Test Review: Chemistry of Life

Based on the passage and diagram, what is the main function of the enzyme salivary amylase in the mouth?

• It breaks down starch into glucose monomers

• It converts starch into maltose

• It turns glucose into starch

• It adds water to starch

Human cells break down glucose to release the energy stored in its bonds. Which of these statements is false?

• Large chains of glucose molecules can be broken apart to form other molecules.

• Glucose can be assembled into larger molecules.

• The atoms of glucose molecules can be combined with other elements to form different molecules.

• The atoms in Maltose are not usable if it is broken down further.

Tags

NGSS.HS-LS1-6

NGSS.HS-LS1-7

Amanda gets protein at lunch by eating a chicken sandwich. How can Amanda’s body use the protein in the chicken to build protein in her cells?

• The proteins in the chicken are used directly as proteins in Amanda’s cells.

• The proteins in the chicken are refolded, and then Amanda’s cells can use them.

• The proteins in the chicken are broken down into amino acids, and the DNA in Amanda’s cells uses those amino acids to build human proteins.

• The proteins in the chicken are digested, and the amino acids are changed to human amino acids so Amanda’s DNA can use them to build proteins.

Tags

NGSS.HS-LS1-1

The diagram shows the sequence of reactions that leads to the formation of starch. A student claims that starch is formed from a product of photosynthesis. Which statement supports the student's claim?

• Many glucose molecules bond to form starch.

• Many water molecules bond to form starch.

• ATP molecules are created during the formation of starch.

• ADP molecules are created during the formation of starch.

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

Living things need nitrogen for the synthesis of (a)   .

• carbohydrates

• lipids

• proteins

Tags

NGSS.HS-LS1-6

NGSS.HS-LS1-1

A student claims that glucose acts as a starting material for the production of cellulose, which is an important component of the plant cell wall. The chart lists the student's statements about the claim. Which statement supports the student's claim?

• statement 1

• statement 2

• statement 3

• statement 4

Tags

NGSS.HS-LS1-6

What category of molecules does this monomer belong to?

• carbohydrates

• nucleic acids

• proteins

Which of the following macromolecules builds muscle tissue?

• carbohydrates

• lipids

• proteins

• nucleic acids

Tags

NGSS.HS-LS1-1

Examine the structures of several compounds that are important to living things: glucose, galactose, lactose, and cerebroside. Which elements do all of the compounds share?

• nitrogen, carbon, and oxygen

• nitrogen, carbon, and hydrogen

• carbon, oxygen, and hydrogen

• carbon, oxygen, hydrogen, and nitrogen

Which macromolecule is made up of amino acids?

• proteins

• carbohydrates

• lipids

• nucleic acids

Tags

NGSS.HS-LS1-1