Subject SAT (College Board) Biology: Questions 199 - 203 of 805
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Question number: 199
» Cell
Question
Virus attacks a bacterium but neither multiplies nor does the bacterium die due to
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Assimilation |
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| b. | Viral stability |
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| c. | Lysogeny |
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| d. | Adsorption |
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Question number: 200
Question
Which one of the following is not uniform in all DNA molecules?
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | The pattern of the helix structure |
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| b. | The arrangement of sugar-phosphate groups |
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| c. | The sequence of nitrogenous bases on a strand of DNA |
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| d. | The pairing of adenine with thymine and cytosine with guanine |
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Question number: 201
» Cell
Question
Select the correct option with respect to mitosis
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Golgi complex and endoplasmic reticulum are still visible at the end of prophase |
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| b. | Chromatids separate but remain in the centre of cell in anaphase |
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| c. | Chromosomes move to spindle equator and get aligned along equatorial plate in metaphase |
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| d. | Chromatids start moving towards opposite poles in telophase |
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Question number: 202
Question
Gymnosperms are NOT
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Seed plants. |
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| b. | Naked seed plants. |
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| c. | Flowering plants. |
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| d. | Conifers. |
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Question number: 203
Question
Plasmid vectors utilized in cloning often contain a gene for the N-terminal 146 amino acids of the enzyme β-galactosidase. What is the purpose of including this gene in the vector?
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | It enables the plasmid vector to replicate in E. coli host cells. |
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| b. | It allows selection of E. coli host cells that contain plasmid in which the insert has been ligated. |
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| c. | It cleaves the insert to allow it to be ligated into the vector. |
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| d. | It allows selection of E. coli host cells that contain the plasmid. |
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