In addition to autosomes, what is contained in a human sperm cell?
A) an X chromosome always
B) either an X or a Y chromosome
C) a Y chromosome always
D) both an X and a Y chromosome
B
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Which of the following organisms have an
exoskeleton?
a. annelids b. arthropods c. cnidarians d. roundworms e. flatworms
A hydrogen bond is a(n)
a. sharing of a pair of electrons between a hydrogen and an oxygen nucleus. b. sharing of a pair of electrons between a hydrogen nucleus and either an oxygen or a nitrogen nucleus. c. attractive force between a hydrogen atom and either an oxygen or a nitrogen atom that are in other molecules or within the same molecule. d. covalent bond between two hydrogen atoms. e. covalent bond between a hydrogen atom and either an oxygen atom or a nitrogen atom.
Water is transported vertically through the plant via the process of translocation
____________________ Indicate whether the statement is true or false.
You have a friend who lost 7 kg (about 15 pounds) of fat on a regimen of strict diet and exercise. How did the fat leave his body?
A) It was released as CO2 and H2O. B) It was converted to heat and then released. C) It was converted to ATP, which weighs much less than fat. D) It was converted to urine and eliminated from the body.