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BabaBlast [244]
3 years ago
15

Why do tree's cells need to make more DNA?

Biology
1 answer:
igomit [66]3 years ago
6 0

<em>It’s one of the big mysteries of cell biology. Why do mitochondria—the oval-shaped structures that power our cells—have their own DNA, and why have they kept it when the cell itself has plenty of its own genetic material? A new study may have found an answer.</em>

<em>It’s one of the big mysteries of cell biology. Why do mitochondria—the oval-shaped structures that power our cells—have their own DNA, and why have they kept it when the cell itself has plenty of its own genetic material? A new study may have found an answer.Scientists think that mitochondria were once independent single-celled organisms until, more than a billion years ago, they were swallowed by larger cells. Instead of being digested, they settled down and developed a mutually beneficial relationship developed </em>

<em>It’s one of the big mysteries of cell biology. Why do mitochondria—the oval-shaped structures that power our cells—have their own DNA, and why have they kept it when the cell itself has plenty of its own genetic material? A new study may have found an answer.Scientists think that mitochondria were once independent single-celled organisms until, more than a billion years ago, they were swallowed by larger cells. Instead of being digested, they settled down and developed a mutually beneficial relationship developed </em>

<em>I</em>

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In which part of the chloroplast is there a high concentration of protons?
Gwar [14]
Answer:

in the lumen of the thylakoid
4 0
3 years ago
The shells of a certain species of marine snail are highly variable, with some snail shells being solid colors and others being
raketka [301]
Clearly, there is a variation in these marine snails so 'No variation' is definitely not an answer. Artificial variation is when humans interfere with their genetic engineering that modifies the DNA of the organism. Assuming that this is natural, then this is not the answer. 

Environmental and genetic variation can be easily confused with. Genetic variation is more on the genotype, the composition of the genes that form the physical traits. While environmental variation is more on the phenotype, or the trait that you see and observe. However, there can be genes that are inherited, but due to the influence in environment, they don't show up. So, assuming that these colors are consistent from birth, then the answer would be genetic variation.
6 0
4 years ago
Taking only vitamin D into consideration, what would happen to the reproductive success of:
icang [17]

Answer:

The reproductive success of these people would be:

A) lower.

B) higher.

C) higher.

D) lower.

Explanation:

Vitamin D is a type of secosteroid and its synthesis in the epidermis is dependent on sun exposure (UVB radiation). This vitamin is key to have normal growth and to properly absorb calcium, magnesium, and phosphate.

Melanin, on the other end, is a natural pigment also found on skin that is responsible for our skin color and protects our bodies from UVB radiation damage. On people with darker skin tones, the higher levels of melanin hinder Vitamin D synthesis since it acts as a natural protector against the sun.

For this reason, light-skinned people (low melanin levels, high vitamin D synthesis) live better in the poles, where they can absorb limited UV because of the weaker sunlight. Dark-skinned people are better off living in regions with the stronger sunlight, like the tropics.

8 0
3 years ago
One cat carries heterozygous, long-haired traits (Ss), and its mate carries homozygous short-haired traits (ss). Use a Punnett s
Korvikt [17]

Answer:

50% of the offspring will have long hair

Explanation:

4 0
4 years ago
Do eels breed randomly
Arlecino [84]
Most eels breed at depths unattainable to modern diving equipment, which is why no-one has ever seen the eel mate with other eels.

This is the best answer I can do.
7 0
4 years ago
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