What is a function of cell division?
A) to turn skin cells into hair cells
B) to allow mature leaves to increase in size
C) to keep cell size small as multicellular organisms grow
D) to allow cell size to increase to its maximum
Answer: C
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Severe physical impacts on a habitat are called ____
Fill in the blank with the appropriate word.
Sexual reproduction
A. allows more offspring to be produced per individual. B. allows a parent to pass on 100% of their genes to offspring. C. increases genetic variation. D. results in the formation of a haploid zygote. E. only occurs in vertebrates.
Nerve impulses travel along neurons by the opening of channels that allow sodium ions to flow inward, followed by an outward flow of potassium ions
In order to ensure that the impulse may be produced at any time, sodium is actively transported out of the cell and potassium is transported into the cell by the sodium/potassium pump. Which of the following types of work is performed by the sodium/potassium pump? A) mechanical B) electrical C) concentration D) synthetic E) bioluminescent
What is the frequency of the a allele in the butterfly population?
A) 0.16 B) 0.04 C) 0.40 D) 0.64 E) 0.40