My Classroom Material 38 - BIOLOGY JUNCTION

Quiz – Biochemistry

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	Biochemistry Quiz
	1. All of the following are carbohydrates EXCEPT: starch glycogen chitin cholesterol2. The structure contains which functional group aldehyde ketone amino carboxyl 3. Fatty acids that are unsaturated have: an amino group a double bond an excess of protons a carboxyl group 4. The structure below is a: monosaccharide disaccharide lipid polymer 5. Which of the following can have a quaternary structure? fatty acid protein polysaccharide DNA 6. An organic compound is one that: contains carbon is slightly acidic forms long chains is soluble in water 7. Which of the following elements is the LEAST abundant in living organisms? oxygen nitrogen phosphorous sodium 8. Which of the following is used in PET scans? uranium ions isotopes steroids 9. Carbon can form ___ separate bonds with other elements? 1 2 3 4 10. The cohesion of water is caused by: ionic bonds hydrophobic compounds hydrogen bonds covalent bonds Score = Correct answers:

1. Name this structure.
deoxynucleic acid
deoxyribonucleic acid
denatured ribonucleic acid
deoxoribonuclear acid2. The process by which RNA is made from DNA:
synthesis
translation
transcription
replication

3. Adenine always pairs with:
thymine
cytosine
guanine
ribose

4. The “rungs” of the DNA ladder are made of:
phosphates and hydrogen
glucose and sugars
sugars and phosphates
base pairs

5. The DNA molecule is held together by:
magnetism
glucose
glue
hydrogen bonds

6. The process by which DNA makes a copy of itself is called:
synthesis
replication
transcription
translation

7. A gene is:
a segment of DNA that codes for a protein
a set of homologous chromosomes
a molecule within DNA
a type of pants

8. The twisted ladder shape of DNA is called a:
hydrogen twist
deoxyribose flip
double helix
double membrane

9. The sugar found in DNA is:
equal
deoxyribose
ribose
glucose

10. Which of the following takes the genetic code to the cytoplasm:
DNA
deoxyribose
tRNA
mRNA

11. The three nucleotide sequence on RNA is called a:
tRNA
codon
triplet
gene

12. Three nucleotides code for:
1 amino acid
3 amino acids
1 protein
3 proteins

13. RNA differs from DNA in that:
it has a different kind of sugar
it is single stranded
it has uracil
all of these

14. DNA is called the “blueprint of life” because:
it is like a fingerprint
it has a blue color
it contains the plans for building an organism
it can relay messages to other molecules

15. The two men who established the structure of DNA were:

Frederick and Alvers
Watson and Crick
Berkely and Fry
Darwin and Lamarke

Score =
Correct answers:

Diffusion Across Membranes

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Diffusion Across membranes

1. Which of the following is NOT a type of passive transport?
diffusion
osmosis
endocytosis
facilitated diffusion

2. Chamber A contains 40% helium and Chamber B contains 20% helium. Chambers are connected by a tube the molecules are free to cross. Which of the following will occur?
some helium will move from chamber A to chamber B
some helium will move from chamber B to chamber A
helium will remain concentrated in chamber A
all of the helium will move into chamber B

3. What will happen to an animal cell placed in a salt water solution?
The cell will shrink
the cell will expand
the cell will burst
the cell will shrink and then expand and then shrink again

4. An animal cell placed in a hypotonic solution will:
die
take on water
lose water
divide

5. Which of the following is a type of active transport?
sodium potassium pump
endocytosis
exocytosis
all of these

6. Active transport requires:
a concentration gradient
osmosis
energy
a hypertonic solution

Score =
Correct answers:

Virus Study Guide

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Name:

Virus Quiz

Multiple Choice
Identify the choice that best completes the statement or answers the question.

Viruses are considered nonliving because

a.	they cannot reproduce by themselves.
b.	they are not made up of cells.
c.	they cannot carry out metabolism by themselves.
d.	All of the above

The study of viruses is a part of biology because

a.	they belong to the kingdom Eubacteria.
b.	they are about to become extinct.
c.	they are living organisms.
d.	they are active inside living cells.

