Biology Midterm 2011-2012 Question Preview (ID: 8189)


Review For Midterm; Covers Cells, Transport, And Intro To Organic Compounds. TEACHERS: click here for quick copy question ID numbers.

Which list describes the organization within multicellular organisms from least complex to most complex?
a) Organs, organelles, cells, organisms
b) Organism, organs, organelles, cells
c) Organelles, cells, organs, organism
d) Cells, organelles, organs, organisms

Which of these statements about enzymes is TRUE?
a) Enzymes are lipid molecules.
b) Enzymes are simple sugars.
c) Enzymes are specific for each biochemical reaction.
d) Enzymes are carbohydrate molecules.

The diffusion of water is also called...
a) Endocytosis
b) Osmosis
c) Active Transport
d) Photosynthesis

What element is present in all organic compounds?
a) Carbon
b) Nitrogen
c) Lead
d) Zinc

Which organic compound has a two to one ratio of hydrogen to oxygen?
a) Protein
b) Lipid
c) Enzyme
d) Carbohydrate

The cell membrane consists mainly of...
a) water and carbon dioxide
b) phospholipids and proteins
c) carbohydrates and sugars
d) oxygen and carbon dioxide

What compounds are joined in order to form proteins?
a) carbohydrates
b) lipids
c) amino acids
d) monosaccharides

Unlike carbohydrates and lipids, proteins contain what element?
a) Nitrogen
b) Oxygen
c) Carbon
d) Hydrogen

The exchange of oxygen and carbon dioxide between the body and the air occurs in the cells of your lungs. What part of the cell is the location of this exchange?
a) cell membrane
b) nucleus
c) ribosome
d) golgi body

Which best describes carbons ability to form covalent bonds in straight, branched, and ringed chains?
a) Carbon is inorganic.
b) Carbon has 6 valence electrons.
c) Carbon has 4 valence electrons.
d) Carbon is dissolvable.

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