Which of the following will cause a graded hyperpolarization on a postsynaptic neuron? a. a neurotransmitter binding to a chemically gated sodium channel b. a neurotransmitter binding to a voltage gated potassium channel c. a neurotransmitter binding to a chemically gated potassium channel d. a neurotransmitter binding to a voltage gated sodium channel

The diagrams show objects’ gravitational pull toward each other. which statement describes the relationship between diagram x and y? gravity attracts only larger objects toward one another. gravity attracts larger objects only if they are close to one another. if the masses of the objects increase, then the force between them also increases. if distance between the objects increases, then the amount of force also increases.

Apiece of metal with a length of 1.42 cm was measured using four different instruments. which of the following measurements is the most accurate?

How many grams of oxygen gas are contained in a 15 l sample at 1.02 atm and 28°c? show your work.