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yarga [219]
3 years ago
13

Nicotine is only one of the many toxic chemicals inhaled while smoking. What effect can such toxic chemicals have on the body?

Biology
1 answer:
svet-max [94.6K]3 years ago
5 0
The effect of such toxic chemicals to the body is that they stimulate uncontrolled cell division. Uncontrolled cell division or cells proliferation may lead to cancer. The unchecked cell growth results to mutations in genes that can cause cancer by accelerating cell division rates or inhibiting normal controls on the system, such as cell cycle arrest or programmed cell death. 
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The primary source of the specificity of enzymes is ________. Select one: a. their locations within the cell b. their polarity,
Aleks [24]

Answer:

c. their shape, which relates to the lock-and-key model

Explanation:

The primary source of the specificity of enzymes is their shape, which relates to the lock-and-key model

Hope this helps

plz mark brainliest

Have a nice day!!!!

3 0
3 years ago
What is a process where organisms better adapted to their environment tend to survive and reproduce
AveGali [126]

Answer:

Natural selection

Explanation:

8 0
3 years ago
scientists believe the earth likely warmed between 0.65 celsius and 1.05 celsius with an average value of 0.85 celsius between y
scoray [572]

Answer:

The lower limit is 0.65°C

The upper limit is 1.05°C

the average is 0.85°C

The difference between the average and the lower limit is:

0.85°C - 0.65°C = 0.20°C

the difference between th average and the upper limit is:

0.85°C - 1.05°C = -0.20°C

Then we can write the change in temperature as:

T = 0.85°C ± 0.20°C

Now we want to find the error bar.

The error bar would be the total distance between the lowest value and the largest value.

Then the error bar is:

1.05°C - 0.65°C = 0.40°C

notice that the error bar is twice the error, which makes a lot of sense because the error (± 0.20°C) goes up and down.

Then the error bar in this measure has a magnitude of 0.40°C.

4 0
3 years ago
In a large population of plants, notches in the leaves are caused by a dominant allele N and lack of notches by a recessive alle
Jobisdone [24]

Answer:

C

Explanation:

If the population is in equilibrium, the allele frequencies will be constant.

There is nothing about the heritability of dominant or recessive alleles that make dominant ones any more likely by nature. This rules out choices A and B.

Genetic drift mentioned in D refers to alleles leaving a population. Nothing like this was mentioned in the question, so count that answer out.

C is the only remaining answer by process of elimination. It is also the most logical choice. Directional selection refers to a process of natural selection wherein extreme phenotypes (notched leaves, or non-notched leaves) are favored. In this case, there may be some external pressure causing notched leaf plants to be more evolutionarily fit, meaning that they survive long enough to reproduce more and increase allele frequency of the dominant allele.

5 0
3 years ago
What adaptation does a tegument provide? Briefly describe the layers of the tegument in a Trematode.
pentagon [3]

Answer:

yhggklkbbklmbb

nnkkkj

Explanation:

बhjioihikiygu

7 0
3 years ago
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