Which of the following factors influence enzyme activity? Select all that apply. A)

time of day

B)

whether the reaction is exothermic or endothermic

C)

temperature

D)

pH

E)

the activation energy

How to tell the difference between diffusion and osmosis

What is the sequence of events in the transmission of an impulse through the heart muscle? a. av node b. av bundle c. sa node d. through the atria e. through the ventricles f: bundle branches g: purkinje fibers?

To allow communication, neurons A) are physically connected, allowing electrical impulses to travel across neurons. B) send chemical messages across small gaps between neurons. C) send electric sparks into the surrounding conductive fluid.

Which of these changes to a modern lifestyle would promote the development of more-sustainable practices in the world food system? A. Eating more processed foods B. Buying fresh fruit all year long C. Switching from chicken to beef D.

Sequences that contain information about the stability of a transcript are found in the

Which can disrupt the cell cycle? a. mutation b. G0 phase c. replication d. cancer

The green color of tree leaves is due to green light energy reflected from

A student used the hemoglobin data to conclude that mice and shrews are more closely related than are mice and humans or shrews and humans. Was the student correct?

Which statement correctly compares nucleic acids and carbohydrates?.

Nuclear energy is a cleaner fuel compared to fossil fuels. What is a cost factor that needs to be considered when building a nuclear power plant?