1
vote
0answers
3 views

Have traditional categories such as phylum, class, genus, been dispensed with in modern taxonomy?

Looking through the one zoom and EOL projects I see no reference to such categories.
0
votes
0answers
5 views

Where can I find a comprehensive delineation of the animal kingdom with all its subclassifications? [duplicate]

Ideally I would like to see a mind map like structure but a linear representation would also be fine. If the periodic table is the touchstone of chemistry where is the biological equivalent and what ...
0
votes
0answers
6 views

How is the timing of gene expression controlled in developing embryo?

I understand how cell differentiation works in general (gradients of homeobox proteins etc), but how is timing controlled? Why do some genes switch on at a very specific moment of development and then ...
0
votes
0answers
5 views

Could cyanobacteria thrive with very high CO2 concentrations and almost no oxygen to start with?

Have there been experiments to see if cyanobacteria could live in high levels of CO2, like in the atmosphere of Venus ?
0
votes
1answer
27 views

Are clones less likely to be fertile?

I know that hybrid animals like mules are infertile. What about clones? Do cloned animals show the same fertility as their original?
0
votes
0answers
14 views

an umbrella term for homeolog and ohnolog?

Is there a word that refer to homologous chromosomes within a polyploid species? If I have AABB species, what is A to B? The words "homeolog" and "ohnolog" are reserved for the cases if the ...
0
votes
0answers
13 views

glycogenesis, glycogenolysis and weight gain or loss

I am under the impression (from dietary websites) that when excess serum glucose is stored as glycogen, body weight is increased and the reverse: when glycogen is converted to serum glucose, body ...
0
votes
0answers
12 views

How long can bacteria stay in exponential phase while in continues culture?

When grown in a continuous culture device (chemostat), bacteria can stay in exponential phase for long periods of time. How long can the bacteria stay in exponential phase under optimal conditions? ...
0
votes
0answers
23 views

Can animals be taught human language?

I saw a child once who had a speach difficulty. She was born like that. She could understand what was said to her but she couldn't speak properly. She sounded like just some animal making sounds (...
-3
votes
0answers
8 views

Which topics to cover for Edexcel Biology B Unit 1 Exam?

I'm studying for AS Edexcel Biology exam from Ann Fullick's Biology B 1 (2015). Can someone please tell me which topics I need to cover from this book for Unit 1 Exam? Thanks!
-4
votes
0answers
18 views

Bio calculation [on hold]

You are given a 3 M stock solution of KCl and you are asked to create 15 mls of a 1.7M working solution. What do you do? . Add 1.7 ml of stock to 15 ml of water. b. Add 1.7 ml of stock to 13.3 ml ...
0
votes
1answer
9 views

Insertion Confirmation Cloning Strategy

So I am in a bit of a time constraint. Essentially, I inserted a DNA fragment via molecular cloning which contains a unique RE site. I need to confirm whether my colony has or does not have the ...
0
votes
1answer
15 views

Can I make an population genetic analysis from incomplete protein?

I have an dataset of fasta sequences. This proteins are not complete (My sequences have 700 nucleotides,while complete sequences have 1725 nucleotides)I would like to know if i can make an population ...
-2
votes
0answers
25 views

After giving birth I was given 2 pints of blood because my level had gone down to a 6. Is this dangerous [on hold]

Please answer Ok so level is at 6 is It dangerous if no transfusion
0
votes
0answers
20 views

What kind of insect is this found in southern Michigan?

Unfortunately, I do not have a photo of the insect I am asking for help identifying; it appeared for a short amount of time and we were rather inclined to get rid of it before it bit us. This bug was ...
14
votes
4answers
2k views

Are mutations a source of genetic variation?

