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NeTakaya
2 years ago
7

DNA is a polymer consisting of monomers know as

Biology
1 answer:
bezimeni [28]2 years ago
7 0
The answer is C. Nucleotide

DNA is a polymer. The monomer units of DNA are nucleotides, and the polymer is known as a "polynucleotide." Each nucleotide consists of a 5-carbon sugar (deoxyribose), a nitrogen containing base attached to the sugar, and a phosphate group.
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Please help
KATRIN_1 [288]

Answer:

Step 1: Pollination

In general, male gametes are contained in pollen, which is carried by wind, water, or wildlife (both insects and animals) to reach female gametes. The pollen is deposited on a plant's stigma, which is part of the pistil (the elongated part of a flower extending from the ovary). This process is called pollination.

Step 2: Germination

Within a few minutes, pollen tubes begin growing, or germinating, toward the egg cell. These tubes will provide a path for the sperm carried in the pollen to reach the egg.

Step 3: Penetration of the Ovule

The pollen tubes penetrate the ovule, which contains the female gametes.

Step 4: Fertilization

Sperm travel down the pollen tubes and fertilize an egg. Most angiosperms undergo double fertilization, where both an egg and the polar nuclei in the embryonic sac are fertilized.

Explanation:

^^^^^^^^

8 0
2 years ago
Which of these is a piece of evidence supporting the theory of evolution?
nikklg [1K]

Answer:

The correct answer is option A.

Explanation:

Emus are flightless birds that are native to the African part of the geological location. It is the second largest bird on the planet that can not fly but run very fast.

They show similarities with their Australian cousin ostriches. Ostriches are found in Australia, these are the largest bird on the planet. These are also flightless birds and run up to 45 MPH.  

Thus, the correct answer is option A.

7 0
2 years ago
Read 2 more answers
Most animals with backbones, vertebrates, have a similar body plan: skull, ribs, two pairs of limbs, tail. What does this sugges
daser333 [38]

The correct answer is E. Vertebrates are all related to a common ancestor

Explanation:

According to biology and evolution, organisms from different species but that share similarities in morphology (body structures) as well as in genetics often have a phylogenetic relationship which means they descend from the same organism or share a common ancestor. This applies to multiple taxonomical levels including classes such as mammals or birds as it has been proved each of this derived from a common ancestor. Therefore, the similarity in the body structure (morphology) in all mammals suggest vertebrates are related to a common ancestor and as they evolved from this, they share similarities not only in terms of morphology but also in genetics.

3 0
3 years ago
Read 2 more answers
Which of the following systems use the cardiovascular system for the transport of materials? excretory system digestive system e
Lady_Fox [76]

Answer:

Endocrine System

Explanation:

5 0
2 years ago
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In the water cycle water moving from oceans to clouds involes which change in water
Lelu [443]

Answer:

B. It turns salt water into fresh water

Explanation:

7 0
2 years ago
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