Answer:
What tells a muscle when to contract?
Explanation:
(1) A message travels from the nervous system to the muscular system, triggering chemical reactions.
(2) The chemical reactions lead to the muscle fibers reorganizing themselves in a way that shortens the muscle--that’s the contraction.
(3) When the nervous system signal is no longer present, the chemical process reverses, and the muscle fibers rearrange again and the muscle relaxes.
Answer:
The nervous system generates a signal, which triggers a muscle to contract
Explanation:
anyone know this I don’t get the question
Answer: 5.000/ml
Explanation: density = mass/volume= 50/ 100=1/2 or 0.5 g/ mL
Smoking causes fibrosis within the lungs. How does this affect lung compliance?
Compliance is not affected so breathing doesn't change
Compliance decreases and therefore breathing becomes more difficult.
Compliance increases and therefore breathing becomes more difficult
Compliance decreases and therefore breathing becomes easier.
Compliance increases and therefore breathing becomes easier
A guiding question instead of a hypothesis is most likely used in which of the following?
A. Scientific investigation
B. Laboratory experiment
C. Laboratory test
D. Repeated trials
The diagram shows a proposed process in the history of evolution. Which 4 points process is outlined in the diagram? Mitochondrion Endoplasmic reticulum Plasma membrane Nuclear Cytoplasm envelope Nucleus DNA Engulfing of aerobic heterotrophic prokaryote Heterotrophic eukaryote Prokaryote Mitochondrion Chloroplast Photosynthetic eukaryote Engulfing of photosynthetic prokaryote O Speciation due to natural selection Endosymbiosis Formation of early organic molecules Chemosynthesis
speciation due to natural selection
endosymbiosis
formation of early organic molecules
chemosynthesis
Answer:
formation of early organic molecules
Match the component of cellular respiration with the object that closely mirrors its function.
1. Battery A.Bloodstream
2. Delivery Truck B. Glucose
3. Poison C. Mitochondria
4. Raw material D. ATP
5. Factory E. Carbon Dioxide
The battery is like ATP, Delivery Truck is like the bloodstream, poison is like carbon dioxide, raw material is like glucose and the factory is like mitochondria.
What is cellular respiration?Through the process of cellular respiration, organisms mix oxygen with food molecules, directing the chemical energy contained in these substances toward life-sustaining processes while excreting carbon dioxide and water as waste.
Foods are broken down by microorganisms that do not require oxygen in a process known as fermentation.
Adenosine triphosphate (ATP), an energy-rich compound that absorbs the chemical energy obtained from the breakup of carbohydrates and fats and releases it to fuel other cellular processes, is one goal of the degradation of foodstuffs. ATP is created when the energy contained in chemical bonds is converted from one form to another.
The mitochondria, which are highly organized rod-shaped compartments, are where the enzymes that catalyze the individual processing steps in respiration and energy conservation are found in eukaryotic cells, which are defined as any cells or organisms that obtain a clearly defined nucleus and membrane-bound organelles.
Therefore, the battery is like ATP, Delivery Truck is like the bloodstream, poison is like carbon dioxide, raw material is like glucose and the factory is like mitochondria.
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Importance of photosynthesis to humans
Answer: Green plants and trees use photosynthesis to make food from sunlight, carbon dioxide and water in the atmosphere: It is their primary source of energy. The importance of photosynthesis in our life is the oxygen it produces. Without photosynthesis there would be little to no oxygen on the planet.
Explanation:
Why is transcription both the same and different between chloroplasts and mitochondria?
Answer:
because they have similar functions
NEED HELP ASAPPPP!!!
Answer:
345
explanation:
the line on the graph is higher than 300 and close to 350 hence any answer below 300 is wrong .so the answer is 345.
the starting cell must duplicate its chromosomes in interphase before mitosis or meiosis can begin. does this change the number of chromosomes? chromatoids? both? how many of each would you expect in a human cell after interphase? (i need the second question answered plz)
wikang pambansa noon at ngayon
NEED FAST PLS!!! which option identifies the argument refuted in the following scenario?
