xi. Organs such as the ileum which absorb substances are often modified in ways which increase the rate of absorption. Which of the following would you not expect to increase the rate of absorption?
A Coiled tube.
B A slow blood flow.
C Many finger like projections.
D Many blood capillaries.
Answers
Related Questions
Question 1 A heterozygous yellow-seeded plant is crossed with a homozygous yellow seeded plant. i. ii. Question 2 Complete the punnet square and write the genotypic and phenotypic ration for the possible offsprings. (3 marks) Genotypic ration Phenotypic ration What is the probability of having a pure breeding green seeded offsprings (2 marks) What is the probability of having a yellow-seeded plant in F2 generation, when a true breeder from F1 is crossed with a non-true breeding yellow seeded plant? (2 marks)
Answers
Answer:
Explanation:
To solve this problem, let's represent the heterozygous yellow-seeded plant as "Yy" and the homozygous yellow-seeded plant as "YY."
i. When crossing a heterozygous yellow-seeded plant (Yy) with a homozygous yellow-seeded plant (YY), we can set up a Punnett square to determine the possible offspring genotypes:
Y Y
y Yy Yy
y YY YY
ii. The genotypic ratio is 2:2 or 1:1 for the possible offspring genotypes: Yy and YY.
The phenotypic ratio is also 2:2 or 1:1 for the possible offspring phenotypes: yellow-seeded (YY and Yy).
Question 2:
To determine the probability of specific outcomes, we need additional information about the parental genotypes and their inheritance patterns. Please provide the genotypes of the true breeder from F1 and the non-true breeding yellow-seeded plant for a more accurate calculation.
All of the following are factors affecting the rate of photosynthesis except.
1. temperature
2. ultraviolet radiation
3. light intensity 4. carbon dioxide presence.
Answers
Answer:
Ultraviolet radiation does not influence photosynthesis
Answer:
Ultraviolet Radiation
Explanation:
The correct answer is ultraviolet radiation. Temperature, carbon dioxide presence, and light intensity are all critical factors in determining the rate of photosynthesis.
Name and describe what type of reproductive isolation is represented in this image. (2 points)
Answers
Answer:
The type of reproductive isolation was between animals was represented on this image.
How many water molecules are formed after the formation of three triglycerides?
Answers
A triglyceride is made up of three fatty acids and one molecule of glycerol.
What is the main component of triglyceride?The triglyceride is made up to three fatty acids and one molecule of glycerol. During a dehydration reaction, there is a formation of a triglyceride by joining three fatty acids with glycerol backbone.
Phospholipids, also known as glycerophospholipids, are the derivatives of fatty acids which is a major structural component of the cell membranes. Phospholipid is the class of lipids that is composed of a glycerol molecule.
Therefore, A triglyceride is made up of three fatty acids and one molecule of glycerol.
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At a sea level, the weight of the atmosphere on a human body is about:
A. 9,800 N
B. 980 N
C. 98 N
D. 9.8 N
Answers
Answer:D I believe
Explanation:
A scientist wanted to see if the number of eggs in a nest varied according to latitude. She decided to study a specific species of bird found in both tropical and temperate zone areas. One hundred nests were examined,in each of the 3 temperate zone areas (300 nests)and 3 tropical zones areas( 300 nests) for a total of 600 nests. In each case,the number of eggs were counted. In this investigation, what is the:____.
A. Question bejng asked?
B. Independent variable?
C. Dependent variable?
D. Constant?
E. Hypothesis?
F. Sample size?
G. Repeated measure?
Answers
Answer:
A. Does the number of eggs in a nest of this bird species vary with the latitude of the area the bird lives in?
B. The latitude of the area
C. The number of eggs
D. The species of the bird
E. The number of the bird eggs in a nest in a temperate zone area will be greater than that of a tropical area.
F. 600 nests
G. The number of eggs
Explanation:
A. In the investigation, the scientist wanted to see if the number of eggs in a nest varied according to latitude, therefore, the question she will be seeking an answer to is: does the number of eggs in a nest of this bird species vary with the latitude of the area the bird lives in?
