An experimenter wanted to test the effects of
cigarette smoking on rats. She infused the
cages of 50 rats with cigarette smoke and the
cages of another 50 rats with pure, clean air.
The rats that received the clean air were the
a. experimental group.
b. control group.
c. model group.
d. predictive group.
e. independent group
B
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The nuclear envelope reforms during
a. anaphase. b. metaphase. c. interphase. d. prophase. e. telophase.
What are the three main tissues in a plant?
(a) leaf, root, and stem tissue (b) flower, root hair, and fruit tissue (c) Dermal, vascular, ground tissue (d) Internode, node, and petiole tissue (e) They only have two tissues
What do aquatic groups ranging from foraminifera, to corals, to bivalve mollusks require in order to build their hard parts?
A. Oxalic acid B. Potassium carbonate C. Protein D. Calcium carbonate E. Iron oxide
The theoretical maximum net gain of ATP per molecule of glucose metabolized aerobically in eukaryotes is ________.
A. 2 B. 32 C. 85 D. 38