Lucy possesses a gene for melanoma she chose has to stay out of the sun
A. genetic information is purely internal influenced
B. dominant traits are always passed from parent to child
C. genes are incapable of mutation during transference
D. it is impossible to partially inherit a genetic trait
Answer:
D. it is impossible to partially inherit a genetic trait
Explanation:
Bacteria that are resistant to more than one antibiotic are called superbugs. Compare the control and antibiotic data from the three farms and select all the true statements. A: Another superbug was created by using the same method of giving antibiotics to chickens as Monita Farms. B: Our experiment was a failure. VIC: The data for the control farm shows that not administering antibiotics helps to prevent superbug creation. D: Natural selection is not a possible cause of the superbug creation on Monita Farms. E: There was no reason to test the control solution.
A and C, I got it correct
Answer: There was no reason to test the control solution.
Explanation: Bacteria that are resistant to more than one antibiotic are called superbugs. Compare the control and antibiotic data from the three farms and select all the true statements. A: Another superbug was created by using the same method of giving antibiotics to chickens as Monita Farms. B: Our experiment was a failure. VIC: The data for the control farm shows that not administering antibiotics helps to prevent superbug creation. D: Natural selection is not a possible cause of the superbug creation on Monita Farms. E:
GIVING 20 POINTS PLEASE HELP ME ASAP!!!!!
Answer:
The Answer is gonna be D. There are fewer winds in summer to interfere with drying up puddles
The picture below shows the energy flow through a meadow community.
Hurry!!!
Which of the following would most likely occur to the populations of the community immediately after a wildfire burns the environment?
Group of answer choices
Hawks and foxes would increase
Hawks would increase and foxes would decrease
Meadow plants would increase and rabbits would decrease
Meadow plants and rabbits would decrease
1 pts
What happens in nuclear fission?
Energy is released when two atoms collide with one another.
O Energy is released when two atoms travel at the speed of light.
O Energy is released when two atoms are combined.
O Energy is released when an atom is split apart.
As the water is forming into ice on tree branches are the molecules (gaining/losing) freedom of movement?
answer: losing
as the the water begins to freeze so does the molecules
Need help asap explain how scientists can use spectra to determine substances on another planet is what it says at the bottom
You can use spectra to determine substances on another planet is what it says at the bottom. This explains how scientists can use spectra to determine.
What are the three parts of a neucleotide
Each nucleotide, in turn, is made up of a nitrogenous base, a pentose sugar, and a phosphate.
What is needed for evolution to take place?
Answer:
genetic variation
Explanation:
. The average adult (like Hank) is _________% water, ________% protein, _______% fat, _______% minerals, and _______% carbohydrates. 2. All the macromolecules that make you up come from ______________________________. 3. __________________________ reactions destroy the reactants that you give them, making big, complex substances smaller and __________________________ reactions reassemble the smaller products into new, bigger products. The processes behind these two sets of reactions make up your
Answer:
1. 62 percent water, 16 percent fat, 16 percent protein, 6 percent minerals, and less than 1 percent carbohydrate, along with very small amounts of vitamins and other miscellaneous substances.
2. Food.
3. Catabolic, Anabolic, Metabolism
Why do you need to breathe in oxygen?
a.Oxygen is needed to split glucose.
b.Oxygen provides energy that is to be put into ATP.
c.Oxygen pulls electrons through the process of cell respiration.
d.Oxygen reduces the NAD+ and FADH to produce NADH and FADH2
Answer:
a
Explanation:
Breathing in of oxygen is respiration. And respiration is the taken in of oxygen to break down glucose and energy in form of ATP as by product
AG CLASS HELP PLZ!!!!!!!
Complete the following sentence.
