Why do living organism need energy

What is one way to that changes can occur in a DNA sequence

Which item listed is NOT produced in the process of cellular respiration? A. CO2 (carbon dioxide) B. C6H12O6 (glucose) C. H2O (water) D. Energy in the form of ATP

Is a bone fragment an example of physical contamination?

The resting cell normally has a net negative charge with respect to the outside of the cell. what is this state called?

Suppose a tropical storm hit your local coastal areas. Residents noticed a large amount of dead fish washed up on the beach following the storm. What physical factors of the aquatic ecosystem may have caused the fish die off?

Which of the following are atoms of the same element? Check all that apply. an atom with eight protons and seven electrons an atom with nine protons and seven electrons an atom with eight protons and eight electrons an atom with eight protons and no

What are the two reasons oxygen and carbon dioxide can move easily across the cell membrane?

Which component of blood is responsible for the formation of blood clots? a. all blood cells b. red blood cells c. myoglobin d. platelets e. white blood cells?

What will the majority of pathogens in food be killed by? a) antimicrobial secretions from the sebaceous glands in the skin b) mucus in the trachea c) acid in the stomach d) nose hairs

What can high levels of salt do to a plant