Acetylated histone tail lysines are associated with chromatin that is
A) open.
B) closed.
C) transcriptionally inactive.
D) newly replicated.
E) about to replicate.
A) open.
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________ occurs as a result of cartilage wearing down over the course of a lifetime
a. Sprains b. Dislocations c. Rheumatoid arthritis d. Strains e. Osteoarthritis
Why are the leading causes of death in high-income countries heart disease, stroke, and cancer, while in low-income countries infectious diseases are the leading causes of death?
A. There are genetic differences between populations. B. The population density in high-income countries is clustered. C. Access to sanitation, vaccines, and antibiotics is greater in high-income countries. D. The population density in high-income countries is larger. E. The ecological footprint in high-income countries is larger.
A lac repressor turns off the expression of the lac genes by
a. Binding to the promoter b. DNA polymerase c. Binding to the operator d. Binding to the lac genes
The rate of energy consumption by an animal is called
A) metabolism. B) digestion. C) metabolic rate. D) glycolysis.