A turf management professional seeking advancement may choose to get certification through a
____________-_____________ program offered by a university as part of its continuing education options.
sorry no options
Answer:
the government
Explanation:
because i am reading in 7 class
Which is it MUTUALISM, PREDATION, and COMPETITION
The Canadian lynx and snowshoe hare both live in the northern forests of Canada and Alaska. The population of snowshoe hares rises and falls based on resource availability When the population of snowshoe hares falls, the Canadian lynx suffers from lack of food resources.
Answer:
Predation.
Explanation:
17. Explain how carbon reservoirs can
be accessed without the influence
of humans.
Answer:Without human interference, the carbon in fossil fuels would leak slowly into the atmosphere through volcanic activity over millions of years in the slow carbon cycle. ... About half of these emissions are removed by the fast carbon cycle each year, the rest remain in the atmosphere.
Explanation:Hope this helps you!
In the slow carbon cycle, volcanic activity would release fossil fuel carbon into the atmosphere over millions of years without human intervention. The rapid carbon cycle removes half of these emissions annually, leaving the rest in the atmosphere.
What are 4 carbon reservoirs?
These are the reservoirs or sinks that carbon moves through as it cycles through the environment. Carbon is returned to the atmosphere through a wide number of different processes, including the decomposition of organisms, the eruption of volcanoes and fires, the combustion of fossil fuels, and more.
Carbon reservoirs contain substantial quantities of carbon between processes.
Burning fossil fuels such as natural gas, coal, and oil releases CO2, which is damaging to the environment and to individuals.Therefore, the carbon stocks such as fossil fuels have been used by humanity.
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The Cell Theory also states that all living cells have chloroplasts and a cell
wall.
True or false
Answer:
False
Explanation:
Cell walls are only found in plant cells.
Hemophilia is
A. an autosomal dominant inherritated disorder
B. an autosomal recessive inherited disorder
C. an Y- linked recessive disorder
D. an X- linked recessive inherited disorder
List as many examples of seasonal changes of plants and animals that you can.
No links!!! | help please!!
Answer:
Leaves change colors
animals migrate
animals shed (winter coat vs summer coat)
flowers bud in spring
ex: snow rabbits are white in winter and brown in summer
Explanation:
What are each of these blood vessels responsible for when it comes to transporting blood in the body?
Arteries
Capillaries
Veins
Use the data you calculated in parts A and B to explain why gypsy moths could threaten biodiversity in the ecosystem.
Answer: edmentum
The number of gypsy moths is growing exponentially in a short period of time, which suggests that there are few predators controlling their population. This growth also aids the exponential destruction of shrubs and trees, which native species rely on for food and shelter. Increased competition for these resources will likely cause the population of many native species to decline. Over time, some of the native species may die out or leave the area, leading to a decline in biodiversity.
Answer:
The number of moths are growing fast in just a short period of time, this means that their poulation is being controlled by their predators. As the population of the moths continue to grow, there will be an increase in the destruction of crops and trees within the moth's environment. Over time some of the species may die out and cause them to relocate and cause a decrease in biodiversity.
Explanation:
I put this answer in my own words, so you may copy and paste it.
The caterpillar of the Gypsy Moth provokes tree damage but since it is the only stage of the life cycle that utilizes food. When the population of feeding caterpillars reaches pandemic proportions, they can completely defoliate trees.
What is a biodiversity?The term biodiversity pertains to the diversity of life on Earth at all levels, from genes to ecosystems, and can encompass the evolutionary, ecological, and cultural processes that enable life to exist.
The caterpillar of the Gypsy Moth provokes tree damage but since it is the only stage of the life cycle that utilizes food.
When the population of feeding caterpillars reaches pandemic proportions, they can completely defoliate trees.
Thus, this way gypsy moths could threaten biodiversity in the ecosystem.
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PLEASE HELP !! ILL GIVE BRAINLIEST *EXTRA 40 POINTS* DONT SKIP :(( .!
Answer:
D
Explanation:
All the other answers dont really make as much sense. So D is best answer.
:)