Which of the following groups includes protists that reside within the cells of corals?
A) brown algae
B) diatoms
C) dinoflagellates
D) ciliates
Answer: C
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A bowl of sugar water is very stable. However, cells can rapidly break down sugar into carbon dioxide and water. What is the best explanation for this observation?
A. Glucose becomes more chemically reactive inside a cell. B. The water is activated by the presence of living cells. C. Enzymes in the cell catalyze the breakdown of glucose. D. Living cells make the water warmer, speeding up the reaction. E. Breakdown of glucose has a negative delta G outside of cells, but a positive delta G inside cells. F. Cells use energy to break down glucose.
Which of the following describes the focus of Mendel’s work in genetics?
a. inherited traits that appeared to be a blending of two genes b. inherited traits with distinct, distinguishable patterns c. inherited traits that were no longer recessive d. inherited traits with only minor differences
Which of the following statements about vitamins is false?
a. Water-soluble vitamins include vitamin C. b. Taking too many vitamins, particularly fat-soluble vitamins, can be harmful. c. Fat-soluble vitamins include vitamin B2. d. Water-soluble vitamins, if consumed in excessive amounts, will be excreted in the urine. e. Water-soluble vitamins are picked up by individual cells from capillary beds.
When you hear, the ________ vibrates. I) eardrum II) hammer III) stirrup
A) I B) II C) III D) I, II, and III