Biologists now know that viruses

a.	are the smallest organisms.
b.	consist of a protein surrounded by a nucleic acid coat.
c.	contain RNA or DNA in a protein or lipid-protein coat.
d.	all form the same crystalline shape.

The capsid of a virus is the

a.	protective outer coat.
b.	cell membrane.
c.	nucleus.
d.	cell wall and membrane complex.

Viruses are classified according to

a.	whether they contain RNA or DNA.
b.	the shape of their genome.
c.	whether they have a membrane envelope.
d.	All of the above

All viruses have

a.	cytoplasm.	c.	mitochondria.
b.	ribosomes.	d.	None of the above

Tobacco mosaic virus

a.	is able to be crystallized.
b.	causes disease in tobacco plants.
c.	is smaller than a bacterium.
d.	All of the above

Scientists first began to study viruses because they

a.	were seen through a microscope.
b.	could not be seen but caused disease.
c.	formed crystals.
d.	were made of cells.

Viruses that use reverse transcriptase to cause their host cells to transcribe DNA from an RNA template are called

a.	bacteriophages.	c.	retroviruses.
b.	antibodies.	d.	capsoviruses.

10.

Which of the following contains only RNA?

a.	a prion	c.	a viroid
b.	a virus	d.	All of the above

11.

Unlike viruses, prions

a.	are capable of reproducing outside of a host cell.
b.	are composed only of protein.
c.	can cause brain infections.
d.	can be treated with antibiotics.

12.

A typical virus consists of

a.	a protein coat and a cytoplasm core.
b.	a carbohydrate coat and a nucleic acid core.
c.	a protein coat and a nucleic acid core.
d.	a polysaccharide coat and a nucleic acid core.

13.

Refer to the illustration above. Which structure could possibly be made of RNA?

a.	structure 2	c.	structure 4
b.	structure 3	d.	structure 5

14.

Refer to the illustration above. Which structure is found outside the cell after the cell is infected?

a.	structure 1	c.	structure 3
b.	structure 2	d.	structure 4

15.

Viruses

a.	are cellular organisms.
b.	reproduce only in living cells.
c.	have nuclei and organelles.
d.	are surrounded by a polysaccharide coat.

16.

Animal viruses often infect only specific host cells because

a.	the virus must have the same DNA as the host cell.
b.	the host cell must have specific receptors for proteins on the virus surface.
c.	viruses have receptors for host cell glycoproteins.
d.	the enzymes of the virus can attach only to specific host cells.

17.

In which cell cycle(s) does viral DNA become integrated into the host cell’s DNA?

a.	lytic
b.	lysogenic
c.	neither lytic nor lysogenic
d.	both lytic and lysogenic

18.

Antibiotics are ineffective against viral infections because

a.	host cells protect the viruses.
b.	viruses have enzymes that inactivate the antibiotics.
c.	antibiotics interfere with cellular processes that viruses do not perform.
d.	viral protein coats block the antibiotics from entering the virus.

19.

Which of the following is not a viral disease of humans?

a.	hepatitis
b.	SARS
c.	shingles
d.	All of the above are viral diseases of humans.

20.

Which of the following is not linked to cancer?

a.	Ebola virus	c.	hepatitis B virus
b.	human papillomavirus	d.	Epstein-Barr virus

21.

Which of the following human activities is most closely associated with the emergence of viruses not previously seen in humans?

a.	absence of a vaccination program
b.	crowded living conditions
c.	clearing of forests for housing
d.	eating uncooked meat

22.

Most scientists think that early viruses originated from

a.	other viruses.
b.	existing cell parts.
c.	animals.
d.	spontaneous generation.

23.

HIV causes AIDS by

a.	converting a proto-oncogene to an oncogene.
b.	damaging a person’s blood vessels.
c.	destroying the covering of a person’s nerves.
d.	gradually destroying a person’s immune system.

