Sharks have gills with which they breathe oxygen and expel carbon dioxide.
The gills are organs that have a thin epithelium and in their interior blood vessels that transport oxygen and CO2. Because the epithelium is thin, it allows gas exchange between the seawater and the blood in the blood vessels of the gill. This is through a type of passive transport called simple diffusion (Oxygen and CO2 pass through the membranes without the help of any protein and without using energy in the form of ATP).
Therefore, the gas exchange in the gill would look something like this:
10. The atoms C, H, O makes up which of the carbon-based molecules below.
A. Carbohydrates and Protiens
B. Carbohydrates and Lipids
C. Nucleic Acids
D. Lipids
Answer: Lipids
Explanation:
. The atoms C, H, O makes up which of the carbon-based molecules below.
A. Carbohydrates and Protiens
B. Carbohydrates and Lipids
C. Nucleic Acids
D. Lipids
Shana designed a ramp that would roll a marble from point A to point B. She wants to see if she can use energy to set objects in motion. Where must point A be located in relation to point B in order for a force to act on the marble?
next to it
above it
below it
touching it
Answer:
touching it i think
Explanation:
Answer:
touching it
Explanation:
microbes are useful models for reserach for several reasons. which of the following reasons is incorrect?
The correct answer is D. The inaccurate statement is that studying microbes is expensive and complicated.
For a number of reasons, microbes make good study models. They can be studied in great detail because they are relatively simple organisms. Second, they are simple to produce in a lab, which makes them perfect test subjects. Third, their capacity for rapid evolution makes it possible for researchers to analyze the evolutionary process. They can also be used to research how organisms interact with their environment, including how various environmental factors affect the physiology and behavior of microbes. Microbes are tiny organisms like bacteria, fungus, protozoa, and viruses. They are too small to be seen with the human eye.
The complete question is:
microbes are useful models for reserach for several reasons. which of the following reasons is incorrect?
A. Microbes have a short life cycle, allowing for multiple generations to be studied in a short period of time.
B. Microbes can be easily manipulated and studied in a laboratory setting.
C. Microbes have complex systems, allowing for the study of complex processes.
D. Microbes are expensive and require a high level of technical expertise to study.
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Which statement explains one way that lakes form? A.Lava flows block a river. A.Lava flows block a river. B.Streams flow into shallow areas. C.Groundwater feeds into low-lying areas. D.Grassy wetlands get covered by a stream.
Answer: A. Lava flows block a river
Explanation: I just took the test
A lake in a volcanic crater created by explosive interest or disintegrating during a volcanic eruption is known as a volcanic crater lake. Crater lakes arise as water fills the fashioned depression inside the crater rim.
How does a lake form?The large masses of ice carved out remarkable pits and scrubbed the land as they moved slowly alongside. whilst the glaciers melted, water crammed those depressions, forming lakes.
How are mountain lakes fashioned?Lakes can also be created by means of landslides or mudslides that send soil, rock, or dust sliding down hills and mountains. The debris piles up in natural dams that can block the waft of a movement, forming a lake. Dams that beavers construct out of tree branches can plug up rivers or streams and make big ponds or marshes.
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Popular images of biodiversity often focus on large endangered animals, such as pandas and tigers. Why do you think it is equally important to consider the producer level of the food chain as endangered?
It is equally important to consider the producer level of the food chain as endangered because they sustain all the food chain. These organisms produce food.
What are producers?Producers are autotrophic organisms that generate their own food in a given ecosystem and/or food chain.
Producer autotrophic organisms include, among others, plants (terrestrial producers) and algae (marine producers).
Producer organisms are fundamental in a food chain because they sustain life at all trophic levels.
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Can you explain the methodology of Diets in space? (Explain your phenomenon)
Answer:
Today, astronauts eat a varied diet that is similar to what we eat on Earth. The menu aboard the International Space Station (ISS) includes more than a hundred items - from vegetables and fruit to pre-prepared meals and desserts. Even condiments such as ketchup and mustard are available.
