The range of all factors that influence whether a species can obtain resources essential for survival and reproduction is
its ____.
a. habitat
b. ecological niche
c. carrying capacity
d. ecosystem
e. community
ANSWER: b
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A homeodomain is a region within a protein that
A) acts as a receptor. B) has kinase activity. C) binds to specific base pair sequences. D) binds to transcription factors.
Which of the following enzymes join the
paired sticky ends of DNA fragments? a. reverse transcriptases b. restriction enzymes c. DNA ligases d. DNA polymerases e. polynucleotide kinases
Which of the following statements is a testable scientific hypothesis?
A) Antioxidants from food are better than antioxidants from a vitamin pill. B) Eating fish reduces the chance of having a stroke. C) Embryonic stem cell research will allow scientists to find a cure for diabetes. D) Smoking makes people less attractive.
In dividing cells, most of the cell's growth occurs during _______.
Fill in the blank(s) with the appropriate word(s).