A2.2 Cell structure (SL-HL)

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Biology HL

Biology SL group 1

Biology SL group 2

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The diagram shows a type of prokaryotic cell, a bacterium.
Which three structures are found in both an animal cell and this bacterium cell? *

1 point

A. cell membrane, cell wall and DNA

B. cell membrane, DNA and ribosome

C. capsule, DNA and ribosome

D. capsule, cell membrane and cell wall

Which of the following can not be viewed using a light microscope? *

1 point

A. Nucleus

B. Cell wall

C. Chloroplasts

D. Ribosomes

Which of the following correctly identifies the process that allows prokaryotic cells to reproduce? *

1 point

A. Mitosis

B. Binary fission

C. Fertilisation

D. Meiosis

The list below contains structures that are all features of eukaryotic cells.

I. Nucleus
II. Endoplasmic reticulum
III. Lysosome
IV. Chloroplast
V. Mitochondrion

Which of these structures will have a double membrane?

1 point

А. I, II and III

B. I, III and IV

C. I, IV and V

D. II, III and IV

Which set of observations would indicate that a student is observing a eukaryotic cell? *

1 point

The diagram shows a typical plant cell. Which of the cell components would be present in prokaryotes? *

1 point

A. I only

B. II only

C. II and III

D. l and IV

The following statement describes some of Louis Pasteur’s findings:

Broth was first boiled, killing all organisms in it. The broth was then transferred to a swan-necked flask, which prevented organisms from entering. The result was that no organism subsequently grew in the broth. The swan-necked flask was then broken. The result was that mould subsequently grew in the broth.

What did these findings suggest?

1 point

A. Mould needs nutrients in order to grow.

B. Aerobic respiration requires the presence of oxygen.

C. Mould is a form of microorganism.

D. Spontaneous generation of cells does not occur.

Which process is occurring in the diagram below? *

1 point

A. Binary fission

B. Cytokinesis

C. Mitosis

D. Meiosis

A giant bacterium, Epulopiscium fishelsoni was discovered in 1985.

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

1 point

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

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

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

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

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

Which cell component will show an increase in radioactivity first?

1 point

A. Mitochondria

B. Golgi apparatus

C. Rough endoplasmic reticulum

D. Nucleus

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

What was that theory?

1 point

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

B. That new organisms can appear spontaneously from non-living matter

C. That mitochondria came about due to a process of endosymbiosis

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

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?

1 point

A. Rough endoplasmic reticulum

B. Golgi apparatus

C. Lysosomes

D. Mitochondria

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