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kakasveta [241]
3 years ago
12

4. How does DNA store information?

Biology
1 answer:
Mademuasel [1]3 years ago
4 0

Answer:

DNA stores biological information in sequences of four bases of nucleic acid

Explanation:

DNA stores biological information in sequences of four bases of nucleic acid — adenie (A), thymine (T), cytosine (C) and guanine (G) — which are strung along ribbons of sugar- phosphate molecules in the shape of a double helix. ... Taken as a whole, this package of DNA serves as its owner's complete genetic blueprint.

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How has CO2 changed over the last 200 years??
ExtremeBDS [4]

Answer:

It has increased

Explanation:

The concentration of carbon dioxide in the atmosphere has increased in the last 200 years. The extra carbon dioxide is causing an enhanced greenhouse effect greater than would happen naturally.

5 0
3 years ago
What must happen for scientific theories to be accepted as valid? (5 points)
natka813 [3]

Answer:

scientific theories must be tested by more than one individual multiply times for it to become scientific law

7 0
3 years ago
Bacteria grow in a culture at a rate proportional to the amount present. Initially, 300 strands of the bacteria are in the cultu
OLEGan [10]

Answer:

(a) number of strands (n) = time (t) ÷ proportionality constant (k)

(b) The time needed for the bacterial to double its initial size is 3.36 hours.

Explanation:

(a) Let the rate (time) be represented by t and the amount (number) of strands of bacteria be represented by n

t is proportional to n, therefore, t = kn (k is the proportionality constant)

Since t = kn, then, n = t/k

(b) Initial amount of strands = 300

Amount of strands after 2 hours = 300 + (300 × 20/100) = 300 + 60 = 360

k = t/n = 2/360 = 0.0056 hour/strand

Double of the initial size is 600 (300×2 = 600)

Time (t) needed for the bacterial to double its initial size = kn = 0.0056×600 = 3.36 hours

8 0
3 years ago
What is photosynthesis? <br><br> Please give me verified answer.
navik [9.2K]

Answer: The process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.

Explanation:

7 0
3 years ago
Read 2 more answers
A section of elodea leaf is stained and examined under a microscope. The total number of cells in each stage of the cell cycle i
Alex Ar [27]

Answer:

(Cells in metaphase/total number of cells) x 24 hours = hours in metaphase

Explanation:

You need to find the proportion of the cells in metaphase to the total number of cells, and multiplying by 24 hours will then give you the number of hours spent in metaphase.

For a more concrete example:

11 metaphase/200 total = .055

.055 x 24 hours = 1.32 hours in metaphase

3 0
2 years ago
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