Cell Biology

exon shuffling

exon shuffling

what is         exon shuffling       and        what are the mechanisms of exon shuffling?    

fareh   661   2 Replies

fareh

what do the cells walls of plantand extracellularmatrix of cells have

what do the cells walls of plantand extracellularmatrix of cells have

   

    what do cell walls of plant and the extracellular matrix of animals have in common

kathynurse   786   1 Reply

barathvaj

How does Abilify effect dopamine and seratonin production in the body?

How does Abilify effect dopamine and seratonin production in the body?

    
How does Abilify effect dopamine and seratonin production in the body?

jacobthomas   2032   1 Reply

bio_man

2. In 1884, Hans Christian Gram described a method of staining bacterial cells

2. In 1884, Hans Christian Gram described a method of staining bacterial cells

2.  In 1884, Hans Christian Gram described a method of staining bacterial cells while not staining surrounding animal tissues; however, he thought the staining method he developed was faulty because not all bacteria stained. In a letter to

sagrawal1984   1451   2 Replies

padre

A peptide bond could be formed between the two atoms indicated by red arrows in the picture above.

A peptide bond could be formed between the two atoms indicated by red arrows in the picture above.

 A peptide bond could be formed between the two atoms indicated by red arrows in the picture above.
True or False?
[img width=350 height=170]https://biology-forum

markenkenmakenk   1791   10 Replies

Jayrob Charlz A. Itable

A(n) _____ is a spur-of-the-moment question. Fill in the blank(s) with correct word

A(n) _____ is a spur-of-the-moment question. Fill in the blank(s) with correct word

Van Helmont did an experiment in which he weighed a small tree, the soil in the pot in which the tree was planted and the water given to the tree over a five year period
He found that the tree changed it photosynthesis significantly over the fiv

Abdularhman   307   1 Reply

cooldawg69

A(n) _____ is a spur-of-the-moment question. Fill in the blank(s) with correct word

A(n) _____ is a spur-of-the-moment question. Fill in the blank(s) with correct word

Photosystems
Some chlorophyll and accessory pigments are grouped into two types of light gathering complexes called ____________________ ___________ (PSII) and ______________ ____________ (PSI)
These light gathering complexes are embedded i

Abdularhman   235   1 Reply

bio_man

ABO/RH blood typing system

ABO/RH blood typing system

Describe ABO/RH blood typing system. How do you carry out blood typing of an unknown blood sample?

Chris   3701   1 Reply

bio_man

Aerobic cellular respiration in a skeletal muscle homework help, thank you

Aerobic cellular respiration in a skeletal muscle homework help, thank you

Write a unified response addressing the following aspects of mitochondrial myopathy.
A) Most aerobic cellular respiration takes place in the mitochondria of the muscle.
1) Explain, in general terms, aerobic cellular respiration as it takes

RayBio   5919   1 Reply

nite_n_day

cell transport and permebility

cell transport and permebility

explain the relationship between pore size and filtration rate.  please thank you 

oswhitaker   1428   4 Replies

shruti

Describe the disease caused by herpes simplex virus 1 (HSV-1) as well as how it

Describe the disease caused by herpes simplex virus 1 (HSV-1) as well as how it

 Describe the disease caused by herpes simplex virus 1 (HSV-1) as well as how it is spread.

colleen   1029   1 Reply

star

Describe the roles of checkpoints, cyclin, Cdk, and MPF in the cell cycle control system. ?

Describe the roles of checkpoints, cyclin, Cdk, and MPF in the cell cycle control system. ?

