Cell biology worksheet with answers

What does meiosis produce from one diploid cell?

1. AFour genetically identical haploid cells
2. BTwo genetically identical diploid cells
3. CTwo genetically different diploid cells
4. DFour genetically different haploid cells

Which process produces two genetically identical daughter cells?

1. AMeiosis
2. BMitosis
3. CMutation
4. DFertilisation

How do enzymes speed up chemical reactions?

1. AThey raise the temperature of the cell
2. BThey change the reaction's final equilibrium
3. CThey lower the activation energy
4. DThey are used up in the reaction

The rough endoplasmic reticulum is "rough" because it:

1. AContains DNA
2. BIs studded with ribosomes
3. CStores calcium only
4. DHas a cell wall

Gut epithelial cells take up glucose against its gradient with a sodium–glucose cotransporter. What kind of transport is this?

1. AFacilitated diffusion
2. BSimple diffusion
3. CSecondary active transport
4. DPrimary active transport

A codon consists of:

1. AOne nucleotide
2. BThree nucleotides on mRNA that code for an amino acid or a stop signal
3. CThree amino acids
4. DA whole gene

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

In E. coli, under which conditions is the lac operon most strongly transcribed?

1. ABoth lactose and glucose present
2. BLactose present and glucose absent
3. CBoth lactose and glucose absent
4. DLactose absent and glucose present