Biomolecules & Enzyme Regents Review

In order to enter cells and be useful to the body,

starch must be

• absorbed through the skin

• broken down into fats and water

• digested into simple sugars

• digested into simple sugars

Tags

NGSS.MS-LS1-7

Which group consists entirely of organic molecules?

• protein, oxygen, fat

• protein, starch, fat

• water, carbon dioxide, oxygen

• water, starch, protein

Tags

NGSS.HS-LS1-6

Even though human proteins are synthesized

from only 20 different amino acids, there are

thousands of different proteins found in human

cells. This great variety of proteins is possible

because the

• size of a specific amino acid can vary within

  a protein

• chemical composition of a specific amino

  acid can vary

• sequence and number of amino acids can be

  different in each protein

• same amino acid can have many different

  properties

In living cells, chemical processes, such as synthesis,

all require the action of

• specialized antibiotics

• hormones

• salts

• biological catalysts

The hormone adrenaline can affect only cells with

• appropriately shaped receptors

• the appropriate antibodies

• ribosomes that produce adrenaline

• genes that break down adrenaline

The diagram below represents the region

between two nerve cells. Cell A releases a

chemical that travels to and binds with structure

X on cell B.

Structure X most likely represents

• a receptor molecule

• an inorganic substance

• a ribosome

• an antibody

Chemicals that help chemical reactions occur at

faster rates in living organisms are known as

• biotic resources

• organic catalysts

• simple sugars

• oxygen molecules

Tags

NGSS.HS-PS1-5

The shape of a protein is originally determined

by the

• size of the protein molecule

• location of the protein within the cell

• arrangement of amino acids in the protein

• function the protein must carry out

The graph shows the results of an action

of the enzyme catalase on a piece of meat.

Evidence of enzyme activity is indicated by

bubbles of oxygen.

• The enzyme works better at 10°C than at

  50°C.

• The enzyme works better at 5°C than at

  65°C.

• The enzyme works better at 35°C than at

  either temperature extreme.

• The enzyme works at the same level in all

  environments.

Which row in the chart contains correct information concerning synthesis?

• 1

• 2

• 3

• 4

Tags

NGSS.HS-LS1-6