Which of the following is NOT true? Both chloroplasts and mitochondria _____
A) have their own DNA
B) have multiple membranes
C) are part of the endomembrane system
D) are capable of reproducing themselves
C
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Which of the following is true of protein-based plant chemical defenses?
A. Plants and animals use the same 20 amino acids to construct proteins, but some plants have additional amino acids. B. Plants use the additional amino acids in their proteins, but animals that ingest them cannot. C. Insect herbivores that consume nonprotein amino acids grow more quickly and live longer. D. Plants can produce protease inhibitors, which bind to the active site of enzymes that break down proteins and enhance their activity. E. Insects that feed on plants with protease inhibitors have increased growth rates.
Which of the following epithelial tissues secretes mucous and is dense with cilia?
A. cuboidal B. squamous C. simple D. stratified E. pseudostratified columnar
Glucose-6-phosphate dehydrogenase deficiency (G6PD) is inherited as a recessive allele of an X-linked gene in humans. A woman whose father suffered from G6PD marries a normal man
(a) What proportion of their sons is expected to be G6PD? (b) If the husband was not normal but was G6PD deficient, would you change your answer in part (a)? A) (a) 100%; (b) no B) (a) 1/2; (b) yes C) (a) 1/2; (b) no D) (a) zero; (b) no
Which of the following characteristics does not apply to water?
A) all three atoms in the water molecule ready form hydrogen bonds B) Water is an excellent solvent C) The water molecule is asymmetric D) The water molecule readily forms hydrophobic interactions E) The covalent bonds in water are strongly polarized