B. The independent variable is the variable that is not affected by the other variables being measured in an investigation. In the investigation by the scientist, the latitude of an area is the independent variable in that it is independent of changes in the other variable- the number o eggs- in the investigation.
c. The dependent variable is the variable that is affected by changes to the other variable in an investigation. The number of eggs is expected to vary according to latitude, is therefore, it is the dependent variable.
D. The constant is the factor that does not change during the experiment. The bird species is the constant as it does not change in the investigation.
E. A hypothesis is a specific statement predicting the result of an investigation or study.
In this study, the hypothesis could be: The number of the bird eggs in a nest in a temperate zone area will be greater than that of a tropical area.
F. The sample size gives the the total number of subjects, individuals or observations in a study. In this case, the subjects are bird nests, and the sample size is 600 nests.
G. The number of eggs in all the nests were counted; therefore, it is the repeated measure.
What is the purpose of the cellular process
Answers
The correct answer is H. transcribing information in the DNA sequence for the use by the cell
Explanation
The process shown in the image is DNA transcription, this is the first procedure in gene expression. In this process, the information contained in the DNA sequence is transferred to the protein sequence using various RNAs as intermediaries. During this, DNA sequences are copied to RNA by an enzyme called RNA polymerase that synthesizes messenger RNA (maintains DNA sequence information for the use by the cell), so DNA transcription could also be called messenger RNA synthesis. According to the above, the correct answer is H. Transcribing information in the DNA sequence for the use by the cell.
Part II Use the following words and phrases to fill in the blanks with the best possible match. You will use several of the terms more than once. ecosystem primary succession diversity secondary succession lichens pioneer organisms succession climax community 1. A forest of pine trees is burned over a 10 mile area when lightning strikes a tree. In the spring, a few seedlings are beginning to sprout. ___________________________________ 2. A glacier has scraped all soil from a rocky area. As it slowly retreats, some of the rock is broken down by weathering. Some moss begins to grow. ___________________________________ 3. A small symbiotic organism secretes acid into the rock to anchor itself in place. ___________________________________
Answers
Answer:
1. A forest of pine trees is burned over a 10 mile area when lightning strikes a tree. In the spring, a few seedlings are beginning to sprout → secondary succession.
2. A glacier has scraped all soil from a rocky area. As it slowly retreats, some of the rock is broken down by weathering. Some moss begins to grow → primary succession.
3. A small symbiotic organism secretes acid into the rock to anchor itself in place → lichens - pioneer organisms.
Explanation:
The succession is the colonization of an open area and includes all the changes the area suffers since then. It is a sequence of events that involves the establishment of different species through time. A sequence of changes that occur in a community temporally and spatially. Local colonizations and extinctions occur while ecosystems evolve at a more complex level.
Ecological succession occurs in stages. The first stages are represented by communities of simple trophic levels and few species. With time, the communities go through different stages. They transform into more complex ecosystems that are much richer in diversity, showing more interaction among the different species that compose it. The final stage is known as the climax and represents a mature and stable system.
While the community is going through these changes, many species get extinct while many others get to emerge and survive. It occurs overlapping of different taxonomic groups that interact with each other competing or beneficiating other groups.
There are two types of succession, primary and secondary, depending on the magnitude of the alteration.
Primary succession refers to an open space with no living organisms, such as a bare rock exposed due to a retreating glacier, a volcanic activity, or an intense fire. If previous species were inhabiting this area, after the event, nothing is left.In those cases where there is an alteration or disturbance at a site that opens the area, it allows new species to grow. With time, new species arrive and manage to establish again. The order of the establishment depends on the strategies of each of the species to survive.
