Match the following prefixes with their relationship to the standard base unit (g, m, L):
Centi
A) 1/100
B) 1/1,000,000
C) 1000
D) 1/1000
A) 1/100
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A steady state means that there is no variation in the functioning of a system
a. True, all systems must maintain homeostasis. b. False, there are a range of variables over which a system functions. c. True, there is a single optimal conditioning for body functions. d. False, most systems do not maintain homeostasis but rely on hormones.
A major genetic cause of emphysema is deficiency of the protein alpha-1 anti-trypsin (AAT). AAT is an enzyme that inhibits the activity of another protein. What protein is most likely the normally-inhibited target of AAT?
A. elastin-specific protease B. hemocyanin C. hemoglobin D. collagen E. myoglobin F. carbonic anhydrase Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about emphysema? What other information is related to the question? Choose Answer Given what you now know, what information 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?
Answer the following statements true (T) or false (F)
1. Cephalopods have a ring structure in their skin that secretes mucus to bind mating individuals and forms a protective cocoon for their eggs. 2. Echinoderms have centralized nervous control at the center of their bodies. 3. Monotremes are classified as reptiles because they lay leathery eggs. 4. Male monotremes and eutherians possess mammary glands. 5. Mastication is a kind of physical digestion.
Which is a characteristic of a plasmid used as a cloning vector? (Select all that apply.)
A) contains a selectable marker B) contains an origin of replication C) has several unique recognition sites for restriction enzymes D) integrates into the host chromosome E) can hold an insert of up to 300 kb