STAAR EOC

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

Some students used vinegar to dissolve a way the shells of three eggs and used these eggs as models of human red blood cells. The students observed the changes in the eggs when they were placed in different solutions. Which statement best describes the role of the cell membrane in this model?

• The cell membrane is an impermeable barrier that prevents water from entering the cell.

• The cell membrane allows solutions to enter the cell, which causes the cell to shrink.

• The cell membrane allows water to enter and leave the cell.

• The cell membrane removes solutes from the environment.

Tags

NGSS.MS-LS1-2

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

• shrinks; out

• shrinks; in

• swells; out

• swells; in

Tags

NGSS.MS-LS1-1

The process by which the genetic code of DNA is copied into a strand of RNA is called

• translation

• transcription

• transformation

• replication

How would the DNA sequence GCTATA be transcribed to mRNA?

• GCUAUA

• CGATAT

• CGAUAU

• GCUTUT

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

• diffusion

• osmosis

• facilitated diffusion

• active transport

Q1. What is the process of cell division called?

• A) Cytokinesis

• B) Interphase

• C) Anaphase

• D) Metaphase

This biomolecule is composed of carbon, hydrogen and oxygen. It can be found in foods such as bread, pasta, potatoes, and any other starchy food. 

• Protein

• lipids

• carbohydrates

• nucleic acid

This biomolecule is a fancy word for fat. 

• lipid

• nucleic acid

• protein

• carbohydrate

What is the primary function of the mitochondria in eukaryotic cells?

• Energy production through cellular respiration

• Protein synthesis

• Photosynthesis

• Genetic material storage

Tags

NGSS.HS-LS1-7