IB Biology: Topic 1 Cell Multiple Choice Questions Flashcards Learn Test

Which of the following will contribute to the cell theory?
I. Living organisms are composed of cells.
II. All cells come from pre-existing cells by mitosis.
III. Cells are the smallest units of life.

A. I only
B. II only
C. I and III only
D. I

II and I

A red blood cell is 8um in diameter. If drawn 100 times larger than its actual size

what diameter will be drawing be in mm.

A. 0.08mm
B. 0.8mm
C. 8mm
D. 80mm

A cell has a cytoplasm

a cell wall

What do diffusion and osmosis have in common?

A. They only happen in living cells
B. They require transport proteins in the membrane
C. They are passive transport mechanisms
D. Net movement of substances is against the concentration gradient

C. They are passive transport mechanisms

Which of the following characteristics found in a structure necessarily indicated that it is alive.

A. The presence of genetic material
B. The presence of lipid bilayer
C. Metabolism
D. Movement

C. Metabolism

Which pair of features is correct for both a human liver cell and an Escherichia coil cell?

Human liver cell

Escherichia coil cell
A. Contains DNA associated with protein/ contains naked DNA
B. has 70S ribosomes/ has 80S ribosomes
C. contains mitochondria/ contains mitochondria
D. contains DNA enclosed by a membrane/ contains DNA associated with protein

If a mitochondria has a length of 5um and a student's drawing of the mitochondria is 10mm

what is the magnification of the drawing?

A. x 0.0005
B. x 0.5
C. x 200
D. x 2000

In which of the following cells can more than one nucleus be found?

A. An unfertilized egg
B. Neuron
C. Sertoli cell
D. Muscle fibre

D. Muscle fibre

Which of the following does NOT occur during interphase?

A. Replication
B. Translation
C. Cytokinesis
D. An increase in the number of mitochondria

C. Cytokinesis

Which functions of life are found in all unicellular organisms?

A. growth

response and nutrition
B. Differentiation

Which statement is part of the cell theory?

A. Cells are composed of organic molecules
B. Cells have DNA as their genetic material
C. Cells have cytoplasm surrounded by a membrane
D. Cells come from pre-existing cells

D. Cells come from pre-existing cells

Which of the following are features of prokaryotic and eukaryotic cells?

A. 70 S ribosomes (p

e

How can cells in a multicellular organism differentiate?

A. They express some of their genes but not others
B. They all have a different genetic composition
C. Different cells contain a different set of chromosomes
D. Different cells do not have some of the genes

A. They express some of their genes but not others

What route is used to export proteins from the cell?

A. golgi - rER - plasma membrane
B. rER - golgi - plasma membrane
C. golgi - lysosome - rER
D. rER - lysosome - golgi

B. rER

Which events occur during G1 phase and S phase of the cell cycle?

G1 S
A. DNA replicates/ cell grows
B. mitosis beings/ cell divides
C. cell divides/ mitosis begins
D. cell grows/ DNA replicates

D. cell grows / DNA replicates

In a cell

what is the effect of a large surface area to volume ratio?
A. Slower rate of exchange of waste materials
B. Faster heat loss
C. Faster rate of mitosis
D. Slower intake of food

What do prokaryotic cells have that eukaryotic cells do not?

A. Mitochondria
B. 70S ribosomes
C. Histones
D. Internal membranes

B. 70S ribosomes

What happens during the G2 stage of interphase?

A. Homologous chromosomes pair
B. Synthesis of proteins
C. Homologous chromosomes separate
D. Replication of DNA

B. Synthesis of proteins

Which of the following take(s) place during either interphase or mitosis in animal cells?
I. Re-formation of nuclear membranes
II. Pairing of homologous chromosomes
III. DNA replication

A. I only
B. I and II only
C. II and III only
D. I and III only

D. I and III only

What is the sequence of stages during the cell cycle?

A. G1 - S - G2 - mitosis - cytokinesis
B. mitosis - G1 - G2 - cytokinesis - S
C. G1 - G2 - S - mitosis - cytokinesis
D. G1 - G2 - mitosis - cytokinesis - S

A. G1 - S - G2 - mitosis - cytokinesis

What is the difference between the structure of all prokaryotes and all eukaryotes?

Prokaryotes Eukaryotes
A. cell wall/ no cell wall
B. chloroplasts/ no chloroplasts
C. flagellum/ no flagellum
D. nucleoid / nuclear envelope

D. nuleoid / nuclear envelope

What does facilitated diffusion across a cell membrane require?

