Biology, DNA
Three nucleotides code for:
1 amino acid
In RNA, _____ codon(s) translate to ______ amino acid(s)
1,1
If a DNA molecule is found to be composed of 40% thymine, what percentage of guanine would be expected.
10%
DNA replication results in:
2 DNA molecules that each contain a strand of the original
How many different amino acids are there?
20
Proteins contain ____ different amino acids, whereas DNA and RNA are composed of ___ different nucleotides
20,4
The diploid cells of an animal have 44 chromosomes. How many chromosomes would you expect to find in the animal's sperm cells?
22
After examining a karyotype of an animal, a researcher counts 50 individual chromosomes of varying sizes. How many homologs are in the karyotype?
25
How many different codons are possible?
64
The base pair rules states that:
A pairs with T, G pairs with C
The "rungs" of the DNA ladder are made of:
Bases
Given the following DNA strand, which of the following is its complementary mRNA? G G A C T G A T T
C C U G A C U A A
Once transcription has been completed, which of the following is NOT necessary for protein synthesis to occur?
DNA
The element that transformed the bacteria in Griffith's experiments was:
DNA
What did Frederick Griffith's discover?
DNA carried genetic information
Which of the following is required for DNA replication to occur?
DNA helicase DNA ligase DNA polymerase all of these
Which of the following must happen first in order for DNA replication to occur?
DNA is unwound, by helicase
What was the overall conclusion of the hershey-chase experiment
DNA was responsible for heredity
The Hershey-Chase research showed that:
DNA was the molecule of heredity
Before the Hershey-Chase experiment, many scientists believed that ____ carried the hereditary information.
Proteins
A DNA strand has the following bases: A A G C C A. What are the bases on its complimentary strand?
T T C G G T
The two men who established the structure of DNA are:
Watson and Crick
The two men who established the structure of DNA were:
Watson and Crick
A nucleotide consists of:
a nitrogen base, sugar, and phosphate
A nucleotide consists of:
a phosphate, a sugar, and a base
A gene is:
a segment of DNA that codes for a protein
The three nucleotides found in DNA will code for a single:
amino acid
Down's Syndome occurs when an invidual has:
an extra chromosome 21
Which site of the tRNA molecule binds to the mRNA molecule?
anticodon
Which of the following best describes the arrangement of the sides of the DNA molecule?
antiparallel
Translation begins:
at the start codon
The "rungs" of the DNA ladder are made of:
base pairs
In order to transform to a virulent form of bacteria, non encapsulated bacteria must:
be exposed to killed capsulated bacteria
The 5' and 3' numbers are related to the:
carbon rings in sugar
The three nucleotide sequence on RNA is called a:
codon
The purpose of mitosis is to:
create new cells
What is the long name for DNA?
deoxyribonucleic acid
The sugar found in DNA is:
deoxyribose
The twisted ladder shape of DNA is called a:
double helix
The twisted ladder shape of the DNA molecule is known as the:
double helix
A stretch of chromosome that codes for a trait can be called a(n):
gene
The enzymes that break hydrogen bonds and unwind DNA are:
helicase
The DNA molecule is held together by:
hydrogen bonds
The two sides of the DNA ladder are loosely bonded together by:
hydrogen bonds
DNA is called the "blueprint of life" because:
it contains the plans for building an organism
RNA differs from DNA in that:
it has a different kind of sugar it is single stranded it has uracil
Okazaki fragments form on the:
lagging strand
Okazaki fragments occur on the ___ and are bonded together by ______
lagging strand, ligase
Which of the following is NOT a necessary component of translation?
ligase
Which of the following takes the genetic code from the nucleus to the cytoplasm?
mRNA
Which of the following takes the genetic code to the cytoplasm:
mRNA
Transcription results in:
messenger RNA
Chromosomes line up on the equator during:
metaphase
In the ladder anology of the DNA molecule, the "rungs" of the ladder are:
paired nitrogenous bases
During replication, what enzyme adds complimentary bases?
polymerase
In the Hershey Chase Experiment, DNA was labeled with ____, and bacteriophage protein was labeled with _____.
radioactive phosphorous, radioactive sulfar
Okazaki fragments occur during:
replication
The process by which DNA makes a copy of itself is called:
replication
The sugar in RNA is _____, the sugar in DNA is _______
ribose, deoxyribose
Chromosomes are paired together based on their:
size banding pattern centromere location
The outside of the DNA ladder (the legs) is composed of alternating ___ and phosphates.
sugars
Adenine always pairs with:
thymine
The process by which RNA is made from DNA is called:
transcription
The process by which RNA is made from DNA:
transcription
RNA is synthesized on a DNA template in a process called ______, which utilizes the enzyme _______
transcription, RNA polymerase
Amino acids are joined together into a protein chain by which of the following?
transfer RNA
Which of the following is found on RNA but not DNA?
uracil
