An antibiotic that increased the activity of ________ would likely result in cell death
A) autolysin
B) binary fission
C) stationary growth
D) ionic bonds in proteins
Answer: A
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What are the cancer causing genes called?
A. oncogenes.
B. proto-oncogenes.
C. tumor suppressor genes.
D. viral genes.
Which of the following are ways in which scientific names are derived? Select all that apply.A) Scientific names can be descriptive.B) Scientific names are often based on an organism's common name.C) Scientific names can include geographic descriptions.D) Scientific names can be derived from the name of a person.E) Scientific names can be based on mythical characters.
What will be an ideal response?
Halophytes are plants that live in saline soils. The high osmotic potential of the salt solution in the soil creates a very negative water potential. What can halophytes do so that water will flow into the roots?
A. They can open all their stomata so that transpiration "pulls" more water into the roots. B. They can remove the mycorrhizal fungi from their roots decreasing the competition for water. C. They can close their stomata so that less water is lost through transpiration. D. They can increase the solute concentration in their roots creating a water potential that is more negative than the soil. E. They can pump ions out of the plant creating a water potential in the roots that is more positive than the soil.
After a copper smelter begins operation, local downwind populations of plants begin to adapt to the resulting air pollution. Scientists document, for example, that the acid tolerance of several plant species has increased significantly in the polluted
area. This is an example of A) stabilizing selection. B) disruptive selection. C) directional selection. D) genetic drift.