Answers
Why does facilitated diffusion happen:
~ It regulates what goes in and what goes out of the cell
~The cell membrane is permeable to only a select few types of molecules and the molecules that are allowed to move across the cell membrane must be non-polar molecules which are small in size
What direction the particles diffuse in:
~From one side of the membrane where the substrate concentration is high to the other side of the membrane where the concentration is lower
~Diffuses across membranes down the concentration gradient
The molecules that help in this process:
~carbohydrates, amino acids, nucleosides, and ions
Hope this helped you- have a good day bro cya)
Related Questions
Wood is a substance that burns in the presence of oxygen. Which best describes this property of wood?
O reactive
O combustible
metallic
O sour
Answers
What helps water move across the
membrane quicker?
Answers
Answer:
The sell membrane
Explanation:
Hope it helped
Answer:
A channel protein
Explanation:
A channel protein, a type of transport protein, acts like a pore in the membrane that lets water molecules or small ions through quickly. Water channel proteins (aquaporins) allow water to diffuse across the membrane at a very fast rate. Ion channel proteins allow ions to diffuse across the membrane.
Can someone write this in different words please?
I believe that this experiment was helpful in helping me understand the concept of
DNA and DNA fingerprinting. The lab made it very simple to understand the concept of DNA fingerprinting and how it is used. It gave a helpful simulation of how DNA finger printing is used in crime scenes and how different everyone's DNA is. Overall, this lab did help me understand the concept of DNA fingerprinting more
Answers
I found this experiment really helpful in understanding the concept of DNA and DNA fingerprinting. The lab made it easy to grasp how DNA fingerprinting works and its practical applications. It provided a great simulation of how DNA fingerprinting is used in crime scenes and highlighted the distinctiveness of each individual's DNA. Overall, this lab greatly improved my understanding of DNA fingerprinting.
Nadeau et al., (Royal Soc. B. 2007) Reconstructed dN/dS ratios for genes involved in sexually dimorphic plumage in pigeons and their relatives.
i. Let’s imagine that Nadeau et al., tested 5 genes, and got the followingdN/dS ratios:
gene1: 0.01
gene2: 0.05
gene 3: 0.90
gene 4: 1.01
gene 5: 2.34
Which gene has a dN/dS ratio that provides the strongest evidence of negative (‘purifying’) selection?
Answers
Answer:
The correct option is gene 1 with the dN/dS ratio of 0.01
Explanation:
In order for negative selection to occur, the dN/dS ratio has to be between 0 and 1. There three genes that lie within this range, and hence, we can choose the smallest one to provide the strongest evidence among those to represented as the one being negatively selected. Where the dN/dS ratio is equal to 1, it means neutral and where the dN/dS ratio is greater than 1, it means positive selection.
Hope that answers the question, have a great day!
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Ask another question about the cause of the rise in global temperatures over the last century. Describe the evidence that would help you construct and support an answer to this question.
Answers
What role does human activity play in the rise in global temperatures over the last century?
To answer this question, evidence such as historical temperature data, greenhouse gas emissions data, and climate models can be examined. Additionally, studies on the effects of deforestation, industrialization, and transportation on the environment can be analyzed.
Other factors that may contribute to the rise in temperatures, such as natural climate variability and solar activity, would also need to be considered and evaluated.
Ultimately, a comprehensive analysis of these various factors would be necessary to determine the extent to which human activity has contributed to the observed rise in global temperatures.
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What is a organisms phenotype
Answers
Answer:
penotype
Explanation:
Set of genes organism carries
Answer: its specific set of physical traits
Explanation:
3. What evidence was provided for localized functions inherent to specific anatomical brain structures during execution of behavior and mental processes?
Answers
Evidence from studies of brain lesions and neuroimaging techniques supports the concept of localized functions in specific brain structures during the execution of behavior and mental processes.
There is substantial evidence supporting the localized functions of specific anatomical brain structures during the execution of behavior and mental processes. One such piece of evidence is the study of patients with brain lesions. By observing the behavioral and cognitive deficits resulting from damage to specific brain regions, researchers have been able to identify the functions associated with those areas. For example, damage to the prefrontal cortex can lead to impaired decision-making and planning abilities. Additionally, neuroimaging techniques, such as functional magnetic resonance imaging (fMRI), have provided evidence for localized functions. These techniques allow researchers to observe changes in brain activity during specific tasks, providing insight into the regions involved in those tasks.For more questions on neuroimaging
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A particular cross gives a modified dihybrid ratio of 9:7. What phenotypic ratio would you expect in a testcross of the fully heterozygous F1 crossed with the fully recessive type
Answers
Answer:
3:1
Explanation:
Due to technical problems, you will find the complete explanation in the attached files.
