1
vote
0answers
19 views

Why are there so many regulatory mechanisms in gene expression? [on hold]

first time posting here, apologies if this is a stupid question. I am a layman, so I might be ignorant to some already well-known or obvious concepts in biology. From what I understand, gene ...
1
vote
1answer
30 views

What is the difference between “genetic” and “hereditary”?

What is the difference between the adjectives "genetic" and "hereditary"?
0
votes
0answers
11 views

Affinity species between plant by protein [on hold]

How determination Affinity species between plant by protein electrophoresis?
0
votes
1answer
24 views

Storage of energy in muscles vs fat depos [on hold]

How does the body control, where consumed energy (fat, glucose) is stored? And what is its strategy? More specific: 1) How does the body control storing glucose in muscles and not as (subcutan) fat? ...
0
votes
1answer
20 views

Why is tRNA called an adaptor molecule?

All I know about adaptor is that it is a device that converts attributes of one electrical device or system to those of an otherwise incompatible device or system. Thank you.
1
vote
0answers
19 views

Do we perceive contrast colour patterns easily because of adaptation? [migrated]

I can understand that colours are just manipulation of our brain to light rays of different frequencies, amplitude, and wavelength. But we do feel easier to find a pattern on a thing which is of ...
1
vote
1answer
43 views

Coordinates of amino acids in a protein sequence [on hold]

In PDB format, the coordinates of each of the atoms are available. Are the coordinates for the amino acids available separately? As in say a protein sequence consisting of a chain of amino acids ...
0
votes
2answers
28 views

Variant VCF: AD vs DP?

In my VCF file from GATK, I have the following definitions for AD and DP. ...
0
votes
1answer
21 views

What is the current status of human cloning?

Human cloning is a very controversial subject. I had a professor at Uni whose subject was transgenics. He had a very successful career both in industry and in academia. We were kinda close and he ...
1
vote
0answers
22 views

Insulin and leptin action on Anorexigenic Neurons in Hypothalamus?

Receptors for Insulin are present on liver, adipose tissue and muscles BUT also Insulin Receptors are present in arcuate nucleus of hypothalamus where it influences anorexogenic neurons through IRS2 ...
7
votes
2answers
102 views
+100

Why do pink rain lilies flower only after rains, and not from being watered?

We have pink rain lilies (Zephyranthes carinata) in the garden. In my personal experience, I've found that they always flower, without exception, shortly after rains. However, there are roughly ten ...
1
vote
1answer
33 views

Why are both glucagon and cortisol released in hypoglycemia?

Cortisol is released in response to prolonged stresses; one situation when cortisol is released is when blood glucose level is low. In this situation cortisol acts on adipose tissue promoting fatty ...
0
votes
0answers
14 views

Biological difference in drugs vs drugs labeled as analytic standard?

I'm scaling up a project that uses ribavirin. Previously, I only had a need for small quantities, so I was prepared to pay a couple hundred dollars for ~50mg of pure chemical (Sigma - R9644). ...
7
votes
2answers
725 views

Are all quadrupeds edible? [on hold]

I wonder if all quadrupeds (or, mammals, at least), are edible? From what I have collected, even down to fish, everything is edible apart from being sick or infected, and, apart from some glands ...
-1
votes
0answers
22 views

Is there a particular state of performing a specific activity? [on hold]

This question is based on some of my own human activity, but lack of neurological and psychological knowledge, I am not able to deeply answer it. We rise by lifting others - Robert Ingersoll ...
3
votes
1answer
31 views

Is it possible to transfer acquired hemophilia with breast milk?

There is a transplacental form of acquired hemophilia: http://www.jpeds.com/article/S0022-3476%2895%2970132-X/abstract This disease is caused by polyclonal immunoglobulins (IgG1 and IgG4) against the ...
0
votes
1answer
29 views

do game animals have poor eyesight?

I have been watching some bow hunting videos on youtube. When hunting with a bow, the hunter needs to get really close to the animal, sometimes less than 10 meters. It seems to me implicitly, and ...
1
vote
1answer
46 views

What is the name of this green plant with thin leaves?