Describe the roles of checkpoints, cyclin, Cdk, and MPF in the cell cycle control system.

askjeeves   737   1 Reply

tonio

DNA segment consist of (3000bp) & C is (30%) find the number of : G , C, T , A

DNA segment consist of (3000bp) & C is (30%) find the number of : G , C, T , A

 DNA segment consist of (3000bp) & C is (30%)
find the number of : G , C, T , A

mohaymin93   931   1 Reply

javaidb

During meiosis, the chromosome number is halved

During meiosis, the chromosome number is halved

 During meiosis, the chromosome number is halved
A) during the first meiotic division.
B) during the second meiotic division.
C) prior to the first meiotic division.
D) prior to the first mitotic division.

colleen   507   2 Replies

colleen

Explain how changes in ion movements can result in an action potential.

Explain how changes in ion movements can result in an action potential.

 Explain how changes in ion movements can result in an action potential.

nite_n_day   409   3 Replies

padre

Explain how the endocannabinoids modulate neuronal activity.

Explain how the endocannabinoids modulate neuronal activity.

 Explain how the endocannabinoids modulate neuronal activity.

nite_n_day   500   3 Replies

padre

Explain the problems now faced in treating Candida infections in humans.

Explain the problems now faced in treating Candida infections in humans.

 Explain the problems now faced in treating Candida infections in humans.

colleen   956   1 Reply

sci_expert

Explain the process of quorum sensing as it relates to regulation of bacterial

Explain the process of quorum sensing as it relates to regulation of bacterial

 Explain the process of quorum sensing as it relates to regulation of bacterial bioluminescence in Vibrio fischeri.

colleen   1061   1 Reply

bio_man

Explain why readings are called Optical Density (O.D), or Absorbance

Explain why readings are called Optical Density (O.D), or Absorbance

I need help with this questions

 explain why readings are called Optical Density (O.D), or Absorbance?

nevada   218   1 Reply

bio_man

Explain why the amount of energy released in a redox reaction depends on the na

Explain why the amount of energy released in a redox reaction depends on the na

 Explain why the amount of energy released in a redox reaction depends on the nature of both the electron donor and the electron acceptor.

colleen   2560   1 Reply

chemb

Hormone insulin in beta cells of the pancreas

Hormone insulin in beta cells of the pancreas

The sequence of events that produces the hormone insulin in beta cells of the pancreas is ________

     1.  tRNA transports amino acids to the ribosome
     2.  information from DNA is used to form mRNA

Farheen98   546   2 Replies

ccharlotte11

How are algae, fungi and lichens related and how is this relationship defined

How are algae, fungi and lichens related and how is this relationship defined

 How are algae, fungi and lichens related and how is this relationship defined

sagrawal1984   641   1 Reply

f_zah1

How do pathogens gain access to host tissue

How do pathogens gain access to host tissue

 How do pathogens gain access to host tissue

colleen   1028   2 Replies

Gelsa Cinanni

How innate, antibody-mediated, and cell-mediated immunity can function together to eliminate an antigen?

How innate, antibody-mediated, and cell-mediated immunity can function together to eliminate an antigen?

How innate, antibody-mediated, and cell-mediated immunity can function together to eliminate an antigen

rixa85   851   1 Reply

michelleshell

How long will it takes to a CAM plant to synthesize a single sucrose molecule?

How long will it takes to a CAM plant to synthesize a single sucrose molecule?

Plant Physiology

borang   1920   3 Replies

wizarddim

If a peptide bond was formed between amino acids number 2 and 3, water would be formed from the ...

If a peptide bond was formed between amino acids number 2 and 3, water would be formed from the ...

 If a peptide bond was formed between amino acids number 2 and 3, water would be formed
from the atoms circled in red in the picture above.
True or False?
[

markenkenmakenk   352   2 Replies

Shelina Mohamed Rawji

Imagine that a seven-year-old girl develops a hormone-secreting ovarian tumor d

Imagine that a seven-year-old girl develops a hormone-secreting ovarian tumor d

 Imagine that a seven-year-old girl develops a hormone-secreting ovarian tumor derived from granulosa cells. What signs of the disease would you expect? 

nite_n_day   3044   2 Replies

nite_n_day

Interactions among chromosomes

Interactions among chromosomes

This diagram shows a diploid nucleus (2n=8) in which chromosome replication has occurred in preparation for mitosis (top) and meiosis (bottom). The nucleus at top right is now in prophase of mitosis; the nucleus at bottom right is now in prophase I o

caroltear   2116   1 Reply

duddy

Is some of the energy of food lost during digestion by enzymes due to the breakdown of bonds?