When cells are dividing it is important to understand that they have to move chromosomes equally to both new cells based on this illustration describe what is a chromosome made of
Answers
Answer:
A chromosome is made out of DNA and proteins.
Explanation:
We can see the labels on the image, with the DNA and proteins inside the chromosomes.
What is one way the Green Revolution impacted food production?
Answers
Answer:
Loss of Small Farms to Large Commercial Farms
The Green Revolution's method to increase food production and eliminate hunger is to introduce technologies such as bio-engineered seeds and chemicals that are developed to increase yields.Explanation:
I hope it's help ƪ(‾.‾“)┐
To produce starch, glucose molecules bond together and release a water molecule through which process?
O photosynthesis.
O cellular respiration.
O nucleotides.
O dehydration synthesis.
Answers
To produce starch, glucose molecules bond together and release a water molecule through dehydration synthesis. Therefore, option (D) is correct.
To produce starch, glucose molecules undergo a process called dehydration synthesis. During dehydration synthesis, two glucose molecules bond together, and a water molecule is released as a byproduct. This reaction is also known as a condensation reaction, as the joining of two molecules results in the formation of a larger molecule and the release of water.
In the case of starch formation, multiple glucose molecules link together through dehydration synthesis, creating a long chain of glucose units, which is the structure of starch. This process is essential in the synthesis of various biological molecules, including carbohydrates, proteins, and lipids, where smaller subunits are joined together to form larger macromolecules through the removal of water molecules. Therefore, option (D) is correct.
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Carolina uses a microscope to view a soil sample taken from her backyard. Which part of the soil
would she ONLY be able to see with a microscope?
A bacteria
B grass
C rainwater
D rocks
Answers
Answer: A) bacteria
Explanation: bacteria is too small to be seen without a microscope and the rest can be seen without a microscope making A) Bacteria the only correct answer
Give two examples of how homeostasis helps regulate the human body.
Answers
Answer:
Here are two examples of how homeostasis regulates different aspects of the body: Get homework help from firstgradeessays[at]gm ail. c om. Quality is a priority.
Body Temperature Regulation: The human body has a set temperature range (around 36-37 degrees Celsius or 98-99 degrees Fahrenheit) that needs to be maintained for optimal functioning. When the body temperature rises due to exercise or external heat, homeostatic mechanisms helps to cool the body. These mechanisms include sweating, which helps dissipate heat through evaporation. Dilation of blood vessels near the skin surface facilitates heat loss. Conversely, if body temperature drops, homeostatic responses like shivering and constriction of blood vessels occur to generate heat and conserve warmth.
Blood Glucose Regulation: Maintaining blood glucose levels within a narrow range is crucial for proper physiological functioning. After a meal, blood glucose levels increase, triggering the release of insulin from the pancreas. Insulin helps facilitate the uptake of glucose by cells, reducing blood glucose levels back to normal. On the other hand, when blood glucose levels drop (e.g., during fasting or exercise), the pancreas releases glucagon, which stimulates the liver to release stored glucose into the bloodstream. This process raises the blood glucose levels and restores homeostasis.
Explanation:
Please answer the questions below. Point values are listed in parentheses.
In a simple ecosystem, there are two primary producers: species A and species B. Species A is eaten by species C and species D. Species E eats species B. And Species F eats E and D.
a. Please draw this food web.
b. Name a species in each trophic level
i. First trophic level
ii. Second trophic level
iii. Third trophic level
c. Name a secondary consumer in your food web.
Answers
Answer:
Lion.
Explanation:
Species A and B are the plants which are eaten by the primary consumer is called herbivore such as rabbit, zebra and deer. The specie C, D and E are the primary consumer which belongs to second trophic level. The specie F feeds on specie E and D so it is called carnivores and belongs to third trophic level. In the food web, Specie C is rabbit, specie D is zebra and specie E is deer. Lion is the specie F which feeds on both zebra and deer. The name of secondary consumer in the food web is lion.
At which point along this stream are sediments most likely to accumulate, forming a point bar?
Question 2 options:
A)
3
B)
2
C)
1
D)
4
Answers
Answer:
option A(3)
Explanation:
I think it helps you.
Answer:
3
Explanation:
Can someone answer this for me ( field of view lab)
Answers
The diameter of the high power field of view is 1075 µm.
How to determine diameter?To calculate the diameter of the high power field of view, use the formula:
(diameter (LP) x magnification of LP objective)/magnification of HP objective = diameter (HP)
Plugging in the values given:
(4.3 mm x 10)/40 = 1.075 mm
Therefore, the diameter of the high power field of view is 1.075 mm.