I've seen this in Scotland between Balmaha and Inversnaid: A higher resolution is here: https://commons.wikimedia.org/wiki/File:Balmaha-Inversnaid-9.jpg What is the name of this green plant with ...
0
votes
0answers
10 views

Hyperglycemia in Type 1 Diabetes?

Glucose transporters GLUT1, GLUT2, are always present in hepatocytes membrane and GLUT3 on brain cells but the glucose transporters for skeletal muscles, cardiac cells and adipose tissue are not ...
0
votes
1answer
4 views

Physical activity in fasted state: Glucose for brain vs muscles [on hold]

Let's consider this scenario: You do sports in the morning in a fasted state (i.e. without consuming any calories after waking). Your brain of course needs glucose and your liver probably still has ...
0
votes
0answers
14 views

ID for any of the following insects. Karnataka, India. May 2016 [on hold]

Please help with the identification of the beetles/ bugs/ whatever insects they are. Thanks!
-2
votes
1answer
34 views

What are the significances of chromosome mapping? [on hold]

The few point that I have come across are: The following are the significances of chromosome mapping: Chromosome maps help identify the location of gene of interest on a chromosome for genetic ...
-1
votes
2answers
29 views

What is gene density?

As per wikipedia definition, gene density is defined as: "In genetics, the gene density of an organism's genome is the ratio of the number of genes per number of base pairs, usually written in ...
0
votes
0answers
11 views

Requirements for In-Fusion Cloning Protocol?

I have some long primers I'd like to repurpose for an In-Fusion cloning project. The In-Fusion manual can be found here. They list a few examples of how the primers should match the vector, with 15 ...
-4
votes
0answers
15 views

Y chromosome in females? [closed]

Do females, girls or women have one or more Y chromosome in any of their trillions of nucleated cells?
0
votes
1answer
35 views

What are Codominant vs Dominant Genetic Markers?

When talking about types of genetic markers, the adjective "dominant" and "codominant" are often used. I don't fully understand their definitions and found contradicting definitions. Foll and ...
3
votes
1answer
79 views

How does a protein reach its substrate within the cell?

After a protein has been synthesized and its the final tertiary/quartenary adopted, how does it reach its substrate within the cell and what causes it to interact with it? The transcription factors ...
0
votes
1answer
14 views

Statistical genetics: Allele frequencies that follow a Dirichlet distribution

From Foll and Gagiotti (2008) (software BayeScan). They consider a model where several subpopulation are derived from a unique ancestral population. We consider a set of $I$ loci and let $K_i$ be ...
0
votes
0answers
19 views

Fate of Acetyl CoA in well fed state?

When we have eaten well and take fat rich diet then in this condition Acetyl CoA produced from fatty acid breakdown will be gone to storage in adipose tissue or not? If it will go for storage then why ...
1
vote
2answers
288 views

What is the name of this plant with small, 5-leaved divided pink blooms?

I found this in a forest in Karlsruhe (Germany). The blooms are pink and have 5 leaves. Each leave is divided into two parts. It is pink and has a diameter of about 1-2cm.
1
vote
1answer
51 views

Can magnetoreception occur in humans?

Magnetoreception is a sense which allows an animal to detect the Earth’s magnetic field in order to perceive direction, altitude, or location. Magnetoreception is present in bacteria, arthropods, ...
3
votes
1answer
122 views

What is the name of this about 5cm high, grey, Beanie shaped fungus?

I found those below some stone stairs in Germany. The grass gives you an impression of the size (I guess the grass is about 5-7cm tall)
1
vote
2answers
90 views

How do T-cells determine which cells they've already inspected?