First, pioneer species arrive. These are the first inhabitants, mostly lichens or plants with the capability of surviving in such an environment. Only a few pioneers can establish in the open space. Pioneers modify the habitat, making it more suitable for the establishment of later species, converting rock into fertile soil. As conditions get better, new species arrive like grasses. Grasses and pioneers keep modifying the soil, making it better with time. New species arrive. Habitat modification keeps on going while new species establish. They produce shadows, alter the temperature, and humidity, fertilizing the soil, competing for resources. Competition becomes more frequent between species. The first species are eventually eliminated by competition, but new species keep appearing and competing for resources. This sequence continues until the commuting reaches a climax, becoming stable and lasting for hundreds of years until another disturbance occurs.
Secondary succession refers to an open space left after a perturbation that might have removed all or some of the vegetable forms of life that used to inhabits that area. But the soil remains good and fertile. It has spores and seeds that will emerge when the conditions are appropriate. The disturbance occurred but vegetable species have strategies to survive the event and grow once it´s over. Pine trees are adapted to fire, and some species need fire to germinate.Red blood cells in A-positive individuals:
a)Have the B antigen, and generate antibodies against the A antigen
b)Have the A antigen, and generate antibodies against the B antigen
c)Have the A antigen, and generate antibodies against the A antigen
d)Have the A antigen, and generate antibodies against the A and B antigen
Answers
Answer:
Red blood cells in blood type A-positive individuals have the A antigen, and generate antibodies against the B antigen (option B).
Explanation:
The basis of compatibility by blood group, according to the ABO system, is due to the presence of surface antigens A and B in the red blood cells. When a specific antigen is present, the body recognizes it as its own, while the other antigen will be recognized as foreign, and will induce antibody synthesis.
Blood types are determined by the presence, or absence, of these surface antigens A and B, generating antibodies against the antigens it does not possess, which can be summarized:
Blood type A has surface antigen A, but antibodies against B. Blood type B has surface antigen B, and antibodies against A Blood type AB has both A and B antigens, so it does not generate antibodies .Blood type O has no antigens, but can produce antibodies to both antigens.Individuals' blood type is a genetically inherited trait
Describe Fossils (the type, how they form, where they can be found and why, their relationship to evolution, why they’re important, ages of layer, etc.)
Answers
Answer:
Fossils provide evidence for the evolutionary change through now extinct forms that led to modern species. For example, there is a rich fossil record that shows the evolutionary transitions from horse ancestors to modern horses that document intermediate forms and a gradual adaptation o changing ecosystems.
Explanation:hope it help
Select all that are examples of Relative Dating:
(Please answer ASAP)
Answers
Answer:
a,b,d
Explanation:
Provide an
example of how energy from the sun affects patterns of movement in the ocean.
Answers
Answer:
The sun's heat evaporates some water and raises the concentration of the salt, causing the water to be more dense. Or it could be the gravitational pull of the sun from Earth, just like how the moon affects tides. I hope this helps you :)
Explanation:
hope this helped!
3. How is Acetyl-CoA prsluced during the acrobic oxidation of carbohydrates, and what happens to it? How is it produced during the aerobic oxidation of titty acids, and what happens to it
Answers
During the aerobic oxidation of carbohydrates, acetyl-CoA is produced through a series of metabolic reactions known as glycolysis and the citric acid cycle. During the aerobic oxidation of fatty acids, acetyl-CoA is produced through a process called beta-oxidation.
Pyruvate then enters the mitochondria, where it undergoes further processing to produce acetyl-CoA. This conversion occurs through a process called pyruvate decarboxylation, where pyruvate loses a carbon dioxide molecule and combines with coenzyme A (CoA) to form acetyl-CoA. Acetyl-CoA is a key molecule in energy metabolism and serves as a precursor for the citric acid cycle.
During the aerobic oxidation of fatty acids, acetyl-CoA is produced through a process called beta-oxidation. Fatty acids are broken down into two-carbon units, which then combine with CoA to form acetyl-CoA. This process occurs in the mitochondria, where fatty acids are sequentially cleaved into acetyl-CoA molecules. The acetyl-CoA molecules can enter the citric acid cycle to generate energy through oxidative phosphorylation.