A pore protein / ATP / A concentration gradient
A. y/n/n
B. n/n/y
C. y/n/y
D. n/y/n

C. A pore protein

When observing the behavior of a vesicle in a cell

what identifies it as a vesicle ONLY involved in exocytosis?
A. Adhesion between two lipid bilayers
B. Fusion of two membranes
C. Secretion of material
D. Invagination of a plasma membrane

How do prokaryotic cells divide?

A. By mitosis
B. By meiosis
C. By budding
D. By binary fusion

D. By binary fusion

What can the extracellular matrix of cells be made of?
I. Polysaccharide
II. Glycoprotein
III. Phospholipid

A. I only
B. I and II only
C. II and III only
D. I

II and III only

During which phase of the cell cycle do chromosomes duplicate?

A. G1
B. S
C. G2
D. Mitosis

B. S

What is the difference between simple diffusion and facilitated diffusion?

simple diffusion / facilitated diffusion
A. rate decreases with increasing concentration gradient / rate increases with increasing concentration gradient
B. faster movement of molecules / slower movement of molecules
C. Always involves a membrane / never involves a membrane
D. uses any part of a membrane / uses channels in the membrane

D. Uses any part of a membrane / uses channels in the membrane

Which of these processes require mitosis?

A. Embryological development
B. Reducing surface area to volume ratio
C. Maintaining cell size
D. Cell growth

A. Embryological development

Which of the following structures are found in all cells?

A. Mitochondria
B. Cell walls
C. Chloroplasts
D. Ribosomes

D. Ribosomes

By what processes do most bacteria divide?

A. Mitosis
B. Meiosis
C. Conjugation
D. Binary fusion

D. Binary Fusion

What is a difference between a cell in the G1 phase and a cell in the G2 phase of the cell cycle?

A. A cell in the G2 phase would be smaller then a cell in the G1 phase
B. A cell in the G2 phase would have more mitochondria than a cell in the G1 phase
C. A cell in the G1 phase would have more DNA in its chromosomes than a cell in the G2 phase
D. DNA replication occurs in the G1 phase but not in the G2 phase

B. A cell in the G2 phase would have more mitochondria than a cell in the G1 phase

Which of the following is NOT a function performed by a membrane protein?

A. Hormone binding sites
B. Cell adhesion
C. Enzyme synthesis
D. Pumps of active transport

C. Enzyme synthesis

If a Sequoia sempervires tree is 100 m tall and a drawing of it is 100mm

what is the magnification of the drawing?

A. x 0.001
B. x 0.1
C. x 1.0
D. x 1000

Which of the following structures does Escheridchia coli have?
I. 70S ribosomes
II. Pili
III. Nucleus

A. I only
B. I and II only
C. II and III only
D. I

II and III

What feature do plant cells have but not animal cells?

A. Plasma membrane
B. Mitochondria
C. Cell walls
D. 80S ribosomes

C. Cell walls

Cells in the adrenal gland produce the hormone epinephrine and store it in vesicles. To release epinephrin these vesicles are carried to the plasma membrane and fuse with it. What process is occurring?

A. Expulsion
B. Exchange
C. Excretion
D. Exocytosis

D. Exocytosis

During reproduction in flowering plants an embryo sac is produced

containing one haploid nucleus. This haploid nucleus divides by mitosis three times. What is produced?

A. One diploid nucleus
B. Four diploid nuclei
C. Four haploid nuclei
D. Eight haploid nuclei

What does therapeutic cloning involve?

A. Developing genetically identical cultures of human cells for use in drug testing
B. Helping infertile couple to conceive by injecting the father's sperm into the mother's egg
C. Producing embryonic stem cells for medical use
D. Replacing a mutant allele in an embryo to prevent genetic disease

C. Producing embryonic stem cells from medical use

What is the correct order of increasing size for the following biological structures?
I. The width of a virus
II. The width of a bacterium
III. The thickness of a cell surface membrane
IV. The diameter of a eukaryotic cell

A. I - III - II - IV
B. I - III - IV - II
C. III - I - II - IV
D. III - II - I - IV

C. III - I - II - IV

Which of the following structure are present in both plant and animal cells?
I. Cell wall
II. Chloroplast
III. Mitochondria

A. I only
B. I and II only
C. I and III only
D. III only

D. III only

In viewing an electron micrograph of a cell

ribosomes

The DNA of a particular cell is damaged

so that the cell continues to divide uncontrollably. What is the possible result?

A. Coronary heart disease
B. AIDS
C. Tumor formation
D. Down syndrome

What is produced as a result of mitosis?

A. Two cells

each containing half the number of chromosomes of the original cell
B. Two cells

Which of the following is a feature of exocytosis but not endocytosis?
A. Shape changes of a membrane
B. Vesicle formation
C. Use of ATP
D. Secretion

D. Secretion