Which of these is the portion of the heartbeat that involves contraction of the heart?
A) pacemaker B) systole C) diastole D) cardiac cycle
Answer: B
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Which of the following describe a role that ethylene plays in plant physiology. Check all that apply.
_____ Retarding stem and root elongation. _____ Hastening the ripening of fruit. _____ Inhibition of leaf abscission. _____ Inhibition of lateral bud growth. _____ Accelerates the loss of damaged fruits.
All of the following processes are located within a membranous structure EXCEPT
A. protein synthesis (translation). B. cell respiration - electron transport chain. C. photosynthesis - light reactions. D. intracellular digestion of food particles.
Which cellular component is common to all cell types?
a. cell wall b. mitochondria c. cytoplasm d. nucleus e. endoplasmic reticulum
During glycolysis, glucose is broken down into
A. ATP. B. NADH. C. acetyl CoA. D. oxygen. E. pyruvate.