Review: During transcription, _______ , which is a _____, makes a mRNA copy of the DNA.
A. RNA polymerase; lipid
B. RNA polymerase; enzyme
C. Ribosomes; protein
D. Nucleus; enzyme
Answer: B. RNA polymerase; enzyme
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A nonprofit conservation organization receives a sizeable donation and decides to purchase several thousand acres of 'high desert' in southern California. This particular type of desert has an intermediate level of species diversity and few unique species. However, much of the original areas of high desert have been converted to suburban housing and shopping. The decision by the nonprofit to preserve this area was most likely based upon what conservation strategy?
A. Conservation of endemic species hotspots B. Conservation of representative habitats C. Conservation of megadiverse areas D. Conservation of single species
You put a solution of sucrose into a bag of dialysis tubing, which is permeable to water but not to sucrose. You then put this bag into a beaker of water. An hour later, you observe that the bag has swelled due to
A. the high osmolarity of the surrounding water. B. passive transport of sucrose molecules. C. the osmotic pressure of the sucrose solution. D. the pressure exerted on the bag by the surrounding water. E. active transport of water molecules. 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 the movement of water? 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?
The neutral subatomic particle is
a. the neutron. b. the proton. c. the electron. d. both the electron and the proton. e. both the neutron and the electron
The protein-coding gene sequences in humans and chimpanzees
A. are identical. B. are vastly different. C. are more than 99% alike. D. are about 50% alike. E. are about 80% alike.