1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
RoseWind [281]
3 years ago
5

What second messenger most directly causes calcium ions to be released from intracellular stores?

Biology
1 answer:
NemiM [27]3 years ago
6 0

Answer: adenylyl cyclase inositol triphosphate mainly known as IP3 causes the release of Calcium ions directly from the inracellular stores and causea contraction.

Explanation:

IP3, inositol phosphate is a second messenger a signaling molecule. It is made by hydrolysis of phosphatidylinositol 4,5-bisphosphate (PIP2), a phospholipid that is located in the plasma membrane, by an enzyme phospholipase C.

IP3 binds to the calcium channels and opens Ca2+ channels that are embedded in the ER membrane, releasing Ca2+ into the cytosol. Calcium ions released may cause contraction and regulate the Ca2+ channels in the membranes.

You might be interested in
The cells of plants and animals are similar, except for a few different structures. Which structures are only found in
ASHA 777 [7]
I just need this for I can post my question sorry
4 0
3 years ago
Read 2 more answers
Examine the photographs of 16 species of anole lizards and sort them into as many groups as you want according to how they appea
n200080 [17]

Answer:

On the basis of physical appearance.

Explanation:

We grouped the lizards into various groups on the basis of similarities and differences in the body structure, appearance and colour etc. The legs of anole lizards are small legs with pads on their feet for gripping surfaces which give them the advantage to climb up the trees while on the other hand, these small legs can't help in the survival on the land because they can't run too fast from their predators with these short legs so these legs has benefit in climbing the tree but disadvantage in running on the land.

8 0
2 years ago
Diploid (2n) number of 38, how many chromosomes would be present in an epithelial cell
sergiy2304 [10]
The epithelial cell will have 38 chromosomes
A 2n or 2(19) = 38 chromosomes. This is because n is called haploid number of chromosomes; the number of chromosomes present in the gametes. Epithelial cells like other body cells divides through the process of mitosis; therefore; the parent cells yields daughter cells with the same number of chromosomes (diploid). The other haploid (n) number is present in the gametes which divides by the process of meiosis. 
4 0
3 years ago
How does a scientific hypothesis differ from a scientific theory?
Leviafan [203]
An hypothesis is an educated guess whereas a theory has supporting evidence to help prove the point to be correct. (I THINK this is right)
7 0
3 years ago
What is the correct equation for average velocity
Montano1993 [528]

The average speed of an object is defined as the distance traveled divided by the time elapsed. Velocity is a vector quantity, and average velocity can be defined as the displacement divided by the time.

6 0
3 years ago
Read 2 more answers
Other questions:
  • Leaves attach to stems at nodes; the spaces between the nodes are internodes<br> true or false
    7·2 answers
  • Glucose provides energy for cells. Different cells have different mechanisms for glucose intake. Intestinal cells contain protei
    13·2 answers
  • Genetically-different __________ are the kind of cells made from meiosis.
    5·1 answer
  • Is mineral salt a nitrogenous waste? ​
    8·1 answer
  • What are some examples of microorganisms
    6·1 answer
  • Is cellular compartmentalization an advantage or a disadvantage?
    15·1 answer
  • The primary reasons agricultural productivity increased during the Green Revolution was been a combination of fertilizers, crop
    14·1 answer
  • Cacti grow slowly due to the fact that they keep their stomata closed for much of the day. Why would closing their stomata durin
    9·2 answers
  • Please help anyone ?????!!!
    8·1 answer
  • Phương pháp cố định mẫu
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!