Proteins are composed of what smaller building blocks?

• amino acids
• nucleic acids
• fatty acids
• nucleotides

Tags

NGSS.HS-LS1-6

Based on the graph, what is the optimum temperature for this enzyme? 

• 15 C
• 40 C
• 30 C

Tags

NGSS.HS-PS1-5

What happens when enzymes are heated to a high temperature?

• The enzymes die.
• The shapes of the enzyme are altered or denatured
• The enzymes' amino acid sequence changes.
• The enzymes remain the same

Enzymes are

• nucleic acids
• proteins
• lipids
• carbohydrates

Tags

NGSS.HS-LS1-6

Which is the strongest acid?

• ph of 1

• ph of 4

• ph of 7

• ph of 9

DNA and RNA are two types of

• proteins
• lipids
• carbohydrates
• nucleic acids

Which is the initial color of starch indicator solution?

• blue

• yellow/brownish orange

• amber

• blue-black

In our diffusion lab, what happened to the “cell” that contained starch solution after 20 minutes?

• The contents of the dialysis tube turned blue-black.

• The liquid in the beaker would turn blue-black.

• The dialysis tube would burst.

• There would be no change.

Tags

NGSS.MS-PS1-2

When a cell shrinks in size, what type of solution was added to it?

• Salt solution

• Tap water

• distilled water

• iodine solution

Tags

NGSS.MS-LS1-2

NGSS.MS-PS1-2

Cell membranes are said to be selectively permeable. Which statement best explains what selectively permeable means?

• The cell membrane prevents any harmful substance from entering the cell.
• The cell membrane lets certain substances enter the cell and keeps certain substances out of the cell.
• The cell membrane allows only large molecules to diffuse into the cell.
• The cell membrane has pores that let only water and glucose into the cell and carbon dioxide out.