Hb lab questions

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HB lab Question 1 Refers to the image below of a number of large nerve cell bodies surrounded by other supporting cells – you need to focus on the sub-cellular structure labelled A (ie. the dark red dot.) a. Identify the structure labelled “A” b. What is the function of the structure labelled “A”?

Transcript of Hb lab questions

HB labQuestion 1

Refers to the image below of a number of large nerve cell bodies surrounded by other supporting cells – you need to focus on the sub-cellular structure labelled A (ie. the dark red dot.)

a. Identify the structure labelled “A”b. What is the function of the structure labelled “A”?

1. Identify the cell component labelled “A”.2. What is term used to name the region of the cell labelled “B”.3. Within the region of the cell labelled “B” (but not resolvable in this image) name the organelle that produces ATP.4. Within the region of the cell labelled “B” (but not resolvable in this image) name the small organelle (about 25nm) that synthesises proteins.5. Within the region of the cell labelled “B” (but not resolvable in this image) name the organelle whose functions include sorting and packaging secretory products.6. Within the region of the cell labelled “B” (but not resolvable in this image) name the organelle that functions as the cells digestive system.7. Within the region of the cell labelled “B” (but not resolvable in this image) name the anastomosing network of membranes whose many functions include lipid metabolism and detoxification.8. Within the region of the cell labelled “B” (but not resolvable in this image) name the organelles that are membrane bound vesicles of various sizes containing material destined for degradation/digestion.9. Within the region of the cell labelled “B” (but not resolvable in this image) name the anastomosing network of membranes whose many functions include the synthesis of proteins for secretion.

1. Name the bright pink-stained structure labelled “A” (within the circular structure).2. What does the structure labelled “A” synthesize?

Question 4

1. What cell organelle produces ATP?2. What cell organelle sorts and packages synthetic products of the cell?

Question 5

a. Identify the structure labelled “A”

a. Identify the structure labelled “A”b. What is the function of the structure labelled “A”?

Question 7

a. Identify the structure labelled “A”b. What is the function of the structure labelled “A”?

Question 8

a. Identify the structure enclosed within the circle and labelled “A”b. Identify the structure labelled “B”c. Identify the structure labelled “C” ie. the pale region superimposed by the label “C”d. Identify the structure labelled “D”e. Identify the structure labelled “E”

Question 9

a. Identify the pale circular structure labelled “A”b. Identify the region of the cell labelled “B”

Question 10

a. Identify the dark material labelled “A”b. Identify the pale material labelled “B”c. Identify the region of the cell labelled “C”

Question 11

a. Identify the structure labelled “A”

Question 12

a. Identify the structure (small dot) labelled “A”b. Identify the structure labelled “B”c. Identify the region of the cell labelled “C”

Answers

Question 1

NucleolusCodes for ribosomal RNA

Question 2

NucleusCytoplasmMitochondriaRibosomeGolgi apparatusPhagosomeAER = Agranular (smooth) endoplasmic reticulumLysosomeGER = granular (rough) endoplasmic reticulum

Question 3

NucleolusCodes for ribosomal RNA

Question 4

MitochondriaGolgi apparatus

Question 5

Nucleus

Question 6

NucleolusCodes for ribosomal RNA

Question 7

MitochondriaSynthesises ATP

Question 8

Golgi apparatusMitochondriaNucleusNuclear membraneGER

Question 9

NucleusCytoplasm

Question 10

HeterochromatinEuchromatinCytoplasm

Question 11

GER

Question 12

NucleolusNucleusCytoplasm

1. The "father" of genetics is considered to be:

A) Charles Darwin

B) Gregor Mendel

C) Albert Einstein

D) Louis Pasteur

CLEAR

 2. A section of DNA that codes for one particular trait is referred to as one:

A) gene

B) chromosome

C) chromatid

D) nucleus

CLEAR

 3. If fur colour in mice is caused by the following: B = black and b = brown, choose the

genotype for the organism which will have brown fur.

A) BB

B) bB

C) bb

D) either answer A or B

CLEAR

 4. What is the name for the diagram one draws in genetics problems to determine the types

of offspring produced by crossing two parents?

A) karyotype

B) matrix

C) x vs y graph

D) Punnett square

CLEAR

 5. Down Syndrome (trisomy 21) is a genetic disorder in which the afflicted individual:

A) inherits one more gene than normal

B) inherits one less gene than normal

C) inherits one extra chromosome #21

D) inherits one less chromosome #21

CLEAR

 

6. Assume that in mice, B = black fur, b = brown fur. If a heterozygous black mouse mates with a homozygous brown mouse, what percent of their offspring will have black fur?

A) 25%

B) 50%

C) 75%

D) 100%

CLEAR

 7. Which event in meiosis involves the exchange of genetic material between

chromosomes?

