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ICE Princess25 [194]
3 years ago
7

Why is a DNA molecule called a double helix?

Biology
2 answers:
krok68 [10]3 years ago
5 0

Answer:

A

Explanation:

Because there are two DNA strands in the DNA molecule and they both rotate around each other in a helix formation. So two helixes = double helix.

kap26 [50]3 years ago
5 0

Answer:

A

Explanation:

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What is the thing that pumps blood to your heart?​
Alecsey [184]

Answer:

Blood vessel

Explanation:

6 0
3 years ago
Which structure of the nephron reabsorbs the most substances?
omeli [17]

Answer:

Proximal convoluted tubule

Explanation:

The major work of re-absorption is carried out in nephron by the proximal convoluted tubule (PCT). The PCT re-absorbs all the essential nutrients such as amino acid, potassium, glucose etc. and water driven by passive transfer based on concentration gradient. Along with gradient, pH of the urine also affects the re-absorption. Based on the pH of the urine (basic or acid), re-absorption of ionized acid increases or decreases.  

5 0
4 years ago
Some trolls have one eye (EE, Ee) while others have two (ee). Two heterozygous one-eyed trolls are crossed. What is the expected
Vlad1618 [11]

Answer:

75% one eye, 25% two eyes (or 3:1 one eye: two eye)

Explanation:

The cross between the two trolls are shown in the attached punnett square  

Ee x Ee gives 3 genotypes: EE, Ee, and ee

at a ratio of :1 EE: 2 Ee: 1 ee

Ee and EE are both one eye genotypes, so the <em>phenotype </em>is 3:1 one eye to two eye.

Download pdf
6 0
4 years ago
Which activity would most likely increase the mutation rate in a culture of bacteria being grown in a laboratory experiment?
Fofino [41]
The answer should be 4) as it is known that uv radiation might have an effect on dna, thus causing mutations such as skin cancer in humans.
7 0
3 years ago
Convergent plates boundaries are most often the site of
Oksana_A [137]

volcanic activity

Answer: Option D.

<u>Explanation:</u>

Volcanoes are regular along tectonic plate boundaries where oceanic plates sink underneath different plates. As a plate sinks profound into a subduction zone, it warms and starts to soften, shaping magma.

Volcanoes are likewise basic along structural limits where plates pull separated, permitting magma to ascend from the mantle.Volcanoes are generally basic in these geographically dynamic limits. The two sorts of plate boundaries that are well on the way to create volcanic movement are divergent plate boundaries and convergent plate boundaries.

6 0
4 years ago
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