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zalisa [80]
2 years ago
9

How many hours of activity should portion sizes for meals be enough to sustain for?a. 1

Biology
1 answer:
tia_tia [17]2 years ago
7 0

Answer: C. & D.

Explanation:

Experts say that there should be a three-five hours interval between meals.

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Assume that a particular human cell is examined under a microscope, and it contains 22 autosomes and a Y chromosome. This cell i
frez [133]

Answer:

A sperm cell

Explanation:

A diploid cell has 46 chromosomes which is normally signified by somatic cells. Germ cells or gametes are haploid cells therefore they contain only 23 chromosomes. Male gamete contains 22 autosomes and one sex chromosome. That sex chromosome can be X or Y.

Female gamete does not have Y chromosome as a sex chromosome, it has only X chromosome as a sex chromosome. So Y chromosome in a human cell which have 22 autosomes determines that it is a male gametic cell or a sperm cell. Sperm cells that have a Y chromosome if fuses with female gamete produce male offspring(XY).  

So the correct answer is- a sperm cell.

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2 years ago
As the concentration of molecules outside a cell increases, more molecules will enter the cell because--
malfutka [58]

Answer:

of diffusion

Explanation:

Molecules move down a concentration gradient without the need to use energy. This means they move from a high concentration to a low concentration. This occurs across a semi-permeable membrane, like the cell membrane, by simple diffusion.

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What factor creates the most difficulty in predicting the possible consequences of different control methods? a. species interac
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Under the influence of gravity, over time the dense central part of a galaxy will do what?(1 point)
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Answer:

D

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