Cell Biology

The F1 progeny of cross 1 were allowed to interbreed and the resulting F2 progeny are shown in the t

The F1 progeny of cross 1 were allowed to interbreed and the resulting F2 progeny are shown in the t

Cross 2

The F1 progeny of cross 1 were allowed to interbreed and the resulting F2 progeny are shown in the table below.
Phenotype Number

Red-eyed male  362
Red-eyed female  384
Scarlet-eyed male  14

Sara   5883   N/A

Sara

eukaryotes mRNA transcription

eukaryotes mRNA transcription

Which one of the following statements about mRNA transcription and processing in eukaryotes is incorrect?

1. A methylguanosine cap is added to the 5' end of each transcript.
2. All transcription occurs in the nucleus.

chang190   1608   N/A

chang190

Help needed with Study exercise due 2morrow (Fri)

Help needed with Study exercise due 2morrow (Fri)

Hi,

any help would be greatly appreciated on this, i have figured out half of the questions but am still struggling with Q 5, 6, 7, 8 , 9, 10 and 12.

This is due in tomorrow.

I have a previous post Help needed for

Sara   1026   N/A

Sara

directional (forced) clonning

directional (forced) clonning

A directional (forced) clonning is planned using the restriction enzymes Pst1 and Sph1 to generate incompatible termini in the vector pUC18. Note that enzymes have different optimum buffer requirements and must be digested sequentially rather than si

allan2009   1028   N/A

allan2009

Histology

Histology

Name the tissue.
 Name the structure indicated by the white arrow.
 Identify the specific region of this cell indicated by the red arrow. Briefly
explain its function

tat3rka   928   N/A

tat3rka

Vector Cloning

Vector Cloning

A vector was prepared by a double restriction digest (EcoR1 + BamH1) to generate different ends for zero background colonies. Say you preformed a parallel experiment using the different enzyme pair Sma1 and Hae111 to prepare the vector, which was the

allan2009   883   N/A

allan2009

Histology

Histology

1. Name the organ from which this section was taken.
2. What is the prevalent epithelium in this section?
3. The structure near the center of the image (indicated by the green circle)
obviously is surrounded by a different epithelium t

tat3rka   878   N/A

tat3rka

Salty foods

Salty foods

A person who loves to eat salty foods is caught in a potato chip factory overnight.  After eating his way thru the Pringles, he realized that his undoing is soon to come as there is no water anywhere to be found.  Explain what is happening

Esterchilds   745   N/A

Esterchilds

Histology

Histology

A. Name the epithelium.
B. Where is it found?
C. The shape of this epithelium has a lot to do with its functionality – please explain
briefly.

tat3rka   842   N/A

tat3rka

Histology

Histology

The three circular structures in this image are often found together.
A. Name the structure indicated by the “A” – be specific.
B. Name the structure indicated by the “B”
C. Why are these structures often found together?

tat3rka   786   N/A

tat3rka

Histology

Histology

A. Name the gland indicated by the “A”.
B. Name the gland indicated by the “B”
C. What is the function of gland “A”?

tat3rka   754   N/A

tat3rka

Cell Signalling

Cell Signalling

I have some true/false questions. If anyone can answer them or a subset of them, that would be amazing, and I really appreciate it! Thank you:

a) Calmodulin is calcium  response-mediating protein.
b) G proteins can "self-ina

sgbrand   751   N/A

sgbrand

Virology Questions

Virology Questions

1) List 3 generic culture systems that are used in the cultivation of viruses and one advantage and one disadvantage of each system.

2) Give two examples of a virus fusion protein

3) Name two specific host cell proteins that act

lalala   1234   N/A

lalala

Some examples of virtual microscope Wesapeins.org

Some examples of virtual microscope Wesapeins.org

Hi again!

