Paper B Revision

Flashcard
•
Biology
•
11th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the role of ATP in muscle contraction?
Back
It breaks down into ADP and phosphate to release stored energy.
2.
FLASHCARD QUESTION
Front
What is the rapid change in polarity across the axon membrane as the nerve impulse occurs?
Back
Action potential.
3.
FLASHCARD QUESTION
Front
What structure stores Calcium in the muscle cell?
Back
Sarcoplasmic Reticulum.
4.
FLASHCARD QUESTION
Front
What is the function of the urethra in the excretory system?
Back
Transport urine out of the body.
5.
FLASHCARD QUESTION
Front
What is a crossbridge?
Back
Where myosin head binds to myosin binding site on actin.
6.
FLASHCARD QUESTION
Front
What is the primary energy currency of the cell?
Back
ATP (Adenosine Triphosphate).
7.
FLASHCARD QUESTION
Front
What is the function of troponin in muscle contraction?
Back
Troponin binds calcium ions and causes a conformational change that allows myosin to bind to actin.
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