Explanation:
Hope it helps?
An excitatory signal is received at the dendrite of a pyramidal glutamate neuron. When the signal is released from the incoming presynaptic dopaminergic axon, it is received as an inhibitory signal. However, this signal is not integrated properly with other incoming signals to that neuron. Which is the most likely site at which the error of integrating this signal with other incoming signals occurred
Answer:
Soma
Explanation:
Soma is the site at which the error of integrating an excitatory signal with other incoming signals occurred. Another name for Soma is perikaryon.
This signal integrates chemical encoding of signal transduction from all other incoming signals and this signal is not integrated properly with other incoming signals to that neuron.
Summarize Name the early individuals who had a major impact on the American public’s awareness of the environment and sustainability, and explain their accomplishments.
The first conversation efforts that were by Marsh, the preservation to fully protect the wilderness was Muir, the managing public lands wisely for their natural resources was Roosevelt and Pinchot, the blending of the preservation was Leopold, and the silent spring was Rachel Carson.
Natural resources are the resources that are drawn from the nature and that used with the few modifications. This includes the sources of the valued characteristics such as the commercial and the industrial use, the aesthetic value, the scientific interest and cultural value. the Natural resources that include oil, Rachel Carson. coal, the natural gas, metals, the stone, and sand. Air, sunlight, the soil, and water are other natural resources. Thus, the Natural resources are valuable as they are used to support the life and meet the needs of the people
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why is this technique Punnett squares used to calculate the probability of genotypes and phenotypes of one child. In other words, why is it inappropriate to say "Two out of four of their children will have brown hair?
I don’t understand this help meeee
Answer:
A Punnett square allows the prediction of the percentages of phenotypes in the offspring of a cross from known genotypes. A Punnett square can be used to determine a missing genotype based on the other genotypes involved in a cross. It is inappropriate to say "Two out of four of their children will have brown hair because the genes could are not always going to give you what you think you are going to get. Using punnett squares just predicts the outcome, but doesn't necessarily know 100%
Explanation:
4. The ATP yield from 2 moles of mitochondrial NADH under aerobic conditions in a eukaryotic cell would be: which option is correct a) 1 mole of ATP b) 2 moles of ATP c) 3 moles of ATP d) 4 moles of ATP e) 6 moles of ATP
The ATP yield from 2 moles of mitochondrial NADH under aerobic conditions in a eukaryotic cell is approximately 4 moles of ATP.
During oxidative phosphorylation, each mole of NADH can generate around 2.5 to 3 moles of ATP. Therefore, for 2 moles of NADH, the total ATP production would be in the range of 4 to 6 moles of ATP. While the more precise estimate falls within the 4 to 6 moles range, the closest option provided is 4 moles of ATP. It is important to note that the exact ATP yield can vary depending on factors such as the efficiency of the electron transport chain and the specific conditions within the cell.Since there are 2 moles of mitochondrial NADH, the total ATP yield would be around 4 to 6 moles of ATP. However, the most accurate option among the given choices is 4 moles of ATP.
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Which is a biotic factor?
Answer:
a living organism that shapes its environment
Explanation:
hope this helps
DNA is formed using four kinds of base subunits. In a double-stranded segment of DNA, the percentage of the base C is 18%. What is the approximate percentage of base T?
Answer:
The correct option is C 32%
According to Chargaff’s rule in a DNA molecule A = T and G = C and A + G + C + T = 100%. Here cytosine (C) is 18% hence G = 18%
∴
A + T = (100 – 36)%
∴
A + T = 64%
∴
A = 32%
Explanation:
What are the stages of bee development (eggs,larvae,pupae)
The stages of bee development are egg, larva, pupa, and adult. Eggs hatch into larvae, which then transform into pupae. Finally, adult bees emerge and undergo further maturation.
