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DIA [1.3K]
3 years ago
9

In which blood vessels does the exchange of gases take place?

Biology
1 answer:
Vlad1618 [11]3 years ago
6 0

Answer: CAPILLARIES

Explanation: Gas exchange is the delivery of oxygen from the lungs to the blood stream, and the elimination of carbon dioxide from the blood stream to the lungs. It occurs in the lungs between the alveoli and a network of tiny blood vessel is called capillaries, which are located in the walls of the alveoli.

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A train car is to a train, as a _____________________ is to a polymer as a molecule is to a __________________________.
insens350 [35]

Answer:

The correct answer is - Polymer (macromolecules), monomer (building blocks

Explanation:

Polymers are comparable to the train as polymers are made up of several monomers linked together to carry more but can be removed from the polymer if required similarly the train cars that are comparable to the monomers or building block are joined together but can be taken off.

Macromolecules are polymers that are made up of joining monomers together and makes large molecules. Macromolecules like carbohydrates are made up of monosaccharides as monomers, proteins are made up of amino acids as monomer or building block, lipids are made up of fatty acids and nucleic acid are made up of nucleotides.

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3 years ago
How are the changes in atmospheric carbon dioxide described? A. Carbon dioxide levels have increased B.carbon dioxide levels can
drek231 [11]
<span>A. Carbon dioxide levels have increased 

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3 years ago
What is significant about organisms that share the same number of chromosomes?
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Answer:

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6 0
3 years ago
A woman who is colorblind (XcXc) can expect - Select one: a. 100% of her female offspring to be colorblind b. 100% of her male o
8_murik_8 [283]

Assuming she reproduces with someone who doesn't have the color blind gene:

XcXc * XCY

There are 4 combinations

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As both of the males have the Xc gene, she can expect 100% of her male offspring to be colorblind.

5 0
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In this metabolic process, the enzyme RNA polymerase binds RNA nucleotides (the substrates) together by catalyzing the formation
stira [4]

Answer:

TRANSCRIPTION

Explanation:

Transcription is the first process that occurs in the expression of a gene. It involves the synthesis of a mRNA molecule from a DNA template. The DNA molecule, which is located in the nucleus of an eukaryotic cell, is bound to by an enzyme called RNA polymerase in order to synthesize an mRNA molecule/strand.

RNA polymerase synthesizes a mRNA molecule using complementary base pairing rule i.e. Uracil base (U) is synthesized when Adenine (A) is read, Adenine when Thymine (T) is read, Guanine (G) when cytosine (C) is read, Cytosine when guanine is read. These nucleotide bases are then joined together via chemical bonding.

In a nutshell, RNA polymerase catalyzes the formation of a bond between the backbone sugar of one nucleotide base to the backbone phosphate of another nucleotide base in the metabolic process of TRANSCRIPTION.

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3 years ago
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