What is another term for an identifiable structure known as the microtubule organizing centre (MTOC) of an animal cell?
a. a cell plate
b. a centrosome
c. a kinetochore
d. a centromere
Answer: b. a centrosome
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The apparent lack of intermediate forms in the fossil record can be explained by the ____ hypothesis
a. disruptive selection b. fossil decay c. punctuated equilibrium d. genetic drift e. allopatric speciation
The term used to describe bacteria that are shaped like curved rods is
A. coccobacillus. B. vibrio. C. bacillus. D. coccus.
Which of the following is a reason to graft
plants?
a. to maintain the quality of a plant b. to increase the hardiness of a plant c. to avoid plant diseases d. to produce seedless fruits e. all of these are reasons to graft plants
Prokaryotes contain a _________ chromosome, and eukaryotes contain ________ chromosomes
a. single-stranded circular; single-stranded linear b. single-stranded linear; single-stranded circular c. double-stranded circular; double stranded linear d. double-stranded linear; double-stranded ci