The stages of bee development are:
1. Egg: The bee life cycle begins when the queen bee lays an egg in a honeycomb cell.
2. Larva: The egg hatches into a larva, which is a legless, grub-like creature. The larva is fed a special diet called royal jelly, which stimulates its growth.
3. Pupa: The larva undergoes metamorphosis and transforms into a pupa. Inside the sealed cell, the pupa undergoes various changes, developing into an adult bee.
4. Adult Bee: After completing the pupal stage, the fully developed adult bee emerges from the cell. The bee then undergoes further maturation, such as its exoskeleton hardening, wings expanding, and adult coloration appearing.
It's important to note that there are three castes of bees: queen, worker, and drone. The development process for each caste is similar, but the diet and size of the cells they are raised in differ, leading to their distinct roles within the colony.
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A chemist measuring the viscosity of oils records the instruments and methodology used, so that another scientist will be able to achieve exactly the same results of the experiment. This is an example of ___________.
Answer:
This is an example of replication.
Explanation:
Getting a similar outcome when a trial is rehashed is called replication. Replication is significant in science so researchers can check their work. The consequence of an examination isn't probably going to be very much acknowledged except if the examination is rehashed ordinarily and a similar outcome is constantly acquired.
Hence, This is an example of replication.
Answer: c. replication
Explanation:
PLEASE SOMEONE HELP!
Drag each phrase to indicate whether it describes bottled water or tap water.
bottled water
tap water
Options for those
Costs less
produces transportation pollution
produces plastic waste
held to more stringent quality standards
Bottled water is often more expensive, produces transportation pollution, and contributes to plastic waste. In contrast, tap water costs less, doesn't generate transportation pollution, and doesn't produce plastic waste. Tap water is also typically held to more stringent quality standards than bottled water.
To correctly categorize each phrase as describing bottled water or tap water, let's analyze the given options:
1. Costs less: This phrase generally describes tap water. Tap water is often more cost-effective compared to bottled water, as it is supplied through municipal water systems and is readily available in households. Bottled water typically incurs additional costs associated with production, packaging, and transportation.
2. Produces transportation pollution: This phrase primarily applies to bottled water. The production and distribution of bottled water involve transportation, which contributes to carbon emissions and pollution. Tap water, on the other hand, doesn't typically generate transportation pollution since it is supplied through local water infrastructure.
3. Produces plastic waste: This phrase specifically pertains to bottled water. Bottled water is packaged in plastic containers, contributing to plastic waste and environmental concerns. Tap water, however, doesn't produce plastic waste as it is consumed directly from the tap without additional packaging.
4. Held to more stringent quality standards: This phrase generally describes tap water. Tap water is regulated by governmental agencies and must adhere to strict quality standards, including regular testing and monitoring. Bottled water is also subject to quality regulations, but the oversight and standards applied to tap water are often more extensive.
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Write a hypothesis about the effect of dry conditions on earthworm behavior. Use the "if... then. because..."format, and be sure to answer the lesson question, "How is earthworm behavior affected by external stimuli?"
If earthworms are exposed to dry conditions, then they will become more active and surface more frequently because they will be seeking moisture to prevent dehydration.
A hypothesis on the effect of dry conditions on earthworm behaviorThis hypothesis addresses the lesson question of how external stimuli, in this case, dry conditions, affect earthworm behavior. It predicts that the earthworms will respond to the dry conditions by changing their behavior in order to survive.
By surfacing more frequently, the earthworms will increase their chances of finding moisture and avoiding dehydration.
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An effective way to reduce the waste released into the environment would be to pass a law
OA. limiting the number of fish that can be caught in the river.
OB. requiring the company to release its wastewater into a local pond.
a
OC. requiring the factory to pump its water to a treatment plant.
OD. requiring people to avoid boating and fishing on the river.
Answer:
OC
Explanation:
In OA, by limiting the number of fish caught does not have any connection with the waste released. Its totally different idea.
In OB, pond is still a part of environment. Pond too have its own habitat and no mater if the company release less waste or too much waste, it still affect the environment.
