Enzymes are catalysts that speed up chemical reactions in the human body.
<h3>What do you mean by Catalysts?</h3>
Catalysts may be defined as those substances that enhance the rate of chemical reactions without being consumed in them.
Enzymes are also considered as catalysts in the body of living organisms. Basically, enzymes are proteins that assist in the speeding up of any chemical reaction in living entities.
Therefore, enzymes are catalysts that speed up chemical reactions in the human body.
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Answer:
A. S phase
Explanation:
The cell cycle involves all the series of division events that occurs to an organism. Cell division, which can be meiosis or mitosis, involves two main stages viz: Interphase and M phase.
Interphase describes the resting stage of the cell i.e. when the cell is not dividing. The cell uses this time to prepare itself for the next round of division. Interphase stage further consists of three main phases viz: G1, S and G2 phases.
In the S phase or synthesis phase of Interphase, the cell duplicates its genetic material (DNA). Hence, an onion cell observed by a student to have loosely coiled chromatin depicting DNA duplication is in the S-PHASE.
The cells show characteristics of tumors.
Tumor cells have the ability to grow and proliferate in absence of adhesion or anchoring. This is particularly helpful during metastasis when a cancer cell travels through the bloodstream to another location.
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A cancerous cell has a number of mutations that regulate cell division. In addition, they exhibit impairment in DNA repair system. Therefore, cancer cell divided fast. Since the DNA repair system is nonfictional, the cells do not pause division to repair the mutation.</span>
They only tested two to have a solid hypothesis you need a larger group.
