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vampirchik [111]
3 years ago
15

Skeletal muscle contraction requires large amounts of energy in the form of _____________________ in order to complete the seque

nce of cyclic events that lead to sarcomere shortening.
Biology
1 answer:
Elis [28]3 years ago
5 0

Answer:

ATP

Explanation:

ATP is essential for both contraction and relaxation of muscles, with calcium being the main factor for the affinity between actin and myosin, in order to reach the sarcomere shortening phase.

The function of ATP is to release energy for the occurrence of movement, in addition to other actions. While there is calcium bound to troponin, there is cross-bridge(projections of actin filaments) cycling and muscle contraction.

Thus, ATP has three main functions in muscle contraction:

Providing energy to shorten the sarcomere, enabling actomyosinic shutdown by physical-chemical interaction to the thick filament and supporting the calcium pump, which ends the cycling of the cross bridges.

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How are the lytic and lysogenic cycles similar and different in terms of process and infection?
ELEN [110]

Answer:

<h2>Lytic cycle: involve that there is rupture( lysis) of the host cell and release many copies of virus. </h2><h2>Lysogenic cycle:  involve the insertion of the nucleic acid of a bacteriophage into host genome, known as prophage. </h2>

Explanation:

There are many  similarities and differences between lysogenic and lytic cycles that;

1. Lysogenic cycle of bacteriophage :

i)  in lysogenic cycle:  bacteriophage insert its DNA with that of a host, known as prophage and it replicates with host.

2. Lytic cycle of bacteriophage:

i) lytic cycle is that it results in many copies of the virus very quickly and the cell is ruptured and many copies of virus are released.

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3 years ago
Very low concentrations of detergent make membranes leaky to small molecules and ions without damaging proteins. In isolated mit
Grace [21]

Options

A. Yes, because all enzymes and electron carriers are functional

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C. No, because leaky membranes inhibit glycolysis

D. No, because leaky membranes do not allow NADH and FADH2 to donate their electrons to the electron transport chain

Answer:

B. No, because with a leaky membrane, the proton gradient cannot be maintained

Explanation:

The proton motive force (PMF) provides the needed pump  to generate electrochemical gradients of proton needed for continue influx  into the matix of the mitochondria. The proton Influx generates the energy needed by  protein ATPase Synthase for  synthesis  of ATPs by adding inorganic phosphate to ADP to give ATP.

               ADP + Pi -----------→ ATP.

If the mitochondria;l  intramembrane leaks, then the PMF can  not be sustained, therefore electtrochermical gradient which supplies the energy for ATP synthase for ATP synthesis will not be available. Therefore ATP synthesis stops.

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galben [10]
It’s phenotype is brown fur.
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Answer:

False

Explanation:

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