24.

Which of the following is not a vector of viral diseases?

a.	mosquitoes	c.	prions
b.	ticks	d.	humans

25.

Which of the following has been the most successful at fighting viral diseases?

a.	vaccination	c.	drug therapy
b.	vector control	d.	Both a and b

26.

Most scientists believe that viruses first appeared on Earth ____ living cells appeared.

a.	after
b.	a very long time before
c.	at the exact time when
d.	immediately before

Completion
Complete each statement.

27.

The protein coat of a virus is called a(n) ____________________.

28.

Viruses can vary in size and ____________________.

29.

A virus that transcribes DNA from an RNA template is called a(n) ____________________.

30.

An enzyme called _________________________ manufactures DNA that is complementary to a virus’s RNA.

31.

____________________ are viruses that infect bacteria and have a polyhedral head and a helical tail.

32.

All viruses reproduce by taking over the reproductive machinery of a(n) ____________________.

33.

Viruses that infect a host cell and have their nucleic acid replicated but do not harm the host cell are in a(n) ____________________ cycle.

34.

The replication of a temperate virus includes the ____________________ cycle.

35.

The virus that causes AIDS is called _________________________.

36.

Some viruses are thought to induce ____________________, a disease characterized by uncontrolled cell division.

37.

The Ebola virus, the SARS virus, and hantavirus are examples of ____________________ viruses.

38.

In the ____________________ cycle, viruses destroy the host cell.

39.

Chickenpox and ____________________ are caused by the same virus.

Problem

40.

A new disease has suddenly appeared and scientists are trying to determine whether the disease agent is a virus or a bacterium. They collect the following information:

1.      The disease can be transmitted through the air.
2.      The disease agent is too small to be seen under a light microscope.
3.      There are no known antibiotics that are effective against the disease.
4.      The genetic material of the disease agent is DNA.
5.      The disease agent cannot be cultured using any known culture medium.

Is the disease agent most likely a bacterium or a virus? Explain your answer. Write your answer in the space below.

Category: My Classroom Material

Quiz – Biochemistry

Cell Quiz

DNA QUIZ

Diffusion Across Membranes

Virus Study Guide

	Cells!
	1. The door to your house is like the ___ of a cell membrane? phospholipid bilayer gated channel receptor protein recognition protein 2. The phospholipid bilayer of the cell membrane is like a(n): screen door plate glass window hot water heater oven 3. Facilitated diffusion ____ require energy and uses the help of ______ does, transport proteins does, cytoplasm does not, transport proteins does not, sodium pumps 4. A semi permeable membrane is stretched across a chamber filled with water. The membrane is only permeable to water. 60 mg of salt is added to the left side of the chamber. Which of the following will happen? water will move toward the right side salt will move toward the right side water will move toward the left side salt will move toward the left side 5. The lipid bilayer keeps the inside of the cell membrane: bipolar protein saturated dry wet 6. Which of the following could be found in BOTH the nucleus and the cytoplasm nucleolus ribosomes RNA both RNA & ribosomes 7. Amino acid chains built by the ribosomes then move to the: golgi apparatus lysosome endoplasmic reticulum mitochondria 8. Which of the following structures has a 9 + 2 arrangement? flagella ribosome mitochondria golgi apparatus 9. The centriole is most like the: lysosome flagella mitochondria chromatin 10. Which of the following is composed of a large and a small subunit? golgi apparatus endoplasmic reticulum mitochondria ribosome 11. A cell that is missing lysosomes would have difficulty doing what? digesting food storing energy packaging proteins moving cytoplasm 12. Which of the following cell parts is described as a “fluid mosaic”? chloroplast vacuole cell membrane endoplasmic reticulum 13. Some cells take in large molecules through the process of: protein synthesis endocytosis cytoplasmic streaming ATP 14. Which of the following organelles would NOT be found in a plant cell? chloroplast DNA food vacuole cell membrane Score = Correct answers: