When a red stain is added to a culture containing both living and dead cells, only the dead cells take

Transcribed Image Text: 2.
When a red stain is added to a culture containing both living and dead cells, only the dead cells take
up the stain. Which structure prevents the stain entering the living cells?
A. cell membrane
B. cell wall
C. cytoplasm
D. vacuole
3.
Which of the following have both cytoplasm and cell walls?
A. liver cells
B. red blood cells
C. root hair cells
D. xylem vessels
4.
The dire wolf is an extinct species of wolf. What is the correct scientific name for this wolf?
A. Canis Dirus
B. canis dirus
C. Canis dirus
D. canis Dirus
5.
Which shows an organism that has been named using the binomial system?
A. Bacterium
B. Flowering plant
C. HIV
D. Home sapiens

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