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evablogger [386]
3 years ago
11

How are the events of excitation-contraction coupling in cardiac muscle cells similar to skeletal muscle cells?

Biology
1 answer:
nadezda [96]3 years ago
7 0
The events of excitation-contraction coupling in cardiac muscle cells are similar to skeletal muscle cells through electrical activity. <span />
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What does head mean in frog
Vilka [71]
An individuals head with the similarity of a frog mind or has no throat.



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3 years ago
Which part of an enzyme molecule binds to its associated substrate?
anzhelika [568]
The part of the enzyme molecule that binds to its associated substrate is ACTIVE SITE.
The active site contains the catalytic groups which are amino acids which promote the formation and the break down of bonds. By breaking and forming new bonds, the enzyme substrate interaction brings about the formation of the transition state.
8 0
3 years ago
Both myoglobin and hemoglobin exhibit cooperative binding to oxygen. True or False
lys-0071 [83]

Answer:

False.

Explanation:

An Haemoglobin molecule  is made up of 4-polypeptides, with each of the polypeptide chain containing an haem group. These haem group can bind with one oxygen atom each.

T<u>he binding of the first oxygen atom  by the first haem group weakens the tertiary protein   structure  of  Quaternary structure  Hb, thus it makes it easier for the second Oxygen atom to bind faster, and the 3rd oxygen very fast and the 4th oxygen atom the fastest.These accelerated binding of the oxygen atoms, facilitated by the first binding O2, is called cooperative binding.It aids oxygen binding capacity and tranport functions  of Hb,</u>

<u />

<u>Myoglobin is an oxygen storage protein in  muscles, and not oxygen carrying molecule, It releases  stored O2 only in condition of low oxygen supply</u>.It has   one haem group in its molecule.Therefore its structural features can  not  carry out  cooperative binding.

6 0
3 years ago
I need help with this question please
MaRussiya [10]

Answer:

Raise the beams in less time

Explanation:

As the crane carries the beams in a lesser time its energy will reduce by time

6 0
2 years ago
How do sieve tubes elements group to make sieve tubes
kumpel [21]
<em>sieve tube elements are the cells of phloem which allow transportation of photosynthates through phloem...
<u>how sieve tube elements form sieve tubes:
</u>sieve tube elements are connected end to end and form a long chain which is called sieve tube,,,,
sieve tube elements are connected with the help of a side chain with the help of peptide bond...also one element has tapering end which easily overlaps with other end of next element to form sieve tube,,,,</em>

3 0
3 years ago
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