CIE A Level Biology - 1.2 Cell structure MCQs - part 1

The electron micrograph shows onion root cells prepared using a freeze-fracture technique. The cells were quickly frozen and then physically broken apart. Freeze fracture breaks apart cells along weak areas, such as membranes and the surfaces of organelles. Which statement best explains the appearance of the electron micrograph?

• The cells were broken apart at the endoplasmic reticulum; structure X is a ribosome.

• The cells were broken apart at the nuclear envelope; structure X is a nuclear pore.

• The cells were broken apart at the nuclear envelope; structure X is a ribosome.

• The cells were broken apart at the tonoplast; structure X is a plasmodesma.

Which cell structures can form vesicles?

• A

• B

• C

• D

See picture for question

• A

• B

• C

• D

Which organelles found in animal or plant cells are surrounded by double membranes?

• chloroplasts, mitochondria, vacuoles

• chloroplasts, mitochondria, nuclei

• chloroplasts, nuclei, vacuoles

• mitochondria, nuclei, vacuoles

Some scientists think that mitochondria evolved from bacteria that entered the cytoplasm of a different cell and were able to survive there. Which structural features of mitochondria support this hypothesis?

• A

• B

• C

• D

Tags

NGSS.HS-LS4-1

NGSS.HS-LS4-2

What is present in all viruses, all prokaryotes and all eukaryotes?

• Cell wall
• Mitochondria
• Nucleus
• Genetic material

The electron micrograph shows a structure found in the cytoplasm of an animal cell. What is this structure?

• centriole

• lysosome

• ribosome

• vesicle

Answer explanation

Look out for this distinctive 9-2 pattern and remember that plant cells DON'T have centrioles

Which cell structures contain nucleic acid (DNA or RNA)?

• 1, 2, 3

• 1, 2, 4

• 1 and 4 only

• 3 and 4

Answer explanation

Mitochondria have their own genetic material. Ribosomes contain RNA.

Which statements about mitochondria, chloroplasts or prokaryotes are correct?

• 1, 2 and 3

• 1, 2 and 4

• 1 and 3 only

• 2 and 4 only

Tags

NGSS.HS-LS2-5

The very large (1000 nm) Pandora viruses found in Chile and Australia are considered to be viruses because they cannot replicate their own genome and cannot make proteins. They also share essential structural features with other viruses. What are the essential structural features of viruses?

• 1, 2 and 3

• 1, 2 and 4

• 1 and 3 only

• 2 and 4 only