Answer:
this question is asking what an adaptation is or what an adaptive trait is.
Explanation:it has been hypothesized that sympatric speciation of pine beetles may occur through the isolation of populations as a result of increasing dietary ...
Which event is caused by the transmission of waves?
OA. A sound echoes through a canyon.
OB. A fish in a pond looks larger than it is.
OC. A sound is heard through a door.
D. An image of a face appears in a mirror.
Describe the structure and function of the nephron, including an explanation of the processes of secretion, filtration, and reabsorption. Indicate the primary location in the nephron where each process occurs and explain how, in total, these processes coordinate with the cardiovascular system to help the body maintain homeostasis.
The nephron is the filtration unit of the kidney.
It consists of a tubule that is connected with collecting duct at one end and a cup-shaped structure at the other end. This cup-shaped structure is called ‘Bowman’s capsule’. Every Bowman’s capsule contains a cluster of capillaries, called ‘Glomerulus’, within the cup-shaped structure. The blood enters into Glomerulus through afferent arteriole of the renal artery and leaves it through the efferent arteriole. Together, the glomerulus and its surrounding Bowman's capsule are called a renal corpuscle.
Blood enters the glomerulus through a small artery supplying the glomerulus with unfiltered blood called the afferent arteriole. Another vessel, a small artery carrying filtered blood away from the glomerulus, is called the efferent arteriole. These two arterioles play a key role in helping the glomeruli's capillaries perform the process of ultrafiltration.
Nephron starts from Bowman’s capsule and consists of the following parts: proximal convoluted tubule (in the renal cortex), the loop of Henle (in the renal medulla), and distal convoluted tubule (in the renal cortex).
i) proximal convoluted tubules (PCT): it is a proximal part of renal tubules next to Bowman’s capsule. It is lined with microvilli. Maximum reabsorption of water, glucose, amino acids and electrolytes takes place here.
ii) The loop of Henle: It is U shaped middle portion of renal tubules. It is composed of ascending and descending loop. Ascending loop is thick-walled and impermeable to water while the descending loop is thin-walled and permeable to water. The countercurrent mechanism is a crucial role of the loop of Henle.
iii) Distal convoluted tubules (DCT): It is the distal part of renal tubules that lead to collecting ducts. It is similar in structure and function with PCT. Functioning of Nephron:-
1. Filtration: Filtration of blood takes place in Bowman’s capsule from the capillaries of the glomerulus. The filtrate passes into the tubular part of the nephron. This filtrate contains glucose, amino acids, urea, uric acid, salts and a major amount of water.
2. Re-absorption: As the filtrate flows along the nephrons, substances such as glucose, amino acids, salts, and water are selectively re-absorbed into the blood by capillaries surrounding the nephron tube the leadule.
The amount of water re-absorbed depends on the need of the body and also on the amount of wastes to be excreted.
3. Urine: The filtrate which remains after re-absorption is called urine. Urine contains dissolved nitrogenous waste, i.e. urea and uric acid, excess salts and water. Urine is collected from nephrons by the collecting duct to carry it to the ureter.
The nephron is the filtration unit of the kidney.
It consists of a tubule that is connected with collecting duct at one end and a cup-shaped structure at the other end. This cup-shaped structure is called ‘Bowman’s capsule’. Every Bowman’s capsule contains a cluster of capillaries, called ‘Glomerulus’, within the cup-shaped structure. The blood enters into Glomerulus through afferent arteriole of the renal artery and leaves it through the efferent arteriole. Together, the glomerulus and its surrounding Bowman's capsule are called a renal corpuscle.
Blood enters the glomerulus through a small artery supplying the glomerulus with unfiltered blood called the afferent arteriole. Another vessel, a small artery carrying filtered blood away from the glomerulus, is called the efferent arteriole. These two arterioles play a key role in helping the glomeruli's capillaries perform the process of ultrafiltration.
Nephron starts from Bowman’s capsule and consists of the following parts: proximal convoluted tubule (in the renal cortex), the loop of Henle (in the renal medulla), and distal convoluted tubule (in the renal cortex).
i) proximal convoluted tubules (PCT): it is a proximal part of renal tubules next to Bowman’s capsule. It is lined with microvilli. Maximum reabsorption of water, glucose, amino acids and electrolytes takes place here.
ii) The loop of Henle: It is U shaped middle portion of renal tubules. It is composed of ascending and descending loop. Ascending loop is thick-walled and impermeable to water while the descending loop is thin-walled and permeable to water. The countercurrent mechanism is a crucial role of the loop of Henle.
iii) Distal convoluted tubules (DCT): It is the distal part of renal tubules that lead to collecting ducts. It is similar in structure and function with PCT.