Here is a question from the book SAT II Success Biology E/M (where the SAT is the exam taken by the American high school students): Which of the following statements is true about mutations? (A) ...
0
votes
0answers
8 views

Location of lipid absorption

I've looked-up in many textbooks about the location of fat absorption in the GIT and I've never found out the information. We know that the biliary salts form micelles in the proximal part and that ...
2
votes
0answers
20 views

Net electrical load of a peptide

I have to determine the electrical charge of the next peptide chain: C - E - H - P I know that this page is not there to raise doubts about this style, but I have looked for resources on the ...
0
votes
0answers
13 views

what is the sites of bursa in the body?

Does bursa have to be near to a join or lie in a joint's cavity? if the answer were it doesn't ... so how it is created And about the subcutaneous bursa like that between heel bone and skin .. Does ...
0
votes
0answers
11 views

About Sensory Substitution for the same sensory system but different stimuli?

Following my question before : How exactly does sensory substitution work ? , I read several other papers about sensory substitution, how information is processed with a sensory-system that isn't ...
0
votes
0answers
26 views

Why doesn't evolutionary pressure turn common household bugs white? [duplicate]

If household bugs (ants, houseflies, spiders, etc) were white in color instead of black, they would be much harder to spot and hence squish, since they would blend into the white walls of most houses ...
-1
votes
0answers
11 views

What are the similarities between muscle tissue and nerve tissue?

Please can you help me find the similarities between nerve tissue and muscle tissue?
1
vote
0answers
7 views

What does the hornet do on the ivy blossoms?

We've got blooming ivy growing around a tree. Since several weeks lots of hornets have been whirring in the foliage and I wonder whether they want to feed on insects that are lured by the blossoms or ...
2
votes
0answers
35 views

What function will survive evolution?

I wrote the following phrase in my scientific text: X is ubiquitous in life of Y. On some occasions X might be detrimental, resulting, for example, in so so phenomena. But is it plausible that a ...
0
votes
0answers
13 views

Why does the exercise level impact the nail growth rate?

I read on https://en.wikipedia.org/w/index.php?title=Nail_(anatomy)&oldid=863800434#Growth: Actual growth rate is dependent upon age, sex, season, exercise level, diet, and hereditary factors. ...
0
votes
0answers
13 views

What conclusions can I draw about the size, charge, and shape of messenger molecules?

Molecules such as cAMP or Inositol trisphosphate are used in organisms as messenger molecules that make things happen when they are supposed to happen. These molecules are usually big, but not too big,...
2
votes
0answers
19 views

UK insect identification

15-20mm long. Brown legs, head, casing/wings (no flight witnessed). Black body with protruding back part. Long antennae. Very fast running speed. Seemingly keenly aware of surroundings. Is this some ...
1
vote
1answer
17 views

White residue from ginger juice

I’ve been juicing some ginger by grating it and pressing it (by hand). A white residue collects at the bottom of the liquid. What is this?
-1
votes
0answers
19 views

Why is the degree of freedom not 5?

So we got out homework back and along with it the answers to the questions. I understood that the degree of freedom Can be obtained with N-1. So we have 6 sets of data then N =6. So df =5. But here it ...
0
votes
1answer
28 views

Why does this genetic pedigree show an autosomal dominant allele at one generation but not another?

Questions 186-188 of the GRE Biology Practice Test are prefaced with this genetic pedigree: Questions 186-188 refer to the following pedigree for the inheritance of a very rare human disease over ...
4
votes
1answer
26 views

Is this long black insect with semi-long antennae and a large segmented abdomen caught in the kitchen a larva or an imago? And what is it?

This is in Northrhine Westfalia in Germany/Europe: we have those large longish and comparatively flat bugs (taking my hand below the plastic as reference, it should be about 4cm or 1 5/8in in length) ...
0
votes
0answers
13 views

What would the family tree look like

If a son has a baby with his mother, how would the child's family tree be arranged? would the child show that he is the mother's grandchild or son? Sound twisted I know, but I must ask...
0
votes
0answers
17 views

What do halophiles eat?