Once acetyl-CoA is produced, it enters the citric acid cycle, also known as the Krebs cycle or TCA cycle. In this cycle, acetyl-CoA undergoes a series of enzymatic reactions, resulting in the production of ATP, NADH, and FADH2. These energy-rich molecules are then utilized in the electron transport chain to generate ATP through oxidative phosphorylation.
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Carmen conducted an experiment to determine if listening to different types of music would affect a person’s pulse. Her hypothesis was that pulse rate would change with different types of music. Each person listened to seven different selections of music for 30 seconds each. Each person’s pulse was taken before the music and then after each 30-second interval of music. The pulses were taken again after the music selections were completed. Based on her experiment, Carmen concluded that a person’s pulse rate changed when the person listened to different types of music
What can Carmen do to make her experiment more reliable?
A. add another variable to test
B. repeat the experiment several times
C. decrease the amount of time the test subjects are exposed to the music
D. putting each test subject in a different location while they listen to the music
Answers
HELP!! I WILL MARK YOU IF CORRECT AND GIVE A GOOD AMOUNT OF POINTS AS WELL! (Please answer quickly !)
Answers
They are the "lithosphere," "hydrosphere,"
"biosphere," and "atmosphere," respectively. There are sub-spheres within each of the four spheres.
What are the hydrosphere's five components?
Oceans, freshwater, groundwater, groundwater, glacier water, and water vapour vapour are the constituents.
What use does the hydrosphere serve?
The main significance of the aquatic environment is that it supports a variety of life forms, is crucial to ecosystems, and regulates the atmosphere. All of the water on the Earth is covered by the hydrosphere.
Answer: Atmosphere, Geosphere, Biosphere
What is the meaning of animal level and barangay level results in research?
Answers
Answer:
The points 2, -1+i√3, and -1-i√3 are right angles in the Argond plane because any two points are equally spaced.
Explanation:
Calculating distances We find that the total equals 2√3. Thus, a triangle has three sides of equal length, which is the definition of an isosceles triangle.
Animal level: Animal level results in research typically focus on analyzing or evaluating data, outcomes, or observations at the individual animal level. This level of analysis involves studying and understanding specific characteristics, behaviors, or responses of individual animals within a particular context or research setting. For example, in a study on the effects of a new drug on mice, animal level results would involve analyzing the drug's impact on each individual mouse in the experiment.
Barangay level: Barangay level results, on the other hand, pertain to the analysis and findings at the level of a barangay. A barangay is the smallest administrative division in the Philippines, roughly equivalent to a village or neighborhood. Barangay level research focuses on understanding phenomena, trends, or outcomes within a specific barangay or comparing different barangays. This level of analysis often involves examining social, economic, demographic, or other relevant factors that affect the community or population at the barangay level. For instance, a study on healthcare access in different barangays would involve analyzing data and findings specific to each barangay to understand variations in healthcare services or accessibility.
The choice of analyzing data or presenting results at either the animal level or barangay level depends on the research objectives, scope, and context of the study. It allows researchers to examine phenomena at different scales and gain insights into specific individuals or communities as well as broader patterns or trends.
Food Chain Worksheet 1-B
Answers
2. decomposers
3. food chain
4. food chain
5. consumer
Observe a vertical section of human skin through a tattoo, using low-power magnification. Note the location of the dispersed ink granules within the upper portion of the dermis. From a thin vertical section of a tattoo, it is not possible to determine the figure or word of the entire tattoo as seen on the surface of the skin. Compare this to the location of melanin granules found in dark (heavily pigmented) skin. Suggest reasons why a tattoo is permanent and a suntan is not.
