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IB Bio Final

Total questions: 66

Worksheet time: 34mins

Name
Class
Date
1.
What structures are found in eukaryotes but not in prokaryotes?
a)
naked DNA and mitochondria
b)
Golgi apparatus and 70S ribosomes
c)
70S ribosomes and nuclear membrane
d)
mitochondria and nuclear membrane
2.
Why is stem cell research considered unethical by some groups?
a)
Stem cells are living organisms.
b)
New organisms could be produced from stem cells. 
c)
Use of stem cells could involve the culture of pluripotent cells.
d)
Use of embryonic cells involves the death of early-stage embryos.
3.
What is happening at the structure labelled X?
a)
Synthesis of proteins
b)
Transport of proteins to the nucleus
c)
Modification of proteins prior to export
d)
Secretion of proteins through the plasma membrane
4.
Cyclins were discovered by Timothy R Hunt in 1982 while studying sea urchins. What is a function of cyclins?
a)
Circulation of seawater for gas exchange
b)
Rotation of flagella
c)
Control of the cell cycle
d)
Recycling of nutrients
5.
Which statement is a part of cell theory?
a)
All cells have a cell wall.
b)
Every cell shows emergent properties.
c)
All organisms are made of one or more cells.
d)
Every cell carries out all the functions of life.
6.
What is the size range for the diameters of most plant and animal cells?
a)
100 nm to 1μm
b)
1μm to 10 μm
c)
10 μm to 100 μm
d)
100 μm to 1mm
7.
Which combination of features is found in most plant and animal cells?
a)
plasma membrane, lysosome, Golgi apparatus
b)
cytoplasm, mitochondria, ribosomes
c)
rough ER, nucleus, centrioles
d)
plastids, cytoplasm, nucleus
8.
Which pair features is correct for BOTH plant and prokaryotic cells?
a)
A
b)
B
c)
C
d)
D
9.
Which of the following are associated with mitosis?
I. Tissue repair
II. Growth
III. Asexual reproduction
a)
I and II only
b)
I and III only
c)
II and III only
d)
I, II, and III
10.
What are homologous chromosomes?
a)
Two chromosomes with differing sets of genes, in the same sequence, with the same alleles.
b)
Two chromosomes with the same get of genes, in a different sequence, with the same alleles. 
c)
Two chromosomes with a different set of genes, in the same sequence, with different alleles.
d)
Two chromosomes with the same set of genes, in the same sequence, sometimes with different alleles. 
11.
Which of the following are features of prokaryotes and eukaryotes?
a)
A
b)
B
c)
C
d)
D
12.
Which statement is part of 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.
13.
What route is used to export proteins from the cell? 
a)
Golgi apparatus → rough endoplasmic reticulum → plasma membrane
b)
rough endoplasmic reticulum → Golgi apparatus → plasma membrane
c)
Golgi apparatus → lysosome → rough endoplasmic reticulum
d)
rough endoplasmic reticulum → lysosome → Golgi apparatus
14.
Which of the following take(s) place during either interphase or mitosis of an animal cell?
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
15.
What prevents antibiotics from being effective against viruses?
a)
Viruses have a high rate of mutation.
b)
Viruses have no RNA.
c)
Viruses hae no metabolism.
d)
Viruses have a protein shell that protects them.
16.
How do prokaryotic cells reproduce?
a)
by mitosis
b)
by meiosis
c)
by budding
d)
by binary fission
17.
What are the fundamental structural units of a eukaryotic chromosome?
a)
nucleosomes
b)
centromeres
c)
histones
d)
nucleoids
18.
A students observes and draws an Amoeba, using the high power lens of a microscope. The diameter of the drawing is 100 mm. The actual diameter of the Amoeba is 100 μm. What is the magnification of the drawing?
a)
0.001
b)
100
c)
400
d)
1000
19.
What is a difference between plant and animal cells? 
a)
Animal cells burst when they take in excess water by osmosis whereas plant cells do not. 
b)
Plant cells store cellulose whereas animal cells store starch.
c)
Animal cells have ribosomes whereas plant cells do not.
d)
Plant cells have a cell wall whereas animal cells have a cell membrane.
20.
What ensures that mitosis produces two genetically identical nuclei?
a)
One of each of the twenty-three types of chromosomes is pulled to each pole of the cell by spindle microtubules
b)
Half of the chromosomes are pulled to each centriole by mesosomes.
c)
Identical chromatids are pulled to opposite poles by spindle microtubules.
d)
DNA molecules are moved to the equator of the cell where they are replicated. 
21.
What happens during the G2 stage of interphase?
a)
Homologous chromosomes pair
b)
Synthesis of proteins
c)
Homologous chromosomes separate
d)
Replication of DNA
22.
Which of the following forms the nucleosome?
a)
DNA and histone molecules
b)
DNA only
c)
RNA and histone molecules
d)
histone molecules only
23.
 What is a difference between a cell in the G1 phase of and a cell in the G2 phase of the cell cycle.
a)
A cell in the G2 phase would be smaller than 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.
24.
The electron micrograph shows part of a palisade mesophyll cell. Which of the labelled structures controls the exchange of substances to and from the cell?
a)
A
b)
B
c)
C
d)
D
25.
The diagram shows the concentration of four cyclins during the cell cycle. Which curve represents the cyclin that promotes the assembly of the mitotic spindle? 
a)
A
b)
B
c)
C
d)
D
26.
The image shows an electron micrograph of mesophyll cells. What is the name of the structure labelled X?
a)
cytoplasm
b)
mitochondrion
c)
nucleus
d)
chloroplast
27.
What is evidence for the endosymbiotic theory?
a)
RNA can catalyze metabolic reactions.
b)
Meteorites contain organic molecules.
c)
Amino acids can be synthesized from organic compounds.
d)
Mitochondria possess their own DNA
28.
Stem cells that can differentiate into any type of cell are called
a)
totipotent stem cells
b)
pluripotent stem cells
c)
multipotent stem cells
d)
adult stem cells
29.
Which type of gene when functioning correctly acts to slow the cell cycle? 
a)
oncogene
b)
proto-oncogene
c)
tumor suppressor gene
d)
tumor necrosis factor gene
30.

