All of the following sexual changes occur in aging men EXCEPT
A) diminished ability to obtain an erection.
B) longer refractory period between orgasms.
C) extended duration of orgasm.
D) decline in the angle of the erection.
Question 2
Lawrence is 47 years old and has become frustrated because his vision is no longer sharp enough to do crossword puzzles unless he wears magnifying eyeglasses he purchased at his local drug store. He probably has
A) cataracts.
B) glaucoma.
C) macular degeneration.
D) normal age-related vision loss.
Examples of covalent modifications that occur to the amino terminal tails of histone proteins. The a
The sexual cycle of flowering plants involves alternation of sporophyte and gametophyte generations.
Mutualisms, such as those that occur among plants and pollinators, generally involve large numbers o
The Koala does not normally need to drink, because it can obtain all of the moisture it needs by eat
The effects of aging can be seen in the decline in function of many physiological systems.
A slowdown in athletic ability begins in the 20s, although it is only noticeable for those who are t