BIOA01H3 Lecture Notes - Meiosis, Mendelian Inheritance, Microtubule

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9 May 2013

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Dna: dna is important to the human body because it provides the instructions for life. It is an instruction maual that builds and contains all the information in our bodies. Without it, everyone would look the same and so, it is responsible for making individuals: dna is a biolgical moelcule called a nucleic acid. 3 smaller molecules make up dna which include deoxyribose sugar, phosphate and the nitrogenous bases of adenine, thymine, These can beany nitrogeneous base along with sugar deoxyribose and any phosphate group: the human genome project has allowed the development of genetic tests to screen for genetic diseases. We can see dna mutations in genes and therefore identify problems, which is huge in creating the future medicine and cures for human dieases and mutations. Cell division: somatic cells are body cells while gametes are sex cells. Gametes are found only in reproductive organs and each have 23 chromosomes.

Related Questions

The term replication refers to DNA's abilityto

a. attack bacteriaphages

b. make copies of itself

c. respond to X-ray photography

d. twist into a helix

Meselson and Stahl performed thedensity-gradient centrifugation of DNA in a solution of calciumchloride.

a. True

b. False

Sulfur is

a. found in bacteria but not viruses.

b. found in proteins but not nucleic acids.

c. found in nucleic acid but notproteins.

d. found in viruses but not bacteria.

e. needed for bacteriophages to attach tobacteria.

Chargaff's rule state that in DNA, the amount ofadenine equals

a. the amount of cytosine

b. the amount guanine

c. the amount of thymine

d. the amount of guanine and thymine

Each complete turn of the DNA helix is howlong?

b. 5.0 nm

Griffin did an experiment in which live Rbacteria was changed by dead S bacteria. Such a change is anexample of

Select one:

a. translocation

b. transformation

c. transduction

d. fertilization

One of Chargaff's rules state

a. A + T = G + C

b. A + G = T + C

c. A = G, T = C

d. A = C, T = G

The diameter of the DNA ladder is always

c. 2.0 nm

Which of the following is a purine base?

b. malomine

According to the base pairing rules, guaninebinds with

a. guanine

b. adenine

c. thymine

d. cytosine

Which of the following is a pyrimidinebase?

Select one:

a. colchicines

b. guanine

c. adenine

d. None of the answers

e. thymine

Each nucleotide in a DNA molecule is constructedof

Select one:

a. a phosphate group, a five carbon sugar, and anitrogen base

b. a phosphate group, a six carbon sugar,and a nitrogen base

c. a phosphate group, a five carbon sugar, and aoxygen base

d. a sulfur group, a five carbon sugar molecule,and a nitrogen base

champagneant40

The term replication refers to DNA's abilityto

a. attack bacteriaphages

b. make copies of itself

c. respond to X-ray photography

d. twist into a helix

Meselson and Stahl performed thedensity-gradient centrifugation of DNA in a solution of calciumchloride.

a. True

b. False

Sulfur is

a. found in bacteria but not viruses.

b. found in proteins but not nucleic acids.

c. found in nucleic acid but notproteins.

d. found in viruses but not bacteria.

e. needed for bacteriophages to attach tobacteria.

Chargaff's rule state that in DNA, the amount ofadenine equals

a. the amount of cytosine

b. the amount guanine

c. the amount of thymine

d. the amount of guanine and thymine

Each complete turn of the DNA helix is howlong?

b. 5.0 nm

Griffin did an experiment in which live Rbacteria was changed by dead S bacteria. Such a change is anexample of

Select one:

a. translocation

b. transformation

c. transduction

d. fertilization

One of Chargaff's rules state

a. A + T = G + C

b. A + G = T + C

c. A = G, T = C

d. A = C, T = G

The diameter of the DNA ladder is always

c. 2.0 nm

Which of the following is a purine base?

b. malomine

According to the base pairing rules, guaninebinds with

a. guanine

b. adenine

c. thymine

d. cytosine

Which of the following is a pyrimidinebase?

Select one:

a. colchicines

b. guanine

c. adenine

d. None of the answers

e. thymine

Each nucleotide in a DNA molecule is constructedof

Select one:

a. a phosphate group, a five carbon sugar, and anitrogen base

b. a phosphate group, a six carbon sugar,and a nitrogen base

c. a phosphate group, a five carbon sugar, and aoxygen base

d. a sulfur group, a five carbon sugar molecule,and a nitrogen base

skybeaver431

QUESTION 1. Compared to eukaryotic genomes, only prokaryotic genomes:

A. contain DNA organized by histones.

B. contain usually one, circular chromosome.

C. contain plasmid DNA.

D. have chromosomes contained in a nucleus.

QUESTION 2. Azathioprine is a drug that may be prescribed to transplant recipients to reduce the chance of tissue rejection reactions. In its active state, it acts as a purine analogue, inhibiting DNA biosynthesis. This means that 6-mercaptopurine will be inserted in place of a purine containing nucleotides during DNA replication. Given this drug's mode of action, you would expect it to be incorporated into DNA in place of:

A. nucleotides containing guanine or cytosine.

B. nucleotides containing adenine or thymine.

C nucleotides containing adenine or guanine.

D. nucleotides containing guanine nucleotide or uracil.

QUESTION 3. RNA is distinguished from DNA because only RNA:

A. typically exists as a single-stranded molecule.

B. has a 3' to 5' directionality.

C. is composed of nucleotides that contain the sugar deoxyribose.

D. is composed of nucleotides that contain the nitrogen bases T, C, G, and A.

QUESTION 4. How are RNA nucleotides different from DNA nucleotides? To be marked correct, you'll need to select all true statements, as there may be more than one correct answer.

A. RNA nucleotides do not contain thymine.

B. RNA nucleotides use the sugar ribose, while DNA nucleotides do not.

C. RNA nucleotides lack phosphate.

D. RNA nucleotides incorporate pyrimidine nitrogen bases, while DNA nucleotides only incorporate purine nitrogen bases.

BIOA01H3 Lecture Notes - Meiosis, Mendelian Inheritance, Microtubule

BIOA01H3 Full Course Notes

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