-
how many standard amino acids are there?
D. 20
-
the formation of alpha helix and beta pleated sheets represent what type of protein structure?
B. secondary
-
what gives an amino acid its identity?
A. R group
-
interactions between R grous are the cause of _________ structure
B. tertiary
-
the order of amino acids joined together in a protein chain is called the proteins ________ structure
C. primary
-
what is the name of the enzyme found in the transcription complex that is responsible for reading the DNA template and synthesizing the mRna strand?
B. RNA polymerase
-
in the lac operon the repressor binds to what part of the DNA, blocking the polymerase from transcriving the 3 lactose genes?
D. promoter
-
a tail is added to an mRNA during processing to help it do what?
C. leave the nucleus
-
the TATA box is located where in the eukaryotes?
D. promoter
-
when 2 or more tertiary proteins work together in a protein complex that is defined as what type of structure?
A. quaternary
-
proteins comose 50% of the dry weight of all living matter
a.true
b.fase
a. true
-
all proteins have primary, secondary, tertiary, and quaternary structure
a.true
b.false
b. false
-
hydrogen bonding along the backbond of an amino acid chain is responsible for the tertiary of globular shape of most proteins
a.true
b. false
b. false
-
amino acids are joined by ionic bonds
a. true
b. false
b. false
-
translation occurs in the nucleus of eukaryotic cells
a.true
b. false
b. false
-
eukaryotic gene regulation is more complex than prokaryotic reguation
a. true
b. false
a. true
-
the cap added to the mRNA during processing helps the mRNA bind to the ribosome
a. true
b. false
a. true
-
transcription factors are responsible for bringing the enjancer and promoter together to initiate transcription
a. true
b. false
a. true
-
codons are found on tRNAs
a. true
b. false
b. false
-
introns never leave the nucleus of Eukaryotes
a. true
b. false
a. true
-
_____ are double ringed bases
purines
-
the shape of a molecule of DNA is called a ___
double helix
-
the end result of DNA replication are 2 strands of identical____
DNA
-
thymine always bonds with ____
Adenine
-
single ring tirogen bases are called____
pyrimidines
-
the enzyme _____ joins the okazaki fragments at the end of DNA replication
DNA ligase
-
the basic building block of a DNA molecule is a _______
nucleotide
-
sugar, nitrogen containing bases, and _____ make up a nucleic acid
phosphate
-
the sugar found in DNA is called_____
Deoxyribose
-
the enzyme ____ adds DNA bases to form a new strand of DNA
DNA polymerase
-
the two strands of DNA run in different direction(5' -3', and 3' -5') and are said to be______
anti-parallel
-
the ________ is the side of the DNA ladder that is being copied in a continuous manner.
leading strand
-
the ______is the side of DNA ladder that is copied discontinuously
lagging strand
-
the protein that helps the DNA polymerase stay attached to the template strand is called the_____.
B. sliding clamp
-
the proteins that are responsible for keeping the DNA from reforming into the double helix are called____
C. single stranded binding protein
-
the enzyme that removes the RNA primer during DNA replication is called____.
C. RNase H
-
the protein responsible for unwinding the double helix structure of DNA is called____
A. helicase
-
RNA primase lays down the RNA primer during DNA replication, why?
C. both a and b
-
hershy and chase used radioactive culfur to label the _____ and the radioactive phosphorous to label ____of the virus
A. DNA, protein?
-
which of these did not kill the mice when injected into them during griffiths experiment?
C. live R bacteria?
-
in avery's experiment the celled that had their _____ destroyed by enzymes could still reproduce
a.DNA
b proteins
c. lipids
d. carbohydrates
b. proteins
-
semiconservative replication uses each "parent" strand as a template to synthesize a new "daughter" strand
a.true
b.false
a. true
-
Griffith proved that DNA was the genectic material
a. true
b. false
b. false
-
the sliding clamp increases DNA polymerases ability to join nucleotides
a. true
b. flase
a. true
-
chargaff's rule states that A pairs with G and C pairs with T
a. true
b. false
b. false
-
DNA is the genetic material
a. true
b. false
a. true
-
DNA polymerase synthesizes DNA is a 3' to 5' direction
a. true
b. false
b. false
-
there are no chemical bonds joining the two trands of DNA in a double helix
a.true
b. false
a. true
-
the krebs cycle takes place in the cytoplasm of all cells
a. true
b. false
b. false
-
proteins are broken down in the stomach
a. true
b. false
a. true
-
CO2 is produced in the Krebs cycle
a. true
b. false
a. true
-
Lactic acid fermentation produced CO2
a. true
b. false
a. false
-
cells only use ATP energy for their chemical reactions
a. true
b. false
a. true
-
the gall bladder makes bile
a. true
b. false
b. false
-
4 net ATP are made from glycolysis
a. true
b. false
b. false
-
the reaction of cellular respiration produces water(H2O)
a. true
b. false
b. false
-
Glycolysis is an aerobic process
a. true
b. false
b. true
-
only heterotrophs do cellular respiration
a.true
b. false
b. false
-
the first step of Glycolysis requires the input of what molecules
B. ATP
-
what is the goal of fermentation
A. recycle NAD+
-
where in the cell is the electron transport chain located
C. inner mitochondrial membrane
-
how many ATP are produced in one turn of the Krebs cycle?
D. 1
-
the enzyme that breaks down lipids is called?
A. lipase
-
what is the major function of the large intestine
B. water removal
-
where are lipases produced?
C. pancreas
-
where is the enzyme that breaks down carbohydrates found?
B. the saliva
-
what is the name of the enzyme that creates ATP in the electron transport
A. ATP synthase
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