Sperm use ____ for their energy source
a. fructose
b. glucose
c. ions
d. proteins
e. prostate gland secretions
ANSWER: a
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After double fertilization, the zygote is ____, and the endosperm is ____
a. haploid; haploid b. diploid; haploid c. diploid, diploid d. diploid; triploid e. triploid; diploid
Under certain conditions, ________ fungi live in the roots of many species of plants and have a mutually beneficial relationship with the plants
Fill in the blank(s) with correct word
The leaves of plants can be thought of as "eating" sunlight. From an energetic perspective this makes sense because:
a. light energy, like chemical energy released when the bonds of food molecules are broken, is a type of kinetic energy. b. the carbon-oxygen bonds within a photon of light release energy when broken by the enzymes in the chloroplasts. c. both light energy and food energy can be converted to kinetic energy without the loss of heat. d. photons are linked together by hydrogen bonds, which release energy when striking the surface of a leaf. e. the carbon-hydrogen bonds within a photon of light release energy when broken by the enzymes in the chloroplasts.
The infective stage of the Giardia spp. is:
A. The Oocyst B. The trypomastigote. C. The Trophozoite D. The Cyst E. The Sporozoite