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GuDViN [60]
3 years ago
13

What does a controlled experiment work with?

Biology
1 answer:
GREYUIT [131]3 years ago
5 0

a variable is the right answer

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artcher [175]
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many prople try to eliminate fat from their diets. which is one reasom it is necessary for humans to eat fat​
Ira Lisetskai [31]

Explanation:

Fats are very important classes of food needed by the body. Excess fat is not good for the body.

The following are the reasons fats are essential for the body;

  • They provide energy for the body too.
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  • They help the body absorb vitamins because some vitamins are only soluble in fats.
  • They help in growing of the cell.

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3 years ago
What evidence has allowed scientists to conclude that the common ancestor of modern chimps and humans lived around 7 million yea
tatyana61 [14]

Biological molecules such as proteins and DNA reveal differences between humans and chimps that would have taken around 7 million years to accumulate.

<h3>What is DNA?</h3>

All known animals and viruses have genetic information in the form of deoxyribonucleic acid, a polymer consisting of two polynucleotide chains that coil around one another to form a double helix. Ribonucleic acid is a type of nucleic acid, as is DNA.

The two DNA strands are known as polynucleotides because they are constructed from simpler monomeric units called nucleotides.

The four nucleobases that contain nitrogen—cytosine (C), guanine (G), adenine (A), or thymine (T)—along with deoxyribose and a phosphate group—make up each nucleotide. The sugar of one nucleotide and the phosphate of the following make covalent bonds, creating what is known as the phospho-diester linkage, which results in an alternating sugar-phosphate backbone.

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8 0
1 year ago
Jack is seeing an onion cell under a microscope. He observes formation of a cell plate. He is observing which phase of the cell
scZoUnD [109]
The formation of the cell plate (or phragmoplast) is similar to the formation of a cleavage furrow in animal cells, which separates two cells during mitosis and meiosis. Therefore, this occurs during cytokinesis
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What rule is used to join the free nucleotides to the exposed bases of the dna
Rashid [163]
<span>Complementary base-pair rule.</span>
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