Which evidence falsifies the Davson-Danielli model?

a)

The presence of globular proteins with the phospholipid bilayer

b)

Non-polar amino acids cause proteins to remain embedded in membranes

c)

Membranes proteins remain in a fixed position inside a membrane

31.

Which organelle is involved in generating vesicles destined for the cell membrane?

a)

Golgi apparatus

b)

smooth endoplasmic reticulum

c)

rough endoplasmic reticulum

d)

lysosome

32.
a)

A

b)

B

c)

C

d)

D

33.
a)

A

b)

B

c)

C

d)

D

34.

Pancreatic gland cells produce and secrete large amounts of digestive enzymes (proteins). Which organelles would you expect to be present in higher than normal amounts in such cells?

a)

free ribosomes and Golgi apparatus

b)

rough endoplasmic reticulum and lysosomes

c)

rough endoplasmic reticulum and Golgi apparatus

d)

free ribosomes and lysosomes

35.

The giant alga Acetabularia has a feature that suggests it is an exception to cell theory. What feature is this?

a)

it lacks a nucleus

b)

it lacks a cell wall

c)

it has only one mitochondrion

d)

it lacks subdivision into separate cells

36.

The image shows an electron micrograph of mesophyll cells. What is the name of the structure labelled X?

a)

cytoplasm

b)

mitochondrion

c)

nucleus

d)

chloroplast

37.

The image shows an electron micrograph of pancreatic exocrine cells. What is the role of the vesicles shown in the micrograph?

a)

To transport hormones between the rough endoplasmic reticulum and the Golgi apparatus

b)

To store glycogen when blood glucose levels are high

c)

To move enzymes out of the cell by exocytosis

d)

To digest cellulose

38.

What is evidence for the endosymbiotic theory?

a)

RNA can catalyze metabolic reactions.

b)

Meteorites contain organic molecules.

c)

Amino acids can be synthesized from inorganic compounds.

d)

Mitochondria possess their own DNA.

39.

Which can be explained by the solvent properties of water?

a)

Sodium chloride is transported as NA+ and Cl- in blood.

b)

Movement of water occurs under tension in the xylem.

c)

Water is the coolant in sweat.

d)

Ice floats on liquid water.

40.

What is a role of cholesterol in animal cells?

a)

It increases body fat.

b)

It controls membrane fluidity.

c)

It lines the inner wall of capillaries.

d)

It is a constituent of bile.

41.

The graph shows the survival probabilities for current smokers and for those who never smoked among women 30 to 80 years of age. What can be deduced from this graph?

a)

There is a correlation between smoking and cancer.

b)

Smoking reduces life expectancy.

c)

Smoking causes cancer.

d)

70% of smokers survive to 80 years old.

42.

Why is sweat a good coolant for the body?

a)

The arterioles that transfer water to sweat move closer to the skin surface when it is hot.

b)

Breaking H bonds between water molecules in sweat requires energy from body heat.

c)

Sweat contains minerals such as sodium chloride.

d)

Sweat is non-polar.

43.

What is the process shown in this image?

a)

Binary fission of a prokaryotic cell

b)

Telophase in a eukaryotic cell

c)

End of mitosis in a prokaryotic cell

d)

Cytokinesis of a eukaryotic cell

44.

What can be deducted about a striated muscle fiber from both of these statements:


"A eukaryotic cell has one nucleus."

"A striated muscle fiber has many nuclei."

a)

The cell is prokaryotic.

b)

The cell is an exception to cell theory.

c)

The cell consists of aseptate hyphae.

d)

The cell is preparing to divide.

45.

