Do all cells in the population express insulin receptor on their surface? Is this expression dependent on the presence of insulin? Explain.

Why do we perceive objects as retaining their brightness under different lighting levels?

How many chromosomes are in a human gamete?

1. you serve a volleyball with a mass of 2.1 kg. the ball leaves your hand with a speed of 30 m/s. the ball has energy. calculate it. 2. a baby carriage is sitting at the top of a hill that is 21 m high. the carriage with the baby weighs 12 n. the carriage has energy. calculate it. 3. a car is traveling with a velocity of 40 m/s and has a mass of 1120 kg. the car has . calculate it.