To convert this to micrometers, multiply by 1000:
1.075 mm x 1000 = 1075 µm
Therefore, the diameter of the high power field of view is 1075 µm.
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Determine which of the following is a courtship display.A. Dancing of beesB. Howler Monkey callC. Tiger stripesD. Peacock feathers
Answers
The example that is a courtship display is the peacock feathers, its bright coloration is intended to attract females, whilw the other examples have different functions such us indicate the location of a food source (dancing of bees), fighting to defend the terretory (Howler Monkey call) and camouflage (tiger stripes).
So the correct answer is option D. Peacock feathers.
6. Rebecca wants to see if her kitten prefers new chicken flavored treats over her
usual beef flavored treats. She puts 10 chicken treats in one bowl and 10 beef
flavored treats in another bowl. She sees which treats her kitten eats first and
repeats this experiment for 3 days,
a. Independent Variable =_
b. Dependent Variable =
c. Control =
Answers
Answer:
independent: treat flavor
dependent: which treat the kitten eats first
control: beef flavored treat
Explanation:
In Rebecca's experiment, the independent variable is the type of treat, the dependent variable is the kitten's preference of treat, and the control includes factors such as the number of treats in each bowl and the timing of the experiment.
Explanation:In this experiment, the independent variable is the type of treats given to the kitten, either chicken flavored or beef flavored. The dependent variable is the kitten's preference, determined by which bowl the kitten eats from first. The control could be factors like the number of treats in each bowl (which is kept constant at ten), the time of the experiment, the location of the bowls, etc, which are kept unchanged in the experiment to ensure that any change in the kitten's behavior can be attributed to the change in the variable being tested, not due to some extraneous factors.
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Draw a geologic feature with at least three layers that demonstrates the principle of lateral continuity.
Answers
A geologic feature with at least three layers that demonstrates the principle of lateral continuity is called a Grand Canyon.
According to the lateral continuity concept, sedimentary rock strata were formerly continuous over wide areas. As a result, any layer discontinuities must be the result of erosion or other geologic processes.
The layers in this sketch are continuous laterally, which means they extend in all directions while holding onto their thickness and makeup. We can presume that the layers go farther in all directions even though we can only see a small section of them in this sketch. This is significant because it enables geologists to link the age and make-up of distinct rock layers.
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any want help me to get secret ending for payday 2
Answers
Answer:
...
Explanation:
1. It consists of all the population of organisms living in a particular
ecosystem
a. Biosphere b. population C. ecosystem
d. community
Answers
Answer:
The answer is a.population
an insect population is growing in such a way that the number in each generation is approximately 1.5 times that of the previous generation. if there are 100 insects in the first generation, approximately how many insects will there be in the fourth generation
Answers
Answer:
Approximately 338
Explanation:
Since each generation of the insect is approximately 1.5 times that of the previous generation. Therefore,
Population of insect in the first generation = 100
Population of insect in the second generation = 1.5 × 100
= 150
Population of insect in the third generation = 1.5 × 150
= 225
Population of insect in the fourth generation = 1.5 × 225
= 337.5
The population of insect in the fourth generation is approximately 338.
Please help!!- timed-60pts!
___________________________
answer individually
___________________________
1. The graph shows the distribution of the weights of individual dogs in a population of dogs.
Answer the following questions using the axes provided.
a) Draw a possible curve for the population several generations later if the population has stabilizing selection
b) draw possible curve for the population several generations later of the population has directional selection
c) draw a possible curve for the population several generations later of the population has a destructive selection
d) how do these selective pressures affect the genetic variation in a population
2.a) in what way is the genetic code, and all organisms of the
Answers
a) Stabilizing Selection: Narrower and taller curve, peak shifts towards the average weight.
b) Directional Selection: The curve shifts towards the selected extreme phenotype.
c) Destructive Selection: Bimodal curve with peaks at the extreme phenotypes, reduction in the number of dogs with intermediate weights.
a) Stabilizing selection favors the average or intermediate phenotype and reduces the variation in the population. In this case, the curve would become narrower and taller, with the peak shifting towards the average weight (around 30 in this example).
The graph would show a decrease in the number of dogs at the extremes of the weight range and an increase in the number of dogs with weights close to the average.
^
|
| ----
| | |
Dogs | |
| | |
| | |
| | |
| | |
|___|___|______> Weight (in kg)
10 20 30 40 50
b) Directional selection favors individuals with a specific phenotype and leads to a shift in the population towards that extreme phenotype. If there is directional selection for higher weight, the curve would shift to the right, indicating an increase in the number of dogs with weights greater than the average.
The curve would become broader and flatter on the left side (lower weights) and narrower and taller on the right side (higher weights).
