A particular characteristic of disease-causing Streptococcus is
A. catalase production.
B. beta-hemolysis.
C. lactic acid production.
D. growth at refrigerator temperatures.
B
You might also like to view...
Which of the following is NOT a product of the light reaction?
A. NADPH B. ATP C. oxygen D. carbon dioxide E. energy intermediates
In the ABC model of flower development in Arabidopsis thaliana, sepals form when which gene(s) is/are switched
on? a. A only b. A and B c. B and C d. C only e. A and B and C
An organism has been found to contain a defective form of photolyase. What function might be impaired in this organism?
A. Recognition of damaged DNA by the UvrABC complex B. Repair of DNA damage caused by UV light C. Stabilization of single-stranded DNA during DNA replication D. Lengthening of the tips of chromosomes
Review the discussion of evolution and the Investigating Life feature. Which of the following statements is/are most likely true?
a. Moths that could smell the nectar at the bottom of the orchid saw the need for a longer tongue, so they grew one that reached the nectar and passed on the longer tongue to their offspring b. Moths that could smell the nectar at the bottom of the orchid mated with females that had longer tongues so that their offspring might have a chance to reach the nectar c. At least one moth species has always been able to reach the nectar of the orchid. d. Moths with longer tongues are more likely to have access to the orchid nectar and are therefore more likely to survive to reproduction e. Orchds with deeper nectaries are more lkely to have moths rub against their polen, and are therefore more likey to reproduce, than orchids with shallow nectaries.