Which statement is true for the antibiotic penicillin?

a)

Watson and Crick developed the usage of penicillin.

b)

Penicillin blocks processes unique to eukaryotic cells.

c)

Viruses lack metabolism and penicillin has no effect on them.

d)

Florey and Chain sequenced the genome of Penicillium notatum.

46.

What distinguishes prokaryotic cells and eukaryotic cells?

a)

prokaryotic cells: cell wall

eukaryotic cells: plasma membrane

b)

prokaryotic cells: cell structure not compartmentalized

eukaryotic cells: cell structure compartmentalized

c)

prokaryotic cells: smooth endoplasmic reticulum

eukaryotic cells: rough endoplasmic reticulum

d)

prokaryotic cells: no ribosomes

eukaryotic cells: ribosomes present

47.

This statement relates to Pasteur's experiments.


In his experiments, Louis Pasteur demonstrated that:

  • if broth was boiled to kill all organisms and was then kept in swan-necked flasks, preventing the entry of organisms, no organisms grew in the broth
  • if the swan-necked flask was broken, mold soon started to grow in the broth.


What did this statement suggest?

a)

mold evolved by endosymbiosis

b)

oxygen is required for anaerobic respiration

c)

cells can only be formed by division of pre-existing cells

d)

nutrients are a requirement for mold growth

48.

Which of the following are associated with mitosis?

I. Tissue repair

II. Growth

III. Asexual reproduction

a)

I and II only

b)

I and III only

c)

II and III only

d)

I, II, and III

49.

What prevents antibiotics from being effective against viruses?

a)

Viruses have a high rate of mutation.

b)

Viruses have no RNA.

c)

Viruses have no metabolism.

d)

Viruses have a protein shell that protects them.

50.

A polymer of alpha-D-glucose found in plants has mostly 1,4 linkages and some 1,6 linkages. Which molecule fits this description?

a)

glycogen

b)

cellulose

c)

amylose

d)

amylopectin

51.

What type of molecule is shown in this diagram?

a)

trans saturated fatty acid

b)

cis unsaturated fatty acid

c)

cis saturated fatty acid

d)

trans unsaturated fatty acid

52.

Glucose is absorbed through protein channels in the plasma membrane of epithelium cells in the small intestine. Which characteristics of glucose prevent its diffusion through the phospholipid bilayer?

a)

it is non-polar and therefore hydrophobic

b)

its hydrogen bonds link with amino acids in the protein channel

c)

it is polar and therefore hydrophilic

d)

its covalent bonds interact with the phospholipids

53.

What characteristic shows that this steroid molecule is a lipid?

a)

it is made of carbon rings

b)

it has a very low proportion of oxygen to carbon

c)

it contains OH groups as do fatty acids

d)

it is made only of nitrogen, oxygen, and hydrogen

54.

The diagram shows the structure of palmitic acid. What type of fatty acid is palmitic acid?

a)

it is monosaturated

b)

it is polyunsaturated

c)

it is saturated

d)

it is a trans-fatty acid

55.

Which molecule diagram corresponds to the name?

a)
b)
c)
d)
56.

Which molecule is a sugar?

a)
b)
c)
d)
57.

Which substance is used for structure in plants?

a)

amylopectin

b)

cellulose

c)

collagen

d)

starch

58.

In which compounds would a double bond link carbon to oxygen (C=O)?


I. amino acid

II. fatty acid

III. glycerol

a)

I and II only

b)

II and III only

c)

I and III only

d)

I, II, and III

59.

That is the maximum number of fatty acids that can be condensed with glycerol?

a)

one

b)

two

c)

three

d)

four

60.

Which described these molecules correctly?

a)

I: ribose II: amino acid

b)

I: glucose II: amino acid

c)

I: ribose II: fatty acid

d)

I: glucose II: fatty acid

61.

Which of the following molecules is ribose?

a)
b)
c)
d)
62.

In 1828, Friedrich Wöhler artificially produced urea (organic compound) by an internal rearrangement of the atoms of ammonium cyanate (inorganic compound). What important principal did this experiment show?

a)

Organic compounds can be synthesized without the need of a vital force.

b)

Organic compounds can only be formed from pre-existing inorganic compounds.

c)

Inorganic compounds are essential for living organisms.

d)

Organic compounds are more simple substances than inorganic compounds.

63.

Which diagram represents the polarity of a water molecule?

a)
b)
c)
d)
64.

What causes water to have a relatively high boiling point?

a)

hydrogen bonds between water molecules

b)

hydrogen bonds between hydrogen and oxygen within water molecules

c)

cohesion between water molecules and the contain in which the water is boiled

d)

covalent bonds between hydrogen and oxygen within water molecules

65.

Which of the following is true about a polar amino acid and cellulose?

a)

both are polysaccharides

b)

both contain nitrogen

c)

both are hydrophobic

d)

both contain hydrogen atoms

66.

Blood is a water-based transport medium. Which property of water makes it a good transport medium?

a)

high specific heat

b)

transparency

c)

versatility as a solvent

d)

it has its greatest density at 4o C

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