Which type of substrate is most likely to contain fossils?
a. All of these choices
b. Shale
c. Sedimentary rock
d. Sandstone
e. Mudstone
a
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The RNA World hypothesis isdirectly supported by all the following except:
A. catalytic RNAs. B. ribozymes showing diverse function. C. ribosome structure. D. micelle to vesicle formation.
Who is credited with developing a vaccine against chicken cholera?
A. Jenner B. Lister C. Pasteur D. Koch
Which of the following predictions could you make about a cell in which the HP1 protein was disabled?
A) Methylation of DNA would increase. B) All of the cell's chromosomes would be completely condensed into heterochromatin. C) Histone methyltransferase would bind to chromatin more easily. D) Heterochromatin would not be formed.
The nervous system controls the contraction of in the wall of the bronchioles, thereby adjusting airflow in response to metabolic demands.
A. autonomic; skeletal muscle B. autonomic; smooth muscle C. somatic; skeletal muscle D. somatic; smooth muscle E. autonomic; cartilage