BIO 135 Lecture Notes - Lecture 3: Helicase, Chromosome, Thymine

13 views4 pages

magentayellowjacket825

26 Apr 2021

School

U of M Flint, UM Flint

Department

Biology

Course

BIO 135

Professor

Cindy Holtzer

For unlimited access to Class Notes, a Class+ subscription is required.

Document Summary

I dna replication (pg 210) we will look at prokaryotic dna replication. In eukaryotes, it is much more complex with many more enzymes and other special proteins. 2" carbon no hydroxyl group, just hydrogen atoms. Single ring structure i. thymine (t) ii. cytosine (c) A purine hydrogen bonds with a pyrimidine maintains the symmetry of the entire double helix a. a-t form two hydrogen bonds between them b. c-g forms three hydrogen bonds between them. Since this sequence is repeated throughout the molecule, we only indicate the base attached to that particular nucleotide when writing out the dna or rna strand in question. In molecular biology, there are rules as to which strand is used. E. the 5" and 3" ends (review) the 5" end has the phosphate group attached to the 5" carbon on the sugar (deoxyribose). The 3" end has the oh group attached to the 3" carbon.

Related Questions

Respond to each sentance with true or false regarding the replication of DNA:

Complementary base pairing relies on the number of hydrogen bonds that each base can make.

In a single nucleotide, the phosphate group is attached to the 5' carbon of the sugar unit.

The antiparallel arrangement of double-stranded DNA is due to the phosphate group being bonded to the 3' carbon on one strand and the 5' carbon on the complementary strand.

The phosphate attached to the 5' carbon of a given nucleotide links to the 3' -OH of the adjacent nucleotide.

The -OH group on the 3' carbon of the sugar unit is the attachment site for the nitrogenous base.

rubyclam664

1. Unlike DNA, RNA contains

deoxyribose

a double strand

phosphates

uracil

Nucleic acid structure

2. In transcription, uracil will bond with:

thymine

cytosine

adenine

guanine

Transcription

3. The first team of scientist to document the structure of DNA was:

Franklin and Wilkins

Watson and Crick

Pauling and Chargoff

None of the above

DNA structure

4. Organelles that synthesize protein are:

lysosomes

ribosomes

endoplasmic reticulum

golgi bodies

5. Most of the time in a cell's life, it's DNA is in the form of:

Chromatin

Chromatids

Replicated chromosomes

Spindle fibers

6. Uracil is a nitrogen base that pairs with adenine. Using this information, one could conclude that uracil is a:

Purine

Pyrimidine

Neither a purine or pyrimidine

Not enough information

7. a nucleotide does not consist of a:

polymerase

5-carbon sugar

phosphate group

nitrogen base

8. The genetic code in DNA of an individual depends on the sequence (order) of:

nucleotides

purines only

phosphates

sugars

9. Before a cell divides, it must duplicate its DNA in a process known as:

translation

transformation

transcription

replication

10. The basic unit (building block) of a protein is a (an):

carbohydrate

amino acid

lipid

hydrogen bond

11. Unlike DNA, RNA contains:

deoxyribose

a double strand

phosphates

uracil

12. The structure of DNA was first documented in:

1945

1953

1956

1962

13. In DNA replication, the new molecules produced are:

of unequal length

both assembled in the same direction

built with purines as the backbone

assembled in opposite directions

DNA replication

14. The "backbone" of DNA is composed of:

ribose and phosphates

deoxyribose and phosphates

ribose and uracil

deoxyribose and thymine

DNA structure

15. RNA differs from DNA in which of the following ways?

RNA is single-stranded

RNA contains ribose

RNA does not contain thymine

All of the above

DNA structure

16. Which of the following is NOT required for the transcription process itself?

RNA polymerase

DNA

uracil-containing nucleotides

ribosomes

skyhamster121

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

BIO 135 Lecture Notes - Lecture 3: Helicase, Chromosome, Thymine

Document Summary

Get access

Related textbook solutions

Molecular Cell Biology

Biology: Science for Life with Physiology

Biology

Concepts of Biology

Essentials of Biology

Related Documents

BIO 135 Lecture Notes - Lecture 2: Balantidium Coli, Necator Americanus, Plasmodium Malariae

BIOL 112 Chapter Notes - Chapter 3: Nitrogenous Base, Complementary Dna, Pentose

BIOL 112 Chapter Notes - Chapter 3: Pentose, Nitrogenous Base, Nucleic Acid Double Helix

Related Questions