In OD, by avoiding boating we dont have much to do. Still there is no correlation with redcing the waste released.
Which of the following is an application for cloning and polymerase chain reaction (PCR) technologies?
A. Amplification of DNA fragments from a drop of semen at a crime scene
B. Analyzing the speed of enzymatic function in chemical reactions
C. Generating large quantities of insulin for use by diabetics
D. Measuring blood cholesterol levels in routine medical tests
Answer: its A
Explanation: I took the test
fill in the blank. In a tissue type that undergoes a relatively great deal of mechanical stress, like the tissue that lines the intestine, you would expect to see an abundance of ________ between the individual cells of the tissue
In a tissue type that undergoes a relatively great deal of mechanical stress, like the tissue that lines the intestine, you would expect to see an abundance of desmosomes between the individual cells of the tissue.
Desmosomes are specialized and largely ordered membrane disciplines that intervene cell- cell contact and strong adhesion. tenacious relations at the desmosome are coupled to the intermediate hair cytoskeleton. Desmosomes are intercellular junctions that give strong adhesion between cells. Because they also link intracellularly to the intermediate hair cytoskeleton, they form the tenacious bonds in a network that gives mechanical strength to apkins. Desmosomes are a type of anchoring junction in beast apkins that connect conterminous cells. Anchoring junctions are button- suchlike spots set up each around cells that bind conterminous cells together. Desmosomes are common in epithelial apkins where they anchor keratin intermediate fibers to the membrane, but they're also set up in myocardial and Purkinje fibre cells of the heart.
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the seeds of the rice plant grow into seeding in a _____
Answer:
Grain
Explanation:
The rice seed is often called grain.
Put these processes of the water cycle in the correct order, starting at the point where the water is in a lake. * Rain, snow, or other precipitation falls. * Water evaporates into the atmosphere. 11 Water collects into larger bodies of water. 11 Water vapor condenses into liquid water.
Answer:
1. Water evaporates into the atmosphere.
2. Water vapor condenses into liquid water.
3. Water collects into larger bodies of water.
Explanation:
Carlton and Vanessa are lab partners in their biology class. One of their labs was to run the smell test experiment on each other.
When performing the smell test, Vanessa was quite good at noticing a difference between the various intensities of vanilla and also
the various intensities of evergreen. Although Carlton could distinguish what the vanilla and evergreen smells were, he couldn't tell
there was a difference in the intensities in the vanilla or the evergreen. Based on the information presented in this scenario, which
of the following is true?
Vanessa has a more sensitive difference threshold than Carlton.
Carlton has an impaired absolute threshold.
Vanessa has a better absolute threshold than Carlton.
Carlton has the superior performance with respect to the difference threshold.
Vanessa has an impaired absolute threshold.
Vanessa has a better absolute threshold and more sensitive difference threshold than Carlton, and Carlton has an impaired absolute threshold.
Carlton and Vanessa were lab partners for a biology class and were asked to run a smell test experiment on each other.
Vanessa was excellent at noticing the difference between various intensities of vanilla and evergreen.
Carlton, on the other hand, couldn't distinguish the difference in the intensities of both vanilla and evergreen, though he could tell the smells of both.
Hence, based on the information provided in the scenario, it can be inferred that Vanessa has a more sensitive difference threshold than Carlton, and Carlton has an impaired absolute threshold.
The two significant aspects that are involved in the scenario are absolute threshold and difference threshold.
The absolute threshold is the smallest quantity of a stimulus that an individual can detect, whereas the difference threshold is the minimum difference in stimuli that an individual can detect.
Carlton could recognize the stimuli's smell but not the difference in the intensity of vanilla and evergreen.
This shows that Carlton has an impaired absolute threshold.
He could not detect the smallest quantity of a stimulus to differentiate between the smells.
Vanessa was quite good at noticing the difference in the intensities of vanilla and evergreen.
