WorksheetsChromosomes and DNA🧬
Total questions: 25
Worksheet time: 13mins
Chromosomes are composed of
70% protein and 30% DNA
60% protein and 40% DNA
50% protein and 50% DNA
40% protein and 60% DNA
A typical human chromosome contains _________ nucleotides in its DNA
140 Million
160 Million
240 Million
260 Million
Transfer of genetic material from one cell to another that can alter the genetic makeup of recipient cell is called
Variation
Transduction
Replication
Mutation
DNA has a helical shape with the diameter of
2 nm
3 nm
4 nm
5 nm
The true E.Coli replicating enzyme is
DNA polymerase II
DNA polymerase III
DNA polymerase I
All of these
The sequence of nucleotides that determines the amino acid sequence of a protein is
Chromosome
DNA
RNA
Gene
Central dogma is
Synthesis of all three types of RNA
Transfer of information from RNA to proteins
The basic mechanism of reading and expressing genes
Transfer of information from DNA to mRNA
In prokaryotes there are
A) Three types of DNA polymerases
B) One type of RNA polymerase
C) Three types of RNA polymerases
Both a and b
Human cell contains ______ different kinds of tRNA molecules
25
35
45
55
Point mutations are represented as
Insertions and inversion of gene
Presence of an extra chromosome
Loss of chromosome
Alteration in the sequence of DNA nucleotide
The strand of DNA which is not transcribed is called
Antisense
Template
Coding
None of these
Molecular basis of sickle cell anemia was found by
F. Sanger
Beadle and Tatum
Vernone Ingram
Mendal
Centromere represents
Quaternary constriction
Tertiary constriction
Primary constriction
Secondary constriction
X-Ray diffraction pattern of DNA was prepared by
Rosalind Franklin
Maurice Wilkins
Watson
Crick
In sickle cell Hb, which chain is affected?
Alpha
Beta
Both
None
The ends of the chromosome are called Telomeres.
True
False
What is the correct order to make a protein?
Protein, DNA, RNA
RNA, DNA, Protein
DNA, RNA, Protein
Protein, RNA, DNA
RNA must be edited before it can be used to make Proteins, what happens during this editing process?
A spliceosome cuts out exons, reconnects the introns
A spliceosome cuts out the introns, reconnects the exons
A splicesome pairs nucleotides with the DNA base pairs
The RNA is checked for typos
Where on the DNA strand does RNA polymerase attach?
Complainer
Enforcer
Promotor site (TATA box)
Polymerator
Capping is addition of _____ towards the 5' end of mRNA
Methyl cytosine
the GTP cap
GDP tail
poly - A tail
The triplet code, codon, that signals the start of a code in mRNA is __.
GGG
AUG
AUU
Did we do this already? yes, yes it is there...in your pogil
How many nucleotides make up a codon?
1
3
5
15
