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
aleksandrvk [35]
2 years ago
7

Calcium ions couple excitation of a skeletal muscle fiber to contraction of the fiber. where are calcium ions stored within the

fiber?
Biology
1 answer:
Firdavs [7]2 years ago
6 0
Calcium ions are stored in the sacoplasmic reticulum.  Sarcoplasmic reticulum plays an important role in storage and also acts as a release site for calcium. When calcium is released by the sarcoplasmic reticulum into the muscle it binds to the troponin, thus causing the tropomyosin to shift from the face of the actin filament to which myosin heads need to bind to produce a contraction.
You might be interested in
Not all members of a species are the same. Every species exhibits variations . , like eye color, are passed from parent to offsp
Klio2033 [76]
Inheritance!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

7 0
3 years ago
Tetanus is a(n): a. muscle contraction of sustained force resulting from repeated action potentials.b. contraction where the mus
Natali5045456 [20]

Answer: muscle contraction of sustained force resulting from repeated action potentials. (Option A)

Explanation: Tetanus is also called physiologic tetanus. Tetanus refers to the contraction of the muscle, which is established when the motor nerve that supply nerves to a skeletal muscle produces action potentials at a very high degree.

However, tetanic contraction is usually a normal process (such as when carrying a heavy box). Also, muscles can be shorten, lengthen or remain constant length during tetanic contractions.

7 0
3 years ago
The masses of all the substances either used up or formed during photosynthesis are shown below: A = 192 grams, B = 108 grams, C
qwelly [4]

Answer:

B.) The total mass of B and C, which are water and carbon dioxide, is equal to the total mass of A and D, which are oxygen and glucose.

Explanation:

The following statements that support the conclusion that photosynthesis follows the law of conservation would be B.) The total mass of B and C, which are water and carbon dioxide, is equal to the total mass of A and D, which are oxygen and glucose. We can conclude this because the law of conservation states that for any transfer of mass, it will always stay the same, meaning that you cannot add to it nor remove from it. Option A would not be correct because the question asked about photosynthesis, and A is describing cellular respiration. Options C and D would also not be correct because when you add up the values in the way that they are listed, it does not sum up to the statement. Here are all of the letter combinations added together, based on the letter choices:

B and C ➡ 372

A and D ➡ 372

A and B ➡ 300

C and D ➡ 444

A and C ➡ 456

B and D ➡ 288

Notice how the first two listed add up to 372. And because this matches option B, that will be your answer.

Read more on Brainly.com - brainly.com/question/9949912#readmore

5 0
2 years ago
Which factors affect the rate of photosynthesis? Select all that apply. A).light intensity B).pH C).temperature D).chlorophyll d
sashaice [31]

Answer:

C.)

Explanation:

4 0
3 years ago
Read 2 more answers
Large biological molecules such as dna and rna contain ________ bonds.
yarga [219]
The answer is covalent! Hope it helps!
6 0
3 years ago
Other questions:
  • What is the correct order of a signal being transmitted across a neuromuscular junction?
    9·1 answer
  • Type of diffusion requires a protein to move particles from high concentration to low concentration?
    7·1 answer
  • Which of the following statements
    7·1 answer
  • during some kinds of population growth the size of each generation of offspring is larger than the generation before it so as th
    8·1 answer
  • Racial stratification is almost extinct, thanks to reform attempts. true or false
    7·2 answers
  • what happens to the thickness of the uterine lining when the level of the hormone progesterone reaches its highest levels
    5·1 answer
  • What is a biotic factor?
    12·1 answer
  • If all land on Earth was still connected how would this affect biodiversity​
    9·1 answer
  • These three questions hard asab​
    7·1 answer
  • 5. Cranberries have a pH between 2.3 and 2.5. This makes them an
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!