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
ryzh [129]
3 years ago
12

What happens when calcium binds troponin? What happens when calcium binds troponin? Troponin binds to actin and causes sarcomere

shortening. Troponin changes shape and covers the SR calcium channel, which is a form of negative feedback. Tropomyosin is pulled away from the myosin-binding site on actin. Troponin releases myosin and activates actin.
Biology
1 answer:
Solnce55 [7]3 years ago
8 0

Answer:

Tropomyosin is pulled away from the myosin-binding site on actin.

Explanation:

Actin and myosin are contractile proteins present in muscle cells. They interact with each other to cause muscle contraction.

When calcium binds to troponin protein, confirmational changes occur in troponin. It pulls tropomyosin away from myosin binding sites on actin. The sites become free and cross bridge is formed between myosin and actin which leads to muscle contraction. The process continues until no more calcium and ATP is available after which tropomyosin again covers the binding sites on actin.

You might be interested in
Describe how the smoking ban and increasing taxes on alcohol are designed to improve the health of nation
nasty-shy [4]
Because smoking can cause many different bad things to happen to you some examples would be lung cancer or if you smoke while you are pregnant you cold cause premature or birth defects to the baby, alcohol can just be bad a lot of the time because people can become addicted and loose a lot of money on buying alcohol and/or smoking materials.
5 0
3 years ago
Where is glucose stored or found in the leaf?
Elis [28]
Its stored in the chloroplasts
4 0
2 years ago
Read 2 more answers
the diagram below represents two cells, x and y which statement is correct concerning the structure labeled A ?
DaniilM [7]

The diagram below (attached image) represents two cells, X and Y.

Which statement is correct concerning the structure labeled A?

A) It is involved in cell communication in cell X but not in cell y.

B) It represents a cell wall in cell X and the cell membrane in cell y.

C) It prevents the absorption of CO2 in cell x and O2 and cell y.

D) It aids in the removal of metabolic waste in both cell X and Y ​

Cell membrane accomplishes several functions, among them, the removal of cell wastes. Option D. It aids in the removal of metabolic waste in both cell X and Y.

<h3>What is the cell membrane?</h3>

The cell membrane is a barrier that surrounds the cell content and isolates it from the extracellular space. It is composed of two lipidic layers, proteins, and glucans incrusted in between.

The cell membrane accomplishes many different functions. Among them, we can mention,

  • Isolation ⇒ It separates the intracellular content from the extracellular space.

  • Protection ⇒ It protects the interior of the cell from any damaging external factor that might affect its correct functioning.

  • Transport ⇒ It allows the selective pass of certain molecules or ions.

Substances interchange

⇒  Passive transport → Simple diffusion → through lipids

                                     → Facilitated diffusion → Assisted by channel  

                                        proteins

                                     → Does not need energy

                                    → Depends on the molecule size, the concentration                      

                                       at each side of the membrane, and the charge of      

                                       the ions.

                                      → Occurs in favor of the electrochemical gradient

⇒ Active transport → It does the energy to occur

                                → Mediated by carrier proteins

                                → Transport big-sized molecules

                                → Against the electrochemical gradient

⇒ Endocytosis/Exocytosis → Active transport mediated by vesicles.  

  • Communication ⇒ By emission and reception of substances and molecules, the cell can communicate with other cells. This process is always mediated by membranes and their transport proteins or receptor proteins.

In the exposed example X cell represents an animal cell, and Y cell is a plant cell.

Both the animal and plant cells are eukaryotic. They carry their genetic material in the nucleus and mitochondria. Organelles are located in the cytosol, and both of them are surrounded by a protector cell membrane.

Among the options, the correct one is D. It aids in the removal of metabolic waste in both cell X and Y

You can learn more about cell membranes at

brainly.com/question/13524386

#SPJ1  

7 0
1 year ago
What are some some similarities among all four types of molecules? list as many as you can
Ludmilka [50]
Carbon,hydrogen and oxygen
5 0
2 years ago
In the MSW landfill, what is contaminated water from wastes known as? In the MSW landfill, is contaminated water from wastes.
cupoosta [38]

Leachate

In the MSW (municipal solid waste) landfill, contaminated water from wastes is known as leachate. Leachate is the contaminated liquid (water) produced when percolating liquid, especially rainwater drains through wastes that are placed in a landfill. When the liquid enters wastes, it separates or filters out constituents from the wastes which result in the formation of leachate.  

4 0
3 years ago
Read 2 more answers
Other questions:
  • PLEASE ANSWER !
    5·1 answer
  • How does radiation differ from convection?
    15·2 answers
  • Which evolutionary mechanism is also called “survival of the fittest”?
    8·1 answer
  • A bird flew and landed on its swing. When the bird "hit" the swing, the swing began to move back and forth. What happened when t
    15·1 answer
  • Describe at least two ways bone functions in protection of the human body.
    12·2 answers
  • Kirisin is learning about the outer planets. What else would she know about a planet that is the second largest gas giant and ha
    14·2 answers
  • Which word equation summarizes the hydrolysis of a carbohydrate
    10·1 answer
  • Instead of having roots and leaves, molds grow as thread-like filaments called _____.
    5·2 answers
  • SOMEONE HELP ME PLZ!!!!!!!!!!!!
    10·2 answers
  • What happens to the water backed off of Lake Missoula
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!