Answers
Most systems in the human body are negative feedback systems because negative feedback systems allow humans to regulate and stabilize their systems, which is the first option as a negative feedback system regulates the body's functioning.
What is the negative feedback system?Negative feedback is a regulatory mechanism in which a change in a physiological variable triggers a response that opposes the initial change, for example, in the regulation of body temperature, when the body becomes too hot, thermoreceptors in the skin and other tissues detect the change in temperature and send signals to the hypothalamus, which acts as the body's thermostat and as a feedback mechanism, hypothalamus triggers responses that cool the body, such as vasodilation to increase blood flow to the skin, sweating to release heat, etc.
Hence, most systems in the human body are negative feedback systems because negative feedback systems allow humans to regulate and stabilize their systems, which is the first option.
Learn more about the negative feedback system here.
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Related Questions
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Cells Unit Test 705
01:04:11
KAYLEN HAWKINS
QUESTION 17
Endocytosis relies on which two organelles to move molecules into the
cell?
Cell membrane and vesicle
Cell membrane and cell wall
Mitochondria and vesicle
4
Mitochondria and cell membrane
Answers
Answer:
Cell membrane and vesicle
Which step is a protein formed during gene expression?
a. reverse transcription
b. translation
c. dehydration synthesis
d. DNA replication
Answers
DNA always forms proteins
A chemical reaction is shown.
SnO2 + H2 → Sn + H2O
What is true about this chemical reaction?
A.
It is balanced because the mass of the reactants (number of atoms) is equal to the mass of the products (number of atoms).
B.
It is unbalanced because the mass of the reactants (number of atoms) is greater than the mass of the products (number of atoms).
C.
It is unbalanced because the mass of the reactants (number of atoms) is less than the mass of the products (number of atoms).
D.
It is balanced because the number of reactants (number of atoms) is equal to the number of products (number of atoms).
Read the information about an experiment.
Jadon plans on carrying out an experiment involving the burning of steel wool to illustrate the conservation of mass. Steel wool is made of iron. When it is burned it combines with oxygen to form iron(III) oxide.
Which step in his experiment is the most important if he wants his experiment to correctly demonstrate the conservation of mass?
A.
The steel wool should be burned inside of a sealed jar or other closed system.
B.
The steel wool should be burned over a long period of time (at least two hours).
C.
The steel wool should be burned in a room that is at room temperature (20–25°C).
D.
The steel wool should be burned in its entirety sExpected Outcomes – Metals in Hydrochloric Acid
Metal Observations
Copper No reaction even when gently heated
Iron Little initial reaction.
More vigorous reaction when heated.
Positive test for hydrogen gas.
Solution turned from colorless to yellow.
Magnesium Vigorous initial reaction; rapid evolution of gas.
Positive test for hydrogen gas.
All of the magnesium seemed to disappear.
Solution remained colorless.
Zinc Initial reaction produced rapid evolution of gas; less vigorous than magnesium.
All of the zinc seemed to disappear.
Solution remained colorless.
Students in Ms. Brown's Science Lab demonstrated several chemical reactions, by placing the each above chemicals in HCl (hydrochloric acid). Unfortunately, the data did not appear to support the Law of Conservation of Matter in any of the experiments. The recorded Mass of the Reactants did not match the Mass of the Products. Based on the expected outcomes listed in the table above, what might be a reason that their demonstrations were not successful?
A.
They only used metals
B.
They perfomed the experiment in a closed system
C.
The experiment was not performed in a closed system
D.
They didn't use enough HCl that no iron is left in its original state.
Answers
Answer:
1) A chemical reaction is shown.
SnO2 + H2 → Sn + H2O
What is true about this chemical reaction?
B.
It is unbalanced because the mass of the reactants (number of atoms) is greater than the mass of the products (number of atoms).
2) Read the information about an experiment.
Jadon plans on carrying out an experiment involving the burning of steel wool to illustrate the conservation of mass. Steel wool is made of iron. When it is burned it combines with oxygen to form iron(III) oxide.
Which step in his experiment is the most important if he wants his experiment to correctly demonstrate the conservation of mass?
A.
The steel wool should be burned inside of a sealed jar or other closed system.
Explanation:
The explanation to number 1 is that I selected it in my test and got it.
The explanation the number 2 is from the link below:
https://quizizz.com/admin/quiz/5dee60258f1145001bc02ed5/physical-science-2nd-9-weeks-practice-test-2020
The true statement about the given chemical reaction is-It is balanced because the mass of the reactants (number of atoms) is equal to the mass of the products (number of atoms). Therefore, the correct options for all the problems are 1-A, 2-A and 3-D.