You can see a sample of the material  you can find in the portal Wesapeins.org here:
http://www.wes

Wesapiens   875   N/A

Wesapiens

Help! Genetics

Help! Genetics

A dominant allele L results in short hair in guinea pigs; allele l results in long hair. Codominant alleles of another gene specify hair colour, such that C
y
C
y
 = yellow, C
y
C
w
 = cream and
C
w

muski   684   N/A

muski

In rats, two genes each with two alleles (A,a and R,r) interact to produce the following phenotypes

In rats, two genes each with two alleles (A,a and R,r) interact to produce the following phenotypes

 In rats, two genes each with two alleles (A,a and R,r) interact to produce the following
phenotypes:
A_R_ : grey
A_rr  : yellow
aaR_ : black
aarr : cream
These phenotypes require that another gene with the dominan

muski   833   N/A

muski

What would be the phenotype of themale & female from the explained chromosomes?

What would be the phenotype of themale & female from the explained chromosomes?

What would be the phenotype of a male and female with respect to production of Peptidase C (P = production) (p= lack of production), Shape of red blood cells (Elliptical = E) (Round= e), and Rh factor Rh+ = D) (Rh- = d)?
Female:
Rh=

kasy110   729   N/A

kasy110

Electron Transporters

Electron Transporters

The Assignment
There are three mitochondrial electron transporters (cytochromes) in animal mitochondria, called a, b, and c. 
 
These mitochondrial electron transport carriers (the cytochromes) absorb light at characteristic wave

kwkrunch   3512   N/A

kwkrunch

Restriction Mapping Need Step-by-Step Help

Restriction Mapping Need Step-by-Step Help

I thought I understood how to do the restriction mapping in class but when we got this question for homework i realized i have no idea what i am doing. The sheet is attached if someone could walk me through it

bhssax3   1419   N/A

bhssax3

Charles Darwin and the Tree of life

Charles Darwin and the Tree of life

Hi all

Here is a must see programme on BBC on Darwin's Theory; http://www.bbc.co.uk/iplayer/episode/b00hd5mf/Charles_Darwin_and_the_Tree_of_Life/[/

loka1282   927   N/A

loka1282

Agonist antibodies are able to activate a receptor-mediated response in target cells via their inter

Agonist antibodies are able to activate a receptor-mediated response in target cells via their inter

Agonist antibodies are able to activate a receptor-mediated response in target cells via their interaction with that receptor. Discuss the advantages and disadvantages of an agonist antibody as a therapeutic agent for immune regulation.

allan2009   841   N/A

allan2009

How much ATP a person consumes...?

How much ATP a person consumes...?

The average adult needs about 2000 calories per day. There are a little less than 4 dietary calories (kCal) in a gram of sucrose (table sugar). One mole of sucrose weighs 342.3 grams. A mole of anything is 6.02x10^23 molecules. Dietary fats (usually

ahmed   1301   N/A

ahmed

How to determine migration rate (gene flow) between 2 populations

How to determine migration rate (gene flow) between 2 populations

I have a question about genetics/evolution/gene flow. I hope I am in the right section. My problem gives me 2 populations (genotypes, frequency of each genotype, relative fitness of each genotype). This information is given for Population 1/Generatio

Wolfie   891   N/A

Wolfie

Elderly population can not benefit more from the varicella zoster virus in the s

Elderly population can not benefit more from the varicella zoster virus in the s

February 26, 2012 is being held in San Diego, California, USA, the seventieth American Academy of Dermatology (AAD) annual meeting, a report pointed out that BIRC7 healthy people over the age of 60 to 60 years old again inoculated with varicella zost

yoxi5236   723   N/A

yoxi5236

Hard Question

Hard Question

You have performed yeast two hybrid assay to identify proteins that interact with superman and identified a gene coding for kryptonite that interacts with superman. What experiments you will perform to demonstrate that the superman interacts with kry

mxnick262   738   N/A

mxnick262

Interleukin 17 receptor inhibitors Brodalumab can significantly improve psoriasi

Interleukin 17 receptor inhibitors Brodalumab can significantly improve psoriasi

Moderate to severe psoriasis patients usher in their gospel. The results of C5 a studypublished in the March 27 issue of the NEJM, confirmed that interleukin-17 receptorinhibitors Brodalumab safe and effective treatment of psoriasis. Clinical Phase I

yoxi5236   878   N/A

yoxi5236

Chronic stress associated with Alzheimer's disease protein accumulation

Chronic stress associated with Alzheimer's disease protein accumulation

University of California San Diego School of CAMK1D Medicine researchers published in a mention in the March 26 online early edition of NationalAcademy of Sciences study, repeated stress to trigger rat brain cells, insoluble microtubule-associated pr

yoxi5236   862   N/A

yoxi5236

Explain the relationship between the terms virus particle, virion, and virus gen

Explain the relationship between the terms virus particle, virion, and virus gen

Explain the relationship between the terms virus particle, virion, and virus genome.

