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None Respiration, Digestion, and Excretion
What is the system responsible for taking in oxygen and removing carbon dioxide from the body?
  1. circulatory
  2. respiratory
  3. excretory
  4. digestive
None Macromolecules
Protein molecules are polymers of                     .
  1. DNA molecules
  2. fatty acid molecules
  3. amino acid molecules
  4. none of the above
None Macromolecules
Which of the following is NOT a lipid?
  1. fats
  2. proteins
  3. steroids
  4. phospholipids
None Skin, Skeleton, and Muscles
Which part of the skeleton protects the lungs?
  1. The femur
  2. The rib cage
  3. The skull
None Nervous and Endocrine Systems
The portion of the brain that is involved in muscle coordination is the                  .
  1. cerebellum
  2. cerebrum
  3. medulla oblongata
None Macromolecules
Which of these lists shows the relative size of macromolecules, from largest to smallest?
  1. water, sucrose, glucose, protein
  2. protein, water, glucose, sucrose
  3. water, protein, sucrose, glucose
  4. protein, sucrose, glucose, water
None Circulatory and Immune Systems
The upper chamber of the heart is the                .
  1. septum
  2. atrium
  3. ventricle
None Microbiology
Prokaryotes are unlike all other organisms in that their cells                    
  1. lack nuclei.
  2. have organelles.
  3. have cell walls.
  4. lack nucleic acids.
None Protists and Fungi
The thin filaments produced by water molds are known as                .
  1. oogonia.
  2. antheridia.
  3. zoosporangia.
  4. hyphae.
None Skin, Skeleton, and Muscles
The tissue that connects two bones in a joint is the                .
  1. cartilage
  2. ligament
  3. muscle
None Respiration, Digestion, and Excretion
Which system creates pee?
  1. Endocrine System
  2. Skeletal System
  3. Digestive System
  4. Urinary System
None Circulatory and Immune Systems
White blood cells are used to fight disease and are a part of these organ systems.
  1. Immune and Lymphatic
  2. Skeletal and Muscular
  3. Nervous and Circulatory
  4. Digestive and Skeletal
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