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
emmainna [20.7K]
3 years ago
9

What is the role of calcium in muscle contractions?

Biology
1 answer:
Firdavs [7]3 years ago
5 0

Answer:

Inside the muscle, calcium facilitates the interaction between actin and myosin during contractions (2,6). ... Calcium binds to the troponin, causing a position change in tropomyosin, exposing the actin sites that myosin will attach to for a muscle contraction (5,6). Blood Clotting. Without calcium blood would not clot.

Explanation:

You might be interested in
The mammary glands enlargement during pregnancy primarily as a consequence of what hormonal process?
Masteriza [31]

Answer:

c-hormonal hyperplasia

Explanation:

When there is increase in the number  of cells and tissues that appear normal under the  microscope,Hyperplasia is said to occur.If these occur in cells of an endocrine gland of a system,then it is refers to as hormonal hyperplasia.

Therefore during pregnancy,the proliferation of the glandular epithelium  in a pregnant woman (and at puberty in a females are examples of hormonal hyperlasia.

Its possible causes are;

a  surge in local production s of growth factors,

In the numbers of growth factors receptors on the  cells receptive to the factors,

and   due to activation of   specific intrancellular signalling pathways.

3 0
3 years ago
Any difference between members of the same species is:
lys-0071 [83]

Answer:

yikes

Explanation:

6 0
3 years ago
Read 2 more answers
What gas made up the largest portion of earth's atmosphere for most of earth's history
kipiarov [429]

Gases in Earth's Atmosphere. Nitrogen and Oxygen are by far the most common. Dry air is composed of about 78% Nitrogen (N2) and about 21% Oxygen (O2). Argon, Carbon Dioxide (CO2), and many other gases are also present in much lower amounts; each makes up less than 1% of the atmosphere's mixture of gases.

So therefore Oxygen is the gas that makes up the largest portion of the Earths Atmosphere.

7 0
3 years ago
In a ____ circulatory system, fluid is pumped through specialized, enclosed vessels.
mart [117]

Answer: B. Closed

In a closed circulatory system is the one in which the blood is circulated to all the parts of the body of the organism through vessels of different length and width. In this system the blood is pumped from the heart through blood vessels where it is transported to different organs and cells of the body instead of filling up the body cavity.

7 0
4 years ago
Read 2 more answers
What molecules are made during transcription
Softa [21]

Answer:

During transcription, only one strand of DNA is usually copied. This is called the template strand, and the RNA molecules produced are single-stranded messenger RNAs (mRNAs). The DNA strand that would correspond to the mRNA is called the coding or sense strand

Explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • Which term describes the chromosomal abnormality of having extra chromosomes?
    11·2 answers
  • Which genotype was obtained most often?
    11·1 answer
  • Which diagram shows an ionic bond?
    10·2 answers
  • Which substance might lead to potentially dangerous addictions if abused?
    6·2 answers
  • Content to be covered, activity sequence, training media, exercises, and the timing of each activity are considered parts of a:
    14·1 answer
  • Which features of how seedless land plants get sperm to egg are the same as for some of their algal ancestors?
    12·1 answer
  • In mammals the powerful muscle that aids in breathing is the A. diaphragm. B. kidney. C. cerebrum. D. placenta.
    8·2 answers
  • In certain dogs, large tails (L) and small tails (S) follow incomplete dominance.
    11·2 answers
  • Practice Problem
    6·1 answer
  • The ""duck and tilapia system’ and the pig deep litter system both ""recycle inputs"". what does it mean to recycle inputs? how
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!