7.03 Fall 2003
1 of 6
Answer Key Problem Set 5
1. a) Genetic properties of gln2- and gln 3-:
Both are uninducible, as they give decreased glutamine synthetase (GS) activity.
Both are recessive, as mating them with wildtype produces normal GS activity.
EF-Tu is a paradigm for switches
See model on p. 8 of handout 3b
Initial (weak) binding k1/k-1
codon recognition k2/k-2 GTPase activation k3 GTP
hydrolysis kGTP EF-Tu conformational change k4 accommodation (k
7.03 Fall 2003
Problem Set #3 Solutions
Issued Friday, October 17, 2003
(a) We are analyzing mutagens that specifically induce GC AT mutations in
DNA. Therefore, we must determine the potential double stranded DNA sequences that
will encode stop codons
PROBLEM SET #2 SOLUTIONS 7.03
a) You will want to cross your true breeding black body and vestigial wings strain with a strain that is truebreeding for purple eyes. This will generate progeny that are heterozygous at all three loci, necessary
1. The theory behind the effectiveness of vaccines is, they work because vaccines
confer immunity. What is the process?
Vaccines are used to imitate disease agents and stimulate the immune system to fight
against diseases. It is an
Name: Joseph Tharakan III
Writing Assignment -5
Due Feb 22nd 2017, Wednesday 12:30 pm
A&P II Spring 2017 BIO 2120
1. What are two major muscles of respiration? What happen to these muscles during
breathing in and breathing out? (Whether
Chapter 22 Immune System and the Bodys Defense
1. Make sure you understand the general arrangement of the lymphatic system.
2. The lymphatic system consists of two semi independent parts. What are they?
Lymph vessels & lymphatic tissue
Questions for Chapter 18 Blood
1. What type of tissue is blood? The matrix of this tissue is what part of blood?
2. Describe the composition and physical characteristics of blood. What is the
normal pH range of blood? How much blood doe
Solution Key- 7.016 Problem Set 3
The following human pedigree shows the inheritance pattern of a specific disease within a family.
Assume that the individuals marrying into the family for all generations (except the parental generation) do not