IB Biology B2.2

Why is the cell wall not considered to be an organelle?

• It contains cellulose.

• It is too big.

• It is not surrounded by a membrane.

• It contains DNA.

Which of the following units is the most useful as the unit of size of a mitochondrion?

• A.

• µm.

• mm.

• nm.

Which of the following apparatus and techniques was used in determining the function of individual organelles?

I. Fractionation.

II. Ultracentrifugation.

III. Electron microscopy.

IV. Light microscopy

• All of the above.

• I, II and IV only.

• I only.

• II only.

Which of the following are advantages of the presence of a nuclear membrane surrounding the nucleus of eukaryotic cells?

I. Separation of the DNA from the cytoplasm.

II. Separation of gene transcription from translation.

III. Concentration of enzymes for DNA replication and transcription.

IV. Increased efficiency of nuclear division.

• All of the above.

• I, II and IV only.

• I and IV only.

• II and III only.

Which organelle has pores in its membrane?

• Mitochondrion

• Nucleus

• Ribosome

• Chloroplast

What is the advantage of organelles being surrounded by a membrane?

• Compartmentalization

• Increased size

• Color differentiation

• Weight reduction

Tags

NGSS.MS-LS1-2

Which organelle is responsible for aerobic respiration of the cell?

• Mitochondrion

• Chloroplast

• Nucleus

• Vacuole

Tags

NGSS.HS-LS1-7

What is the function of the nucleus in a cell?

• Stores genetic information

• Produces energy

• Synthesizes proteins

• Breaks down waste

Tags

NGSS.MS-LS1-2

Which is NOT an organelle found in a plant cell?

• Nucleus

• Chloroplast

• Cytoskeleton

• Central vacuole

Tags

NGSS.HS-LS1-5

Compartmentalization by organelles in a cell creates several separate parts each with its own solution.

• True

• False