Characteristics of Life

A reaction to a stimulus is a ______________.

• hiccup
• response
• metabolism
• homeostasis

Your body shivers when you are cold. This is because of the concept of...

• homeostasis
• heredity
• energy metabolism
• cellular organization

Which of the following is a response?

• a flashlight shined into the eye

• a rubber band popping your hand

• your pupils constricting when exposed to bright light

• blood glucose levels drop significantly

The combination of chemical reactions through

which an organism builds up or breaks down

materials as it carries out its life processes is called ...

• absorption

• metabolism

• digestion

• consumption

Every organism must pass on its ________________, stored in DNA.

• metabolism
• response
• growth
• genetic code

Which of the following is NOT an example of an adaptation?

• birds migrating during the winter months

• the total sum of all the chemical reactions in your body

• humans evolving the ability to digest lactose (sugar in milk)

• the ability of dolphins to communicate in aquatic environments

Provides usable energy for other life functions

• growth
• cellular respiration
• digestion
• excretion

Pick the true statement about cellular organization:

• cells working together make tissues
• cells working together make organs
• tissues working together make organ systems
• organs working together make cells

When a baby kitten becomes an adult cat, this is an example of...

• energy metabolism
• growth and development
• response to stimuli
• having cells

Living things are based on a universal genetic

code. What molecule is responsible for that code?

• RNA

• Lipid

• Protein

• DNA