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Jlenok [28]
2 years ago
5

a person dies, and within hours, the skeletal muscles develop a locked contraction known as rigor mortis. calcium ions leak from

the sarcoplasmic reticulum into cytoplasm. from your knowledge of cross bridge cycling, what best explains this rigor?
Chemistry
1 answer:
musickatia [10]2 years ago
8 0

Rigor mortis is the stiffening of the body after death. After death, the body begins to get cold. From about two to six hours after death, the muscles start to stiffen, probably because the actin and myosin filaments of the muscle slide into each other. The rigor mortis starts at the eyelids, jaw and neck and then slowly spreads to all parts of the body within six hours.

Contrary to popular belief, rigor mortis will occur more quickly in high ambient temperatures than in cold conditions. This is because the underlying chemical reaction occurs faster at higher temperatures.  

Learn more in brainly.com/question/14139041

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Is Orange Juice with Pulp is Heterogeneous<br> or Homogeneous Mixture?
nalin [4]

Answer:

I think so henterogeneous

8 0
4 years ago
In what situation do we use a volumetric flask, conical flask, pipette and graduated cylinder? Explain your answer from accuracy
Ad libitum [116K]
A volumetric flask is used to contain a predetermined volume of substance and only measures that volume, for example 250 ml.
Conical flasks can be used to measure the volume of substances but the accuracy they provide is usually up to 10ml. Conical flasks are used in titrations, reactions where the liquid may boil, and reactions which involve stirring. 
Pippettes are of two types, volumetric and graduated. Pippettes are used where high accuracy is required and volumetric pippettes come in as little as 1 ml. Pippettes are usually used in titrations.
Graduated cylinders come in a wide variety of sizes and their accuracy can be down to as much as 1 ml. They are used to contain liquids.
3 0
3 years ago
A solution contains 15 grams of salt per litter of solution. How many grams of salt are in 3.3 litters of solution?​
Verizon [17]

49.5g

Explanation:

Mass of salt = 15g

Volume of solution = 1L

Volume of given solution = 3.3L

Unknown:

Mass of salt in the solution = ?

Solution:

Since we have been given the concentration of the salt in the solution, we can use it to solve the problem.

Concentration; 15g/L

Given;

    In 1L of the solution we have 15g of salt,

In    3.3L of the solution we will have 3.3 x 15 = 49.5g

The salt is the solute and it represents the dissolved substances.

learn more:

Concentration brainly.com/question/4641902

#learnwithBrainly

7 0
3 years ago
Which phrase best describes igneous rock
Luden [163]
Forms when lava and magma cool (A)
4 0
3 years ago
Read 2 more answers
What is the result of cooled, solidified lava?
Dahasolnce [82]
Cooled, solidified lava is called igneous rocks.
8 0
4 years ago
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