92 Answered Questions for the topic molecular biology
What is the function of the RNA primer in DNA replication?
During DNA replication, RNA primase puts an RNA primer in the lagging strand. What is the function of this RNA primer? Why can't the enzymes put DNA fragments directly?
Follows
•
1
Expert Answers
•4
![]()
![]()
![]()
05/21/19
What makes DNA sticky-ends sticky?
When restriction enzymes jaggedly cut double stranded DNA it results in so called sticky ends. What is the substance that makes the DNA sticky?
Follows
•
1
Expert Answers
•1
![]()
05/14/19
Why is ATP the preferred choice for energy carriers?
Why is ATP the most prevalent form of chemical energy storage and utilization in most cells?
Follows
•
1
Expert Answers
•1
![]()
05/12/19
True or False. Complex molecules (macromolecules) are made by joining smaller molecules together using dehydration synthesis.
Follows
•
1
Expert Answers
•1
![]()
05/07/19
When running a gel, what could cause a standard to run "faster" than usual?
We are running a gel on the products of a restriction digest to determine the size of an insert. We know the vector backbone size should be ~2.9kb; however, the standard appears to be running too...
more
Follows
•
1
Expert Answers
•1
![]()
05/07/19
True or False. The gene is the basic unit of genetic information.
Follows
•
1
Expert Answers
•1
![]()
05/07/19
How do antioxidants affect human metabolism?
I'd like to know how antioxidants affect human metabolism and which ones are essential for metabolic processes.
05/05/19
True or False. Prokaryotic genes are often regulated in response to external signals such as nutrient availability.
Follows
•
1
Expert Answers
•1
![]()
05/01/19
The flow of genetic information is from DNA to RNA to protein, via the processes of transcription (TC) and translation (TL). This concept is known as the Central Dogma of molecular biology.
Follows
•
1
Expert Answers
•1
![]()
04/30/19
How does the body switch between aerobic and anaerobic respiration?
Lets take the case of a person doing heavy exercise. Aerobic respiration is taking place, but oxygen is about to be finished up. Glycolysis occurs, Krebs cycle finishes. Now NADH and...
more
04/20/19
True or False. In DNA, the bases pair A T and G C; this complementary base pairing is the key to storage, transfer, and use.
Follows
•
1
Expert Answers
•2
![]()
04/19/19
What is the relationship between the light and dark reactions of photosynthesis?
My main concern is why are the dark reactions (those that produce hexose) needed? As far as I understand, the sole purpose of photosynthesis is to synthesize carbohydrates, which are only used for...
more
Follows
•
1
Expert Answers
•1
![]()
04/18/19
A photosynthesizing mouse?
N. Shubin's *Your Inner Fish* makes the point several times that there is a lot of functional similarity between some seemingly remote gene cousins. If that needed reinforcing we have the...
more
Follows
•
1
Expert Answers
•1
![]()
04/18/19
Why do we have no enzyme to digest cellulose?
As we know, cellulose is the most abundant polysaccharide in nature. Why don't we have an enzyme to digest cellulose?
Follows
•
1
Expert Answers
•1
![]()
04/09/19
Is HSV-vector-mediated miRNA expression in dorsal root ganglia stable?
My question is on the following article: "*[Reduction of voltage gated sodium channel protein in DRG by vector mediated miRNA reduces pain in rats with painful diabetic...
more
Follows
•
2
Expert Answers
•1
![]()
Is there a double helix RNA?
I wonder what is its function and if it can be the genetic material for a living organism. If not, why?
Follows
•
1
Expert Answers
•1
![]()
04/05/19
What is the advantage of using plant-derived antibacterials rather than bacteria-derived antibacterials?
So obviously we have a big problem with antibiotic resistance. Most of our antibiotics originate from bacteria themselves (or are synthetic variations on scaffolds which originate from bacteria). I...
more
Follows
•
1
Expert Answers
•1
![]()
04/03/19
How do ion channels transport only specific ions?
Ion channels, such as $Na^+$ channels and $K^+$ channels, are higly specific for ion permeability. But how do these channels achieve and maintain this specificity? Like how does a $K^+$ channel...
more
Follows
•
1
Expert Answers
•1
![]()
04/02/19
True or False. Eukaryotic genomes may have a range of different types of repetitive sequences.
Follows
•
1
Expert Answers
•1
![]()
03/28/19
True or False. Genes in prokaryotes tend to be grouped together in operons, with several genes under the control of a single regulatory region.
Follows
•
1
Expert Answers
•1
![]()
03/27/19
True of False. Three important types of RNA are copy of RNA (cRNA), messenger RNA (mRNA), and transfer RNA (tRNA).
Follows
•
2
Expert Answers
•1
![]()
03/27/19
What is the functional and structural distinction between core (H2A, H2B, H3,H4) and linker(H1/H5) histones?
Many explanations of histone biochemistry isn't quite elucidating for the undergraduate student. How does histone structure (dimers, octomers) relate to their specific functions as core or linker...
more
Follows
•
1
Expert Answers
•1
![]()
03/27/19
In mitochondria, what is the mechanism by which electrons are transferred between different cytochromes?
And how is the energy gained from the lowering of the "energy level" of the electron used to generate the chemiosmotic gradient?
Follows
•
1
Expert Answers
•2
![]()
![]()
03/26/19
Does any molecule other than DNA have a double-helical structure?
DNA is known to have a double-helical structure. Do any other molecules have this structure?
Follows
•
1
Expert Answers
•1
![]()
Still looking for help? Get the right answer, fast.
Ask a question for free
Get a free answer to a quick problem.
Most questions answered within 4 hours.
OR
Find an Online Tutor Now
Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.
