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olchik [2.2K]
2 years ago
15

What is the force of attraction that objects have due to their mass?

Biology
1 answer:
erik [133]2 years ago
4 0
The answer is: Gravity
Attraction to the earth, if there was none we would be floating
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Which molecules of the adaptive defense system provide humoral immunity by circulating freely in the blood and lymph, where they
alisha [4.7K]

Answer:

Adaptive immune defense system consists of lymphocytes like B-lymphocytes and T- lymphocytes. B-lymphocytes provides humoral immunity while T- lymphocytes provide cell-mediated immunity to the body.

99% of lymphocytes circulate freely in the blood and lymph. B lymphocytes differentiate into plasma B cells and B memory cells when interact with antigen presented by T helper cells.  

Then plasma cells secrete antibodies in the circulation which binds to extracellular antigens through antigen-binding site. Then the bounded antigen is recognized by receptors present on phagocytic cells. This receptor binds the Fc region of antigen bounded antibody and destroy the antigen by phagocytosis.

5 0
2 years ago
What name is given to elements with the same number protons but differering numbers of neutrons?
Natali5045456 [20]
~Hello there!

Your question: What name is given to elements with the same number protons but differing  numbers of neutrons?

Your answer: Istopes is the name given to the elements with the same number of protons but differing number and neutrons.

Any queries ^?

Happy Studying!
7 0
3 years ago
James is riding a bike down a hill. As he gets to the bottom, he applies the brakes to stop the
Gennadij [26K]

Answer:

The answer is D.

Explanation:

The friction of the brake rubbing the rim of the front tire causes the bike to slow down and stop.

8 0
3 years ago
Assume that short hair (L) is dominant to long hair (l) and black hair (B) is dominant to brown (b). If you find a black, short-
valentina_108 [34]

Answer:

You can determine its genotype by crossing it to an animal with a recessive genotype, llbb.

Explanation:

A test cross is performed when there is an individual with an unknown genotype and we desire to know if it is a heterozygote individual or a dominant homozygote individual.

The cross occurs between the individual of unkown genotype and a recessive homozygote individual.

         

6 0
3 years ago
An unsaturated fat has the maximum number of hydrogens attached to the carbon backbone.
xz_007 [3.2K]

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The answer is true.. it is attached to the carbon backbone.

4 0
2 years ago
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