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WorksheetsIB Biology Cells & Cell Theory
Total questions: 32
Worksheet time: 32mins
The (a) of a microscope is its ability to show two close objects separately in the image.
The (a) modifies and packages proteins.
The naked DNA found in prokaryotic cells is called the (a) .
When two organisms benefit from a relationship, it is known as (a) .
The extra piece of circular DNA in some prokaryotic cells, which may carry antibiotic-resistance genes, is called a (a) .
Prokaryotes reproduce asexually by a method called (a) .
What is the main life process that is shown by the contractile vacuole in Paramecium?
nutrition
reproduction
photosynthesis
homeostasis
What is the main life process that is shown by the eye spot in Chlamydomonas?
photosynthesis
homeostasis
sensitivity
growth
What is the main life process that is shown by the chloroplast in Chlamydomonas?
nutrition
homeostasis
sensitivity
growth
Which life processes are carried out by all living organisms?
I. ventilation
II. metabolism
III. homeostasis
I and II only
I and III only
II and III only
I, II and III
Which of the following statements apply to both endocytosis and exocytosis?
I. ATP is required
II. Vesicle membrane and plasma membrane fuse
III. Vesicle contents are secreted out of the cell
I and II only
I and III only
II and III only
I, II and III
Which of the following statements are part of the cell theory?
I. Cells are the smallest units of life
II. All living things are made up of one or more cells
III. New cells arise from pre-existing cells by binary fission
I and II only
I and III only
II and III only
I, II and III
Why is the giant algae Acetabularia an exception to the cell theory?
It is multinuclear
It is multicellular
It has not divided into separate cells
It lacks a plasma membrane
Which part of the cell theory did Pasteur's experiment support?
All living things are made up of one or more cells
Cells are the smallest units of life
Life can appear from non-living material
New cells arise from pre-existing cells
According to the endosymbiotic theory:
I. an anaerobic bacterium was engulfed by an aerobic host cell
II. an animal cell evolved into a plant cell
III. an aerobic bacterium evolved into a mitochondrion
I and II only
I and III only
II and III only
I, II and III
Which of the following is a difference between the rough and smooth endoplasmic reticula?
the rough ER has a single membrane
the rough ER is involved in detoxification
the smooth ER produces steroid hormones
the smooth ER contains ribosomes
Which of the following are involved in the production of proteins and their export from the cell?
I. rough endoplasmic reticulum
II. Golgi apparatus
III. plasma membrane
I and II only
I and III only
II and III only
I, II and III
Which of the following structures contains 80S ribosomes?
a mitochondrion
a liver cell
a prokaryotic cell
a chloroplast
Which of the following structures have, or are classed as, a single membrane?
I. lysosome
II. plasma membrane
III. Golgi apparatus
I and II only
I and III only
II and III only
I, II and III
Structures can be arranged in order of size from smallest (a molecule) to largest (a eukaryotic cell).
Which structures would be between a molecule and a eukaryotic cell?
virus --> cell membrane thickness --> bacterium --> organelle
virus --> cell membrane thickness --> organelle --> bacterium
cell membrane thickness --> virus --> bacterium --> organelle
cell membrane thickness --> virus --> organelle --> bacterium
What is an advantage of using a scanning electron microscope (SEM), compared to using a transmission electron microscope (TEM)?
colour images can be viewed
living specimens can be viewed
3-D images can be viewed
images can be viewed up to a magnification of 2000x
A bacterium is 2 um in length and viewed at a magnification of x1500.
What would be the length, in mm, of the image of this bacterium?
1
10
3
30
A virus is viewed at a magnification of 500,000x and its image length is 20 mm.
What is the actual length, in nm, of this virus?
4
25
40
250
From earliest to latest, arrange the following structures in the order that they appear in the endosymbiotic theory.
I. photosynthetic bacterium
II. mitochondrion
III. anaerobic host cell
IV. chloroplast
III --> I --> II--> IV
III --> II --> I --> IV
I --> III --> II --IV
I --> III --> IV --> II
Human immunodeficiency virus (HIV) has a diameter of 120 nm.
The human cell that it infects has a diameter of 8 um.
By how many times larger is this human cell, compared to HIV?
15
67
150
670
During growth, a cell's diameter increases from 160 um to 190 um.
What is the percentage increase in this cell's diameter?
15.8
18.8
22.6
30.0
Which of the following is/are evidence that an organism is alive?
I. presence of a plasma membrane
II. consisting of one or more cells
III. metabolism
I only
II only
III only
I, II and III
Which of the following statements is/are true of the organelle shown in the picture?
None, some or all of the statements could be correct.
it has a double membrane
it has 80S ribosomes on its surface
it forms vesicles
it produces proteins that will be exported from the cell
Which 'theory' states that living material can come from nothing or non-living material? (a)
Which label in the electron micrograph shows the plasma membrane?
A
B
C
D
Which of the following structure(s) is/are found in all prokaryotic cells?
I. capsule
II. pili
III. flagellum
I only
II only
III only
II and III only
Which of the following statements give(s) evidence for the endosymbiotic theory?
I. mitochondria have 80S ribosomes
II. chloroplasts have circular DNA
III. mitochondria divide by mitosis
I only
II only
III only
I and II only
