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aleksklad [387]
3 years ago
11

What are the three main statements to cell theory

Biology
1 answer:
Dennis_Churaev [7]3 years ago
6 0
All living beings are made up of cells. Cell is the most basic unit of life. All cells must come from pre-exciting cells.
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The function of trna during protein synthesis is to
Lunna [17]
To deliver amino acids to their proper site during protein synthesis.
8 0
3 years ago
Chargaff's Rule. If there is 20% Adenine in the cell, what is the percentage of Thymine, Guanine, and Cytosine found in the same
Ulleksa [173]

Answer:

A= 20%

G= 30%

T= 20%

C= 30%

Explanation:

Recall that the sum of all nitrogenous bases in the DNA nucleotide is equal to 100%. And specific base pairings of Adenine to Thymine (A=T), and Cytosine to Guanine (C=G) must be equal.

So, the percentage of Adenine equal thymine, and that of cytosine equals guanine.

Now, A + T + C + G = 100%

So, if Adenine makes up 20% of the DNA nucleotides, Thymine is also 20%.

Then, 20% + 20% + C + G = 100%

40% + C + G = 100%

C + G = 100% - 40% = 60%

So, divide 60% by 2 to obtain the individual percentage of cytosine and guanine. Each will take 30%

Finally, A= 20%; G= 30%; T= 20%; C= 30%

8 0
3 years ago
Read 2 more answers
1. Describe the plasma membrane, and explain why it is called a bilayer structure.
irina [24]

Answer:

Plasma Membrane is like all other cellular membranes, the plasma membrane consists of both lipids and proteins. The lipid bilayer (or phospholipid bilayer) is a thin polar membrane made of two layers of lipid molecules

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Which layer of the alimentary canal is composed of simple squamous epithelium and areolar connective tissue?
kicyunya [14]

Answer:

The serosa is the outermost layer of the intraperitoneal organs (it's also considered the visceral peritoneum). In most alimentary canal organs, its made up of areolar connective tissue covered with mesothelium, a single layer of squamous epithelial cells

Explanation:

Hope this helps

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3 years ago
What if humans could make their food and energy from photosynthesis like plants
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Then we would be producers instead of consumers
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