The group of biological molecules that are most diverse in function is
A) nucleic acids. B) lipids. C) proteins. D) carbohydrates.
C
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In an F+ × F- conjugation, the donor is the ________ strain.
A. F- B. F+ C. both F+ and F- (It is a reciprocal exchange) D. neither F+ nor F- (There is no exchange)
An opening in leaves that functions in the exchange of gases is called a ____
a. cuticle b. stoma c. guard cell d. pit e. pore
Polygynous species:
a. are usually sexually monomorphic. b. are usually sexually dimorphic, with males larger and more highly ornamented. c. are more commonly found in birds than in mammals. d. usually employ external fertilization. e. are usually sexually dimorphic, with females larger and more highly ornamented.
The questions that can be answered by science are:
A) limited by religious doctrine. B) without limit. C) limited by what is found in the living world. D) limited by what can be investigated using the scientific method. E) limited only by imagination.