Which structure produces cell movements?
a. intermediate filaments
b. flagella
c. collagen
d. microfilaments
e. centrioles
ANSWER: b
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Which situation would be most likely to form a fossil under normal environmental conditions?
A. An elephant that died at the edge of a waterhole. B. A bird that died and fell to the forest floor. C. A slug that died in leaf litter. D. A jellyfish that died in an estuary.
How are some protists of commercial value?
What will be an ideal response?
A 25-year-old woman is in early labor. After delivering the baby (by a normal vaginal delivery), the patient asks the doctor about some symptoms she had during pregnancy, including discharge and painful urination
She has a history of multiple sex partners and very rarely used condoms. You suspect a potential STD is the cause. The biggest risk at this point is ________. A) There is no major risk at this point. B) to the mother; an untreated STD is almost always fatal C) to the baby; he or she can be infected while moving through the birth canal D) to the mother; she may become infertile
What type of enzyme is not made of protein?
A. Ribozyme B. Apoenzyme C. Cofactor