Answer:
C
Explanation:
First off, humans are considered animals, and since animal cells don't have chloroplasts, A and D are immediately incorrect. B is incorrect because lysosomes eject enzymes that digest materials in the cell, and to heal skin, you dont need to digest anything/ use enzymes to get rid if materials. That means the answer is C. The nucleus is the control center for the cell, so it tells the cell what to do. The mitochondria creates energy for the cell, and since it takes energy to heal, this answer is correct. (Tip- I find that using process of elimination in biology questions helps a lot.) Good luck!
Statistical questions and questions that don't have extra variables.<span />
Answer: A. sorE encodes a gene that increases I. hockious virulence
Explanation:
Notice that at the start of the study, there were 10 times mutant gene lacking sorE compared to the wild type. After 24 hours, it reduced to 5 times compared to the wild type, this is an indication that sorE is a virulence gene and it's absence reduces the virulence of the bacteria.
The answer is Type.
In the fitt principle, the choice of swimming instead of
walking would be an example of Type. Fitt principle is a set of rules that must
be adhered to in order to benefit from any form of fitness training program. These
rules relate to the Frequency, Intensity, Type and Time (FITT) of exercise. The
type of exercise that is done is the last part of the Fitt principle.
