Negative-feedback allows the body to return to what?
a. homeoregulation
b. core body temperature
c. homeostasis
d. stasis
c. homeostasis
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Phosphofructokinase is an allosteric enzyme in the glycolysis pathway. Regulation of glycolysis is directly related to the level of ATP and citrate. If ATP or citrate levels are high, phosphofructokinase will be inhibited
What will happen to this enzyme when ATP levels drop? A. Phosphofructokinase will be inhibited. B. Phosphofructokinase will be activated. C. Metabolism of citrate will be inhibited. D. Metabolism of phospholipids will be activated. E. Metabolism of phospholipids will be inhibited.
Microevolution can be said to have taken place when
a. a population experiences a shift in allele frequencies. b. a mutation occurs in a population. c. several mutations occur in a population. d. a feature of an individual animal changes through use or disuse. e. when a population has different forms of the same gene.
Carbon-12, Carbon-13 and Carbon-14 are examples of:
A. ions B. isomers C. molecules D. isotopes
Which of the following organelles most closely resembles a prokaryotic cell?
A) nucleus B) mitochondrion C) Golgi complex D) vacuole E) cell wall