The filtration unit of the kidney is known as the nephron. It is consisting of tubule that is linked with a collecting duct at one side and a cup-shaped structure at the other side. This cup-shaped structure is known as‘Bowman’s capsule’.
What is nephron?It is the functional and structural unit of the kidney, it is a filtration unit of the kidney having glomerulus, and a tubule.
Filtration: Blood filtration is takes place in Bowman’s capsule from the capillaries of the glomerulus.
Reabsorption: When blood filtrate flows along the nephrons, molecules of amino acids, salts, glucose, and water are by selection re-absorbed into the blood by capillaries.
Secretion: hydrogen ions and waste ions flows from the capillaries into the renal tubule, this process is known as secretion.
Therefore, nephron is the filtration unit of the kidney.
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2. Which of the following is an inference?
A. You believe that a tree has 43 tree-rings by counting them.
B. You believe the moon has craters when you look through the telescope.
C. You believe the temperature is 75 degrees F by checking the thermometer.
D. You believe it rained when you see a mud puddle.
Answer:
D. You believe it rained when you see a mud puddle.
Explanation:
A. is incorrect because an inference is an educated guess, and counting 43 tree rings is a conclusion.
C. is also incorrect because you found the temperature with a thermometer, there was no inference made before checking it.
B. is incorrect; inferences are based on past experiences/knowledge, which looking through a telescope at craters on the moon is not doing. It does not disclose other means of reaching the conclusion.
D. is correct. Using skills of observation, you infer that the mud puddle could have been caused by rain.
You believe it rained when you see a mud puddle is an inference. Thus, option D is correct.
Inference is the process of drawing a conclusion from evidence. It is a type of reasoning that involves using existing information to make educated guesses about missing pieces of information. Inferences can be made in many different contexts, such as in everyday life, in literature, and in science.
In other words, an inference is a conclusion that is drawn from evidence. In this case, the evidence is the mud puddle, and the conclusion is that it rained.
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What is one condition that is necessary for a hurricane to form
Answer:
humid air
Explanation:
For one to form, there needs to be warm ocean water and moist, humid air in the region. When humid air is flowing upward at a zone of low pressure over warm ocean water, the water is released from the air as creating the clouds of the storm. As it rises, the air in a hurricane rotates.
Komodo dragons are a species endemic to which country?.
Answer:
Indonesian
Explanation:
Indonesian is named after the island where humans spotted a dragon-like creature for the first time, the Komodo dragon is an endemic Indonesian species found on Komodo Island and its neighboring islands.
The development of a new experimental method is most likely to change a theory if it makes it possible to
analyze samples when they are frozen.
perform the experiment in a different lab.
obtain and analyze results more quickly.
study a larger sample size than before.
The development of a new experimental method is most likely to change a theory if it makes it possible to study a larger sample size than before.
What is a theory?A theory is a scientific explanation of a phenomenon which is backed by strong experimental results.
We know that science is dynamic and theory changes with increasing evidence. Hence, the development of a new experimental method is most likely to change a theory if it makes it possible to study a larger sample size than before.
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Answer:
IT IS DDDDDD study a larger sample size than before.
Explanation:
ONEDGE 2023
What idea did Francis Redi's experiment with the meat and maggots disprove?
*
a. biogenesis
b. spontaneous generation
c. endosymbiosis
d. primordial soup
What are other producers besides plants
Answer:
bacteria,moss and algae
Jenna wants to know which brand of new batteries last longest in her digital camera. She writes the following statement on her lab sheet: The most massive battery will last the longest. What part of her investigation has she written?
A
analysis
B
hypothesis
C
question
D
conclusion
Answer:
b- hypothesis
Explanation:
B, because you are writing what you think the outcome is. Which is a hypothesis.
Which step comes between identifying a need and generating ideas in the technological design process?
The step that comes between identifying a need and generating ideas in the technological design process is identify a problem.
What is technological design?Technological design is the process in which several techniques are used to developed new ideas or technology for efficiency.
Therefore, The step that comes between identifying a need and generating ideas in the technological design process is identify a problem.
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Widow's peak is dominant to straight hairline, and freckles are dominant to no freckles.
One parent is heterozygous for both traits and one parent has a straight hairline and
no freckles. Use H for hair, and F for freckles. List the genotypes of the parents and
then complete a dihybrid cross for their potential offspring. List the phenotypic ratio
of the offspring once you have completed the cross.
The phenotype ratio would be 25% each for widow's peak and freckles, widow's peak without freckles, straight hairline with freckles, and straight hairline without freckles.
