Biology High School

why erector muscles contract in regularing body temperature at cold temperature ?​

Why Erector Muscles Contract In Regularing Body Temperature At Cold Temperature ?

Answers

Answer 1

Answer:

Erector muscles contract in regularing body temperature at cold temperature because  causing body hairs to stand on end.

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Related Questions

Which of the statements below correctly compares features of plant and animal cells?

Plant cells have a cell membrane, while animal cells have both a cell wall and a cell membrane.
Plant cells have ribosomes only on the rough ER, while animal cells have ribosomes in the cytoplasm.
Plant cells have a large central vacuole, while animal cells have many smaller vacuoles.
Plant cells have chloroplasts but no mitochondria, while animal cells have mitochondria.

Answers

Plants cells have a large central vacuole, while animals cells have many smaller vacuoles

Plant cells have a large central vacuole, while animal cells have many smaller vacuoles. Hence option c is correct.

What are vacuole?

Vacuole is defined as a region of cytoplasm-free, membrane-lined, and liquid-filled space inside a cell. A membrane-bound cell organelle known as a vacuole.  The plant cell's equilibrium depends heavily on the vacuole. It participates in the regulation of cytoplasmic ions, pH, and the control of cell volume and turgor.

Animal cells lack a cell wall, whereas plant cells do. Animal cells lack chloroplasts while those of plants do. Animal cells have many little vacuoles, but plant cells only have one giant vacuole. Animal cells only have a cell membrane, but plant cells have both a cell wall and a cell membrane. Cell walls are used by plants to give the plant structure. Animal cells lack the organelles known as chloroplasts that are present in plant cells.

Thus, plant cells have a large central vacuole, while animal cells have many smaller vacuoles. Hence option c is correct.

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what are 3 characteristics that adenoviruses, tv virus, and papilloma viruses have in common

Answers

Answer:

The three characteristics that adenoviruses, T7 viruses and papillomaviruses have in common include the following:

1. The three types of viruses possess icosahedral structures.

2. The viruses possess DNA.

3. Their DNA is double stranded.  

Adenoviruses are naked (non enveloped) icosahedral nucleocapsid viruses, which has double stranded DNA genome. They are specific to vertebrate hosts and cause different types of diseases. T7 virus is a bacteriophage that infect bacterial cells. Most strain of E.coli are susceptible to this virus. Humanpapilloma viruses are small,naked icosahedral viruses which infect higher vertebrates.

In which of these forms does acid precipitation reach the surfaces of Earth?

Answers

The answer is precipitation. Without precipitation, the form of rain, hail or snow would not be able to reach the Earth’s surface. With precipitation, it would make it easier for the acid to enter the atmosphere.

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Answers

Answer:

Retina: membrane at the back of the eye that changes light into nerve signals.

lens focuses light rays onto the retina

pls hurry ty smmmmmm

Answers

So is there a paragraph or some story
So please make it clear

which part of a flower has pollen grain?​

Answers

Anther is the correct answer!

What is Big Bang theory

Answers

Answer:

The Big Bang theory is a theory on how the universe came into existence.  The idea is that the universe started from no immaterial things but from a one point, (Basically they are saying the universe started from nothing).  

There has been experiments done saying that it will keep growing larger and larger day by day.

Answer:

The Big Bang theory is what we supposed how our universe began. When it exploded, things started to form like, stars, planets, debris, and floating rocky things in space that we know today, as asteroids.

Pepsin and Trypsin are enzymes. At what pH do they have the highest rate of reaction?

Answers

Answer:

It has an optimum pH of about 1.5. Trypsin's optimum pH is about 8.

Explanation:

This active trypsin acts with the other two principal digestive proteinases — pepsin and chymotrypsin — to break down dietary protein into peptides and amino acids. These amino acids are essential for muscle growth, hormone production and other important bodily functions.

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three examples of ways in which biology can help inform everyday decisions

Answers

Knowledge of biology can inform decisions about diet, using sunscreen, and exercise.

Which of the following is not a functional group that can bond with carbon?
а
carbonyl
b
hydroxyl
C
sodium
d
phosphate

Answers

Sodium is not a functional group that can bond with carbon (Option C)

A functional group is a combination of atoms in a molecule that is capable of conferring particular chemical and physical properties.

The most common functional groups include the carboxylic acids groups (CO2H),  carbonyl groups (C=O), alcohol groups (-OH), ester groups (CO2R), and amine groups (NH2).

Functional groups are observed along the carbon backbone of the biomolecules.

This carbon backbone is made up of chains/rings of carbon atoms with the occasional substitution of an element (e.g., N or O).

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How do bacteria and archea reproduce most of the time?

A. asexually
B. sexually
C. chemical combustion
D. all 3 equally ​

Answers

Most of the time bacteria and archea reproduce by asexually .

Answer:

Most bacteria and archea reproduce asexually.

Explanation:

how do fish obtain oxygen?
a.
from water flowing over their gills.
b.
from water flowing over their fins.
c.
from water flowing over their lungs.
d.
none of the above.

Answers

Fish take water into their mouth, passing the gills just behind its head on each side.

why Should A Potometer be Allowed to stand before starting the Experiment​

Answers

It is crucial to avoid air bubbles in the assembled potometer. The plant stem must be cut under water to prevent airlocks forming in the xylem. All fittings must be tight so that the only way the apparatus can lose water is by the plant transpiring.

It is crucial to avoid air bubbles in the assembled potometer. The plant stem must be cut underwater to prevent airlocks forming in the xylem. All fittings must be tight so that the only way the apparatus can lose water is by the plant transpiring.

What is potmeter?

An instrument used for measuring rate of Transpiration occurring from lower surface of leaf.

