STAAR EOC Review

The graph shows how enzymes affect reactions in cells. Which statement best summarizes the information shown in the graph?

• Enzymes increase the energy of the reactants.

• Enzymes decrease the energy level of the products.

• Enzyme decrease the activation energy of the reaction.

• Enzymes reverse the direction of the reaction.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A cell _______ in a hypertonic solution because water moves _______ the cell.

• shrinks; out

• shrinks; in

• swells; out

• swells; in

Tags

NGSS.MS-LS1-2

Which of the following follows the concentration gradient (high to low) but requires a transport protein?

• diffusion

• osmosis

• facilitated diffusion

• active transport

Which of the following converts food into energy for the cell?

• vacuole

• mitochondria

• cytoplasm

• cell membrane

Which of the following is correct about the events of the cell cycle?

• Little happens during the G₁ and G₂ phases of the cell cycle.

• DNA replicates during the S phase of interphase.

• Mitosis is usually the longest phase of the cell cycle when the cell is growing.

• Interphase consists of G₁, S, G2 phase and mitosis

Answer explanation

The correct statement is that DNA replicates during the S phase of interphase.

This process removes carbon dioxide from the atmosphere and produces oxygen and glucose.

• Chloroplast

• Mitochondria

• Photosynthesis

• Cellular Respiration

Answer explanation

Photosynthesis is the process that removes carbon dioxide from the atmosphere and produces oxygen and glucose.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Cell have several mechanisms for regulating their internal environments. Which of these mechanisms involved in maintaining homeostasis requires energy?

• osmosis

• diffusion

• active transport

• passive transport

Answer explanation

Active transport is the mechanism involved in maintaining homeostasis that requires energy, unlike osmosis, diffusion, and passive transport.

Tags

NGSS.HS-LS1-3

8 A cellular process is shown. Which statement best describes the significance of this process?

• The process allows organisms to grow and heal.

• The process produces clones of the parent organism.

• The process copies DNA before cell division

• The process creates genetic variation in the resulting cells

Answer explanation

The process creates genetic variation in the resulting cells

Tags

B.6(G)

How did the enzyme affect the reaction?

• Increased the activation energy

• Increase the energy change

• Lowered the energy change

• Lowered the activation energy

Answer explanation

The enzyme lowered the activation energy required for the reaction to occur, making it easier for the reaction to proceed.

Tags

NGSS.HS-PS1-4

According to the information in the given chart, what type of cell is cell X?

• bacteria cell

• prokaryotic cell

• plant cell

• animal cell

Answer explanation

Cell X is an animal cell based on Melinda's observation recorded on the chart.

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2