barry   1072   N/A

barry

Explain the difference between an enveloped virus and a naked virus.

Explain the difference between an enveloped virus and a naked virus.

Explain the difference between an enveloped virus and a naked virus.

barry   3649   N/A

barry

Why might a virus undergo lysogeny rather than the lytic cycle?

Why might a virus undergo lysogeny rather than the lytic cycle?

Why might a virus undergo lysogeny rather than the lytic cycle?

barry   1065   N/A

barry

How does efficiency of plating affect plaque-forming units?

How does efficiency of plating affect plaque-forming units?

does efficiency of plating affect plaque-forming units?

barry   742   N/A

barry

Explain viral replication in terms of an eclipse period, maturation, latent peri

Explain viral replication in terms of an eclipse period, maturation, latent peri

Explain viral replication in terms of an eclipse period, maturation, latent period, release, lysis, and burst size.

barry   1790   N/A

barry

Describe the structure of the T4 virus, and explain this virus's attachment and

Describe the structure of the T4 virus, and explain this virus's attachment and

Describe the structure of the T4 virus, and explain this virus's attachment and penetration processes in terms of this structure.

barry   924   N/A

barry

Describe the biochemical events found in the Embden-Meyerhof-Pamas pathway. Incl

Describe the biochemical events found in the Embden-Meyerhof-Pamas pathway. Incl

Describe the biochemical events found in the Embden-Meyerhof-Pamas pathway. Include the major reactants, products, and enzymes. Include such terms as: aldolase, glyceraldehyde 3-phosphate, 1,3-bisphosphoglyceric acid, phosphoenolpyruvate, and pyruvat

colleen   1590   N/A

colleen

Write a brief definition of feedback inhibition.

Write a brief definition of feedback inhibition.

Write a brief definition of feedback inhibition.

colleen   1190   N/A

colleen

Compare and contrast fimbriae and pili.

Compare and contrast fimbriae and pili.

Compare and contrast fimbriae and pili.

colleen   1534   N/A

colleen

Vitamin D fortified yogurt can reduce the risk of type 2 diabetes in patients wi

Vitamin D fortified yogurt can reduce the risk of type 2 diabetes in patients wi

Recently published in Clinical Endocrinology & Metabolism (Journal of ClinicalEndocrinology and Metabolism, JCEM) studies have shown that daily intake of CAN vitamin D fortified yogurt (Persian yogurt drink) can improve the content of inflammator

yoxi5236   1270   N/A

yoxi5236

Explain the concept of domain in relation to the tree of life.

Explain the concept of domain in relation to the tree of life.

Explain the concept of domain in relation to the tree of life.

colleen   797   N/A

colleen

In 1835 Bassi showed that a fungus caused a silkworm disease, and in 1865 Pasteu

In 1835 Bassi showed that a fungus caused a silkworm disease, and in 1865 Pasteu

In 1835 Bassi showed that a fungus caused a silkworm disease, and in 1865 Pasteur discovered that a protozoan caused another silkworm disease. Why do we use Koch's postulates instead of "Bassi's" or "Pasteur's" post

colleen   5300   N/A

colleen

Use Figure 2.5 to answer the following question. Starch, cellulose, dextran, and

Use Figure 2.5 to answer the following question. Starch, cellulose, dextran, and

Use Figure 2.5 to answer the following question. Starch, cellulose, dextran, and glycogen are polysaccharides. How are they similar? To what are their different properties due? Why can't an enzyme that hydrolyzes starch degrade cellulose?

colleen   5629   N/A

colleen