What is a balanced equation?A balanced equation refers to an equation where the number of atoms of each element is the same on both sides of the equation. The given equation is balanced because the number of Sn atoms and the number of H atoms on the reactant side are equal to the number of Sn atoms and the number of H atoms on the product side.
1. The steel wool should be burned inside a sealed jar or other closed system is the most important step if he wants his experiment to correctly demonstrate the conservation of mass.
2. They didn't use enough HCl that no iron is left in its original state might be a reason that their demonstrations were not successful.
Therefore, the correct options are 1-A, 2-A and 3-D.
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Explain how an abiotic factor (stronger storms, warmer oceans, or lower ocean pH) can affect populations in a coral reef ecosystem
Answers
Answer:
Climate change leads to: A warming ocean: causes thermal stress that contributes to coral bleaching and infectious disease.
Explanation:
Sea level rise: may lead to increases in sedimentation for reefs located near land-based sources of sediment. Sedimentation runoff can lead to the smothering of coral.
Linnaeus based one of his classification categories on plants. He even named the Kingdom Plantae. Which best describes the organisms in this kingdom?
A. They are autotrophic and have eukaryotic cells
B. They are made of prokaryotic cells
C. They are multicellular and do not have cell walls
D. They are always single celled and produce their own food
Answers
Answer:
b
Explanation:
all plants are make of prokaryotic cells.
The dispersal of food coloring in a beaker of water is an example of what process?
Answers
Answer:
this is an example of the process DIFFUSION
PLSS HELP
Look at the picture and answer the question(s) that follow.
Which of these strata are MOST likely the oldest?
-J and E
-K
-A and F
-D and E
Answers
Which of the following does not provide new genetic combinations?
Answers
If Ava drops a 5 kg ball off a 20 meter building and Clayton drops a 5 kg ball
off a 40 meter building, which ball will have more potential energy?"
A.Ava's ball
B.Clayton's ball
Answers
The modern cell theory doesn't say
A all living things are multicellular
B cells are the smallest living unit in all organisms
C all cells come from other cells
D all living things are made of cells
Answers
Answer:
A
Explanation:
Modern cell theory states: cells are the basic unit of structure and function for all living things, all cells come from preexisting cells, and all living things are made from cells. It does not state that all living things are multicellular, in fact there are plenty of unicellular organisms. Therefore the answer is A.
Giving a lot of point and brainiest!!
How does cooling of magma affect crystal size?
A) Slow cooling creates small crystals
B) Fast cooling creates both large and small crystals.
C) Slow cooling creates large crystals
D) Fast cooling create large crystals
Answers
Answer:
When magma cools, crystals form because the solution is super-saturated with respect to some minerals. If the magma cools quickly, the crystals do not have much time to form, so they are very small. If the magma cools slowly, then the crystals have enough time to grow and become large.
Answer:
I learned about this, Uhm...
C is the right answer bc igneous rocks cool and form crystals.
Lava, since it comes out of a volcano, cools faster and has smaller crystals since they could not be developed enough.
Magma, still underground, cools slower than lava because of all the density and heat, which causes bigger crystals.
Hope this helps :)
The average molecular weight of proteins encoded in the human genome is about 50,000. A few proteins are very much larger than this average. For example, the protein called titin, which is made by muscle cells, has a molecular weight of 3,000,000. Estimate how long it will take a muscle cell to translate an mRNA coding for an average protein and one coding for titin. The average molecular mass of amino acids is about 110 daltons. Assume that the translation rate is two amino acids per second.
Answers
Answer:
13,636 seconds = 227.3 minutes = 3.79 hours
Explanation:
The titin protein has a molecular weight of 3,000,000 daltons, while the average molecular mass of one amino acid is 110 daltons, so it is expected that this protein is composed of 27,273 amino acids (3,000,000 daltons/110 daltons = 27,272.72). Moreover, and since the translation rate is two amino acids per sec, it is expected that the protein will be synthesized in approximately 3.79 hours (27,272.72/2 = 13,636 seconds = 227.3 minutes = 3.79 hours).
how does biodiversity help with farming
Answers
Answer:
biodiversity is the basis of agriculture and our food systems. agricultural biodiversity also performs ecosystem services such as soil and water conservation, maintenance of soil fertility, conservation of biota and pollination of plants, all of which are essential for food production and for human survival.
good luck :)
hopefully, this helps
have a great day !!
