Curriculum
Course: IB Biology SL
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Curriculum

IB Biology SL

Theme A — Unity and diversity

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Theme B — Form and function

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Theme C — Interaction and interdependence

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Theme D — Continuity and change

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5. Tools

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6. Inquiry Process

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Additional lessons

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Quiz

A2.1 Origins of cells – Exam questions

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  • Questions count: 12
  • Passing grade: B+
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1.
In the sequence covered in this lesson, which step comes immediately after Ancestral host cell?
In the sequence covered in this lesson, which step comes immediately after Ancestral host cell?
Chloroplast
Engulfs aerobic bacterium
Mitochondrion
Engulfs cyanobacterium
2.
Which observation supports the endosymbiotic origin of mitochondria?
They are found in all cells
They contain circular DNA and 70S ribosomes
They are surrounded by a cell wall
They are made by the Golgi apparatus
3.
Which statement best describes Circular DNA?
Which statement best describes Circular DNA?
Evidence of engulfment.
Plasma membrane folded to form nucleus and ER.
Like bacterial chromosomes.
Prokaryote-type ribosomes in organelles.
4.
Which step comes first in the sequence covered in this lesson?
Which step comes first in the sequence covered in this lesson?
Chloroplast
Mitochondrion
Engulfs cyanobacterium
Ancestral host cell
5.
Which key term matches this description: "Plasma membrane folded to form nucleus and ER."
Which key term matches this description: "Plasma membrane folded to form nucleus and ER."
Double membrane
Endosymbiotic theory
70S ribosomes
Infolding theory
6.
According to the comparison table in this lesson, what is the Supports of Own circular DNA?
According to the comparison table in this lesson, what is the Supports of Own circular DNA?
Evidence for endosymbiosis
Engulfment
Prokaryotic origin
Similar machinery
Independent replication
7.
According to the comparison table in this lesson, what is the Supports of Divide by fission?
According to the comparison table in this lesson, what is the Supports of Divide by fission?
Evidence for endosymbiosis
Independent replication
Prokaryotic origin
Similar machinery
Engulfment
8.
Which observation supports endosymbiosis?
Mitochondria have linear DNA with histones
Mitochondria have their own circular DNA
Chloroplasts lack ribosomes
Mitochondria are made by the Golgi
9.
A main advantage of compartmentalisation is that it
removes the need for enzymes
separates reactions and allows different conditions
makes cells smaller
prevents DNA replication
10.
Chloroplasts are thought to derive from
archaea
aerobic α-proteobacteria
fungi
cyanobacteria
11.
Where is DNA located in a bacterium?
Nucleolus
Nucleoid region
Nuclear envelope
Golgi
12.
Complete the statement: Mitochondria have their own ______.
Complete the statement: Mitochondria have their own ______.
Binary fission
cyanobacteria
Endosymbiotic theory
circular DNA
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Part of Theme A — Unity and diversity — see every lesson and quiz in this unit.
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