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Which of the following happens at the same time as the powerstroke?

The resting membrane potential of most cells is negative. Explain two reasons why.

In skeletal muscle, ATP is needed to pump calcium during relaxation. Which of the following best describes the calcium pump found in skeletal muscle?

Primary muscle type found in muscles that move the eye

One way to increase the force that a muscle can generate is through recruitment of additional motor units. First, define what a motor unit is. Then, explain how this relates to the concept of recruitment and how recruitment causes a muscle to generate more force.

Which of the following have an enol form? I. benzaldehyde, C6H5CHO II. 2,2-dimethylpropanal, (CH3)3CCHO III. 2-chloropropanal, CH3CHClCHO A)  only I    B)  only II    C)  only III    D)  all of them have an enol form

Which of the following could be used as the missing reagent to carry out the following transformation? A) CH3CH=O C) CH3CH2CH2Br B) CH3CH2CH2OH D) CH3CH2CH2CH2I  

Identify the most acidic hydrogen in the following compound.    A)  1    B)  2    C)  3    D)  4

Which one of the following has two different enol forms?     A) cyclohexanone C) 3,3-dimethylcyclohexanone   B) 2,2-dimethylcyclohexanone D) 4,4-dimethylcyclohexanone

Which of the following has the highest percentage of enol in a keto-enol equilibrium? A)  hexanal    B)  2-hexanone    C)  2,4-hexanedione    D)  2,5-hexanedione