Answers
Answer:
A tattoo is permanent because the pigments are applied into the dermis, while suntan is not permanent because it affects only the epidermis, which undergoes constant renewal
Explanation:
The epidermis is composed of cells located in the upper layers of the skin. The superficial epidermal layer is constantly being renewed by new cells by the processes of mitosis and keratinization, i.e., by cell division and accumulation of keratine in the cytoplasm of epidermal cells during their terminal differentiation. In consequence, a tan is not permanent because surface epidermal cells naturally exfoliate over time. Moreover, tattoos are permanent because tattoo pigments are injected into the dermis layer and dermal cells are not replaced. The dermis is a layer of the skin located between the epidermis and subcutaneous tissue.
When does the egg begin the 2nd round of meiosis?
A) when the egg was first made
B) before it is released from the ovary
C) after a sperm enters the egg cell
Answers
Answer: After ovulation the oocyte is arrested in metaphase of meiosis II until fertilization. At fertilization, the secondary oocyte completes meiosis II to form a mature oocyte (23,1N) and a second polar body.
Explanation:
construct a dichotomous key which can be used to identify the five antelopes shown in figure 1.1 use only visible features.
Answers
The dichotomous key used to identify the antelopes might be based on the presence/absence of certain muscles, weight, etc.
What is a dichotomous key?A dichotomous key is a system to classify species and/or taxonomic groups by using two different choices.
For example, the presence/absence of certain physical features can be used to identify the antelopes.
Moreover, the threshold in certain features such as weight/height can also be used to classify species.
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Which of the following represents a way that animals in a zoo are influenced by their environment? a. increased natural instincts b. decreased aggression c. unnatural behavior d. increased appetite
Answers
Answer:
The correct answer is c. unnatural behavior.
Explanation:
Animals in a zoo are influenced by their environment, and one of the ways this influence is manifested is through unnatural behavior. In a zoo setting, animals are often kept in confined spaces that may not mimic their natural habitats adequately. This can lead to behavioral changes and adaptations that are not typical of their wild counterparts. Animals may exhibit abnormal behaviors such as pacing, stereotypic movements, or self-injurious behaviors due to stress, frustration, or lack of environmental enrichment.
While it is possible for animals in a zoo to display increased natural instincts, decreased aggression, or increased appetite in certain situations, these outcomes are not universally applicable or exclusive to zoo environments. They can vary depending on the species, individual, and specific circumstances. However, unnatural behavior is a commonly observed consequence of animals being in an environment that does not fully meet their natural behavioral and environmental needs.
In order to maintain a high level of performance, what types of foods do you think an athlete should eat right before a race? Select one.
Answers
Answer:
According to me it's energy bars and fruits, but u can give ur own opinion.
How are kettle lakes formed
Answers
Answer:
Kettles form when ice detaches from a glacier. Eventually, it becomes wholly or partially buried in sediment and slowly melts, leaving behind a pit.
Answer:
A kettle lake is formed when an inactive block of ice breaks off of a glacier, as time goes on it gets buried sediment and begins to melt, as it melts it leaves behind a pit. Where eventually water will fill it up and the pit will become a body of water.
Given the DNA strand below,
transcribe and translate it.
TACAAGCCTACT
Answers
mRNA: AUGUUCGGAUGA
How does exhaling remove waste from the body? Explain the systems that make this happen, using complete sentences.
Answers
Exhaling removes waste from the body by expelling carbon dioxide through the respiratory system.
