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DP IB Biology: HL

Topic Questions

Home / IB / Biology: HL / DP / Topic Questions / 1. Cell Biology / 1.2 Cells: Origin & Ultrastructure / Multiple Choice: Paper 1


1.2 Cells: Origin & Ultrastructure

Question 1

Marks: 1

A giant bacterium, Epulopiscium fishelsoni was discovered in 1985.


Which cell structure(s) would enable biologists to classify Epulopiscium as prokaryotic?

  • Circular DNA and 70S ribosomes occurring freely in the cytoplasm and a cell wall made of murein.

  • A pair of centrioles close to the nuclear pore with 70S and 80S ribosomes occurring freely in the cytoplasm.

  • Smooth endoplasmic reticulum throughout the cytoplasm and a cell wall made of murein.

  • A cellulose cell wall outside the plasma membrane with 70S ribosomes and circular DNA occurring freely in the cytoplasm.

Choose your answer
  

Question 2

Marks: 1

A cell which is actively growing is supplied with radioactive amino acids.

Which cell component will show an increase in radioactivity first?

  • Mitochondria

  • Golgi apparatus

  • Rough endoplasmic reticulum

  • Nucleus

Choose your answer
  

Question 3

Marks: 1

The image below is an electron micrograph of part of an animal cell.

Which of the following options (A to D) would be the site of protein modification and packaging?

h-3

 

    Choose your answer
      

    Question 4

    Marks: 1

    In the 19th century Louis Pasteur carried out an experiment that disproved a popular theory at the time. 

    What was that theory?

    • That new traits in organisms evolve due to changes that occur during the organisms lifetime

    • That new organisms can appear spontaneously from non-living matter

    • That mitochondria came about due to a process of endosymbiosis

    • That traits are inherited by the passing down of proteins from parents to offspring

    Choose your answer
      
    Key Concepts
    Pasteur's Experiments

    Question 5

    Marks: 1

    The role of exocrine gland cells in the pancreas is to secrete digestive enzymes into the pancreatic duct. 

    Which of the following organelles does not directly help it to achieve this task? 

    • Rough endoplasmic reticulum

    • Golgi apparatus

    • Lysosomes

    • Mitochondria

    Choose your answer