From what I understand, T-cells are constantly traveling in the body, inspecting cells by looking for antigens. If they're self antigens, then the T-cell doesn't attack, whereas if they're non-self, ...
3
votes
0answers
19 views

Effect of ethanol and detergent on cell membranes problem

I am currently writing my biology report for an experiment I did on how ethanol and detergent affect the cell membrane. For my ethanol experiment, all went as expected BUT for my detergent experiment, ...
1
vote
1answer
31 views

Mangroves and desalination of sea water

I am not an expert but I guess that mangroves (or some other plants that thrive in sea water) perform some kind of desalination to extract fresh water from sea water. Is this true? If yes, What ...
1
vote
0answers
36 views

FitzHugh–Nagumo system with diffusion

I was studying the FitzHugh-Nagumo model with diffusion and I quite do not understand the meaning of it. If we consider the system without diffusion, \begin{equation}\label{FHN}\begin{cases} ...
1
vote
1answer
50 views

Nomenclature for mutations at specific nucleotide positions

I'm sure this is a basic question, but I couldn't find an answer anywhere. Let's say I'm provided with the location of a nucleotide as location as FGFR3:c.1843-35A>T. What does "1843-35" mean?
0
votes
1answer
22 views

What is the relationship between stroke volume of blood and ventricular end-diastolic volume? [closed]

I do know what each term means. That is, i know that stroke volume is: the volume of blood pumped by each contraction of a ventricle, while ventricular end-diastolic volume is: the volume of blood in ...
-1
votes
0answers
26 views

perception of time during sleep/dreaming [on hold]

Almost all of you might have observed at some point in your life that while sleeping, your brain creates a story matching to an external stimulus. Most of the times external stimulus is very short ...
2
votes
1answer
48 views

What would kill you first water or cola? [on hold]

After discussing this with some colleagues, I devised the theory that you could drink more coca-cola in a single sitting than you could water, without killing you. Defining the volume it would take ...
1
vote
0answers
17 views

Mechanism by which water flows through xylem

I was doing a Cambridge iGCSE past paper when I came across the question: Describe the mechanism by which water flows through the xylem I thought the correct answer would revolve around the ...
0
votes
0answers
14 views

Speciation : More rapid in sexual or asexual population [closed]

A similar species of plants exist at two altitudes. At higher altitudes where pollination is low, the plants reproduce asexually. Whereas at lower altitudes where there are pollinators cross ...
0
votes
0answers
12 views

burying food scrap in soil: aerobic or anaerobic reaction? [on hold]

I have been trying to avoid putting food scrap into trash so I have been burying them in the backyard. However, someone just asked me whether I was actually creating anaerobic reaction out of food ...
0
votes
0answers
18 views

Why brain swells after brain death? [closed]

Hot nose is a known symptom of probable brain death . I read that it happens due to cessation of blood flow to the brain from swelling. Or is hot nose sign only valid for death from intracranial ...
0
votes
1answer
35 views

Mendel Genetics: Homework question

I'm looking at a question right now about Mendel genetics..... Q) When Mendel crossed a large number of tall pea plants with short pea plants, all F1 plants were tall. The F2 generation was created ...
-1
votes
0answers
37 views

Sequence Scan for CRISPR- sgRNA design & scoring question [closed]

My lab is attempting to implement the Sequence Scan method from the publications "Sequence determinants of improved CRISPR sgRNA design" We have used the website referenced in the publication, ...
-1
votes
0answers
19 views

Most flawed organ in the modern human body? [closed]

Is the human brain the most flawed organ or just the last organ to be fully explained by medical science?
0
votes
0answers
20 views

Can i freeze in 40 degree warm water? [closed]

I remember someone telling me that you can freeze in water even if its above your body temperature? Not that I am scared but what if you're in a hot tube for 30 hours while eating and drinking ...
5
votes
1answer
49 views

Do two compatible tRNA codons bond together?

Can two tRNA with complementary anti-codons link together? For instance UUU with AAA. If not, why not?
-3
votes
0answers
42 views

How do cell organelles maintain their unique membrane composition?

Describe some of the ways that membranous organelles can maintain their unique compositions despite the continuous traffic of membranes and materials moving through them. This question is from Gerald ...

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