What determines the structure of a protein?
A) the number of amino acids it contains
B) the sequence of the amino acids it contains
C) the function of the nucleic acids it contains
D) the number of fatty acids it contains
B
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One turn of the Calvin cycle fixes a molecule of CO2 gas and is driven by 3 molecules of ATP and 2 molecules of NADPH from the light reactions. Which of the following is true?
A. It takes 3 turns of the cycle, 9 molecules of ATP, and 6 molecules of NADPH to make one molecule of glucose. B. It takes 6 turns of the cycle, 18 molecules of ATP, and 12 molecules of NADPH to make a glucose molecule. C. The cycle must be carried out in the dark. D. The cycle is exergonic.
Mammals have a ________ heart
Fill in the blank(s) with correct word
Smoker's cough results from damage to the external structure of lung cells by tobacco smoke. What part of the cell would you predict is damaged?
A) the mitochondria B) plasmodesmata C) the Golgi complex D) the lysosome E) cilia
What is the difference between microevolution and macroevolution?
A) Microevolution deals with microscopic organisms, whereas macroevolution deals with larger ones. B) Microevolution describes changes within a population over a short period of time, whereas macroevolution describes larger changes such as the formation of new species over longer periods of time. C) Microevolution describes what happens in small populations, whereas macroevolution deals with large populations. D) Microevolution is hypothetical because changes are too small to be observed, whereas macroevolution is detectable.