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
hodyreva [135]
4 years ago
9

Arrange the steps in the correct order to explain how a muscle fiber contracts. Myosin and actin protein filaments attach to eac

h other. Calcium ions release into the myofibrils. Myosin filaments pull on the actin filaments. The nerve impulse reaches the neuromuscular junction. The motor neuron carries the nerve impulse. The sarcomere shortens.
Biology
1 answer:
Bingel [31]4 years ago
7 0

The motor neuron carries the nerve impulse.

↓

The nerve impulse reaches the neuromuscular junction.

↓

Calcium ions release into the myofibrils.

↓

Myosin and actin protein filaments attach to each other.

↓

Myosin filaments pull on the actin filaments.

↓

The sarcomere shortens.

The neurotransmitter (ACh) from motor neurons signals a muscle fiber to depolarize. The depolarization (Na+) will trigger Ca++ release and will initiate contraction by binding to troponin. Myosin pulls the actin strands. ATP sustains the contraction.

You might be interested in
What keeps Earth's surface warm? <br><br> The answer choices are above. please answer!
AysviL [449]
Convection keeps the earths surface warm
6 0
3 years ago
Read 2 more answers
What's another word for plant sex?
Sholpan [36]

Answer:

A. Photosynthesis

Explanation:

7 0
3 years ago
Read 2 more answers
Compare and contrast polysaccharides and nucleic acids in terms of monomer diversity and how they monomers are joined together
harkovskaia [24]

The monomer units of the carbohydrates vary in their total numbers extensively. Moreover, positions of the carbonyl groups along with the orientation of the hydroxyl groups also vary in the carbohydrates' monomers. The presence of any modification is also variable.

On the other hand, the nucleic acids have only 4 monomeric units. The linkages between the nucleic acid residues have less geometry than the glycosidic linkages.

4 0
3 years ago
Read 2 more answers
What characteristics of life is a virus missing
cricket20 [7]

Answer:

They don't reproduce independantly but have to invade other cells.

Explanation:

6 0
3 years ago
Read 2 more answers
What type of relationship does a cat and tapeworm have?
stellarik [79]

Answer:

Parasitism.

Explanation:

Parasitism is an association in which one organism, lives on another, the host, deriving benefit from it and causing harm to it.

The tapeworm here is a parasite and it lives inside the cat's(host) body where the tapeworm is specialized for its mode of life. It survive and reproduces very well without needing another specie because it is a hermaphrodite. It causes loss or poor development of unwanted organs such as the digestive, sense organs and muscles. Its long flattened body also provides a large surface area for absorption of nutrients too.

7 0
3 years ago
Other questions:
  • _____ use biology in their work. Dentists Dietitians Zoologists All of the above
    6·2 answers
  • Which of the following statements does not accurately describe stem cells?
    9·1 answer
  • Cells exchange what with other cells
    7·1 answer
  • What is the boiling point of tap water with 3 tablespoons of table salt in it?
    13·2 answers
  • Dichotomous keys ask open-ended questions about animal behavior. open-ended questions about easily observable characteristics. y
    15·1 answer
  • What creates global winds?
    13·1 answer
  • What are two ways bacteria and protists can be helpful to people?
    13·1 answer
  • For what reason did south sudan split from sudan in 2011
    7·2 answers
  • "Housekeeping genes" in bacteria are commonly expressed constitutively, but not all of these genes are expressed at the same lev
    5·1 answer
  • The reaction that creates ATP from ADP and Pi is energetically unfavorable. That means that it requires energy to carry out the
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!