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3 years ago

Which of these conditions is considered necessary for a

Biology

1 answer:

ddd [48]3 years ago

6 0

Answer:

All

Explanation:

You would need carbon dioxide to be able to sustain life forms such as plants, warm enough temperatures to allow the development of animals, (because they cannot be frozen), they would, of course, need oxygen to allow anyone to breathe, and finally liquid water to sustain healthy life, because we must hydrate that is necessary for survival.

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Another term for cold-blooded is

Lemur [1.5K]

Callous is another way to say it

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3 years ago

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The bacteria have an initial concentration of 1000 cells/cm3 . Each cell divides once every 30 minutes. Calculate how long it wi

Levart [38]

It will take 120 minutes for the concentration to become > 15000 cells/cm³

Given data:

Initial concentration ( density ) = 1000 cells / cm³

Target/final concentration = > 15,000 cells /cm³

<h3 /><h3>Calculating the concentration every 30 minutes </h3><h3 />

note : Given that each cell divides every 30 minutes

After the first 30 minutes

Concentration = 2000 cells / cm³

After 60 minutes

concentration = 4000 cells / cm³

After 90 minutes

concentration = 8000 cells / cm³

After 120 minutes

concentration = 16000 cells / cm³

Therefore after 120 minutes the concentration of the cells will be greater than 15000 cells/cm³ ( i.e. 16000 cells/cm³ )

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2 years ago

Examine the diagram of a cell. Which organelle is marked with an X?

Sergio [31]

Answer:

Mitochondrium

Explanation:

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2 years ago

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# X What phase is represented?

Rufina [12.5K]

Metaphase 2

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3 years ago

The CNS is vulnerable. There are several systems and structures in place which protect these vital tissues. How is the brain and

V125BC [204]

Answer:

1) Skull and Vertebral column

2) Meninges

3) Cerebrospinal fluid.

Explanation:

Central Nervous system:

CNS is the abbreviation of Central Nervous system. CNS controls the whole body functions so it is the most important component of the body. CNS consist of two parts 1) Brain and 2) Spinal cord

Both of these organs are very important and hence need to be protected. Nature provided these organs with certain protective mechanisms these includes

1) Skull and Vertebral column:

Skull is present around brain and vertebral column is present around spinal cord. These structure provides mechanical support to soft parts of CNS.

2) Meninges:

These are the membranes that provide antiseptic environment to the brain and hence protect it from microbes and other harmful substances.

3) Cerebrospinal fluid:

This fluid is present inside meninges which nourishes the brain and protect it from mechanical stresses.

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3 years ago