Biology: cell biology

Tick the examples of eukaryotic cells.

• Root hair cell

• Muscle cell

• Bacterial cell

• White blood cell

Answer explanation

All plant and animal cells are eukaryotic as they are complex. Bacteria cells are prokaryotic (smaller and simpler).

Tick the features of an animal cell.

• nucleus, cytoplasm, cell membrane, mitochondria, ribosomes

• nucleus, cell wall, cell membrane, mitochondria, plasmids

• strand of DNA, chloroplasts, mitochondria, ribosomes, cell membrane

• cell membrane, vacuole, nucleus, ribosomes

Tick the features of an plant cell.

• nucleus, cytoplasm, cell membrane, mitochondria, ribosomes

• cell wall, cell membrane, vacuole, chloroplasts, cytoplasm, mitochondria, ribosomes, nucleas

• cell wall, cell membrane, vacuole, chloroplasts, cytoplasm, mitochondria, ribosomes

• cell wall, cell membrane, chloroplasts, cytoplasm, mitochondria, ribosomes, plasmids

Tick the features of an bacteria cell.

• nucleus, cytoplasm, cell membrane, mitochondria, ribosomes

• nucleus, cell wall, cell membrane, mitochondria, plasmids

• plasmids, cell membrane, cytoplasm, strand of DNA

• plasmids, cell membrane, cell wall, cytoplasm, strand of DNA

What is the formula for magnification?

• magnification = image size x real size

• image size = magnification x real size

The required practical involves observing onion cells under a microscope

• true

• false

Answer explanation

1) add a drop of water on the slide. add the single layer of onion tissue. add a drop of iodine solution.

2) place a cover slip on it.

3) use a light microscope to observe it.

What is an undifferentiated cell called?

• single cell

• specialised cell

• stem cell

• undifferentiated cell

Tick the adaptations of sperm cells.

• long tail

• streamlined

• lots of mitochondria

• hollow

Tick the adaptations of nerve cells.

• lots of branches

• multiple nuclei

• lots of mitochondria

• long

Tick the adaptations of muscle cells.

• large surface area

• streamlined

• lots of mitochondria

• lots of ribosomes