Cells capable of producing all the various types of cells of the adult are called ____ cells

a. semipotent

b. pluripotent
c. totipotent
d. multipotent
e. differentiated


ANSWER: c

Biology & Microbiology

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Cyanide poisons mitochondria by blocking the final step in the electron transport chain. Human red blood cells placed in an isotonic solution containing cyanide are likely to _____

A) retain the normal cell shape, but the mitochondria will be poisoned B) lyse as the cyanide concentration increases inside the cell C) switch to anaerobic metabolism D) become unable to carry oxygen E) be unaffected

Biology & Microbiology

In rabbits, the homozygous CC is normal, Cc results in deformed legs, and cc results in very short legs. The genotype BB produces black fur, Bb brown fur, and bb white fur. If a cross is made between brown rabbits with deformed legs and white rabbits

with deformed legs, what percentage of the offspring would be expected to have deformed legs and white fur? A) 25% B) 33% C) about 66% D) 100% E) 50%

Biology & Microbiology

The genes that play a role in the biological clock form part of gene storing structures in the

nucleus known as

a. nucleotides. b. chromosomes. c. tissues. d. proteins

Biology & Microbiology

A paper cut that draws blood must have cut down into at least which layer of the skin?

A) subcutaneous layer B) adipose layer C) epidermis D) dermis

Biology & Microbiology