^
|
| ------
| |
Dogs |
| |
| |
| |
| |
|______|______> Weight (in kg)
10 20 30 40 50
c) Destructive selection occurs when extreme phenotypes are favored, leading to a reduction in the overall population size. In this case, the curve would become bimodal or have multiple peaks.
The peak(s) would shift towards the extremes (e.g., very low and very high weights), and the number of dogs in the intermediate weight range would decrease. The curve would show a decrease in the number of dogs with weights close to the average.
^
|
| ---- --------
| | | | |
Dogs | | | |
| | | | |
| | | | |
| | | | |
|_|__|______|____|______> Weight (in kg)
10 20 30 40 50
d) Stabilizing selection reduces genetic variation because it favors the average phenotype and reduces the frequency of extreme phenotypes. This decreases the overall range of genetic variation in the population.
Directional selection can either decrease or increase genetic variation, depending on the specific selection pressure. If the selection pressure is consistent over time, genetic variation may decrease as individuals with extreme phenotypes become more common.
However, if the selection pressure changes or fluctuates, it may maintain or even increase genetic variation as different phenotypes are favored at different times.
Destructive selection can also reduce genetic variation by favoring extreme phenotypes and reducing the number of individuals with intermediate phenotypes. This can result in a narrower range of genetic variation in the population.
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Categorize the structures as homologous or analogous.
Answers
Answer:
Homologous structures refer to structures that have the same origin but differ in form or function, while analogous structures are those that are similar in form or function but developed independently.
Homologous structures refer to structures that have the same origin but differ in form or function, while analogous structures are those that are similar in form or function but developed independently.
Organs or skeletal components of animals and organisms that, by virtue of their similarity, suggest a connection to a common ancestor are known as homologous structures. These structures need not all look the same or serve the same purpose.
The forelimbs of vertebrates are a common illustration of homologous structures. The forelimbs of four-legged vertebrates like dogs and crocodiles, the arms of primates, the front flippers of whales.
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What is the answer for this. Asapp
Answers
0.51 is the frequency of the T allele. Therefore option D is correct.
To determine the frequency of the T allele, we need to consider the number of T alleles present in the population.
The number of T alleles in the population can be calculated as follows:
Number of T alleles = (Number of TT individuals * 2) + (Number of Tt individuals * 1)
Number of T alleles = (28 * 2) + (46 * 1) = 56 + 46 = 102
Since there are a total of 200 alleles in the population (2 alleles per individual), the frequency of the T allele can be calculated as:
Frequency of T allele = Number of T alleles / Total number of alleles
Frequency of T allele = 102 / 200 = 0.51
Therefore, the frequency of the T allele is 0.51.
Thus, the correct answer is D. 0.51.
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What is the function of the muscular system?
a) heat production
b) movement
c) posture
d) all of the above
Answers
Answer:
D- all of them.
Explanation:
Just took the test and got it right.
Discuss how the characteristics of livings organisms are important for their survival using two (2) characteristics as you discuss.
Answers
Answer:
Growth and development
Reproduction
Death
Growth and Development - All organisms grow and develop following specific instructions coded for by their genes.
Reproduction - For something to be considered alive, it must be able to reproduce and create offspring.
Death- All living organisms will die.
Now that you have had a chance to delve into epigenetics, think about how it applies to the argument between those who say we are a product of our nature and those who think we are nurtured into what we become. Your essay should be at least 250 words and include three different ways epigenetics affects our genes. Write your essay in a separate text document and upload it for submission here.
Answers
Epigenetics represents the intersection between environment (what we eat) and genetic factors.
What is Epigenetics?Epigenetics is a subdiscipline of genetics that studies how gene expression patterns may change according to different environmental inputs.
Epigenetic mechanisms include DNA methylation, histone modifications and non-coding RNAs pathways.
In conclusion, Epigenetics is the intersection between environment and genetics.
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Can you help me pick out these two answers for the questions using the cladogram please will mark brainlist and my AI can’t answer this question pleaseeee
Answers
The amniotic egg is a trait that separates amphibians from primates. The trait that separates rabbits and primates from crocodiles is eggs with shells. Rabbits and primates are mammals while crocodiles are reptiles.
The Amphibians are cold-blooded animals that spend part of their lives on land and some part in water. The primates on the other hand are warm-blooded animals and they produce milk(mammals). Species of monkeys, apes, and lemurs are some of the examples of primates.
The trait that is common in primates and rabbits is the presence of hair. The crocodiles on the other hand are different from them as they lay hard-shelled eggs which protect the inner portion of the egg and also allow gaseous exchange.
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which is not a topic of biology?
a. the distribution of sand on an ocean floor
b. the chemicals at work in the stomach
c. the speed at which a hummingbird flies