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Alecsey [184]
4 years ago
5

Which statement is true about DNA replication?

Biology
1 answer:
lorasvet [3.4K]4 years ago
8 0
The second option is the right one.

For DNA replication to occur, an existing double-stranded DNA (dsDNA) must be “unzipped” to form two strands of single-stranded DNA (ssDNA). The ssDNA then serves as the scaffold onto which a complementary strand of DNA is built by adding nucleotides one by one. At the end of this process, there are two identical strands of dsDNA, which then move into the daughter cells.
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Which organisms resemble tiny animals?
Kisachek [45]

<em>Your answer is </em><u><em>microbe</em></u><em>, but also known as </em><u><em>microorganism</em></u><em>.</em>

<em>A microbe is any living organism that spends its life at a size too tiny to be seen with the naked eye. Microbes include bacteria and archaebacteria, protists, some fungi and even some very tiny animals that are too small to be seen without the aid of a microscope. Viruses and the recently discovered prions are also considered microbes.</em>

<em>The term microbe is short for microorganism, which means small organism. To help people understand the different types of microbes, they are grouped or classified in various ways. Microbes are extremely diverse and represent all the great kingdoms of life, including the animals, plants, fungi, protists and bacteria (see the tree below). In fact, in terms of numbers, most of the diversity of life on Earth is represented by microbes.</em>

7 0
3 years ago
How does your immune system remember a particular pathogen?
Setler [38]
They form memory cells in which those cells remember the same pathogen for faster antibody production, in aid of future infections.
5 0
4 years ago
Which characteristic could be observed in an organism classified in kingdom protista
kicyunya [14]
The correct option is B.
The kingdom protista is made up of living organisms which can not be classified as plant, animal or fungus. They have eukaryotic cells and they are mostly unicellular, although, some of them such as kelp are multi cellular. A group of the organism in the kingdom called dinoflagellates have a pair of flagella of unequal lengths which which they move about in their aquatic habitat.<span />
8 0
3 years ago
Read 2 more answers
The water-to-land transition occurred independently several times in the protostomes. Which of these is not an example of an ada
goldfiish [28.3K]

Answer:

The incorrect statement is : Decreased surface-to-volume ratios to increase the efficiency of gas exchange in air

Explanation:

the fundamental problem that an aquatic animals face during its progress to land to save the egg or embryo from parching. So they have developed cleidoic eggs where undeveloped organism stay implanted inside extra embryonic layers, for example, amnions and are secured in egg shells. These eggs have minute pores so embryo can make gas exchange.

This egg shells forestall water misfortune. Interior treatment, however are available in certain sharks, yet it is for the most part a variation of land creatures. Explicit intromittent organs have been created for moving of sperm in to female. In contrast with water , gaseous movement is in land creatures is happen through advancement of lungs which contain numerous alveoli where gaseous exchange is occurred. Decreased surface to volume ratio decrease productivity of gas exchange , not increment.

Thus, The incorrect statement is : Decreased surface-to-volume ratios to increase the efficiency of gas exchange in air

8 0
3 years ago
Why can’t a purine hydrogen bond with another purine within the sugar phosphate backbone of DNA? State your reason with all the
Vesna [10]

Answer:

due to the structural-binding properties of the nitrogen bases

Explanation:

Adenine and guanine are purines (two-carbon nitrogen ring bases) that pair with thymine and cytosine pyrimidine nitrogen bases (one-carbon nitrogen ring bases), respectively. These specific base-pair rules are due to their hydrogen bonds (i.e., van der Waals forces), which stabilize the structure of the DNA helix. Cytosine and guanine have three sites to form hydrogen bonds to each other, while adenine and thymine have only two sites. The specific interactions between purines and pyrimidines are critical for proper bonding and attachment to the sugar-phosphate DNA backbone (i.e., for the formation of the DNA double-helical arrangement).

5 0
3 years ago
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