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Twelfth Grade (Grade 12) Biology Questions

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Grade 12 Zoology
Which of the following is an example of a macrofauna?
  1. marine amoeba
  2. pathogenic viroid
  3. crab megalope
  4. saltwater paramecium
Grade 12 Macromolecules
Which of these describes a substrate?
  1. part of the enzyme that substrate molecules fit into
  2. molecule that the enzyme works on
  3. what the enzyme helps produce from the reaction
Grade 12 Skin, Skeleton, and Muscles
Which is included in the integumentary system?
  1. hair
  2. nails
  3. skin
  4. all of the above
Grade 12 Biomes
What is the place where freshwater and saltwater mix in the ocean biome?
  1. chaparral
  2. estuary
  3. coastal runoff
  4. benthic community
Grade 12 DNA, RNA, and Genetics
Alleles for the A and B blood cell antigens are codominant. The condition where no antigens are present on the blood cells (type O blood) is a recessive trait. Which set of parents will most likely produce a child with type O blood?
  1. one parent with type AB blood, and the other parent with type A blood
  2. one parent with type AB blood and the other parent with type O blood
  3. one parent with heterozygous type A blood, and the other parent with type O blood
  4. one parent with homozygous type A blood, and the other parent with homozygous type B blood
Grade 12 Circulatory and Immune Systems
Where do the veins and arteries come together?
  1. capillaries
  2. heart
  3. ventricles
  4. aorta
Grade 12 Macromolecules
A polysaccharide that can be made in some animal cells is
  1. starch.
  2. pectin.
  3. glycogen.
  4. cellulose.
Grade 12 Macromolecules
Which type of biomolecule does not form polymers?
  1. lipids
  2. proteins
  3. carbohydrates
  4. nucleic acids
Grade 12 Anatomical Organization
Which order of the level of organization of life is correct?
  1. molecule, cell, organism, macromolecule, organelle, tissue, organ
  2. organ, tissue, organism, molecule, cell, organ system
  3. atom, molecule, macromolecule, organelle, cell, tissue
  4. cell, organ, tissue, organism, molecule, atom
Grade 12 Nervous and Endocrine Systems
The main general purpose of negative feedback is to
  1. control all body system tissues.
  2. maintain homeostasis.
  3. keep the body's sugar high.
  4. regulate excretion.
Grade 12 Macromolecules
What speeds up chemical reactions?
  1. enzymes
  2. pH
  3. biochemical reactions
  4. activation energy
Grade 12 Human Reproduction
Which structure becomes the backbone before birth?
  1. nerve cord
  2. gill slits
  3. spinal chord
  4. notochord
Grade 12 Macromolecules
Which molecule is most likely an enzyme?
  1. maltose
  2. sucrose
  3. lipase
  4. taurine
Grade 12 Cell Structure and Function
The rough endoplasmic reticulum has                 located on it.
  1. lysosomes
  2. cytosol
  3. ribosomes
  4. proteins
Grade 12 Nervous and Endocrine Systems
The sympathetic nervous system is responsible for
  1. the "fight or flight" response.
  2. control of organs while at rest.
  3. motor control.
  4. intelligent thought.
  5. vision.
Grade 12 Biomes
Hermit crabs, periwinkle snails, and many macroalgae inhabit which area of the ocean biome?
  1. deep ocean
  2. intertidal zone
  3. open ocean
  4. black zone
Grade 12 Skin, Skeleton, and Muscles
Which serves to support, protect, and bind together other tissues of the body?
  1. cells
  2. connective tissue
  3. tissue
Grade 12 Cell Structure and Function
These molecules form the lipid bilayer which surrounds each cell.
  1. triglycerides
  2. carbohydrates
  3. phospholipids
  4. steroids
Grade 12 Biochemical Pathways
Which statement is a true distinction between cellular respiration and fermentation?
  1. NADH is oxidized by the electron transport chain in cellular respiration only.
  2. Fermentation is an example of an endergonic reaction, while cellular respiration is an exergonic reaction.
  3. Substrate-level phosphorylation is unique to fermentation only.
  4. Fermentation is the metabolic pathway of prokaryotes, whereas cellular respiration is used only by eukaryotes.
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