Exhaling plays a crucial role in removing waste from the body, particularly in the form of carbon dioxide (CO2), a byproduct of cellular respiration. The respiratory system, composed of the lungs and airways, is primarily responsible for this process.During inhalation, air containing oxygen is drawn into the lungs through the nose or mouth. Oxygen then diffuses across the lung tissue into the bloodstream, where it binds to hemoglobin and is transported to cells throughout the body. In the cells, oxygen is utilized in metabolic processes, generating energy and producing CO2 as a waste product.When we exhale, the diaphragm and intercostal muscles relax, causing the volume of the chest cavity to decrease. This action increases the pressure within the lungs, and air rich in CO2 is expelled from the body through the airways. The CO2 is removed from the bloodstream and eliminated from the body, reducing the waste buildup.Overall, the respiratory system's main function is to facilitate the exchange of gases, allowing oxygen to enter the body and carbon dioxide to be eliminated. Exhalation plays a vital role in removing waste by expelling CO2 and maintaining a balanced gas composition within the body.For more questions on respiratory
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25 points
Complete the sentence. Carbon flows between ____________, environmental storage centers that absorb and store carbon for long periods of time.
plants and animals
humans and air
rocks and soil
carbon sinks
Answers
Carbon is transfered by plants and animals.
Carbon flows between plants and animals, environmental storage centers that absorb and store carbon for long periods of time. Thus, the correct option is A.
What is Carbon cycle?Carbon cycle is one of the main biogeochemical cycles which has four main steps. In this first, carbon enters into the atmosphere as CO₂. CO₂ is absorbed by the autotrophs such as green plants for photosynthesis. Then, the animals consume plants as food, thereby, incorporating the carbon into their system. Afterwards, animals and plants die, their bodies decompose and the carbon is reabsorbed back into the atmosphere.
In this, plants use carbon dioxide for photosynthesis. Through this, they remove the inorganic carbon from the atmosphere and incorporate it into the plant's tissues in the form of sugars such as glucose, sucrose and starch. Animals get carbon by eating the plants or by hunting other animals.
Therefore, the correct option is A.
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On the photomicrograph of bone below, identify all structures listed in the key to the left.
Answers
On the Structure of Compact Bone, the order of labelling are:
canaliculilamellacentral canallacunaWhat are these part known for?The photomicrograph shows a cross-section of a Haversian system, which is the basic unit of compact bone. The Haversian system consists of a central canal surrounded by concentric layers of bone called lamellae.
The osteocytes are located in lacunae that are arranged in rows along the Haversian canal. The canaliculi connect the lacunae to each other and to the Haversian canal. The central canal contains blood vessels and nerves that supply the osteocytes. The compact bone is arranged in columns called osteons.
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If the bird population is directly proportional to the average monthly temperature, which month would have the LOWEST temperature?
Question 1 options:
8- August
12-December
1- January
10 October
Answers
Answer:
December
Explanation:
If the bird population is directly proportional to the average monthly temperature, 12 december would have the lowest temperature.
What is population?
The population of an organism can't survive if it exceeds it's carrying capacity. If animal population increases the population that eat that animal might also increase
The causes that affect population growth animals that if there are more plants than usual in area, populations of animals that eat that plant may increase. If animal population increases the population that eat that animal might also increase.
The effects of animals population can be dangerous and when population exceed the carrying capacity of their environment, animal suffer of malnutrition and disease. When predators became scarce due to over population, the weekar species of animal start or die in other ways .
Therefore, If the bird population is directly proportional to the average monthly temperature, 12 december would have the lowest temperature.
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Identify the name of each of the pathways [A, B, C]
![Identify the name of each of the pathways [A, B, C]](https://i5t5.c14.e2-1.dev/h-images-qa/contents/attachments/8a9WdSOOHCQrRFeu9V0viIUPWvX8iyfI.png)
Answers
Answer:
C [Krebs cycle]
B [glycolysis]
Which response would be expected from stimulation of the sympathetic nervous system? (There's only one answer)
activation of the adrenal glands
constriction of pores and reduced sweat rate
increased storage of sugar in the liver
return of heart rate and respiration to resting levels
Answers
Answer:
Activation of the adrenal glands
Explanation:
The sympathetic nervous system directs the body's response to dangerous or stressful situations. When the sympathetic nervous system is stimulated, the nerves prepare the organs for stress. This includes increasing the heart rate and increasing the blood flow to one's muscles, both of which are regulated by your adrenal glands.