bio nov 9 pt 3
What is the most likely location where ribosomes serve as sites for protein synthesis in a eukaryotic cell? Multiple choice question. within the cristae of the mitochondria attached to the Golgi body attached to the endoplasmic reticulum within the nucleus
er
The production and usage of a gene's product is called gene
expression
Rank the phases of translation in order of occurrence, beginning with the first phase at the top
initiation elongation termination
Select all of the following that are involved in translational initiation. Multiple select question. release factors initiator tRNA start codon stop codon mRNA
initiator tRNA start codon mRNA
Each ribosomal subunit is composed of rRNA and many
protein
Erwin Chargaff determined that the number of like guanine and adenine always equal the number of like cytosine and thymine.
purines and pyrimidines
Select all that apply Select the stages of translation. Multiple select question. termination replication initiation elongation ligation
termination initiation elongation
There are a total of 64 codons available in the genetic code. How many of these codons will code for a specific amino acid? Multiple choice question. 64 46 61 3
61
In the 1940s, scientists had concluded that the genetic material was most likely either or .
DNA or Proteins
The synthesis of new DNA double helix molecules from a pre-existing parent molecule is called Blank______. Multiple choice question. DNA replication DNA genesis translation transcription
DNA replication
The purpose of mRNA is to carry information from to the .
Dna to Ribosome
Select the findings of Erwin Chargaff regarding DNA composition. Multiple select question. C = T G = C G = A A = T pyrimidines = purines
G = C A = T pyrimidines = purines
Select the reasons why early molecular geneticists knew that the genetic material needed to be a stable molecule. Multiple select question. It must be copied during transcription. It needs to be replicated accurately. It must be able to pass from one generation to the next. It needs to exist at high temperatures.
It needs to be replicated accurately. It must be able to pass from one generation to the next.
In the 1940s, why was protein considered to be the source of genetic material? Multiple choice question. Proteins are easily denatured. Proteins contain 4 amino acids that act as the building blocks for the genetic information. Proteins contain 20 amino acids that can be sequenced in a variety of ways. Nucleic acids had not been discovered at that point.
Proteins contain 20 amino acids that can be sequenced in a variety of ways.
in the 1940s, why was protein considered to be the source of genetic material? Multiple choice question. Proteins contain 4 amino acids that act as the building blocks for the genetic information. Proteins are easily denatured. Nucleic acids had not been discovered at that point. Proteins contain 20 amino acids that can be sequenced in a variety of ways.
Proteins contain 20 amino acids that can be sequenced in a variety of ways.
What is the name of the enzyme complex responsible for synthesizing a new RNA molecule through nucleotide binding? Multiple choice question. RNA polymerase DNA polymerase DNA reductase RNA reductase
RNA polymerase
The enzyme that is responsible for catalyzing the process of transcription is called
Rna and polymerase
Which scientist's X-ray diffraction data helped to demonstrate the double helix structure of DNA? Multiple choice question. James Watson Rosalind Franklin Erwin Chargaff Francis Crick
Rosalind Franklin
Which of the following are the two new nucleotides that have been created by the company Synthorx? Multiple select question. H X Y Z
X Y
New synthetic nucleotides have been inserted into E. coli bacteria to increase the number of they can produce, which can help with the development of new drugs and other applications.
amino acids
Protein synthesis (translation) occurs at which of the following locations within eukaryotic cells? Select all that apply. Multiple select question. Golgi apparatus phospholipid bilayer cytoplasm rough endoplasmic reticulum nucleus
cytoplasm rough endoplasmic reticulum
Rosalind Franklin's X-ray diffraction photograph demonstrated that DNA Multiple choice question. contained base pairs. was a double helix. contained equal proportions of purines and pyrimidines. used a triplet code for storing information. was formed from nucleotides.
double helix
Which organism would have the most complex control of gene expression? Multiple choice question. archaea bacteria fungi
fungi
elect the characteristics of translation. Multiple select question. involves ribosomes results in a protein product involves RNA polymerase occurs in eukaryotic nuclei involves an mRNA molecule
involves ribosomes results in a protein product involves an mRNA molecule
Which molecule carries genetic information from the DNA to the ribosome? Multiple choice question. mRNA DNA tRNA rRNA
mRNA
Which of the following are components of a nucleotide? Multiple select question. nitrogen-containing base amino acid pentose sugar phosphate lipid chain
nitrogen-containing base pentose sugar phosphate
select the characteristics researchers suspected the genetic material would have prior to the discovery that the genetic material was DNA. Multiple select question. passes from one generation to the next uses a triplet code ability to store information accurate replication comprised of nucleotides
passes from one generation to the next ability to store information accurate replication
Select all that apply Which of the following are components or structures of a ribosome? Multiple select question. ribosomal RNA large subunit DNA protein small subunit transfer RNA
ribosomal RNA large subunit protein small subunit
During initiation, Multiple choice question. the polypeptide is released from the ribosome. the DNA unwinds and unzips. amino acids are brought to the ribosome sequentially. the ribosomal subunits assemble.
the ribosomal subunits assemble.
Molecules of mRNA, tRNA, and rRNA are produced by the process of
transcription
The process by which an RNA strand is synthesized from a DNA template strand is called
transcription
The production of mRNA from a DNA template occurs during Multiple choice question. transcription. translation. Reason: Translation is the process whereby ribosomes use the sequence of codons in mRNA to produce a polypeptide with a particular sequence of amino acids. replication. termination.
transcription
The genetic code is said to be a(n) code, because a set of three nucleotide bases codes for a particular amino acid.
triplet
True or false: All three major types of RNA are produced by transcription of DNA. True false question.TrueFalse
true