Biology 20-21 2nd Six Weeks

Molecules move across cell membranes. What kind of transport needs ATP energy?

• active transport

• passive transport

• diffusion

• facilitated diffusion

Water moves into and out of cell membranes to reach equilibrium with the surrounding environment. What is the movement of water called?

• active transport

• passive transport

• osmosis

• facilitated diffusion

If a carrier protein is helping to move a molecule across a membrane WITHOUT the use of ATP energy, what is this called?

• osmosis

• active transport

• facilitated diffusion

What structure makes plant cells so strong and well-shaped?

• cell membrane

• nucleus

• big vacuole

• cell wall

CAA ATG CGT AAC. These four groups of letters represent adenine, thymine, guanine and cytosine. What are these groups of nitrogen bases called?

• genes

• RNA

• codons

• trios

DNA has a twisted ladder or spiral shape. What is the scientific term for this shape?

• double helix

• double ladder

• twisteroo

What is the main function of DNA?

• To store glucose sugars

• To store information

• To repair cell damage

• To reproduce

What is the building block of DNA and RNA called?

• nucleus

• nucleotide

• glucose

• double helix

How is genetic diversity impacted by a mutation? Remember, a mutation is a change in the DNA code.

• diversity increases

• diversity decreases

• no change

When is DNA replicated before cell division?

• mitosis

• Synthesis phase

• cytokinesis

• apoptosis