Cell biology worksheet with answers

When human muscle cells lack oxygen, pyruvate is converted into:

1. AAcetyl-CoA
2. BGlucose
3. CLactate
4. DEthanol

Prokaryotic cells differ from eukaryotic cells because they:

1. AHave no membrane-bound nucleus
2. BHave no ribosomes
3. CHave no DNA
4. DAre always larger

Who proposed the double-helix model of DNA in 1953?

1. AMeselson and Stahl
2. BWatson and Crick
3. CMendel and Darwin
4. DHershey and Chase

What is the G0 phase of the cell cycle?

1. AA phase found only in cancer cells that have stopped responding to signals
2. BThe phase in which DNA is copied
3. CThe final stage of mitosis
4. DA resting state in which cells have left the cycle and stopped dividing

Transcription produces:

1. AProtein from mRNA
2. BDNA from RNA
3. CDNA from DNA
4. DmRNA from a DNA template

Which tag added in the Golgi sends enzymes to the lysosomes?

1. AUbiquitin
2. BA KDEL sequence
3. CMannose-6-phosphate
4. DA nuclear localisation signal

A plant cell placed in a concentrated salt solution loses water and its membrane pulls away from the cell wall. What is this called?

1. ACytolysis
2. BPlasmolysis
3. CHaemolysis
4. DTurgor

A disease is passed from an affected mother to all her children but never from an affected father. Where is the mutation most likely located?

1. AOn an autosome, as a recessive trait
2. BOn the Y chromosome
3. COn the X chromosome, as a dominant trait
4. DIn mitochondrial DNA