What unit of time on Earth is based on the revolution of the Moon around the Earth?
A. day
B. year
C. hour
D. month
Answers
Answer: I think it’s months
Because I found this information... The Moon appears to move completely around the celestial sphere once in about 27.3 days as observed from the Earth. This is called a sidereal month
What sphere refers to water and ice?
a. atmosphere
b. hydrosphere
c. lithosphere
d. biosphere
Earth's outermost sphere is called the
a. biosphere.
b. atmosphere.
c. lithosphere.
d. hydrosphere.
What part of Earth contains rocks?
a. Biosphere
b. Hydrosphere
c. Atmosphere
d. Lithosphere
What of Earth's spheres is composed of a mixture of gases?
a. mesosphere
b. hydrosphere
c. atmosphere
d. biosphere
What is Earth's hydrosphere?
a. the gases in the air
b. the solid, rocky part of Earth
c. all of the water on the planet
d. the study of Earth's atmosphere
Answers
2)B
3)D
4)C
5)C
Can anyone solve this
Answers
Which nucleic acid serves as a strand for protein synthesis?
a. tRNA
b. ribosome
c.mRNA
d.dATP
Answers
Answer:
c.mRNA...............
How are the smallest ocean waves produced?
Answers
Answer:
Ocean waves are usually formed by a distant wind. ... The area which the wind affects the surface is called the fetch. The larger the fetch, the greater the waves produced. the small waves generated by storm winds are often confused and disorganized.
Explanation:
Answer:
For a wave to effectively be produced there need to be large wind, long period of time and a large distance of water. If they are all reduced, then there would be a reduction in the intensity of the wave.
Explanation:
3 This is the menstrual phase wherein pregnancy is possible.
c) menstrual phase
d) ovulation phase
a) Tollicular phase
b) luteal phase
wires a woman for pregnancy.
Answers
Answer:
ovulation phase
Explanation:
The ovulation phase is the only time during your menstrual cycle when you can get pregnant. You can tell that you're ovulating by symptoms like these: a slight rise in basal body temperature
d) ovulation phase
Its called ovulation due to the egg leaving to ovary to then be fertilized by a sperm. Although it is possible for a woman to get pregnant during anytime in her cycle. I hope this helped a bit.
Why are renewable sources of energy better than nonrenewable sources? A. Because they release carbon dioxide B. Because they can be used again C. Because they contain more energy D. Because they are less expensive
Answers
Answer:C
Explanation:because it needs carbon dioxide and it can be used again
Break question
what pets would you want
(p.s. could you please answer one of my questions)
Answers
amount of force times the distance it moves an object
Answers
Answer:
Work
Explanation:
Work=Force*Distance
Note: this is physics, not biology
HELP URGENT!!!!!!!!!!!
Answers
Answer:
dominant trait
Explanation:
Recessive alleles can only show up when there is no dominant allele present to suppress them.
Answer: Dominant traits
Explanation:
Recessive traits only show up when there are no dominant alleles
Extraterrestrial traits are not a thing
Which is an adaptation that helps birds maintain a stable body temperature?
air sacs connected to lungs
large chest muscles
down feathers
nearly hollow bones
Answers
down feathers
Answer:
the answer is down feathers. Or C
Explanation:
I just took the unit review test
Why can grasses not survive on the island yet?
Answers
How does a food chain differ from a food web?
A. A food chain identifies the consumers and producers, while a food web lists all of the animals in an ecosystem
B. A food web shows what to eat, while a food chain shows how the eating patterns are connected.
C. A food chain shows an eating pattern, while a food web shows how the various eating patterns are connected.
D. a food chain shows how eating patterns are connected among organisms, while a food web shows the eating patterns among organisms
Answers
Food chains are pretty simple while a food web is very complex
Answer:
C
Explanation:
A food chain shows an eating pattern, while a food web shows how the various eating patterns are connected.
In recent years the elephant population in certain African ecosystems have seen a decreased. The decrease is most likely due tl
Answers
Answer:
mostly poaching
Explanation:
i dont know if this was the answer you wanted but...
nvm I had my head on the wrong question
see attached...thank you
Answers
fertilization of an egg to form a zygote takes place in?
A.urethra
B.uterus
C.cervix
D.fallopain tube
Answers
A person with a bacterial infection begins to feel hot and feverish. This response MOST likely helps the body fight infection by —
Answers
Answer:
making it hard for bacteria to leave the body
Explanation: