia lamblia (causing giardiasis), and Trichomonas vaginalis (causing trichomoniasis).
Helminths are parasitic worms that infect humans. Three examples of helminths that can cause problems in humans are Ascaris lumbricoides (roundworm), Taenia solium (pork tapeworm), and Schistosoma mansoni (blood fluke). These helminths can cause diseases such as ascariasis, taeniasis/cysticercosis, and schistosomiasis, respectively. They have complex life cycles involving different developmental stages and can infect various organs or systems in the human body.
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Which of the following statements best describes the OVERALL process of photosynthesis?
A:Breaks down glucose to form ATP.
B:Uses the energy in sunlight to make ATP.
C:Uses the glucose in sunlight to make food.
D:Use the energy in sunlight to make food.
Use the energy in sunlight to make food is the step which best describe photosynthesis.
What are the steps of photosynthesis ?In the first step, carbon dioxide enters through the stomata of leaf, water is absorbed by the hairs of root and is carried to the leaves through the xylem vessels.
Chlorophyll of leaves absorbs the sun light energy and split water molecules into hydrogen and oxygen.
Now hydrogen from water splitting and carbon dioxide are taken for the synthesis of glucose.
Oxygen is released to the atmosphere s a waste product.
The photosynthesis occur in two stages such as Light-dependent reaction or light reaction and Light independent reaction or dark reaction.
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This diagram shows the bone of an arm. Name bone C.
Answer: we dont have the diagram buddy -_-
Explanation:
why do we need satellites
Answer:
Satellites send signals directly to Earth and for certain uses being agriculture, forestry, global warming predictions, oil and gas monitoring and disaster relief.
Recent research on Arabidopsis has shown that florigen is probably ________.
a) A hormone that promotes flowering
b) A disease-resistant gene
c) A type of photosynthetic pigment
d) A neurotransmitter in the brain
Recent research on Arabidopsis has shown that florigen is probably
a) A hormone that promotes flowering