What is the name of a calcium-binding protein that acts in conjunction with calcium to bring about the responses associated with cytoplasmic rises in calcium ion concentration?

a) modulocalcin
b) calmodulin
c) calcarian
d) calpectin
e) callistin


Ans: b) calmodulin

Biology & Microbiology

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Monkeys in Africa and Asia most recently evolved from ____

a. a different common ancestor than monkeys in South America b. a shared common ancestor with monkeys in South America c. multiple common ancestors d. different common ancestors than one another e. a common ancestor on a neighboring island

Biology & Microbiology

According to the cohesion-tension mechanism of water transport, which of the following DOES NOT

contribute to the flow of the xylem sap?

a. hydrogen bonds between water molecules b. adhesion of water molecules to the xylem vessel walls c. evaporation of water from the leaves d. water potential in leaf cells below that of the leaf xylem e. root pressure

Biology & Microbiology

A gene is said to be poised if it

a. is inactive. b. has an assembled basal apparatus but requires a second signal for activation. c. has a partially assembled basal apparatus. d. is active. e. is prevented from being expressed by chromatin structure.

Biology & Microbiology

Translocation occurs through the pholem.

True or False?

Biology & Microbiology