Dihybrid crossingGenotype of the heterozygous parent: HhFf
Genotype of the other parent = hhff
Crossing the two parents:
HhFf = 1/4 = Widow's peak, freckles
Hhff = 1/4 = Widow's peak, no freckles
hhFf = 1/4 = straight hairline, freckles
hhff = 1/4 = straight hairline, no freckles.
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All of the following are ways in which DNA technology plays a role in medicine except
All of the following are ways in which DNA technology plays a role in medicine except examining paternity.
What is DNA?
This is referred to as deoxyribonucleic acid and contains genetic instructions in organisms.
DNA technology plays a role in medicine such as formulation of drugs, high yield crops etc.
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what are the characteristics of kingdom monera
see the attached file!!!
All of the following are factors in natural selection except…
A.) Competition with other organisms
B.) Environmental changes such as climate shifts.
C.) Technological advances in food production
D.) Organisms selecting advantageous trays among their mates to pass along traits to their offspring.
Answer:
C.) Technological advances in food production
Explanation:
How can these chemicals harm people? Which people are most at risk and why?
Chemicals such as concentrated acids and bases are harmful when they are consumed or come in contact with the skin.
What are chemicals?A chemical is a substance which can take part in chemical reactions and which possesses chemical properties.
Chemicals can be harmful or harmless.
Chemicals can cause harm to people when consumed or when they come in contact with the skin.
Chemicals such as acids and bases in their concentrated forms cause burns to the skin and the internal organs and mat lead to death.
Chemists who work with chemicals are most at risk to harm from chemicals.
Therefore, chemicals such as acids and bases in their concentrated forms are harmful when they are consumed or come in contact with the skin.
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If a disease wiped out the hare population, which of the following best describes what would happen to this ecosystem?
The population of voles and lemmings would decrease because the arctic fox would rely on them for more food
The arctic fox population could decrease because they would lose a food source
The lemming population would increase because the hares would no longer be eating them
Both A and B
Answer:
B
Explanation:
If a disease wiped out the hare population, then result would be :
The arctic fox population could decrease because they would lose a food source.
It cannot be A because although the arctic fox population might decrease, it would only cause an increase in its prey's population as there are less predators (arctic fox) to consume it.
Read the article to learn more about the human
chromosomes. Use chromosomes 11 and 17 to
answer the following questions.
Chromosome Map
Chromosome 11 is made of over million base
pairs.
Approximately how many genes are found on
chromosome 11?
DONE
List the genetic disorders found on chromosome
11.
DONE
What do you know about any of those disorders?
DONE
Chromosome 11 in humans is made up of over approximately 135 million base pairs. It represents about 4-5% of the total DNA in cells.
What do you mean by Chromosomes?Chromosomes may be defined as a thin-thread-like structure that is present in the nucleus of the cells that contains genetic information.
Chromosome 11 contains about 1300-1400 genes that furnish instructions for the cells to make proteins for metabolic activities.
The genetic disorders that are associated with the chromosome 11 are:
AlbinismThalassemiaAutismJacobsen syndromeBeta-Ketothiolase deficiency and many more.Each of the above genetic disorders has its own specific modes of causing symptoms and infections in the human body.
Therefore, it is well described above.
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Answer:
A structure found inside the nucleus of a cell.
Explanation:
You look in the microscope and see sister chromatids moving to opposite sides of the cell. You conclude the cell is in:
Answer:
Anaphase is the right answer
Explanation:
WILL MARK BRAINLIST!! you can only answer one part if you don't feel up to it all
Answer to b
"Upon exposure to insecticides, insects that do not carry the resistance genes die, thus allowing the individuals with the resistance genes to survive and reproduce, creating more resistant insects."
Why can't populations continue to keep growing and growing?
Answer:
That would lead to overpopulation.
Explanation:
If overpopulation became severe, it could lead to increased homelessness, famine, and poverty. These things are already an issue in our world and overpopulation would make it even worse. :( I hope this helps! :)
What is the difference between a food chain and a food web?
A. A food web shows multiple food chains that are interconnected.
B. A food chain shows multiple food webs that are interconnected.
C. A food chain is used when there are no decomposers present, a food web includes them and shows the recycling of nutrients.
D. A food web is only used when organisms that have multiple ways of getting energy are involved, such as Omnivores.
Answer:
A
Explanation:
A food web shows multiple food chains that are interconnected.
A cross is performed between a bird that is homozygous for red feathers and a bird that is homozygous for blue feathers. purple offspring result due to incomplete dominance. then, two of the purple offspring are crossed. what proportion of the offspring from the second cross will be purple? 1 in 4 2 in 4 3 in 4 4 in 4
The expected proportion of purples individuals in the F2 of a heterozygous cross (purple phenotype) is equal to 2 in 4.
