Structures & Functions of Living Organisms

Which cell process is illustrated?

• cell division

• cell differentiation

• cell replication

• cell supervision

Tags

NGSS.HS-LS1-4

How does a paramecium survive in freshwater?

• The cell membrane allows the selective absorption of water.

• The cilia on the cell’s surface prevent the entry of excess water.

• The contractile vacuole collects and expels the excess water.

• The nucleus monitors and prevents the entry of water.

Which correctly identifies the type of movement exhibited by Dictyostelium discoideum and the cell structure involved in the movement?

• Cilia; Chemotaxis

• Flagella; Phototaxis

• Contractile vacuoles; phototaxis

• Pseudopodia; Chemotaxis

Which correctly identifies the transport process shown in each model?

• osmosis, diffusion, active transport

• diffusion, osmosis, active transport

• active transport, osmosis, diffusion

• active transport, diffusion, osmosis

Which conclusion does the data support?

• Both distilled water and vinegar are hypotonic environments for de-shelled eggs.

• Both distilled water and vinegar are hypertonic environments for de-shelled eggs.

• Distilled water is a hypertonic environment, and vinegar is a hypotonic environment for de-shelled eggs.

• Distilled water is a hypotonic environment, and vinegar is a hypertonic environment for de-shelled eggs.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

During an experiment, students observe that a protozoan shrinks when its environmental conditions change. Which question is the experiment most likely designed to answer?

• What will be the effect of placing a saltwater protozoan in a solution that is isotonic to its normal environment?

• What will be the effect of placing a saltwater protozoan in a solution that is hypotonic to its normal environment?

• What will be the effect of placing a freshwater protozoan in a solution of salt water?

• What will be the effect of placing a freshwater protozoan in a solution of pure water?

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-4

Leigh syndrome is a rare genetic disorder that is triggered by an infant’s first viral infection. Tests conducted on infants with the condition show they lack cellular energy in the form of ATP.

Which cellular organelle is most likely defective and responsible for Leigh syndrome?

• chloroplast

• mitochondrion

• nucleus

• vacuole

Tags

NGSS.MS-LS1-5

NGSS.MS-LS3-1

Which part of the cell membrane shows active transport?

• W

• X

• Y

• Z

What can be concluded from the table?

• Different cells function together to perform a single task.

• Different cells are specialized to perform different functions.

• The same gene is expressed differently in different cells.

• The same task is performed by different structures in different cells.

Tags

NGSS.MS-LS1-2

Which Venn diagram correctly compares and contrasts the organelles present in both of the cell types shown?

• 
• 
• 
• 

Tags

NGSS.MS-LS1-2