Skin cells, blood cells, and other cell types that are continually replaced arise from:
a. adult stem cells
b. embryonic stem cells
c. induced pluripotent stem cells
d. differentiated cells of the same tissue type
e. gamete cells
a
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The method of nucleotide sequence determination that utilizes dideoxynucleotides was developed by ________.
Fill in the blank(s) with the appropriate word(s).
Each of the following is an endoplasmic reticulum function except
A) addition of carbohydrate to proteins to make glycoproteins. B) peptide folding. C) the assembly of multimeric proteins. D) the export of protein that cannot be folded into the cytoplasm for destruction. E) All are endoplasmic reticulum functions.
You are a veterinarian working for the San Diego Zoo. Today, you are performing an autopsy on a 22.7-gram frog and a 21.2-gram lizard, both of which appear to have died of a respiratory infection
Why are you not surprised to find that the lungs of the lizard have a larger internal surface area than those of the frog? A) The lizard is larger than the frog. B) Lizards have a higher metabolic rate than frogs. C) Lizards lay shelled eggs on land, whereas frogs lay jelly-like eggs in water. D) Lizards have dry, scaly skin, whereas frogs have thin, moist skin. E) Lizards are more susceptible than frogs to atmospheric pollutants.
Bands of connective tissue that help muscles attach to bones are termed ________
A) ligaments B) fibrocartilage C) cartilage D) tendons