Homework Answers
The contraction occurs in a cascade manner. So, contraction needs a few steps to occur properly. The structure which needs to leaky is the sarcoplasmic reticulum which stores calcium ions in it.
When a stimulus reaches the sarcolemma and propagated through the T tubule, the sarcoplasmic reticulum adjacent to it reacts to it. The DHPR and Ryanodine receptors facilitate the release of Calcium into the sarcomere. Which then binds to troponin and causes a conformational change that causes tropomyosin to unmask the binding site.
So, the structure that has to be leaky is the Sarcoplasmic Reticulum.
Add Answer to:
b. Which structures must have become leaky for contraction to occur?
Make a Muscle Contraction Flowchart. Show what machinery is used such as protein and structures, what...
Make a Muscle Contraction Flowchart. Show what machinery is used such as protein and structures, what steps occur, and changes in I band, H zone, A band, etc.
1. Which of the following is/are required for natural selection to occur? A. The trait must...
1. Which of the following is/are required for natural selection to occur? A. The trait must be used or it will no longer be passed down B. Trait must be inherited from the father, not mother C. The species could produce more offspring than their environment can support D. Members of the population must have inherited traits that could vary E. Members must have an equal ability to survive and reproduce 2. Which of the following statements is/are true? A....
1. Which statements are true about resonance contributing strcutures? (a) All contributing structures must have the...
1. Which statements are true about resonance contributing strcutures? (a) All contributing structures must have the same number of valence electrons. (b) All contributing structures must have the same arrangement of atoms (c) All atoms in contributing structures must have complete valence shells. (d) All bond angles in sets of contributing structures must be the same.
draw a short comic that illustrates the steps of muscle contraction (including stimulus for contraction, excitation-contraction...
draw a short comic that illustrates the steps of muscle contraction (including stimulus for contraction, excitation-contraction coupling, contraction, cross bridge cycling, and relaxation). Your finished drawing should have a minimum of 7 “panels” - one for each step of muscle contraction listed above, and one each for the establishment and the conclusion of the story you are telling. All chemical and structural participants in this complex interaction should be accounted for. All components of your comic should be labelled (which...
Which is a stronger acid? Must explain with both, words and structures. Which is a stronger...
Which is a stronger acid? Must explain with both, words and
structures.
Which is a stronger base? Must explain with both, words and
structures.
. Propose a mechanism for the following reaction:
2. a) Which is a stronger acid? Must explain with both, words and structures.10 pts. LOH OH 8 or b) Which is a stronger base? Must explain with both, words and structures. 5 pts. 3. Propose a mechanism for the following reaction: 15 pts. OH CH, CH H2SO4...
Which of the following statements about skeletal muscle contraction is false? During muscle contraction, the Z...
Which of the following statements about skeletal muscle contraction is false? During muscle contraction, the Z discs move closer together as the myosin heads move toward the plus ends of the actin filaments. The changes in voltage across the plasma membrane that occur when a muscle cell receives a signal from the nervous system causes Ca2+ to flow into the sarcoplasmic reticulum, triggering a muscle contraction. An action potential in the muscle cell plasma membrane leads to voltage-gated calcium channels...
QUESTION 99 Which of the following occurs during "leaky scanning: A. the ribosome will bind even...
QUESTION 99 Which of the following occurs during "leaky scanning: A. the ribosome will bind even in the absence of a cap group OB. the cell begins to rapidly lose fluids OC. the ribosome skips at least one AUG and begins at a subsequent AUG downstream D.ribosomes begin to stutter at a UUUUUUU sequence O E. RNA-dependent RNA polymerase begins to stutter at a UUUUUUU sequence QUESTION 100 Transcription and genome replication occur inside the capsid for which of the...
1. In the left ventricle, why does isovolumetric (isometric) contraction occur during the first phase of...
1. In the left ventricle, why does isovolumetric (isometric) contraction occur during the first phase of ventricular systole? A. The bicuspid valve needs time to sit before the ventricle can eject blood. B. Ventricular pressure is greater than atrial pressure so the ventricle cannot eject blood. C. The ventricle is still filling with blood and therefore cannot eject blood during this time. D. Aortic pressure is higher than ventricular pressure and the ventricle must pressurize the blood to open the...
