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]
3 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]3 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
True or false the genotype of an organism constitutes its observable characteristics
iren2701 [21]
False

The genotype of an organism does not constitute its observable characteristics but rather its phenotype. A genotype of an organism is the genetic makeup of an organism while the phenotype is the visible characteristics.
It is, however, significant to understand that the phenotype of an organism is as a result of the interaction between the genotype and the environment. 
4 0
3 years ago
How does a frogs skeletal and muscular system work together
Sedbober [7]
Muscular: The muscular system helps the frog to move. This system can help them escape from predators and catch prey. 

<span>Skeletal: The skeletal system provides support for the frogs body. This system goes along with the muscular system  

the skeletal part is support for the muscular parts</span>
7 0
4 years ago
Gluconeogenesis shares some, but not all, enzymes with the glycolytic pathway. It would appear to be more efficient if both path
viva [34]

Answer:

D) Three of the reaction steps in gluconeogenesis would have prohibitively large, positive free energies if they used glycolytic enzymes for their catalysis.

Explanation:

The glycolytic enzymes catalyze the conversion of glucose to pyruvate, while gluconeogenesis enzymes catalyze the formation of carbohydrates from pyruvate.

8 0
3 years ago
In the southeastern United States, marshes are dominated by two species of smooth cordgrass; Spartina alterniflora dominates the
Olin [163]

Answer:

Option-4

Explanation:

In the given question, S. alterniflora grows in the seaward marsh whereas  S. patensis grows in the high marsh. When  S. alterniflora is removed, the S. patensis grows to a smaller portion whereas if S. patensis is removed, the  S. alterniflora covers all the land.

This shows that although both are different species but they share a niche and the marsh land is the fundamental niche of the  S. alterniflora as it can grow in all parts and therefore its distribution is limited by only a realised niche.

Thus, Option-4 is correct.

8 0
3 years ago
The term meaning the freeing of a kidney from adhesions is:
Valentin [98]

Answer:

Ureteroplasty is surgery to remove the stricture.

Explanation:

6 0
3 years ago
Other questions:
  • Which of these individuals is likely to be most successful in an evolutionary sense?
    6·1 answer
  • Why is progesterone production in the corpus luteum important in the first trimester of pregnancy?
    12·1 answer
  • How might a substitution mutation affect a person's traits
    7·1 answer
  • Why are scientists concerned about species loss if extinction is a natural process
    8·1 answer
  • Where does an organism get its unique characteristics?
    12·1 answer
  • 1. At what pH do the following enzymes work best?<br> Suerase:<br> b. Trypsin:
    11·1 answer
  • The three main domain was identified by
    13·2 answers
  • A dichotomies key for insects is given. To what order does an insect with two pairs of scaly wings belong
    9·1 answer
  • What effect do enzymes have on chemical reactions?
    6·1 answer
  • What would happen to a signaling pathway if phosphatases had reduced levels of function?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!