Subject SAT (College Board) Biology: Questions 203 - 206 of 824
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Question number: 203
Question
Moss peat is used in a packing material for transporting plants and flowers to distant places as
Choices
| Choice (5) | Response | |
|---|---|---|
a. | It is easily available as cheap | |
b. | It reduces transpiration | |
c. | It is hygroscopic | |
d. | It serve as a disinfectant | |
e. | None of the above | |
Question number: 204
Question
Some enzymes covalently bind a non-protein organic molecule to the active site. The organic molecule concerned is required if the enzyme is to catalyze a reaction on a substrate. What is the term used for such a molecule?
Choices
| Choice (5) | Response | |
|---|---|---|
a. | Prosthetic group | |
b. | Modulator | |
c. | Coenzyme | |
d. | Cofactor | |
e. | Question does not provide sufficient data or is vague | |
Question number: 205
Question
What is common between earthworm and cockroach?
Choices
| Choice (5) | Response | |
|---|---|---|
a. | Malpighian tubules | |
b. | Solid ventral nerve cord | |
c. | Nephridia | |
d. | Cuticle | |
e. | None of the above | |
Question number: 206
Question
In which of the following type of paper, chromatography does the mobile phase move horizontally over a circular sheet of paper?
Choices
| Choice (5) | Response | |
|---|---|---|
a. | Ascending paper chromatography | |
b. | Ascending – descending chromatography | |
c. | Descending paper chromatography | |
d. | Radial paper chromatography | |
e. | None of the above | |