CA II

Blue Heeler puppies that have been raised in isolation from members of their species will still show herding tendencies for farm animals characteristic of this breed. This suggests that the behavior is

• a disadvantage

• learned

• acquired

• inherited

What is a common adaptation that many desert-dwelling animals have?

• big ears to help dissipate body heat and regulate temperature

• a thick layer of blubber to keep warm at night

• counter-shading to be camouflaged from above and below

• long claws or sticky toes to help climb trees

Aa is

• homozygous (purebred)
• heterozygous (hybrid)

English natural scientist who formulated a theory of evolution by natural selection (1809-1882).

• Darwin
• Wallace
• Linnaeus
• Lamarck

Darwin wrote that organisms with traits that are best suited to the environment will ________________

• increase in number
  
• become extinct
  

All living things are made up of.......

• cells

• cell tissues

• organs

• organ systems

The drawing shows the structure of what molecule?

• A DNA molecule
• A lipid molecule
• A carbohydrate molecule
• A protein molecule

The lungs belong to

• The respiratory system

• The excretory system

• The nervous system

• The digestive system

Responds to sensory information by transmitting signals to and from different parts of the body.

• lymphatic system

• endocrine system

• cardiovascular system

• nervous system

During respiration, cells make

• water

• oxygen

• carbon dioxide

• ATP

• glucose