Which of the following is NOT a characteristic of osmosis?
a. water flows from low solute concentration to high solute concentration
b. occurs across a membrane freely permeable to water
c. occurs across a membrane freely permeable to solutes
d. passive process
Ans: c. occurs across a membrane freely permeable to solutes
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The most common form of gene therapy involves inserting a normal gene into cells that contain a defective version of the gene. In order to use gene therapy to prevent a man from passing a defective gene on to future generations, you should try to insert normal copies of the gene into
A. blood cells. B. germ-line cells. C. somatic cells in the testes. D. bone marrow cells. 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 fertilization? 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?
Members of one major class of the lineage ____ are called tunicates or sea squirts. They have
tadpolelike larvae, but their sessile adult form is usually encased in a leathery "tunic."
a. Petromyzontoidea b. Placodermi c. Cephalochordata d. Urochordata e. Myxinoidea
A patient excretes a large volume of very dilute urine on a continuing basis. This is most likely due to:
a. excessive ADH secretion b. absence of ADH c. overproduction of aldosterone d. increased blood pressure e. increased renin secretion
The most accurate description of an organism with genotype AaBb is
A. homozygous dominant. B. heterozygous. C. heterozygous dominant. D. homozygous recessive. E. heterozygous recessive.