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]
2 years ago
5

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

Biology
1 answer:
NemiM [27]2 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
a dive instructor begins his lesson on the shore. As he guides his students out into the water,what zone are they in?
Aleks04 [339]

PLATO USERS

Intertidal Zone 10 m (33 ft)

Sublittoral Zone 200 m (660 ft)

Hadal Zone 10,911 m (35,797 ft)

Bathyal Zone 6,000 m (19,686 ft)

[ a ] the sublittoral zone or the shallowest bathyal zone

[ b ] the intertidal zone or the deepest hadal zone

[ c ] the oceanic zone or the deepest intertidal zone

[ d ] <em><u>"The Intertidal Zone Or The Shallowest Sublittoral Zone."</u></em>

6 0
3 years ago
What is silica used for?
tankabanditka [31]
Vast away of industries, like the other person said they said more
3 0
2 years ago
PLEASE HELP WILL GIVE BRAINLIEST IF CORRECT
Sav [38]

Answer:

I think 1 = having waxy leaves and 4 = having roots that grow above ground

Explanation:

Not Sure how to explain.

7 0
3 years ago
Overexposure of animals to X-rays is dangerous because X-rays are know to damage DNA. A direct result of this damage is cells wi
pickupchik [31]

Answer:

radiation

Explanation:

7 0
3 years ago
What is the maximum number of electrons that can be placed in the first shell/energy level?
zysi [14]

QUESTION:-

What is the maximum number of electrons that can be placed in the first shell/energy level?

A. 1

B. 8

C. 2

D. 18

Answer:

C. 2

The first shell, closest to the nucleus and with the lowest-energy electrons, is shell 1. This first shell has only one subshell (labeled 1s) and can hold a maximum of 2 electrons

3 0
2 years ago
Read 2 more answers
Other questions:
  • Which genetically engineered medicine is used to treat patients who have growth defects? insulin flu shot human growth hormone p
    6·2 answers
  • How are alllels passed for a guinea fur color and length
    14·1 answer
  • WILL MARK BRAINLIEST!
    6·1 answer
  • I have vocabulary and i need some help can anyone tell me a sentence for biotic
    8·1 answer
  • Identify the number of the organelle in the diagram that is called powerhouse of cell
    13·1 answer
  • PLEASE ANSWER ILL GIVE YOU BRAINLIEST
    13·1 answer
  • Someone please help asap!!
    7·1 answer
  • Identify the error in apostrophe use in the sentence. Some of Dickens' books are in the childrens' section, and some are in the
    6·1 answer
  • Hi pls help i’ll give brainliest
    10·1 answer
  • Which has more of an effect on Earth’s tides, the Moon or the Sun. Explain your answer.
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!