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padilas [110]
3 years ago
7

Which of the following statements about metabolism in

Biology
1 answer:
emmasim [6.3K]3 years ago
4 0

Answer:

C

Explanation:

Hope this helped! ♡ nehhhhh

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One reason that regulation of gene expression is important is that it saves energy and materials from being used when they are n
lara [203]

Answer:

d. transcriptional regulation (regulation of whether transcription occurs)

Explanation:

If the product of a gene is not needed, then allowing the transcription of such gene to proceed only to be regulated after or even after translation will result in a mere wastage of resources. It thus means that the resources utilized for transcription has been wasted.

<em>Hence, the correct option is d.</em>

5 0
3 years ago
Some organisms, like lizards who bask in the sun, use ____________ to help regulate their ____________ environment.
dolphi86 [110]

Answer:

location, internal

7 0
3 years ago
Kevin is studying predator-prey interactions. One day he notices a spider eating a cricket caught in its web. Later that day, a
s344n2d4d5 [400]

Answer:

The correct answer is option - A. 0.

Explanation:

Producers are the organism that produces on their own. They do not depend on other organisms for their nutrition and energy such as green plants. They transfer energy and nutrition.

In the given scenario there is no producer present all are consumers of different levels. Cricket is a primary consumer, a spider is a secondary consumer and bird is the third consumer in this food chain.

Thus, the correct answer is option- A. 0.

4 0
3 years ago
HELP ME PLEASE !!!!!!!!!!!!
klasskru [66]
The answer to the first question is a.
4 0
3 years ago
Read 2 more answers
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
3 years ago
Read 2 more answers
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