In humans, the _________ determines the sex of the offspring because __________.
A. male ... the sperm can fertilize either a female egg or a male egg
B. female ... only the female has two functional sex chromosome
C. male ... the male can contribute either an X or a Y chromosome
D. chromosome contribution from both parents ... the offspring uses all the parents' chromosomes
C. male ... the male can contribute either an X or a Y chromosome
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How does the size of fungal hyphae contribute to their ability to decompose detritus?
A. Fungal hyphae have a low ratio of surface area to volume, so they are able to absorb more nutrients. B. Fungal hyphae have high ratio of surface area to volume, so they are able to absorb more nutrients. C. Fungal hyphae have a low ratio of surface area to volume, so they are able to secrete more digestive enzymes into the surrounding environment to break down detritus. D. Fungal hyphae have a high ratio of surface area to volume, so they are able to secrete more digestive enzymes into the surrounding environment to break down detritus.
The most fundamental and important molecule that distinguishes living systems from nonliving matter is ____
a. protein b. DNA c. fructose d. water e. glucose
How does the amount of yolk relate to the nourishment of the organism?
a. An egg with a small amount of yolk contains all of the nutrients for the embryo's development. b. An egg with a large amount of yolk contains all of the nutrients for the embryo's development. c. An egg lacking yolk contains all of the nutrients for the embryo's development. d. There is no relationship between the amount of yolk and the nourishment of the organism. e. All animals have the same amount of yolk and provide the same amount of nourishment.
During metamorphosis, a tadpoles tail is reduced in size by the process of _____
A) regeneration B) apoptosis C) oxidative phosphorylation D) re-differentiation