The question above is incomplete, the options attached to the question are as follows:
A. extracting chlorophyll from algae to learn how these organisms gain energy from light.
B. engineering vehicles that use algae for fuel.
C. growing algae under different conditions and measuring their lipid production.
D. engineering algae to photosynthesize at higher rates.
ANSWER
The correct option is C.
Dr. Rose and her assistants set out to carry out scientific investigation that will identify living organisms that can grow rapidly and that will produce high quality lipids at the same time. The team had hypothesized that this type of organisms will be good candidates for production of bio fuels. The group concentrated on working with algae; these were grown under different conditions and their lipid contents were assessed. Their work has led to identification of many algae species as potential sources of bio fuel.
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Answer:
The correct answer to the question, 'which of the following scenarios is representative of how agricultural practice can affect the environment' is A. Option A is chosen because it is the only option that refer to another environment which is different from that of the farm. When fertilizers are washed to nearby ponds as a result of erosion, it causes a lot of negative changes in the pond. For instance, the chemicals in the fertilizer can be poisonous to some of the smaller organisms in the pond, this will result in the death of these organisms. Fertilizer run off can also cause excessive growth of plants such as algae in the pond. This may block out the light necessary for the survival of the organisms in the ponds and may also reduce the amount of oxygen available to the organisms living in the pond.
Explanation:
I believe it is E. Could be wrong though.<span />
Answer:
According to the hormone diagram of the menstrual cycle, the woman is not pregnant due to the behavior of progesterone and estrogens, whose levels do not increase, in addition to the absence of human chorionic gonadotropin.
Explanation:
The graph shows the behavior of hormones during a woman's menstrual cycle in the absence of pregnancy.
During a woman's normal cycle, estrogen, luteinizing hormone (LH) and follicle stimulating hormone (FSH) tend to increase prior to ovulation, reach their peak values at ovulation, and then decline, as shown in the graph. Progesterone, on the other hand, increases after ovulation and decreases if the woman does not become pregnant.
In the case of a pregnant woman:
- <u>Estrogens</u> continue to increase after ovulation, produced by the ovaries and placenta.
- <u>Progesterone</u> also increases its levels, as it is a hormone produced by the ovaries and placenta.
- <u>Hormone human chorionic gonadotropin</u> (HCG) appears and increases during pregnancy, due to the secretory activity of the placenta.
<em><u>The diagram represents the normal cycle of a woman who is not pregnant</u></em>.
