WorksheetsCellular Transport and Biochemistry
Total questions: 10
Worksheet time: 5mins
An enzyme and four different molecules are shown in the diagram. The enzyme would most likely affect reactions involving...
A only
C only
B and D
A and C
Meat tenderizer contains an enzyme that interacts with meat. If meat is coated with tenderizer and then placed in a refrigerator for a short time, how would the enzyme be affected?
It would be broken down
Its activity would slow down.
Its shape would change.
It would no longer act as an enzyme.
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. Which statement best summarizes the activity of the catalase shown in the graph?
the enzyme works best from 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
Substances X and Y are examples of which kind of molecule?
simple sugar
amino acid
fat
hormone
Osmosis is the movement of _____ across a membrane.
food
oxygen
lipids
water
This cell organelle helps organisms maintain homeostasis by controlling what substances may enter or leave cells.
vacuole
cell membrane
cell wall
nucleus
When most proteins, fats, and carbohydrates are digested completely, they are converted to end products that
are soluble and can easily pass through cell membranes
contain long chains of amino acids and fat acids
contain atoms of carbon, hydrogen, oxygen, and nitrogen
are a direct result of dehydration synthesis
A biologist observed a plant cell in a drop of water as shown in diagram A. The biologist added a 10% salt solution to the slide and observed the cell as shown in diagram B.
The change in appearance of the cell resulted from
more salt moving out of the cell than into the cell
more salt moving into the cell than out of the cell
more water moving into the cell than out of the cell
more water moving out of the cell than into the cell
