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ra1l [238]
3 years ago
11

1) how is cell division normally controlled

Biology
1 answer:
Anon25 [30]3 years ago
6 0

Answer:

some specific safeguard protein are present

Explanation:

the specific protein which are present at G1 phase name cyclin dependent kinase they also initiate dna division

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(Ch. 27.4) Many people are allergic to substances in the environment, such as ragweed pollen, as well as foods, such as peanuts.
djverab [1.8K]

Answer:

C. The substance does not directly harm tissues and is not a pathogen, but nevertheless triggers an inflammatory response.

Explanation:

When a person is allergic to a substance, his or her immune system recognizes a harmless substance, such as components in food, pollen, or dust, as a treat. As a consequence, it starts an immune response that leads to inflammation. The substance that starts the allergic reaction is called an allergen, and it is not a pathogen because it is not a real threat to the body since it does not infect cells. When the allergen enters the body, it binds to antibodies that are in contact with a special type of cell. These specific cells will release a substance known as histamine. Histamine will produce an inflammatory reaction affecting different tissues in our body. For example, it can make us sneeze, have a running nose, swelling parts of our body, have itchiness and redness, amongst others.

3 0
2 years ago
List by size: gene, cell, chromosome, atom, nucleus, base subunit, nucleotide
Makovka662 [10]
Cell nucleus chromosome gene nucleotide base subunit atom
4 0
3 years ago
This morning you awoke to the wonderful smell of cinnamon rolls cooking. Your roommate offers you one of these fresh baked delic
yaroslaw [1]

Answer:

Ego-depletion.

Explanation:

Ego-depletion may be defined as the idea used to self control upon the mental resources that can be used by the individual. Individual with low mental ability has low self control.

The individual that suffers from ego-depletion has impair ability to control themselves for the later time. This might even cause the hindering in the self control as well. Self control is important for an individual even at personal levels. The ego-depletion might create hard time for the restraint.

Thus, the answer is ego-depletion.

4 0
3 years ago
You isolate some muscle fibers to examine what regulates muscle contraction. When you bathe the muscle fibers in a solution cont
PolarNik [594]

Answer:

Experiment 4. Relaxed, the drug will stop the calcium so that it does not act on the troponin

Experiment 5. Contraction: In order for the muscle to relax, the actin and tropomyosin union must occur.

Experiment 6. Relaxation: the release of the actin-myosin complex occurs with consumption of ATP, thus it slides and generates contraction, by adding a hydrolyzable analog, this reaction is avoided giving rise to a prolonged actin-myosin binding which leads to relaxation while last effect.

Experiment 7. Ca2 + Contraction is very necessary so that during muscle contraction troponin can be extracted.

6 0
3 years ago
Why is it difficult for scientist to find fossils from the pre-Cambrian period
mojhsa [17]
Because Precambrian rocks are in short supply, hence fossil evidence is harder to find.they only discovers sections of some Precambrian rocks there were no bones or shells to be permineralized.
5 0
3 years ago
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