Which meaning of a word refers to exactly what it is

Which substances are responsible for accelerating chemical reactions in cells? a) amino acids b) enzymes c) nucleic acid d) lipids

How do prokaryotes differ from eukaryotes? How are they similar?

Is chalk a colloid, suspension, element, compound, or a mixture

How do you know that a speedometer tells you the instantaneous speed of a car?

A scientist does an experiment on mice. She feeds one group of mice regular food and a second group of mice blueberries. The scientist keeps all of the other conditions exactly the same.

One microgram contains how many grams?

While John is traveling along a straight interstate highway, he notices that the mile marker reads 241 km. John travels until he reaches the 134 km marker and then retraces his path to the 167 km marker.

What are the forces that make an object move

Which causes a rainbow in the sky? a. Sunlight (white light) is refracted as it passes through different layers in the atmosphere. b. Sunlight (white light) refracts when it passes through droplets of water in the atmosphere. c.

A solenoid used to produce magnetic fields for research purposes is 2.4 m long, with an inner radius of 30 cm and 1500 turns of wire. When running, the solenoid produced a field of 1.1 T in the center.