For your eye to focus on this sentence, the ciliary muscle would need to:
a. contract for the lens to get rounder.
b. contract for the lens to get flatter.
c. relax for the lens to get rounder.
d. relax for the lens to get flatter.
e. relax to thin out the lens.
a
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What important feature(s) of noncovalent bonds makes them so important to life?
A. They are strong bonds that hold atoms together tightly in cells. B. They are weak in a cellular environment so they can be made, broken, and reformed easily. C. They can only occur in cells. D. Both a & c. E. Both b & c.
In land plants, ________ transports water and minerals from the soil, and ________ transports food created from photosynthesis.
a. xylem; phloem b. xylem; spores c. phloem; xylem d. phloem; gametes
Linked genes
A. are alleles that are found in different daughter cells. B. have no alleles. C. have more alleles than usual. D. are found on the same chromosome. E. are found in the same species.
An example of a boneless muscular organ is a(n) ____
a. urethra b. tendon c. ligament
d. tongue e. muscle fiber