A) crossing over

B) DNA replication

C) cytokinesis

D) amniocentesis

CLEAR

 8. Which of the following gives the correct order of stages in mitosis?

A) metaphase, prophase, anaphase, telophase

B) telophase, anaphase, prophase, metaphase

C) metaphase, prophase, anaphase, telophase

D) prophase, metaphase, anaphase, telophase

CLEAR

 9. The molecules on the red blood cell membranes that make up a person's blood type are:

A) phosphates

B) lipids

C) nucleotides

D) antigens

CLEAR

 10. Which of the following genotypes could NOT represent an individual with type B blood?

A) AB

B) BO

C) OB

D) BB

CLEAR

 11. Which one of the following would have a different phenotype from the others?

A) Rr

B) rR

C) rr

D) RR

CLEAR

 12. A female carrier for hemophilia would be indicated as:

A) XHXh

B) XHXH

C) XHY

D) XhY

CLEAR

 13. A male afflicted with hemophilia would be indicated as:

A) XHXh

B) XhXh

C) XHY

D) XhY

CLEAR

 14. Human body (somatic) cells contain ____ chromosomes; and the gametes (sex cells)

contain _____ chromosomes.

A) 23; 46

B) 46; 23

C) 46; 46

D) 23; 23

CLEAR

 15. An alternate form for a gene is called a(n):

A) allele

B) chromosome

C) chromatid

D) chromatin

 Genetic V Discussion Forum

1.  If white eye color is due to an X-linked recessive allele, then which are possible?

a. Homozygous recessive white females

b. White-eyed males

c. Heterozygous white-eyed females

d. Heterozygous white-eyed males

2.  Why were Thomas Hunt Morgan’s experiments important?

a. Showed nonsexual traits could be sex-linked

b. Results helped to explain why more men than women in a family have hemophilia

c. Showed that Mendel’s explanations of heredity were incomplete

d. Showed how a mutation can affect genders differently

3.  If a fruit fly has four linkage groups then it has:

a. Two pairs of homologous chromosomes

b. Four pairs of homologous chromosomes

c. Eight pairs of homologous chromosomes

d. Sixteen pairs of homologous chromosomes

4.  The relative position of genes on a chromosome can be done using:

a. Karyotyping

b. Linkage mapping

c. Punnett-square method

d. Monohybrid crosses

5.  Why can’t humans be used to do linkage mapping?

a. It is unethical

b. The generation time is too long

c. Diverse environments incorporate too much variation

d. Not enough offspring are produced

6.  For which of the following can daughters inherit from their fathers?

a. X-linked dominant

b. X-linked recessive

c. Autosomal dominant

d. Autosomal recessive

7.  The further apart two genes are at different locations on the same chromosome, the more likely they are to assort independently.

a. True

b. False

8.  An individual with aneuploidy can have:

a. One extra chromosome

b. One less chromosome

c. Colchicine cells

d. Pentaploid cells

9.  Human genetic disorders that occur through changes in chromosome number are determined by both the number of chromosomes present

and which chromosome are affected.

a. True

b. False

10.  If an individual has polyploidy then:

a. 99% chance of death before birth

b. One fewer chromosome than normal

c. One more chromosome than normal

d. Multiple sets of each type of chromosome

11.  What is it called when one or more pairs of chromosomes do not separate during meiosis or mitosis?

a. Nondisjunction

b. Ultraploidy

c. Aneuploidy

d. Linkage

12.  What causes Down syndrome?

a. Any one extra chromosome

b. Any one fewer chromosome

c. Being trisomic for chromosome 21

d. Being trisomic for chromosome 11

. If white eye color is due to an X-linked recessive allele, then which are possible?

Correct Answer: Homozygous recessive white females

Correct Answer: White-eyed males

2. Why were Thomas Hunt Morgan’s experiments important?

Correct Answer: Showed nonsexual traits could be sex-linked

Correct Answer: Results helped to explain why more men than women in a family have hemophilia

Correct Answer: Showed that Mendel’s explanations of heredity were incomplete

Correct Answer: Showed how a mutation can affect genders differently

3. If a fruit fly has four linkage groups then it has:

Correct Answer: Four pairs of homologous chromosomes

4. The relative position of genes on a chromosome can be done using:

Correct Answer: Linkage mapping

5. Why can’t humans be used to do linkage mapping?

Correct Answer: It is unethical

Correct Answer: The generation time is too long

Correct Answer: Diverse environments incorporate too much variation

Correct Answer: Not enough offspring are produced

6. For which of the following can daughters inherit from their fathers?

Correct Answer: X-linked dominant

Correct Answer: X-linked recessive

Correct Answer: Autosomal dominant

Correct Answer: Autosomal recessive

7. The further apart two genes are at different locations on the same chromosome, the more likely they are to assort independently.

Correct Answer: True

8. An individual with aneuploidy can have:

Correct Answer: One extra chromosome

Correct Answer: One less chromosome

9. Human genetic disorders that occur through changes in chromosome number are determined by both the number of chromosomes present and which chromosome are affected.

Correct Answer: True

10. If an individual has polyploidy then:

Correct Answer: 99% chance of death before birth

Correct Answer: Multiple sets of each type of chromosome

11. What is it called when one or more pairs of chromosomes do not separate during meiosis or mitosis?

Correct Answer: Nondisjunction

12. What causes Down syndrome?

Correct Answer: Being trisomic for chromosome 21