Which trait is least likelyto be shared between green algae and land plants?
a. presence of stomata
b. chloroplasts with chlorophyll a
c. cellulose in their cell walls
d. store energy captured during photosynthesis as starch
e. chloroplasts with chlorophyll b
ANSWER: a
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Treating a solution from S strain Streptococcus pneumoniae with an enzyme that destroys would prevent it from transforming the R strain of bacteria into a form that would cause pneumonia in mice.
A. proteins or lipids B. lipids C. DNA or proteins D. proteins E. DNA
A —COOH group is a(n) _____ group
a. carboxyl b. hydroxyl c. amino d. methyl e. carbonyl
Any response of a plant to the relative lengths of light and darkness is referred to as:
a. gravitropism. b. photoperiodism. c. phototropism. d. thigmotropism. e. thigmomorphogenesis.
Which of the following fields of study and its example are NOT correctly matched?
a. Parasitology—study of HIV b. Mycology—study of athlete's foot c. Immunology—study of vaccines d. Bacteriology—study of E. coli O157:H7