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zhuklara [117]
3 years ago
10

1. Why is diffusion insufficient to meet the oxygen requirements of multicellular organisms like humans?

Biology
1 answer:
astraxan [27]3 years ago
8 0

1.   The oxygen requirements of an animal cannot be met by the process of     diffusion as diffusion is a very slow process. To overcome this, multicellular organisms have specialized cells and tissues for performing various necessary functions of the body such as intake of oxygen and food.

2.   What criteria do we use to decide whether something is alive? Any visible movement such as walking, breathing, or growing is generally used to decide whether something is alive or not. However, a living organism can also have movements, which are not visible to the naked eye.

3.   An organism uses outside raw materials mostly in the form of food and oxygen. The raw materials required by an organism can be quite varied depending on the complexity of the organism and its environment.

4.   The various processes essential for maintaining life are nutrition, respiration, transportation, excretion, control and coordination.

here it is hope it helps you out...

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If the cell treated with a chemical that inhibits DNA synthesis is treated to undergo the process of the cell cycle, the phase that will be affected is the S-phase of interphase.

<h3>What is interphase?</h3>

The interphase stage of cell division is the resting stage between two successive divisions.

The interphase is further grouped into three phases namely:

  • G1 phase
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The synthesis phase of interphase is the stage where new DNA strand is synthesized, hence, if the cell treated with a chemical that inhibits DNA synthesis is treated to undergo the process of the cell cycle, the phase that will be affected is the S-phase of interphase.

Learn more about interphase at: brainly.com/question/17485110

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1 year ago
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ruslelena [56]

Answer:

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We do not notice it because we are on Earth and we turn together with it.

When the Earth revolves around its (imagined) axis, we call such a movement a rotation, and when it revolves around the Sun - a revolution.

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2 years ago
In the MSW landfill, what is contaminated water from wastes known as? In the MSW landfill, is contaminated water from wastes.
cupoosta [38]

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In the MSW (municipal solid waste) landfill, contaminated water from wastes is known as leachate. Leachate is the contaminated liquid (water) produced when percolating liquid, especially rainwater drains through wastes that are placed in a landfill. When the liquid enters wastes, it separates or filters out constituents from the wastes which result in the formation of leachate.  

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Answer:

c. A chromosomal mutation can change the total number of chromosomes in the cell.

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Explanation:

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