What is a Punnett square?A Punett square is a diagram used to estimate the genotypic and phenotypic proportions in a given cross.
In this case, purple individuals (Aa genotype) will be:
A a
A AA Aa
a Aa aa
In conclusion, the expected proportion of purples individuals in the F2 of a heterozygous cross (purple phenotype) is equal to 2 in 4.
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Answer:2 in 4
Explanation:
I got it right on edge
What is another natural process that could contribute to the evolution of a species genomes?
Answer: A natural disaster, such as an earthquake or a volcanic eruption, could affect the evolution of a species’ genome. These disasters could kill a large number of organisms at once, decreasing the genetic variation in the gene pool. In some cases, large populations may become separated, which can lead to several smaller populations evolving in different ways.
Explanation:
A closed ecosystem made by humans is called…
Answer: A closed ecological system for an entire planet is called an ecosphere.
Explanation: A closed ecological system for an entire planet is called an ecosphere. Man-made closed ecological systems which were created to sustain human life include Biosphere 2, MELiSSA, and the BIOS-1, BIOS-2, and BIOS-3 projects.
Answer:
An Ecosphere- according to the internet
Students were learning about photosynthesis in science class. the teacher asked the class why photosynthesis was important. which student responses were correct about the importance of photosynthesis?.
Answer:
I have no idea
Explanation:
the app is making me write this sorry
What are the advantages and disadvantages of humoral
response ?
Please help thank you
The immune response involving the transformation of B - cells into plasma cells that produce and secrete antibodies to a specific antigen. It develops in bone marrow.
Advantages of Humoral response
Humoral immunity develops quickly than cell mediated immunity.Extracellular microorganisms and there poisons are targeted by humoral immunity.Humoral immunity is considered to play an important role in MS pathogenesis.Disadvantages of Humoral response
humoral immunity involves a set of molecular components and processes that differ from cell-mediated immunity.Requires expensive robotics for printing arrays.Learn more about Humoral immunity here:
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Pancreatic juice contains all of the following substances except: Question 7 options: a) pepsinogen. b) nucleases. c) amylase. d) chymotrypsin.
Pancreatic juice contains all of the following substances except nucleases. Thus, the correct option is B.
What are the enzymes that Pancreatic juice contains?Pancreatic juice contains enzymes like trypsinogen, chymotrypsinogen, elastase, carboxypeptidase, pancreatic lipase, amylase, and pepsinogen.
Pancreatic juice is secreted by the pancreas, which possesses a diversity of enzymes that helps in the digestion of proteins, fats, lipids, carbohydrates, etc.
Therefore, it is well described above.
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Which of the following creates variation through and random combining of genetic information?
A. evolution
B. mutations
C. lateral gene transfer
D. reproduction
Answer:
B. mutations
Explanation
I believe this is the answer because even though mutations can be bad, there are also good as they can provide genetic variation to a population, which can result in the trait being passed to the offspring.
Answer:
D
Explanation:
In a marine ecosystem, an already existing large population of purple coloured sea urchins increases as starfish eats other colours. Such a type or selection represents
Check for the attachment for the options
explain your answer
This type of selection represents Disruptive selection.
What is Disruptive selection?Disruptive selection is also called diversifying selection, describes changes in population in which extreme values for a trait that are favored over intermediate values.
So we can conclude that purple coloured sea urchins increases as starfish eats other colour, this type of selection represents Disruptive selection.
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The phosphorus cycle differs from the biogeochemical cycles in that
it does not have an atmospheric reservoir.
it does not have an oceanic reservoir.
there is no assimilation of phosphorus.
there is no decomposition of phosphorus.
The phosphorus cycle differs from the biogeochemical cycles because it does not have an atmospheric reservoir.
Why phosphorus cycle differs from the biogeochemical cycles?
Phosphorous cycles move through several components of the biosphere, hydrosphere, and geosphere but not atmosphere whereas the biochemical cycle moves through all sphere.
So we can conclude that the phosphorus cycle differs from the biogeochemical cycles because it does not have an atmospheric reservoir.
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The phosphorus cycle differs from the biogeochemical cycles in that it does not have an atmospheric reservoir. Option A, This is further explained below.
What is the phosphorus cycle?Generally, the phosphorus cycle is simply defined as the planet's phosphorus being locked up in rocks and sediments and must be extracted by processes like weathering.
In conclusion, In contrast to biogeochemical cycles, the phosphorus cycle does not include an atmospheric reservoir.
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