Epiphytes have ____ that anchor the plants to the surface on which they grow
a. pneumatophores
b. buttress roots
c. prop roots
d. aerial roots
e. root hairs
d
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The unusual ability for ________ being flagellated and motile enables ________
A) ascospores / dispersal in aquatic systems B) ascospores / spreading of pathogens in blood C) zoospores / dispersal in aquatic systems D) zoospores / spreading of pathogens in blood
Which of the following would you predict for an allosteric enzyme? Choose all that apply
A. An increase in the concentration of substrate molecules could activate the enzyme. B. Non-competitive inhibitors would bind at the active site. C. A downstream product later in the pathway could inactivate the enzyme. D. A downstream enzyme later in the pathway could inhibit the allosteric enzyme. E. An allosteric inhibitor could cause a conformational change in the enzyme decreasing its activity.
Genetic engineering started with ____
a. bacteria b. viruses c. fungi d. plants e. animals
Safety considerations in the Microbiology laboratory are crucial for protecting personnel. However, it is also important to think about “protecting” the microorganisms in the experiment that you are performing and not contaminating your culture. Lab workers who are carriers, or who are sick, can contaminate cultures. A pure culture could also be contaminated with another lab strain. What precautions must be taken to prevent contamination of a pure culture?
A) Use of gloves, disinfecting gloves between handling cultures, handling cultures only in a biosafety cabinet, and using lab materials for only 2-3 cultures prior to disposal or autoclaving B) Use of gloves, disinfecting gloves between handling cultures, handling cultures on an open benchtop, use lab materials for only one culture before disposal or autoclaving C) Use of gloves, disinfecting gloves between handling cultures, handling cultures only in a biosafety cabinet, use lab materials for only one culture before disposal or autoclaving