Contractile vacuoles maintain osmotic balance by ________.
A. expelling water from the cell
B. sensing surrounding moisture levels
C. filtering ions
D. drawing water into the cell
Answer: A
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Which of the following reactions is a hydrolysis reaction?
A. A + B + H2O ® C B. A ® B + C+ H2O C. A + B ® C + H2O D. A + H2O ® B + C Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you know about hydrolysis reactions? How does it relate to the question? Consider Possibilities · What other information is related to the question? Which information is most useful? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
The chelicerates (select all that apply)
A. include spiders, scorpions, and their relatives. B. are known for their venoms. C. were among the first animals to invade land around 400 million years ago. D. have pincer-like claws, antennae, and wings. E. are ecologically diverse, particularly in their food habits, with different groups specializing on a wide variety of plant and animal foods.
When individuals have mitochondrial disorders, why are the skeletal and heart muscles and the brain most often affected?
a. They are the most important organs. b. They have the highest energy needs. c. They are generally very fragile. d. They have fewer mitochondria in the cell. e. They are the most complex organs.
Why do some viruses mutate faster than others?
A) They are usually smaller. B) They are usually larger. C) They usually have RNA genomes. D) They usually have DNA genomes.