This means that Vanessa has a more sensitive difference threshold than Carlton. She could detect the minimum difference in stimuli required to differentiate between smells.
Vanessa also has a better absolute threshold than Carlton as she could detect the smallest quantity of stimulus required to detect the smells.
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In chickens, comb shape is determined by genes at two loci (R, r and P, p). A walnut comb is produced when at least one dominant gene R is present at one locus and at least one dominant gene P is present at a second locus (genotype R_ P_). A rose comb is produced when at least one dominant gene is present at the first locus and two recessive genes are present at the second locus (genotype R_ pp). A pea comb is produced when two recessive genes are present at the first locus and at least one dominant gene is present at the second (genotype rr P_). If two recessive genes are present at the first and the second locus (rr pp), a single comb is produced. Give genotypes for comb shape of the parents in the following cross: Rose crossed with pea produces 20 walnut offspring.
a. RR PP × rr pp
b. RR Pp × rr pp
c. Rr PP × rr pp
d. Rr Pp × rr pp
e. Rr pp × rr pp
Answer:
in the obtained options, there is no dominant gene for the crossed pairs, therefore, no answer would be correct, however, when assigning a dominant character to the P gene, the correct answer would be:
E. Rr pp *rrPp
Explanation:
According to the information obtained we deduce:
Comb shape is produced by R and P
Comb of walnuts with an R or a P
Pink comb: 1 dominant P and R at the first locus and 2 recessive at the next locus
Pea comb: 2 recessive at the start and one dominant in the next position
1 single comb: 2 recessive at both loci
Rr pp × rr Pp will produce from the interbreeding: 2 walnuts, 1 single and 1 pea offspring.
We deduce that for the pink comb the genotype is: Rrpp
and for the pea comb it is rrPp
Rr pp × rr Pp generates crosslinks containing RrPp, rrPp, rrpp as children in a 2: 1: 1 ratio.
proteins are _____substances
Proteins are complex substances
Explanation:Proteins are basic components of all living cells and are therefore among the principal substances that make up the body. In addition to being necessary for the growth and repair of the body's tissues, proteins provide energy and act as enzymes that control chemical reactions in the cell.
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When jaw become large enough to hold the permanent teeth . The milk teeth fall and permanent teeth appear
The "exfoliation" or "shedding" of milk teeth is the name of the procedure.
What is the Dentition of Humans?The primary and permanent tooth sets make up the human dentition. Maxillary (upper) and Mandibular (lower) are the two opposing arches in which teeth are arranged. These can be split into their left and right halves along the midline (mid-sagittal plane).
Four Different Teeth Types and Their Purposes
The majority of individuals have 32 permanent adult teeth, which can be classified into four groups:
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Drag the terms to their spot in the diagram.
Light Energy
which stores the energy in
is captured in the process of
to be used in the process of
photosynthesis cellular respiration digestion
bio molecules non bio-molecules decomposition
Answer:
Light energy - is captured in the process of -> photosynthesis - which stores the energy in -> bio molecules - to be used in the process of -> cellular respiration
2. Summarize the evidence you have gathered to support your claim and explain
Microscopic organisms be so important for life on Earth
Answer:
Explanation:
to live
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Answer:
small fishes--tuna fish--dead animal material---crabs
Explanation:
follow the arrows from small fishes to crabs
Answer:
Answer is below
Explanation:
Small fish ---> Tuna Fish ---> Dead Animal Material ---> Crabs
This shows the path specifically followed from the small fish to the crabs
which organism is the decomposer
Answer:
Fungi are decomposers in the natural kingdom.
Explanation:
they do not rely on photosynthesis for energy, instead rely on breaking down dead organic matter such as animal corpses, dead plants, etc...
Answer:
Fungi and bacteria are decomposers. Decomposers jobs are to take remains of organisms and filter them into nutrients that help the ecosystem.
Find the stoma. Explain the gas exchange process that is taking place.
please help :(