This tag indicates that the question targets some basic concept or information that might seem trivial to professionals and can be seen as a home assignment in biology-related university courses. Please see the homework policy on meta before asking homework questions.
1
vote
1answer
679 views
Which enzyme catalyzes transcription and which translation?
My attempt:
Transcription - RNA polymerase
Translation - aminoacyl tRNA synthetase
I know that the ribosome almost runs translation, but I don't think ribosomes are enzymes, which is why I went ...
1
vote
1answer
98 views
Are Bovine serum albumin, Avidin, Ficoll-70 and Dextran-70 positively charged or negatively charged?
Bovine serum albumin, Avidin, Ficoll-70 and Dextran-70,are they
positively charged or negatively charged ? And which other solvents can be used as a substitute to water for preparing solutions in each ...
1
vote
1answer
84 views
How to manufacture different sized micelles in nano -scale?
I am trying to answer q5:
"How can you manufacture micelles in A) nanometerer -scale B) and in ten nanometer -scale?"
My Thinking
Observations and some thinking
Oil in ...
1
vote
0answers
41 views
Polymerase Observations
DNA polymerase I (PolI) contains polymerase, 3'-5' exonuclease, and 5'-3' exonuclease activities in a single polypeptide chain of molecular weight 109 kDa. If E. coli Pol I is exposed to the protease ...
1
vote
0answers
25 views
How could a pure culture be represented by more than one ssu rRNA sequence?
Your lab works on an organism isolated from radioactive waste. However, you show that 3 very similar, but not quite identical, ssu-rRNA sequences can be amplified from the culture even though it is ...
1
vote
0answers
34 views
How many pandemic H1N1 2009 virus sequences were submitted by the Indian NIV as of May 10, 2010? [closed]
The handout I was following is maddening. It says; "Go to the NCBI home page and select 'All Resources (A-Z)' and choose GenBank. Follow the NCBI Flu Resource link to determine how many pandemic H1N1 ...
1
vote
0answers
70 views
How to find Dmax (genetics problem) [closed]
My attempt: I'm not sure this is right but this is what i did. I found the allele frequencies to be:
A=0.4
B-0.3
a=0.1
b=0.2
I think to find Dmax I just multiply the two alleles with the larges ...
1
vote
1answer
137 views
Is this mammalian embryo blastocyst, gastrula or only phase between them?
The picture shows the formation of early blastocyst and late blastocyst.
The middle embryo has embryoblast.
My professor says that blastocyst in general has embryoblast and trophoblast.
Embryoblast ...
0
votes
1answer
67 views
Number of reading frames in nucleotide sequence
In class of molecular biology was posed this question:
"How many reading frames start in sequence of nucleotides 5' ... ATATGAATGATGACAT... 3' ?"
0
votes
1answer
69 views
How to classify equilibrium points [closed]
I have the two differential equations:
$$\frac{dN_1}{dt} = N_1(2 - N_1 - 2N_2)$$
$$\frac{dN_2}{dt} = N_2(3 - N_2 - 3N_1).$$
I worked out the equilibrium points to be at $N_1 = 0, \frac{4}{5}$ and ...
0
votes
2answers
49 views
Deterministic model of lambda-phage lysis/lysogeny [MATLAB]
Project 1 Base:
Can someone please help me understand what I need from Project 1 Base code to do questions 1 and 2 from the first image? I'm new to MATLAB so a thorough explanation would be ...
0
votes
1answer
20 views
Diffusion Question (in cell membrane)
I got this question and don't really understand the difference between the answers.
Diffusion is (in cell membrane):
a) passive by nature, no metabolic energy is needed
b) driven process by ...
0
votes
2answers
76 views
Recent and good quality articles on systems biology [closed]
I'm a biotechnology student and I have to write a sort of non-experimental thesis (30 pages long) within the end of a three years study.
I'm very interested in the "systems biology" field and I'm ...
0
votes
0answers
50 views
Analysis of cDNA samples from brain with suspected measles inclusion body encephalitis
I have been given the following question as an assignment but I am not sure what exactly the results mean:
You have been given brain biopsies from 5 patients with suspected measles inclusion body ...
0
votes
0answers
42 views
Bradford Protein Assay [closed]
Please would somebody help me to solve the following exercise:
Determine the protein concentrations of the four unknown samples (A,B,C,D) using the raw data obtained from a Bradford assay.
...
-5
votes
1answer
133 views
DNA chip contains a complete set of random hexanucleotide (6-mers) probes? (Solve) [closed]
can you tell me how to find solution to this question
A DNA chip contains a complete set of random hexanucleotide (6-mers)
probes. Out of the 4^6 = 4096 probes, how many will form perfect
...
