What step in DNA replication precedes the pairing of complementary bases?

a. polymerization of DNA.

b. separation of the two strands.

c. formation of the histone core.

d. joining of the two strands.

e. mitotic division.

Which body segment of an insect supports the legs and wings?

What is the common symptom of hypothrdism?

Which factor is not a shared feature of signaling by mammalian vision gustatory receptor pathways?

Which of the following describes a properly controlled experiment? A. The weight of fifteen turtles is determined every day for three weeks. B. Twenty mice are given orange juice, while twenty plants are given water. C.

The fly species drosophila santomea is found only on a single small island. thus, this fly is considered to be

What can lead to new characteristic in an organism? a. Spontaneous generation b. Mutations c. Enzymes d. Mitosis

Under certain conditions, when a mature plant or seed becomes or remains inactive, it is said to be

How does the amount of energy available change as you move from one trophic level to

Question 3 What is the asthenosphere? The tectonic plates The Earth's crust The lower mantle The molten part of the upper mantle.

What is the semi-solid food found inside the stomach during digestion called?