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jeka57 [31]
3 years ago
15

What's the difference between plant and animal cells?

Biology
1 answer:
EleoNora [17]3 years ago
8 0
Plant cell has chloroplasts, vacuole and cell wall...
animal cell doesn't have any of these...
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Acid rain and other forms of pollution can cause soil acidification, which decreases the number of decomposers in the soil. What
Liono4ka [1.6K]

Answer:The question is incomplete because the options are not given. Here are the options.

a. The level of energy available in the ecosystem would increase, which would cause the population of autotrophs to increase.

b. The level of available nutrients in the soil would decrease, which would cause the population of producers to decrease

C. The population of primary consumers would increase because of increased production by autotrophs.

d. The population of primary consumers would increase because of decreased competition from decomposers.

The current answer is option B.

The level of available nutrients in the soil would decrease, which would cause the population of producers to decrease.

Explanation:

This is because when the soil is acidic it will reduce the availability of plants nutrients in the soil and it will result in accumulation of toxic chemicals which can affect the growth of plants.

If nutrients are not available for plants growth which is primary producer, it will result in poor growth, low photosynthesis and hence the production of glucose will be reduced because nutrients is essential for plants growth.

4 0
3 years ago
Limiting the amount of human waste and chemicals in run off will decrease what ? Air pollution Soilf
LenaWriter [7]
Water pollution. It runs into creeks and pollutes the water and ruins the quality.
7 0
4 years ago
What do we call the three consecutive nucleotides that specify amino acids
kogti [31]

Answer:

three nucleotides—called a triplet or codon—codes for one particular amino acid in the protein. The nucleotide sequence in the DNA is first transcribed into a molecule of messenger RNA (ribonucleic acid).

Explanation:

7 0
3 years ago
(BRAINLIEST QUESTION) Natural selection is an important part of evolution. It is:
ladessa [460]

Answer:

The answer to the first one is B. A mechanism for the evolution of a population to become better adapted to their environment over many generations.

The answer for the second one is C.vestigial

Explanation:

8 0
3 years ago
What is the biochemical explanation for why adding glucose to a bacterial culture containing lactose significantly decreases pro
MatroZZZ [7]

Answer:

If we add glucose to the culture with lactose, the <em>lac operon</em> would be turned off and the production of <em>beta-galactosidase, </em>other enzymes and molecules that the operon transcribes, would decrease.

On the contrary, if we add lactose to a bacterial culture containing glucose, the <em>lac operon</em> would be on, transcribing the genes, hence, producing beta-galactosidase but only at a small rate. Because the bacteria already got the energy from the glucose.

Explanation:

An operon is a group of structural genes whose expression is regulated by a <em>promoter, operator and regulator genes</em>. In this particular case, they are talking about the lactose operon, <em>lac operon</em>. This operon is required, in bacteria, to obtain energy from lactose when there is no glucose present.

The lac operon contains a series of genes, <em>lacZ, lacY</em>, and <em>lacA</em>. The gene <em>LacZ</em> codifies an enzyme required to break the lactose, <u>beta-galactosidase</u>. <em>LacY</em> codifies for another enzyme required in the transport of lactose inward the cell. And finally, <em>LacA</em> produces a molecule that is involved in detoxification.

 

The <em>lac operon</em> is regulated, among others, by the presence of glucose and lactose. The glucose is the preferable source of energy for bacteria so if there are lactose and glucose the glucose would be used for energy at a bigger extent. In the <u>absence of glucose</u>, the <em>lac operon</em> plays a vital role and helps the bacteria to obtain energy from lactose.

When there is glucose but no lactose available, there is a <u>repressor</u> than binds to the promoter so the <em>lac operon</em> is OFF cannot express the genes.

On the other hand,when there is lactose and no glucose, lactose enters the cell and some of this molecules turn to alolactose. <u>Alolactose molecules</u> bind to the repressor so the operon is not repressed anymore and the <em>lac operon</em> would be ON producing enzimes and molecules.

If the <em>lac operon</em> is ON ( glucose absent ) the production of <u>beta-galactosidase</u> would be high, on the other hand, if the operon is OFF (glucose present) the production of <u>beta-galactosidase</u> decreases.

In the presence of <u>both lactose and glucose</u>, the genes for the lactose metabolisms are transcribed at low rates in the <em>lac operon</em>.

4 0
3 years ago
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