During the course of muscle contraction the potential energy stored in ATP is transferred to potential energy stored in _____.
A. the myosin head
B. the myosin tail
C. the thin filament
D. actin
E. the Z line
Answer: A. the myosin head
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The citric acid cycle is located on the inner membrane of the mitochondria
a. true b. false
Which of the following is false regarding an antigen?
a. It can lead to the generation of an antibody. b. It identifies a pathogen as “foreign” to the body. c. It can be a protein. d. It passes directly between the plasma membranes of the pathogen and macrophage. e. It forms complexes with the MHC markers.
To create a DNA profile from scarce quantities of DNA, such as a fossil or a single hair, the ____________________
technique is necessary to obtain enough DNA for analysis. Fill in the blank(s) with the appropriate word(s).
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