NAME SID 25. Usted below are different steps that occur during the excitation and contraction of...
NAME SID 25. Usted below are different steps that occur during the excitation and contraction of a muscle fiber. Please select the correct sequence in which these stages occur. 1) Ca2+ binds to Tropomyosin, causing a conformational change that unblocks cross-bridge binding sites. 2) The Sarcoplasmic Reticulum is depolarized, which opens up Voltage-Gated Channels that release Ca2+ into the cytoplasm. 3) The Action Potential then travels along the cell membrane and down transverse tubules that extend into the muscle fiber....
write three nonequivalent resonance structures for PO4^3- . all resonance structures must have all formal charges...
write three nonequivalent resonance structures for PO4^3- . all resonance structures must have all formal charges shown. which structure contributes most to the actual structure (s) and why. A typed answer is prefered.
Which is a stronger acid? Must explain with both, words and
structures.
Which is a stronger base? Must explain with both, words and
structures.
. Propose a mechanism for the following reaction:
2. a) Which is a stronger acid? Must explain with both, words and structures.10 pts. LOH OH 8 or b) Which is a stronger base? Must explain with both, words and structures. 5 pts. 3. Propose a mechanism for the following reaction: 15 pts. OH CH, CH H2SO4...
Which of the following statements about skeletal muscle contraction is false? During muscle contraction, the Z discs move closer together as the myosin heads move toward the plus ends of the actin filaments. The changes in voltage across the plasma membrane that occur when a muscle cell receives a signal from the nervous system causes Ca2+ to flow into the sarcoplasmic reticulum, triggering a muscle contraction. An action potential in the muscle cell plasma membrane leads to voltage-gated calcium channels...
QUESTION 99 Which of the following occurs during "leaky scanning: A. the ribosome will bind even in the absence of a cap group OB. the cell begins to rapidly lose fluids OC. the ribosome skips at least one AUG and begins at a subsequent AUG downstream D.ribosomes begin to stutter at a UUUUUUU sequence O E. RNA-dependent RNA polymerase begins to stutter at a UUUUUUU sequence QUESTION 100 Transcription and genome replication occur inside the capsid for which of the...
NAME SID 25. Usted below are different steps that occur during the excitation and contraction of a muscle fiber. Please select the correct sequence in which these stages occur. 1) Ca2+ binds to Tropomyosin, causing a conformational change that unblocks cross-bridge binding sites. 2) The Sarcoplasmic Reticulum is depolarized, which opens up Voltage-Gated Channels that release Ca2+ into the cytoplasm. 3) The Action Potential then travels along the cell membrane and down transverse tubules that extend into the muscle fiber....
Most questions answered within 3 hours.
-
1. An object weighing 40 N rests on a surface. The coefficient
of friction is 0.35....
asked 14 minutes ago -
Investor company owns 35% of investee company voting stock and
accounts for the investment under the...
asked 1 hour ago -
The number of major faults on a randomly chosen 1 km stretch of
highway has a...
asked 1 hour ago -
Consider the competitive environment of Starbuck's, Progressive
Insurance, a manufacturing firm with low turnover, or a...
asked 2 hours ago -
3. Gains from trade
Consider two neighbouring island countries called Euphoria and
Contente. They each have...
asked 4 hours ago -
A business executive has the option to invest money in two
plans: Plan A guarantees that...
asked 6 hours ago -
Hello, can someone please help me answer this question?
How much heat is absorbed by a...
asked 6 hours ago -
. A marketing researcher conducted a survey of 25 shoppers
randomly selected at the local mall...
asked 6 hours ago -
Create an comprehensive response to the
following:
Antimicrobial agents work on a multitude of microbes (bacteria,...
asked 6 hours ago -
6.13 LAB: Step counter. Section 6.3.
A pedometer treats walking 2,000 steps as walking 1 mile....
asked 6 hours ago -
(14.2) A block of mass m = 10 kg riding on a frictionless
horizontal plane is...
asked 6 hours ago -
Use any search engine to search for articles about Starbucks
partnership with Tata Companies in India...
asked 6 hours ago