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Greeley [361]
2 years ago
7

Which diagram A or B represents the plant cell​

Biology
1 answer:
Salsk061 [2.6K]2 years ago
5 0

Answer:

the answer is a

Explanation:

i pretty sure

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Which cell organelle is the site for photosynthesis? A. chloroplast B. endoplasmic reticulum C. Golgi apparatus D. lysosome
olganol [36]

Answer: Chloroplast

Explanation:

Plants use photosynthesis to make energy for themselves and this process is located in the chloroplast. If you can't remember this, you might remember the name chlorophyll which is the food a plant makes. The prefix is similar as you can see.

8 0
3 years ago
In the female, the development of the "egg" halts during TWO stages, _________ and __________
earnstyle [38]

Answer: The blanks can be correctly filled up with prophase I and metaphase II.

Explanation:

In females, finite number of oocytes are present since birth. The process of oogenesis initiate in embryonic stage only. However, oogonia divide and mature to form primary oocytes. These primary oocytes start meiotic division but arrest in prophase I stage before birth.

After a girl attains puberty, one primary oocyte resumes its division each month during a menstrual cycle. The primary oocyte divides to form secondary oocyte and polar body.

Polar bodies degenerate after completing meiosis II. However, secondary oocyte halts its division again at metaphase II until fertilization takes place. Once fertilization takes place it completes its meiosis II and results into mature ovum and polar body.

7 0
2 years ago
Which of the following is a limited resource?
stellarik [79]
I'm pretty sure that it's natural gas.
6 0
3 years ago
Read 2 more answers
Which scientific discipline is correctly matched to a contribution to society? biology; theory of relativity geology; theory of
ExtremeBDS [4]

Answer:

B) geology; theory of continental drift

Explanation:

6 0
3 years ago
Generally speaking, which of the following mutations would most severely affect the protein coded for by a gene?a) a base substi
Pavlova-9 [17]

Answer:

Answer is C.

Explanation:

For A and B, a base substitution affects one of the three bases that comprise a codon, the DNA/RNA unit that corresponds to a particular amino acid. If one base is substituted, one codon and therefore one amino acid will be affected. Codons have built-in redundancy, so even by changing one base, the new codon sometimes still corresponds to the same amino acid. Therefore, a base substitution at most affects one amino acid, and sometimes doesn't affect it all.

Frameshift mutations cause a lot more trouble. These occur when you have a deletion or insertion that changes the number of bases in your gene. As a result, the "frame" of the codons changes (everything shifts one way or the other by the number of bases added/removed). This affects EVERY codon downstream of the mutation, so you can imagine that such a mutation would have a bigger effect the closer to the start of the gene it occurs. This is why C is correct.

3 0
3 years ago
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