SDSU BIO 100 EXAM 3 (EKDALE)
QUESTIONS AND ANSWERS
DNA is wrapped - Correct Answers -Around proteins to form chromatin
Chromatin twists and folds - Correct Answers -To form a chromosome
Where are chromosomes stored - Correct Answers -In the cell's nucleus
What are the building blocks of DNA - Correct Answers -nucleotides
What are the three parts of nucleotides - Correct Answers -1. Central 5-carbon sugar
2. Negatively charged phosphate
3. Best made of one or two rings of nitrogen and carbon
Four bases in a nucleotides - Correct Answers -Adenine (A), Thymine (T), Guanine (G),
Cytosine (C)
Nucleotides join together to create... - Correct Answers -A polynucleotide...with
alternating sugar and phosphate creating the "backbone"
Gametes - Correct Answers -Sex cells (egg & sperm cells)
Diploid - Correct Answers -- Two sets of chromosomes
- 46 chromosomes
Haploid - Correct Answers -- single set of chromosomes
- each gamete contains 23 chromosomes
Homologous pairs of chromosomes - Correct Answers -Two different chromosomes that
contain same gene loci but may have different alleles of a particular gene
DNA is made up of two polynucleotide strands - Correct Answers -True
Adenine(A) - Correct Answers -Always pairs with Thymine(T)
Cytosine(C) - Correct Answers -Always pairs with Guanine(G)
, Semi-conservative DNA replication - Correct Answers -Each new molecule conserves
half of the original molecule
What does semi-conservative property of DNA replication reveal - Correct Answers -
The process of heredity
DNA helicase - Correct Answers -Unzips two DNA strands forming an exposed bubble
DNA polymerase - Correct Answers -Builds a complementary DNA molecule to the
distinguishing strand... A-T and C-G
DNA ligase - Correct Answers -Joins the individual fragments...creates the final DNA
molecule
What similarities do DNA and RNA share - Correct Answers -Both are nucleic acids,
contain sugar, phosphate, and nucleotide base
Is DNA double stranded or single stranded? - Correct Answers -double stranded
Is RNA single or double stranded? - Correct Answers -Single stranded
What sugar is contained in DNA - Correct Answers -deoxyribose (think the D)
What sugar is contained in RNA - Correct Answers -Ribose (think the R)
What are the four bases in DNA - Correct Answers -A, T, C, G
What are the four bases in RNA - Correct Answers -A, U, C, G
Central Dogma - Correct Answers -DNA -> RNA -> Protein
DNA transcribes... - Correct Answers -Or codes RNA
RNA translates codes - Correct Answers -For proteins
Transcription - Correct Answers -DNA nucleotides are copied to make a complementary
RNA molecule
Translation - Correct Answers -Ribosomes read RNA sequence that contains genetic
info from DNA to synthesize amino acids which make proteins
Codons - Correct Answers -3 consecutive nucleotides that code for a specfic amino acid
Proteins are made up of - Correct Answers -Amino acids...hence it's overall shape and
function
QUESTIONS AND ANSWERS
DNA is wrapped - Correct Answers -Around proteins to form chromatin
Chromatin twists and folds - Correct Answers -To form a chromosome
Where are chromosomes stored - Correct Answers -In the cell's nucleus
What are the building blocks of DNA - Correct Answers -nucleotides
What are the three parts of nucleotides - Correct Answers -1. Central 5-carbon sugar
2. Negatively charged phosphate
3. Best made of one or two rings of nitrogen and carbon
Four bases in a nucleotides - Correct Answers -Adenine (A), Thymine (T), Guanine (G),
Cytosine (C)
Nucleotides join together to create... - Correct Answers -A polynucleotide...with
alternating sugar and phosphate creating the "backbone"
Gametes - Correct Answers -Sex cells (egg & sperm cells)
Diploid - Correct Answers -- Two sets of chromosomes
- 46 chromosomes
Haploid - Correct Answers -- single set of chromosomes
- each gamete contains 23 chromosomes
Homologous pairs of chromosomes - Correct Answers -Two different chromosomes that
contain same gene loci but may have different alleles of a particular gene
DNA is made up of two polynucleotide strands - Correct Answers -True
Adenine(A) - Correct Answers -Always pairs with Thymine(T)
Cytosine(C) - Correct Answers -Always pairs with Guanine(G)
, Semi-conservative DNA replication - Correct Answers -Each new molecule conserves
half of the original molecule
What does semi-conservative property of DNA replication reveal - Correct Answers -
The process of heredity
DNA helicase - Correct Answers -Unzips two DNA strands forming an exposed bubble
DNA polymerase - Correct Answers -Builds a complementary DNA molecule to the
distinguishing strand... A-T and C-G
DNA ligase - Correct Answers -Joins the individual fragments...creates the final DNA
molecule
What similarities do DNA and RNA share - Correct Answers -Both are nucleic acids,
contain sugar, phosphate, and nucleotide base
Is DNA double stranded or single stranded? - Correct Answers -double stranded
Is RNA single or double stranded? - Correct Answers -Single stranded
What sugar is contained in DNA - Correct Answers -deoxyribose (think the D)
What sugar is contained in RNA - Correct Answers -Ribose (think the R)
What are the four bases in DNA - Correct Answers -A, T, C, G
What are the four bases in RNA - Correct Answers -A, U, C, G
Central Dogma - Correct Answers -DNA -> RNA -> Protein
DNA transcribes... - Correct Answers -Or codes RNA
RNA translates codes - Correct Answers -For proteins
Transcription - Correct Answers -DNA nucleotides are copied to make a complementary
RNA molecule
Translation - Correct Answers -Ribosomes read RNA sequence that contains genetic
info from DNA to synthesize amino acids which make proteins
Codons - Correct Answers -3 consecutive nucleotides that code for a specfic amino acid
Proteins are made up of - Correct Answers -Amino acids...hence it's overall shape and
function
