Consider the malate dehydrogenase reaction from the citric acid cycle. Given the listed concentrations, calculate the free energy change for this reaction at energy change for this reaction at 37.0 ∘ C 37.0 ∘C (310 K). Δ G ∘ ′ ΔG∘′ for the reaction is + 29.7 kJ/mol +29.7 kJ/mol . Assume that the reaction occurs at pH 7. [malate] = 1.25 mM [malate]=1.25 mM [oxaloacetate] = 0.260 mM [oxaloacetate]=0.260 mM [NAD + ] = 270 mM [NAD+]=270 mM [NADH] = 110 mM

A100-watt light bulb radiates energy at a rate of 100 j/s. (the watt, a unit of power or energy over time, is defined as 1 j/s.) if all of the light emitted has a wavelength of 525 nm , how many photons are emitted per second?

Sarah wants to know where in her garden chamomile would grow the best. she thinks chamomile will grow best in the corner of the garden that gets the most sunlight. to test her hypothesis, she decides to plant several groups of chamomile in her garden as an experiment. which of the following variables will sarah need to measure to know which group of plants grew best? a. the location of the plants b. the type of plants c. the height of the plants d. the amount of water she gives the plants

What effect might melting sea ice have for people who live in coastal areas?