All members of a cohort are the same _____
a. sex c. age
b. size d. weight
C
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Jaws evolved during the Silurian period by modification of _____ in a jawless ancestor
1.the cartilaginous skeleton 2.the second pair of gill arches 3.gill slit support structures 4.the spiracle
If you count 24 chromosomes in a body cell, how many chromosomes would you expect to see in the sperm cell of the organism?
1.6 2.12 3.24 4.30
Ethidium bromide
a. terminates the formation of polynucleotide chains. b. is used to detect a protein of interest. c. is a nonspecific stain for nucleic acids. d. is a nonspecific nuclease. e. allows DNA polymerase to be thermostable.
Which of the following statements about vesicle budding from the Golgi is false?
(a) Clathrin molecules are important for binding to and selecting cargoes for transport. (b) Adaptins interact with clathrin. (c) Once vesicle budding occurs, clathrin molecules are released from the vesicle. (d) Clathrin molecules act at the cytosolic surface of the Golgi membrane.