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
Marina CMI [18]
3 years ago
9

Adenosine triphosphate (ATP), is often referred to as the energy currency of the cell. Wich of the following cellular processes

does not require the use of ATP?
1.Muscle contraction
2.cell division
3.hair growth
4.osmosis
Biology
1 answer:
klasskru [66]3 years ago
3 0

Answer:

4

Explanation:

You might be interested in
You measure levels of Ca2+ in various locations within a motor neuron and a skeletal muscle fiber when the motor neuron is NOT d
gogolik [260]

Answer:

The correct answer is 3: "<em>High levels of Ca2+ are expected to be found </em><em>within the sarcoplasmic reticulum</em>".

Explanation:

Muscular contraction is a highly regulated process that depends on free calcium concentration in the cytoplasm. Amounts of cytoplasmic calcium are regulated by <u>sarcoplasmic reticulum</u> that functions as a storage of the ion.

When a nerve impulse reaches the membrane of a muscle fiber, through acetylcholine release,  the membrane depolarizes producing the entrance of calcium from <u>extracellular space</u>. The impulse is transmitted along the membrane to the sarcoplasmic reticulum, from where calcium is released.  At this point, <em>tropomyosin is obstructing binding sites for myosin on the thin filament</em>. The calcium channel in the sarcoplasmic reticulum controls the ion release, that activates and regulates muscle contraction, by increasing its cytoplasmic levels. When <em>calcium binds to the troponin C</em>, <em>the troponin T alters the tropomyosin by moving it and then unblocks the binding sites,</em> making possible the formation of <em>cross-bridges between actin and myosin filaments.</em> When myosin binds to the uncovered actin-binding sites, ATP is transformed into ADP and inorganic phosphate.

Z-bands are then pulled toward each other, thus shortening the sarcomere and the I-band, and producing muscle fiber contraction.

4 0
3 years ago
Scientist think earth is approximately how old?
astra-53 [7]
The earth is about 6,000 years old.
4 0
3 years ago
Read 2 more answers
Cell membranes are made up of a phospholipid bilayer. Which part of the phospholipid bilayer interacts with water, and which par
ki77a [65]
The part of the phospholipid bilayer that interacts with water would be the hydrophilic portion consisting of the polar phosphate group. The hydrophobic tails which are the fatty acid chains will not interact with the water present in the aqueous environment.
5 0
3 years ago
Read 2 more answers
What is average size clutch of sea turtle egg
MA_775_DIABLO [31]
<span>sea turtles lay 110 eggs in a nest</span>
4 0
3 years ago
Anybody want points??? 100p for free<br> Luv u guys
jolli1 [7]

Answer:

THX

Explanation:

5 0
3 years ago
Read 2 more answers
Other questions:
  • The three basic components of analog and digital signals are: amplitude, frequency, and ____.
    9·1 answer
  • Requirements for ______ increase by 50% during pregnancy. rev: 03_07_2017_qc_cs-81797
    11·1 answer
  • Stars may shine brighter or dimmer depending on their age. What else may affect how brightly we see a star’s light?
    7·2 answers
  • In the Linnean taxonomical system _____. The highest level is the family. The Animalia kingdom is the largest. Organisms are nam
    10·1 answer
  • If you flip a penny 99 times and each time it came up heads then the chance of the penny coming up heads is ___
    6·1 answer
  • You want to determine the various species of birds in your backyard. Identify three sources that you could use to
    6·1 answer
  • Can someone pplease help me ASAP please
    9·1 answer
  • A Pansy is a small flowering plant. You often see many red and many white flowers in outdoor garden beds. If the red and white c
    6·1 answer
  • U
    10·1 answer
  • An arrangement or display of autosomes and sex chromosomes in pairs is known as:_______
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!