The digestive system and the excretory system both excrete waste. Which best describes how waste is secreted in each system?

Crossing-over involves the exchange of genetic information between a. rna strands. b. sex chromosomes. c. non sister chromatids. d. different genes.

What is the name of the reaction that links monomer units into polymers while removing a molecule of water from the reactants

Define virus and virion, and describe the parts of a virion.

Carbon dioxide is removed from the bloodstream by the? stomach, heart lungs?

Which provides the most direct source of energy for a hurricane? a. heating of the air by the sun b. warm ocean water c. friction with the ground d. rising, swirling winds

Freud believe that certain troubling symptoms could be traced to painful unconscious memories. This led him to suspect that these symptoms resulted from

Reducing the volume of a gasits pressure if the temperature of the gas and the number of particles are constant.

Salt deposits form on a car in the winter. Over time, the salt covers more of the car. Is the salt alive? a. Yes, salt deposits are alive because they maintain their structure. b. No, salt deposits are not alive because they do not reproduce. c.

Belinda recently completed a treatment program for breast cancer. For the last year, she took a drug treatment that worked to interfere with rapid cell division; what type of cancer treatment did Belinda undergo?

What do scientists call the theory that the universe will shrink in the future?