Cell Structure and Organisation

Cell structure and Organisation Q5

• A

• B

• C

• D

Answer explanation

The cell wall is found in plant cells, not in animal cells.

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

NGSS.MS-LS1-3

Cell structure and Organisation Q6

• A

• B

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• D

Answer explanation

The nucleoplasm is denser than the cytoplasm, thus the nucleoplasm will sink while the cytoplasm will float.

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

NGSS.MS-LS1-3

Cell structure and Organisation Q7

• A

• B

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• D

Answer explanation

The cell wall is freely permeable to small molecules, including glucose. The cell surface. the membrane is selectively permeable but allows glucose to move into and out of the cell. The mitochondrial membrane and chloroplast envelope surrounds the mitochondrion and chloroplast respectively and allows glucose to move into and out of the respective organelles.

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

NGSS.MS-LS1-3

Cell structure and Organisation Q8

• A

• B

• C

• D

Answer explanation

The cell wa ll functions like a sieve because it is freely permeable to molecules that are small enough to pass through its pores. The cell surface membrane is selectively permeable, where other factors besides the size of the molecule play a part in its permeability.

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

NGSS.MS-LS1-3

Cell structure and Organisation Q9

• A

• B

• C

• D

Answer explanation

Starch is a very large molecule that cannot pass through the cell wall, cell surface membrane, mitochondrial membrane and nuclear envelope.

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

NGSS.MS-LS1-3

Cell structure and Organisation Q10

• A

• B

• C

• D

Answer explanation

The outer surface of the rough endoplasmic reticulum is continuous with the nuclear envelope.

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

NGSS.MS-LS1-3

Cell structure and Organisation Q12

• A

• B

• C

• D

Answer explanation

Option 1 is false because the rough endoplasmic reticulum is directly continuous with the nuclear membrane but the smooth endoplasmic reticulum is not (it is directly continuous with the rough endoplasmic reticulum). Option 3 is false because the rough endoplasmic reticulum does not synthesise proteins directly. It only processes the proteins synthesised by the ribosomes for transport out of the cell. Options 2 and 4 are true.

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

NGSS.MS-LS1-3

Cell structure and Organisation Q13

• A

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• D

Answer explanation

The rough endoplasmic reticulum processes the proteins synthesised by the ribosomes. The proteins are further modified and repackaged by the Golgi apparatus into secretory vesicles for export out of the cell.

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

NGSS.MS-LS1-3

Cell structure and Organisation Q14

• A

• B

• C

• D

Answer explanation

Both the plant vacuoles and animal vacuoles contain water and food substances. Unlike the animal vacuoles, the plant vacuoles may additionally contain some waste.

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

NGSS.MS-LS1-3

Cell structure and Organisation Q15

• A

• B

• C

• D

Answer explanation

Option 3 is false because glucose is oxidised in the mitochondrion but it is manufactured in the chloroplast. Options 1, 2 and 4 are true.

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

NGSS.MS-LS1-3