The primary function of the large intestine is to
A. emulsify fats.
B. reabsorb water and other secretions.
C. absorb food molecules.
D. produce digestive juices.
B. reabsorb water and other secretions.
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In an autosomal dominant disorder such as Huntington's disease, two carrier parents have the probability of passing
the gene onto ____ percent of their children.
a. 0 b. 25 c. 50 d. 75 e. 100
Which statement about endochondral bone development is true?
a. Ossification begins in the diaphysis and later occurs in the epiphyses. b. Bones develop from a noncartilage connective tissue scaffold. c. Most bones of the skull undergo endochondral bone development. d. Only the periosteum undergoes endochondral bone development. e. Osteoclasts are the bone-building cells of endochondral bone development.
A single base substitution mutation is least likely to be deleterious when the base change results in _____
A) a stop codon B) a codon that specifies the same amino acid as the original codon C) an amino acid substitution that alters the tertiary structure of the protein D) an amino acid substitution at the active site of an enzyme
Each of the following events actually occurs. Which case would be included in the definition of sexual reproduction?
A. The female sex cell of a flower develops into a new generation after receiving the male sex cell from the same flower. B. A female sex cell develops into a new individual without fertilization. C. Three new plants develop from three branches cut from a plant and placed in potting soil. D. Twins develop.