According to the data, the crabs at 23.5oC have greater oxygen consumption than at 8.5oC. This is most likely explained by which of the following statements?
A. The crabs at 8.5oC have a higher rate of respiration so less oxygen is consumed.
B. The crabs at 23.5oC have a lower metabolic rate than the crabs at 8.5o
Crabs use their surroundings to warm their internal temperature; once warm, their metabolic rate increased.
D. Because crabs are cold blooded, they use their oxygen to increase their body temperature resulting in a lower respiration rate at 8.5o
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During the cellular respiration experiment, soda lime was placed in the respiration chamber. What is the purpose of the soda lime?
As oxygen is consumed, carbon dioxide is released by the animal. Soda lime removed the CO2 so that the amount of oxygen used can be measured.
B. Soda lime is necessary for the animals to produce ATP during cellular respiration. Without the ATP, the oxygen consumed could not be measured.
C. Glucose is the reactant that starts cellular respiration. Soda lime provides the carbon found in glucose.
D. Soda lime acts as an integral protein allowing the oxygen to pass through the cell membrane so that it can be measured.
Consider the bag containing 1.0 M sucrose solution that was placed in the beaker of 0.6 M sucrose. All of the following are expected to occur except
A. There is a net movement of water from the hypotonic region to the hypertonic region.
B. There is a net movement of solute from the hypotonic region to the hypertonic region.
C. The dialysis bag will gain mass as the experiment progresses.
D. Water will move from a region of higher concentration of water to a region of lower concentration of water.
Eukaryote cells are highly specialized and compartmentalized due to the presence of membrane bound organelles. Which of the following statements supports the claim that compartmentalization of cellular tasks aids in efficient cellular function?
A. By separating competing chemical reactions from one another, cooperation between organelles becomes more difficult.
B. Compartmentalizing the cell's tasks prevents the cell from depleting necessary resources for completing those tasks.
C. By separating competing chemical reactions from one another, cellular function is maximized for efficiency.
D. Localizing the cell's tasks to individual compartments prevents cells from carrying out competing simultaneous metabolic processes.
The groups that consists of oxygen and carbon joined by a double bond is called the carbonyl group. If the carbonyl group is at the end of the molecular skeleton it is called a(n)
A. aldehyde.
B. keytone.
C. alcohol.
D. amino
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