ch 3&4 review

Which part of the cell cycle involves DNA replication?

• G1

• G2

• S

• M

What occurs during anaphase?

• DNA condenses

• Chromosomes align

• Chromosomes separate

• Nuclear envelope reforms

The control center of the cell is the:

• Nucleolus

• Ribosome

• Cytoplasm

• Nucleus

The nuclear envelope:

• Synthesizes proteins

• Stores ATP

• Surrounds the nucleus

• Forms chromosomes

Which is NOT part of the plasma membrane?

• Cholesterol

• Microtubules

• Phospholipids

• Proteins

Amphipathic molecules have:

• No charge

• Only hydrophobic parts

• Both hydrophilic and hydrophobic parts

• Only polar heads

What does the nucleolus produce?

• DNA

• Ribosomes

• Lipids

• ATP

Integral proteins:

• Are only on the surface

• Make ATP

• Are embedded in the membrane

• Are carbohydrates

Which process requires energy (ATP)?

• Osmosis

• Diffusion

• Facilitated diffusion

• Active transport

The Na+/K+ pump moves:

• 2 Na+ in, 3 K+ out

• 3 Na+ out, 2 K+ in

• 3 K+ in, 2 Na+ out

• 2 K+ out, 3 Na+ in