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castortr0y [4]
3 years ago
13

RNA primer constructed during DNA replication needs to be replaced because RNA differs from DNA. It contains_______ instead of__

_____ .
1. adenine, cytosine, uracil

2. adenine, guanine, thime
Biology
2 answers:
Zarrin [17]3 years ago
8 0
DNA- adenine, guanine, thymine, and cytosine

RNA- adenine, guanine, uracil, and cytosine

So RNA contains uracil instead of thymine
d1i1m1o1n [39]3 years ago
6 0

Correct answer: 1. adenine, cytosine, uracil

RNA is a polymer that consists of ribose sugar and phosphate backbone. The four different types of nitrogenous bases found in the RNA are adenine, guanine, cytosine, and uracil.

Structurally DNA and RNA are similar, One major difference between DNA and RNA is that RNA consists of ribose sugar instead of deoxyribose sugar in DNA. Another difference is that RNA possess Uracil instead of thymine in DNA.

Hence, the correct answer would be adenine, cytosine, uracil .



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Kendra is studying the energy pyramid shown. which statement is supported by the energy pyramid? the ecosystem can support fewer
lara31 [8.8K]

Ecosystem an area where plants, animals, and other organisms, co-ordinate for their living. According to energy pyramid, ecosystem can support fewer foxes than grasshoppers.

<h3>What is energy pyramid?</h3>

Energy pyramid is the flow of energy from one tropic level to another which is always erect.

After each level, 90% energy is lost in environment as heat. There is  loss of energy at each tropic level.

As foxes comes after grasses in energy pyramid, so the ecosystem can support fewer foxes than grasshoppers.

Thus, the correct option is A.

For more information about energy pyramid, visit:

brainly.com/question/2515928

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2 years ago
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When information has to cross our corpus callosum, we respond _____ when the information does not cross the corpus callosum?
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When information has to cross our corpus callosum, we respond slower than when the information does not cross the corpus callosum.

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7 0
2 years ago
Read each of the sentences that describe a phase of meiosis. Place each sentence into the correct box.
Allushta [10]

Answer:

prophase 1(Homologous chromosomes pair to form a tetrad.

prophase 1(Crossing-over may occur between the non-sister chromatids).

Metaphase 1 (Homologous chromosomes line up at the center of the cell.)

Anaphase 1 (Homologous pairs separate and move towards opposite ends of the cell)

Telophase 1 (A nuclear membrane forms and cytokinesis follows).

Metaphase 2 ( The haploid number of duplicated chromosomes line up at the metaphase plate.

Anaphase 2 (Sister chromatids separate and become daughter chromosomes that move to the poles)

Meiosis 2: Four haploid daughter cells are formed that are not genetically identical.

Explanation:

Meiosis is a type of cell division that gives rise to gametes ( offsprings). This type of cell division occurs only in the reproductive organs. A diploid cell has two sets of chromosomes: one from the female parent and the other one from the male parent. When the diploid cell undergoes meiosis, the chromosome replicate once and the nucleus and cell duplicate twice giving rise to four haploid gamete cells.

The phases of meiosis occurs in two step divisions. Homologous pairs separate during the first round cell division which occurs in MEIOSIS 1 while the sister chromatids separate in the second nuclear division called MEIOSIS 2.

In each round of division, cells go through four stages: PROPHASE, METAPHASE, ANAPHASE, and TELOPHASE. The specific events that occur in these stages are already listed in the above answer.

Generally, at the start of meiosis, each member of a homologous pair of chromosomes, which are made up of two chromatids, moves to lie side by side. While they are thus paired, genetic material is exchanged between the chromatids. This is known as CROSSING OVER.

When the nucleus divides for the first time, the chromosomes in a given pair( not the chromatids) separate and move to opposite ends of the cell. This results in only half the number of chromosomes going to each daughter cell.

During the second nuclear division, the chromatids separate and move to opposite ends of each daughter cell giving rise to four gamete cells, each with a haploid number of chromosomes.

7 0
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The answer would be D because it leaves you thinking about what will happen next. Hope this helped you out .
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3 years ago
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