Plasma cells
A. are derived from T-lymphocytes.
B. function in blood clotting.
C. function in cell-mediated immunity.
D. produce and secrete antibodies.
E. All of these choices are correct.
Answer: D
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Recent research has suggested that some pseudogenes and non-protein-coding DNA code for RNAs that affect transcription of coding regions. This suggests that
A. pseudogenes code for proteins. B. non-protein-coding DNA has no function. C. non-protein-coding DNA may regulate gene expression. D. pseudogenes have no function. 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 already know about non-protein-coding DNA? Consider Possibilities · Consider the different answer options. Which can you rule out? 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?
Which of the following implies movement with regard for direction?
a. taxis only b. kinesis only
c. migration only d. taxis and migration only e. taxis, migration, and kinesis
The voice box is also known as the ____
a. pharynx b. trachea c. bronchus d. larynx e. epiglottis
Which organelle is not found in both plant and animal cells?
A) nucleus B) peroxisome C) mitochondrion D) smooth endoplasmic reticulum E) central vacuole