Is some of the energy of food lost during digestion by enzymes due to the breakdown of bonds?

knowing that chemical energy of food is converted to heat energy to be used by the body in many anabolic reactions- it is the breaking down of bonds that releases energy.
Does that mean that some of the energy of food is lost during digestion as

mai2000   158   1 Reply

bio_man

It is not always easy to locate or identify genes based on cDNA. How is this pr

It is not always easy to locate or identify genes based on cDNA. How is this pr

 It is not always easy to locate or identify genes based on cDNA. How is this problem created by the differences between cDNA and DNA with respect to a given gene?

barry   1213   1 Reply

duddy

Meiosis requires two rounds of cell division.

Meiosis requires two rounds of cell division.

: Give a reason for the following: Meiosis requires two rounds of cell division.
A The first division increases the number of
cells, while the second halves the
chromosome number.
B The first division increases the number of

HOSSAM1414   103   1 Reply

bio_man

Molecular Absorption Spectroscopy

Molecular Absorption Spectroscopy

 Molecular Absorption Spectroscopy
Compound X has a molar absorptivity of 1030 L mol-1 cm-1 at 290 nm and a molar absorptivity of 800 L mol-1 cm-1 at 372 nm. Compound Y has a molar absorptivity of 850 L mol-1 cm-1 at 290 nm and a molar absorptiv

Red.orange.   74   1 Reply

bio_man

Part C - Predicting genotypes and phenotypic frequencies of progeny

Part C - Predicting genotypes and phenotypic frequencies of progeny

How do I solve this?

12

RayLopezable   3526   18 Replies

Sofy

phylogenetic trees and geographic relationships

phylogenetic trees and geographic relationships

What is the best way of learning how to solve the phylogenetic trees and geographic relationships?

jobnike   1280   1 Reply

bio_man

regulation of cyclin dependent kinas

regulation of cyclin dependent kinas

Explain regulation of cyclin dependent kinase in normal and cancer cells.
How do they differ
importance of this kinase in both cells

xax22   819   1 Reply

savio

Relative permeability ...

Relative permeability ...

Discuss the relative permeability of the membrane to Na+ and K+ in a resting neuron

Mrs.T03   948   1 Reply

robertling

Sketch a phylogenetic tree showing the domains and major branches.

Sketch a phylogenetic tree showing the domains and major branches.

 Sketch a phylogenetic tree showing the domains and major branches.

colleen   818   1 Reply

duddy

Staphylococcus aureus and kb sequence

Staphylococcus aureus and kb sequence

22. Staphylococcus aureus were isolated from skin pustules of a patient, i.e. small bumps on the skin containing pus, before and after antibiotic treatment. Concerningly, not all pustules were cured after the first line of antibiotic treatment. DNA a

Red.orange.   79   1 Reply

CaptainTrout

The Hershey-Chase experiment answered the question of whether protein or DNA wa

The Hershey-Chase experiment answered the question of whether protein or DNA wa

options:
 DNA or protein migrated at the same or different rates when centrifuged
   enzymes that destroyed DNA or destroyed protein prevented transformation of bacteria
   DNA or protein from a virus entered bacterial cells during infecti

regalbaby   1663   1 Reply

savio

The intracellular cAMP level is lower after time t than before.

The intracellular cAMP level is lower after time t than before.

 The intracellular cAMP level is lower after time t than before.
Select all that apply.
Select all that apply.
   It is true of the cells transferred to medium L.
   It is true of the cells transferred to medium G.
   It is true of

Tariq_alam99   2644   N/A

Tariq_alam99