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ExtremeBDS [4]
3 years ago
6

What is the cell nucleus?

Biology
1 answer:
Novay_Z [31]3 years ago
5 0
The nucleus is located in the middle of a cell. It holds dna.
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The rhythmic, wavelike motion produced by smooth muscles in tubular visceral organs is called _______.
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Answer:

Peristalsis

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A scientist was studying how a specific virus infects skin cells. In a lab, the scientist exposed a group of skin cells to the v
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The answer is C.
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Which term refers to the ability of a species or organism to survive and reproduce?
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the term was coined by the Charles Darwin in which he specifies two reasons for an organism to survive and reproduce

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the term is fitness

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2 years ago
Question 12 of 20 :
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A; Carbon’s atomic number is 6, atomic number indicates the amount of protons in an atom. The number of protons (positively charged particles) is equal to the number of electrons (negatively charged particles). Because atoms have a neutral charge. The average atomic mass of carbon is 12.011; this is the amount of protons plus the amount of neutrons because electrons are so small they weigh almost nothing compared to protons and neutrons. To find the number of neutrons you subtract the number of protons from the average atomic mass. 12.011-6=6.011 (which can just be rounded to 6). So a carbon atom has 6 neutrons. Answer A is correct because it correctly states that an atom of carbon has 6 protons 6 neutrons and 6 electrons
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