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Furkat [3]
3 years ago
11

In some people, substances such as peanuts, eggs, and milk cause an immune response. This response to usually harmless substance

s is most similar to the
1 action of the heart as the intensity of exercise increases
2 mechanism that regulates the activity of guard cells
3 action of white blood cells when certain bacteria enter the body
4 mechanism that maintains the proper level of antibiotics in the blood
Please answer + add an explanation!!
Biology
1 answer:
Harlamova29_29 [7]3 years ago
3 0

Answer:

Number 3

Explanation:

Number 3 or C is correct, "action of white blood cells when certain bacteria enter the body." This is the correct answer because white blood cells are in your body to fight off infections. some peoples immune system see these bacteria on the peanut, egg, or milk as an enemy so it tries to fight against it even though it is harmless to the body.

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Adenine is the last nucleotide at the 3' end of one strand of DNA. It is base-paired with thymine on the other DNA strand. Which
Jlenok [28]

Answer:

The two nucleotides are located on DNA strands that are parallel to each other

Explanation:

Deoxyribonucleic acid, commonly known as DNA, is one of the two types of nucleic acids. It is a molecule composed of a nitrogenous base, pentose sugar and a phosphate group. According to the information given in this question, Adenine is the last nucleotide at the 3' end of one strand of DNA. The following are factual about the nucleotide;

- Since DNA is a double-stranded molecule, the Adenine nucleotide will be base-paired with Thymine nucleotide (complementary base pairing) on the other DNA strand.

- Since complementary DNA strands are opposite to one another, this means that if the adenine has an unlinked 3' hydroxyl group, then the thymine must have an unlinked 5' phosphate group.

- Nucleotides in a DNA strand are joined to one another via a covalent bond called PHOSPHODIESTER BOND. Hence, the adenine and the thymine are each bonded to the previous nucleotide in the strand by a phosphodiester bond.

- In the complementary base pairing between two nucleotide bases, there are two hydrogen bonds between the adenine and thymine nitrogenous bases i.e. A=T.

- DNA strands that make up a molecule are complementary and opposite to one another, hence, they are said to be ANTIPARALLEL.

7 0
3 years ago
If God gave u a second chance at life what would you do?
Firdavs [7]
Well, since im living my first one still.. Ill do whatever i want in the first one, and then live out the second one as a good Christian to the best of my ability

hope this helps
8 0
4 years ago
In humans, the trait for tongue rolling is dominant over the trait for the inability of a human to roll his/her tongue. If a het
Lena [83]
You can use a punnet square to find this out:

       t      t
T   Tt    Tt     Answer: C
t     tt     tt

Where T = Tongue rolling (dominant) and t = Incapable (recessive)

8 0
3 years ago
Read 2 more answers
How could the activity of a farm affect the health of a nearby water source?
Katena32 [7]

Answer: Fertilizers and pesticides contribute to runoff that goes into the water, causing habitat degradation.

Explanation:

Fertilizers and pesticides are the chemical formulations which are added to the agricultural field so as to enhance the growth of the crops and raising their yield. The runoff is the water erosion. In runoff water from any source such as rainwater, water from the snow melt and water from the river stream flows over the surface of soil. It remains unabsorbed within the soil. Such water flows with an appropriate speed and mixes with the water reservoir.

Thus according to the given situation, the fertilizers and pesticides along with the water runoff will be added to the water reservoir. As a result of this the increase in abundance of chemicals in the water source can make the water habitat unfit for the survival of aquatic animals due to contamination.  

7 0
4 years ago
In humans, curly hair (HH) is incompletely dominant to straight (H'H'). The heterozygous individual has wavy hair (HH'). Cross t
Alex Ar [27]

Answer:

25% chance curly (HH) 50% chance wavy (HH') and 25% straight (H'H')

Explanation:

Make a Punnett square like so to find the probability of each hair type for the offspring of two wavy haired people

7 0
3 years ago
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