Bases
DNA has how many nitrogenous bases?
4
The sugar in DNA is made up of 5 carbons, what is the specific name for this 5-carbon sugar in DNA? (Hint: the D in DNA)
deoxyribose
What is the process called when DNA (a double helix) separates to makes RNA?
Replication
Cancer is a disorder in which some cells have lost the ability to
a control their spindle fiber formation.
b control their protein synthesis process.
c control cell division.
d control their surface area.
c control cell division.
Which of the following is a correct statement about the events of the cell cycle?
a DNA replicates during cytokinesis.
b Interphase is approximately 80% of the cell cycle
c Little happens during the G1 and G2 phases.
d The M phase is usually the longest phase.
b Interphase is approximately 80% of the cell cycle
The sequence of bases on one strand of a DNA molecule is ATTGCCCATG.
What will be the sequence on the complementary strand of DNA?
TAACGGGTAC
DNA is which of following organic molecules?
A) A lipid
B) A carbohydrate
C) A protein
D) A nucleic acid
D) A nucleic acid
What nitrogenous base in a genetic code indicates the nucleic acid is RNA?
a uracil
b guanine
c cytosine
d adenine
Which of the statements below is true?
a Cells spend the least amount of time in G2 phase.
b Cells spend most of their time preparing for cell division.
b. Cells spend most of their time preparing for cell division.
When during the cell cycle is a cell’s DNA replicated?
a Interphase
b Cytokinesis
c Anaphase
d Telikinesis
c Anaphase
How many nucleotides are needed to specify three amino acids?
a 3
b 6
c 9
d 12
a. 3
DNA stands for ___________________________
deoxyribonucleic acid
What is the correct order of the transfer of information in most organisms?
a protein to DNA to RNA
b RNA to DNA to protein
c DNA to RNA to protein
d RNA to protein to DNA
c DNA to RNA to protein
DNA nucleotides are made up of three components:
1. A sugar 2. A phosphate 3. A nitrogen base
As a result of mitosis, each of the two new cells produced from the original cell:
a is genetically identical to the original cell.
b donates a chromosome to the original cell.
c receives exactly half the chromosomes from the original cell.
d receives a few chromosomes from the original cell.
a. is genetically identical to the original cell.
Describe where the weak hydrogen bonds are located on DNA
The weak hydrogen bonds are...
like rungs on a ladder connecting the two winding sides of the DNA.
The type of bond that holds base pairs of DNA together is? (Hint: The weaker one)
hydrogen bond
Name the nitrogenous bases that make up RNA
uracil, guanine, cytosine, adenine
DNA has a specific shape called a _____________________, which can be described as a twisted ladder.
Double Helix
What is produced during transcription?
a RNA
b DNA molecules
c proteins
d lipids
a. RNA
Which of the following forms a base pair with thymine?
a deoxyribose
b adenine
c guanine
d cytosine
b adenine
True/False: DNA exists normally in your cells as a single-strand of nucleotides, having one backbone connected to nitrogenous bases.
False (DNA is double-stranded)
Why does transcription have to occur in order for mitosis to be completed? In other words what is the advantage on RNA being single stranded
DNA cannot pass through a cell membrane as it is too big to cross the membrane, where as single stranded RNA is small enough to fit through cell membrane openings.
Put these stages of mitosis in order:
Telophase, Anaphase, Prophase, Metaphase
Think-PMAT!
Prophase
Metaphase
Anaphase
Telophase
What happens during translation?
a mRNA is made from DNA code
b The cell uses an mRNA code to make proteins
c tRNA is made from a mRNA
d Copies of DNA molecules are made.
b The cell uses an mRNA code to make proteins