Which substances are responsible for accelerating chemical reactions in cells?

a) amino acids

b) enzymes

c) nucleic acid

d) lipids

Which of the following wires will have the least resistance? a. A long thin wire b. A short thin wire c. A short thick wire d. A long thick wire

A serving of french fries releases 320 kcal (1 kcal = 4.18 kJ) when digested by your body. If this same amount of energy were transferred to 1.5 kg of water at 30°C, what would the final temperature

Is a lung a living organism, why or why not?

What are some of the physical benefits to be derived from aerobic

A 1500 kg roller coaster train is at rest at the top of a 65 m drop before it begins to travel down the hill. At the bottom of the hill how fast is the train moving?

Which describes a property shared by ultraviolet light and X-rays? A They are both transverse waves. B They share the same wavelength. C They contain less energy than visible light. D They both require a medium to travel through.

What is the potential energy called that is associated with objects that can be stretched

Which of the following is not a current use of radioisotopes? medical diagnosis sterilization of equipment detection of leaks in building structures light fixtures

A Blu-ray disc is approximately 11 centimeters in diameter. The drive motor of a Blu-ray player is able to rotate up to 10,000 revolutions per minute. (a) Find the maximum angular speed (in radians per second) of a Blu-ray disc as it rotates

A body has translatory motion if it moves along a