In vitro kinetic studies show lead inhibits ALA dehydratase with a Ki of 0.1 µM, but inhibits ferrochelatase with a Ki of 10 µM. Based on these binding affinities, which enzymatic reaction would be expected to show reduced activity at the lowest (earliest, most sensitive) blood lead levels?

Indicate the specific type of synovial joint moving plus the movement described for each listed action: TYPE OF SYNOVIAL JOINT MOVEMENT (write one only) Bending the elbow Turning the head from center to the side Lowering your arm from a T down to your side (in the coronal plane) Rolling your ankle/ turning the sole of the foot medially

Section 1: Multiple Choice/True False Provide the best response for each of the following 20 multiple choice questions (2 points each).  

A sheet of copper is pulled at constant velocity v from a region that contains a uniform magnetic field.  At the instant shown in the figure, the sheet is partially in and partially out of the field.  The induced emf in the sheet leads to the eddy current shown.  Which one of the following statements concerning the direction of the magnetic field is true?

What is one disadvantage of using 2 or 3 day food records to analyze an athletes dietary intake (the athlete records their diet) versus using a 24 hour dietary recall method? (comment based on accuracy, timing, reproducibility, and/or ease of use)

In sports involving intermittent high-intensity exercise, most of the energy is supplied by which of the following?

Which of the following popular sports nutrition supplements is rich in dietary nitrate?  Choose one.

What is one reason related to athletic performance why athletes who are serious about their sport, not consume alcohol during periods of training and competition?

1) In humans, what % of all energy produced in metabolism is used to accomplish work? 2) What is the remainder primarily used for?

What is one reason is it difficult to maintain high energy intakes during very long duration intense activity? (four possibilities from the lecture)