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3 years ago

How does the cell get rid of waste products like carbon dioxide

Biology

2 answers:

Elina [12.6K]3 years ago

8 0

Answer:

The correct answer is "The waste leaves through the cell membrane".

Explanation:

Most cellular reactions leave unwanted products or byproducts that cells need to get rid of. In order to so, the cell uses membrane transportation methods that allows the movement of useful material inside and the disposal of waste products to the outside. One example is carbon dioxide, which passes through the cell membrane down to its concentration gradient by simple diffusion.

stepan [7]3 years ago

4 0

<span>The waste leaves through the cell membrane</span>

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When a cell divides to make two new cells, it copies its DNA first. This is called DNA replication. Why do you think this is imp

Harlamova29_29 [7]

Answer:

DNA replication is important because without it, cell division could not occur. With DNA replication, the set of DNA of a cell can be duplicated and then each cell that results from division can have its own entire set of DNA, and cell division can theoretically continue indefinitely.

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3 years ago

Explain the relationship between each pair of terms: A. gene and chromosome B. gene and DNA C. gene and allele D. allele and mei

vladimir1956 [14]

Answer: I think it’s b

Explanation:

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3 years ago

What criteria is used to determine how organisms can be divided in a community?

Mkey [24]

Organisms are classified and divided in a community based on the modern classification system that was published by Carolous Linnaeus in the 18th century.

This criteria is also known as the Linnean system of classification, where the organisms are classified according to the following: Species, Genus, Family, Order, Class, Phylum and Kingdom.

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3 years ago

If 30% of the bases in human DNA are A, (a) what percentage are C? (b) What percentage are T? (c) What percentage are

galina1969 [7]

Answer:

DNA is present as genetic material in all the living organism except some virus. DNA structure follows the Chargaff's rule in which states that the ratio of pyrimidines to purines is equal to 1.

So, amount of adenine will be equal to thymine. If adenine is 30% then thymine is also 30%. Total amount of DNA is 100%. Cytosine and thymine are also equal in the DNA molecule. The total amount of cytosine and guanine is 40%. The amount of cytosine is 20% and the amount of guanine is also 20%.

Thus, thymine is 30%, cytosine is 20% and guanine is 20%.

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3 years ago

List and briefly describe the chemical sequence of events in the fight-or-flight response to a threatening situation from the bi

777dan777 [17]

Answer:

Binding taking place at the receptor site

G protein activates in the cell membrane

Conversion of GDP → GTP

Activation of adenylate cycles

Cyclic production of AMP → ADP

Initiation of the desired reaction in regard to the original message

Cyclic restoration of AMP → ATP

Explanation:

The description of the mechanism:

Right off the bat, epinephrine attaches to a molecule called a receptor (beta-adrenergic protein).

G protein, which is found on the inner side of the plasma membrane, is activated when epinephrine binds to it.

The GDP-carrying Alpha subunit of G protein is isolated during activation. After that, the GDP is translated to GTP.

Adenylate cyclase is then activated by GTP.

The only enzyme that can catalyze the transformation of ATP to CAMP is adenylate cyclase (Cyclic adenosine monophosphate). As a result, the CAMP molecule (secondary messenger) is produced.

CAMP stimulates protein kinase A, and the cycle repeats till the glycogen phosphorylase enzyme is triggered.

After that, the cyclic amp is brought back and restored.

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3 years ago