Chromosomes are duplicated during which phase of the cell cycle?

a. M
b. D
c. G1
d. G2
e. S


e

Biology & Microbiology

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In developing his classification, Linnaeus focused on

a. chromosomal anatomy. b. morphology. c. physiology. d. behavioral traits. e. molecular sequences.

Biology & Microbiology

Young birds see objects flying overhead and respond by crouching down into the nest and remaining still. Over time some objects become familiar and the young birds do not crouch down. What is this type of learning? 

A. sensitization B. associative learning C. operant conditioning D. habituation E. Pavlovian conditioning

Biology & Microbiology

The carbonic acid and bicarbonate buffer in blood is extremely important to help maintain homeostasis. What would happen to the pH of the blood if bicarbonate were removed?

A. Removing bicarbonate from the blood would not affect the pH. B. Removing bicarbonate from the blood would increase the pH. C. Removing bicarbonate from the blood would decrease the pH.

Biology & Microbiology

The main storehouse for substances in sedimentary cycles is ____

a. oceans b. air c. Earth’s crust d. fresh water e. sand

Biology & Microbiology