Which of the following is a unique organelle found within some protists but not in higher animal cells?
A. Mitochondrion
B. Contractile vacuole
C. Endoplasmic reticulum
D. Golgi apparatus
Answer: B
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Which of the following statements about primates is true?
a. Prosimians are typically nocturnal. b. Prosimians are larger than anthropoids. c. Prosimians have larger brains than anthropoids. d. Prosimians include monkeys, apes, and lemurs.
Which of the following groups are made up of almost
exclusively decomposers? a. Plantae b. Fungi c. Animalia d. Monera e. Protista
How many cholera bacteria must be ingested in order to become ill?
a. 100,000 b. 500,000 c. 1,000,000 d. 10,000,000 e. 100,000,000
What are the sex-chromosome constitution (X and Y chromosomes) of the inviable offspring resulting from a cross between a white-eyed female (Xw XwY) and a wild-type male (normal chromosome complement) in Drosophila melanogaster?
A) X+Y B) XwXwY and YY C) YY and XwYY D) X+XwXw and YY E) X+XwY and X+XwXw