BIOLOGY HIGH SCHOOL

Of the five characteristics of living things, which one is required for the species to survive but does not have to apply to an individual

Answers

Answer 1
Answer:

Answer:

reproduction

Explanation:
Answer 2
Answer:

Answer:

Reproduction

Explanation:

100% on test

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CANT GET WRONGThe human respiratory system consists of various organs that work together to accomplish the vital task of bringing oxygen into the body. One organ listed is part of a system that helps with digestion rather than respiration. The organ that is incorrectly paired with a respiratory function is the A) nose - filters and warms air B) bronchi - moves air into the lungs C) diaphragm - muscle that powers breathing D) esophagus - moves air from the nose into the lungs

How many amino acids cannot be made by the body so they must be obtained in the diet

Answers

the amount of amino acids taht cannodt be made by the body so they must be obtained in diet are : 9 amino acids Those acids are : - Histidine - Isoleucine - Leucine - Lysine - Methionine - Phenylalanine - Threonine - Tryptophane - and Vline

The standard deviation of a sample taken from population A is 17.6 for a sample of 25. The standard deviation of a sample taken from population B is 21.2 for a sample of 30. The standard deviation of the sample mean differences is _____. Round your answer to the nearest hundredth.

Answers

The standard deviation of the sample mean differences should be calculated using the standard deviations of the two populations. In order to see how they differ, we need to first subtract them from each other, so: 21.2-17.6 = 3.6 We then divide this number with the first standard deviation as follows: 3.6/21.2 and multiply this answer by 100. Therefore, the standard deviation of the sample mean is 3.6/21.2 x 100 = 16.98.

The standard deviation of the sample mean differences is 16.98.

What is population standard deviation?

It is defined to be the square root of the population variance of the vector. The sample standard deviation s is defined to the square root of the sample variance of the vector.

The standard deviation of the sample mean differences should be calculated using the standard deviations of the two populations. In order to see how they differ, we need to first subtract them from each other, so: 21.2-17.6 = 3.6 We then divide this number with the first standard deviation as follows: 3.6/21.2 and multiply this answer by 100. Therefore, the standard deviation of the sample mean is 3.6/21.2 x 100 = 16.98.

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Why energy is needed for active transport

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Active transports is actively done to remove or add something that would not normally move there in comparison to passive which occurs on its own without the need for energy

The flexible nature of a cell membrane results from its channel proteins true or false

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Cell membranes contain membrane proteins that  allows all the interaction that occurs within the cell. It makes the cell membrane selectively permeable because of its characteristics as being fluid or its fluidity which means to say that they can move freely within the lipid bilayer. The membrane proteins can also be stored in the lipid bilayer together with the enzymes. It cannot be denied that membrane proteins have a lot of functions based on its type. They can be integral proteins, peripheral proteins and lipid bound proteins. 

Answer:

true

Explanation:

i took the test

All of the energy that drives Earth's rock cycle comes from

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Ultimately, all energy is from the Sun, but the core holds the mantle which Earth stores the energy.

your best answer would be the interior and the sun

Proteins that tag pathogens for destruction by immune cells are called A. antibodies. B. antigens. C. histamines. D. interferons.

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Proteins that tag pathogens for destruction by immune cells are called (D) Interferons. Interferons are group of proteins used for signals. It is produced whenever there is a pathogen (whether a virus, bacteria, parasites or tumor cells) present in the body. It causes its neighbor cells to increase their anti-viral defense.

Answer: Antigen

The antigen are proteins in the cells of the body.Out of over 100 different antigens that have been identified, there are six that have been shown to be the most important in organ transplantation. Of these six antigens, we inherit three from each parent. It is rare to get a six-antigen match between two people, especially if they are unrelated. HLA(human leucocyte antigen) typing is done before the transplant to ensure high probability of success.

A person can make antibodies against another person’s HLA antigens.  If a recipient has strong antibodies against a donor’s HLA, the risk of rejection is high and a donor would be declined for that recipient. so the type of antigens are tested for the compatibility before a transplant to ensure high probability of success and lower the rate of rejection.

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