Thursday Do Now

Which best explains why a change in the structure of an enzyme could prevent it from functioning properly?

• The enzyme might lose its ability to store energy.

• The enzyme might no longer fit the shape of its specific substrate.

• The enzyme might produce too much glucose.

• The enzyme might start reacting with lipids instead of proteins.

Which characteristic is shared by both viruses and living cells?

• Ability to reproduce without a host

• Use of organelles for energy production

• Presence of nucleic acids that store genetic information

• Capability to grow and develop over time

During which part of the cell cycle is DNA replicated to ensure that each new cell will have an identical set of genetic instructions?

• G1 phase

• G2 phase

• Mitosis

• S phase

How does the sequence of nitrogen bases in DNA determine an organism’s traits?

• By controlling how glucose is used for energy

• By coding for specific proteins that influence cell function

• By making more DNA during replication

• By regulating blood flow in the circulatory system

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

A student places a plant cell in a solution with a higher salt concentration than the cell’s cytoplasm. After several minutes, the cell membrane pulls away from the cell wall. What does this observation demonstrate about the role of the cell membrane?

• It produces energy during osmosis

• It stores water for later use

• It controls the movement of substances in and out of the cell

• It allows salt to enter the nucleus directly

Tags

NGSS.HS-LS1-3