We all know that halophiles can survive salt environments and all that, but what do they really eat? Do they consume the salt in their habitat?
2
votes
1answer
22 views

Fluorescent protein tags and colocalisation

We want study if 2 proteins A and B are co-located, for that we use 2 FTP(Fluorescent tag proteins) for each protein?and after the expirement these 2 FTP are co-located. Does that mean necessarily ...
1
vote
0answers
8 views

Hypanthial disc

Can anyone illustrate what the hypanthial disc is? It is descriped throughout the key to Rosa in the Flora of North America. I think that I understand that the hypanthium is the hip which is formed ...
-1
votes
0answers
26 views

Difference between Amylopectin and Amylose

I was reading about the structure of starch and found out that it's made up of amylose and amylopectin. In amylose, all the glucose molecules are joined by ⍺-1,4 glycosidic bonds. The structure of ...
1
vote
1answer
10 views

Pox virus infection process

How does Pox virus duplicate it's genome? Does it bring DNA polymerase or RNA polymerase into the host cell?
1
vote
0answers
7 views

natural characteristics of insects used as human disease model

In this paper [1], the author found that the autism-related genes are conserved between honey bee and human. Thus, this paper providing a means to further explore sociobiology theory. In my opinion, ...
2
votes
0answers
17 views

Cichlid fish in Africa

Are the cichlid fish in Africa an example of divergent or convergent evolution? On the one hand they have evolved similar features to each other indicating convergent evolution, but on the other, they ...
0
votes
0answers
33 views

Is it possible to do the process of photosynthesis artificially to breakdown CO2 in C and O2?

We are working on a project and we instantly want to know that is it possible to break down CO2 artificially to C and O2 anyway but we have chosen the way of photosynthesis so is it possible ...
-2
votes
0answers
24 views

Color eyes in photo [on hold]

I donk known what is my color eyes Is brown light, hazel, i dont known What is my color eyes ?
8
votes
3answers
411 views

Why did scientists think humans had 100,000 genes (before the Human Genome Project)?

One of the major results of the Human Genome Project (HGP) was that humans have far fewer separate genes than previously thought. From a 2004 article about the HGP: Francis S. Collins, director of ...
3
votes
0answers
24 views

Light/Heavy Isotopes in Living Organisms

I was wondering, why are lighter isotopes (e.g. carbon-12 as opposed to carbon-13) preferentially used by life on Earth? Is their increased stability the only factor? Thanks in advance!
0
votes
0answers
10 views

Is Nitella sp. (macroalgae) edible?

If a Nitella sp. macroalgae (see picture) comes from a clean freshwater spring. Is it edible for humans? (https://i.stack.imgur.com/6I7pX.jpg)
0
votes
0answers
28 views

What animal is this

I saw this in the backyard, it looks like a worm
0
votes
0answers
14 views

What amount of alllels on average do we share with our siblings?

Overlooking details ,My mother produces 4 haploidal cells ,same my father . Every cell has 23 chromosoms of 46 ,so if we leave recombinations, etc...,and suppose that thera only 2 cell from my mother ...
1
vote
0answers
37 views

Solubility of lithium carbonate in blood

When a person with Bipolar Disorder ingests a pill of $\ce{Li_2CO_3}$ and it enters the stomach the pill cap is dissolved in the hydrochloric acid; however, when it gets absorbed in the blood how does ...
0
votes
0answers
17 views

Gene Regulation: Corepressors and Inducers

I know that co-repressors enhances a repressors ability to attach the operator. Also, I know that inducers can be attached to activator proteins to stimulate transcription and they can put on ...
0
votes
0answers
11 views

Why didn't the ions move through channel or transport proteins?

I recently made an experiment at school to test the semi permeability of the cell membrane of yeast cells. I did as following: 1.Sodium bicarbonate solution was put into a conical flask 2. Drops of ...
0
votes
0answers
5 views

Is there a good resource for detailed molecular/atomic information about plant cells?

Can anyone point me to a good source for understanding the molecular/atomic details for the structure of a plant cell? I’m thinking of the classic kind of plant cell diagram: https://goo.gl/images/...

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