Living Environment 1

To maintain homeostasis, organisms carry out the same basic life functions: nutrition, excretion, transport, respiration, growth, synthesis, regulation, and synthesis. What is the term for the sum of all life processes in an organism?

• Metabolism

• Digestion

• Photosynthesis

• Homeostasis

Failure to maintain homeostasis causes ______ and death.

• disease

• growth

• digestion

• reproduction

Autotrophs make their own food, while ______ eat other organisms.

• heterotrophs

• autotrophs

• producers

• decomposers

Photosynthesis is carried out by which of the following?

• Animals

• Plants, algae, and blue-green bacteria

• Fungi

• Viruses

Plants have ______, small holes in their leaves that let them exchange the gasses used in photosynthesis.

• stomates

• chloroplasts

• roots

• xylem

Guard cells open and close the ______.

• stomates

• roots

• xylem

• cuticle

Aerobic respiration requires oxygen and yields more ATP (energy) for a molecule of sugar than ______ (no oxygen) respiration.

• anaerobic

• photosynthetic

• aerobic

• fermentative

When humans are forced to get energy from anaerobic respiration, we produce ______ acid that damages muscles ("the burn" you feel during exercise).

• lactic

• citric

• acetic

• sulfuric

Photosynthesis and Aerobic Respiration are opposite reactions.

• True

• False