Why does DNA need to replicate?

9. Animal cells are more interesting than plant cells. is this fact or opinion?

What is the approximate astronomical distance in AUs between the Sun and Neptune, the furthest planet from the Sun? A. 0.6 B. 5 C. 30 D. 150

How does Carbon cycle through earths systems?

The logistic model effectively has two components: the original exponential term (rN) and a second term (1 - N/K). What is the function of the second term in this model?

The table below identifies three classes of genes that affect the cell cycle. Gene class Gene activity proto-oncogenes regulate progresses though the normal cell cycle oncogenes cause uncontrolled cell cycle progression tumor suppressor genes

A scientist is observing elephants in Asia. He notices that a specific species of moth lands on the faces of the elephants. On closer observation, he sees that the moths irritate the eyes of the elephants and then drink the tears that emerge.

How can hypotheses best be tested? A. by asking questions B. through experimentation C. by forming an opinion D. through technology

What are the four types of lipids?

Describe one niche in the ecosystem.

Tissues are made of a grouping of cells. a. True b. False