As a direct result of cleavage, ________

a. a zygote becomes a blastula
b. ectoderm differentiates from endoderm
c. a blastula becomes a blastocoel
d. a blastula becomes a gastrula


a

Biology & Microbiology

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Predict the change in surface area and volume of a spherical cell if the diameter of the cell doubles:

A. The surface area will increase by a factor of 4, while the volume will increase by a factor of 8. B. The surface area will increase by a factor of 8 while the volume will increase by a factor of 4. C. The surface area will increase by a factor of 2 and the volume will increase by a factor of 4. D. The surface area and volume will both increase by a factor of 4.

Biology & Microbiology

The eukaryotes first appear in the fossil record

about ____ million years ago.

a. 1.8 b. 2.2 c. 2.7 d. 3.6 e. 1.5

Biology & Microbiology

The majority Neanderthal fossils have been found in

a. Asia b. india c. Africa d. Europe

Biology & Microbiology

Exocrine glands secrete all of the following EXCEPT ____.

A. mucus B. hormones C. earwax D. milk E. digestive enzymes

Biology & Microbiology