The zygote goes through ____ to become a(n) ____.
A. cleavage; blastula
B. cleavage; gastrula
C. zygote formation; embryo
D. cleavage; egg
E. fertilization; blastula
Answer: A
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The primary function of the large intestine is to ____
a. absorb water b. absorb nutrients c. complete the digestion of carbohydrates d. complete the digestion of fats e. complete the digestion of protein
The infinite variety of antibodies that can be generated by B cells is due to
1.the infinite variety of genes in these cells. 2.the shuffling of genes to produce an infinite variety of proteins. 3.the recombination of genes due to crossing over. 4.the infinite variety of genes in these cells and the recombination of genes due to crossing over. 5.the infinite variety of genes in these cells, the recombination of genes due to crossing over, and the shuffling of genes to produce an infinite variety of proteins.
What is the length of the DNA contained in the nucleus of a typical human cell?
a. about 2 km b. about 100 m c. about 2 m d. about 10 mm
When does bone remodeling occur?
Until teenage years When tiny cracks in bones occur after a jump from a high place Bone remodeling is a lifelong process Both B and C