Answer:
Which of the following pairs of terms is mismatched?
D. bacteriostatic – kills vegetative bacterial cells
Explanation:
All the options mentioned are different methods of antimicrobial control. Germicide is a product that kills microbes, a sterilant destroys all living microorganisms, fungicide kills yeasts and molds and virucide inactivates viruses. When it comes to a<em> bacteriostatic agent not necessarily kills bacteria, but it stops them from reproducing. </em>To take into account, the best method to sterilize heat-labile solutions is membrane filtration.
Answer: 1. Once an altered gene is placed on an organism it can not be reversed.
2. New organism created by genetic engineering could
present ecological problems.
Explanation:
Looking at the fact that genetic engineering employ the viral vector that carries the functional gene inside the human body system, the repercussion are still unknown. They may even replace an important gene in the human body which could be dangerous to human.
Silent mutations are base substitutions that result in no change of the amino acid or amino acid functionality when the altered messenger RNA (mRNA) is translated.
Answer:
c. Two sister chromatids did not separate into the proper daughter cells during anaphase.
Explanation:
The observed cell is undergoing mitosis which does not include separation of homologous chromosomes. During anaphase of mitosis, two sister chromatids of each chromosome separate from each other. They move to opposite poles. This results in equal distribution of two complete sets of chromosomes to each daughter cell.
However, the failure of two sister chromatids of a chromosome during anaphase would lead to the formation of two abnormal daughter cells. One of the daughter cells would have one extra chromosome (2n+1) while the other would lack one chromosome from the diploid set (2n-1).