Thus, All fittings must be tight so that the only way the apparatus can lose water is by the plant transpiring.

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Which best describes the sex chromosomes in humans?
• A. Males have two different chromosomes.
• B. X Females have one X and one Y chromosome.
• C. Males have two X chromosomes.
• D. Males have two Y chromosomes.

Answers

A. Males have two different chromosomes

what method did jesus use to lead the rabbis to a clearer understanding of God's plan? ​

Answers

Jesus used the parables to lead the rabbis to a clearer understanding of God's plan.

In christian religion, Jesus used a method of teaching called parables to expatiate a most topics he handled. This was for the better understanding of God's plans.

The parables are defined as the short stories that demonstrates a moral lesson.

A typical example of a parable used by Jesus is the parable of the lost coin.

Here Jesus told a story of a woman that had ten coins and lost one of them. He said that the woman searched carefully until she finds it. she went ahead to call her neighbors to rejoice with her as she has found the lost coin.

In this parable, Jesus passed a clearer understanding of God's plan for a repented sinner. HE said that there is rejoicing in the presence of God over one sinner who repents.

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12. Cows digest proteins into smaller molecules called peptides through the use of an enzyme called pepsin.
Aqueous solutions taken from the contents of a cow's stomach are found to have many more hydrogen ions
(H+) than hydroxide ions (OH-). A veterinarian is attempting to conduct an experiment that mimics protein
digestion and has the following four test tubes set up. Which would you expect to have the greatest
concentration of peptides?
(A) Test tube 1: protein and pepsin in water at pH 1.4
(B) Test tube 2: protein and pepsin in water at pH 8.2
(C) Test tube 3: protein in water at pH 7.6
(D) Test tube 4: pepsin in water at pH 1.7

Answers

The correct answer would be answer choice A!!!! The reasoning for this is that free H+ ions in a solution DECREASE the pH or in other words make the solution more acidic. So because of that we know that our solution must have a lower pH so we know the correct answer is either A or D because these are acidic solutions. In order for pepsin to catalyze the reaction there must be protein present and because of this we can eliminate answer choice D. So answer choice A is correct.

What are the four pillars the hold the foundation of Biology?

Answers

Answer:

homeostasis

reproduction

genecits

evolution.

5 example of balanced and 5 example of unbalanced​

Answers

Answer:

I think you asked for balanced and unbalanced chemical equations. your answer is in the attachment !

I'm not sure if you're talking about forces or not, but ill answer anyways.

Balanced Forces:

A person standing/sitting stillAn object floating in the waterPicture frames on a wallA jacket hanging on a coat rackA tug of war game where neither side is winning

Unbalanced Forces:

A car acceleratingAn object sinking in waterAn object getting knocked over by the windA fruit dropping from a treeRiding a skateboard

i need help asap....

what process would allow plant cells to take water into their cells for use in photosynthesis ?

a. Osmosis
b. Diffusion
c. Active Transport
d. Exocytosis​

Answers

Answer:

B osmosis

Explanation:

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Answer:

a. Osmosis

Explanation:

Osmosis is the net movement of solvent molecules ,usually water from region of lower solvent concentration to a region of higher solvent concentration through a partially permeable membrane.

Complete the sentence using one of the following
words:
toxins, waste or food.
Working together, organ systems eliminate bodily
and provide required substances to all cells in the body.

Answers

Answer:

food

Explanation:

food is a required substance that works together with the body to keep you alive :)

Is milk production a quantitative trait? explain your answer​

Answers

Answer: Yes, the milk produced is measured in number form thus making it quantitative.

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Select the correct images
Select the two locations that are best suited for the development of a wind farm.

Answers

Third one

Explanation:

Which is located at Left down..

What season comes before spring

Answers

Answer:

Winter season comes before spring

Which answer below is in correct order from smallest (-) to largest (+)

Answers

Answer:

the 2nd answer

Explanation:

Environmentalists claim that climate change could lead to major biological change on Earth. Which of the following statements supports the biological predictions related to climate change?
A) Sea levels will fall, causing migration of 50% of the world's human population.
B) Carbon dioxide levels and temperature changes are direct related in the studies.
C) Studies show that atmospheric carbon dioxide has increased over the past 150 years.
D) The distribution of many organisms has already shifted as a result of warming.

Answers

Answer: D: The distribution of many organisms has already shifted as a result of warming.

Explanation: I just took the quiz on FLVS

The statement that supports the biological predictions as it relates to change in climate is : ( D ) The distribution of many organisms has already shifted as a result of warming

What is climate change ?

Climate change is the long term change in the Average weather conditions of a region, province or territory. Climate change is associated to global warming caused by the activities of man which affects the weather conditions of a given region in the long term.  

As the climate continues to change, many organisms begin to redistribute themselves to regions with favourable weather conditions, and this is the biological prediction/effect of climate change on the environment.

Hence we can conclude that The distribution of many organisms has already shifted as a result of warming  is the correct statement.

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how does a number of injuries per cat relates a number of stories a cat falls

Answers

They all have the same number of injuries

Need some help figuring out what these are ASAP. Information is in the screenshots.

Answers

Answer:

it's SARS COV 2 the one in 2019

jelaskan bagaimana cara kerja pengawet dalam mengawetkan makanan.

Answers

i really like the gibberish

If the activation energy required for a chemical reaction were reduced, what would happen to the rate of the reaction?
The rate would increase.
The rate would decrease.
The rate would remain the same.
The rate would be zero

Answers

Answer:

The rate would increase.

what is photosynthesis ?? ​

Answers

Answer:

the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.

Answer:

The process of making food by plants through the help of sunlight is called photosynthesis

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