Test 1 Prep (Ch. 1, 2, & 3) Flashcards
Which of the following statements about animal cell lipids is false?
Many lipids function as enzymes.
A single water molecule (H—O—H) is held together by
two polar covalent bonds.
The teeth of grain-eating animals (such as horses) are usually broad and ridged. This makes the teeth suitable for grinding and chewing. Meat-eating animals (such as lions) have pointed teeth that are good for puncturing and ripping flesh. This illustrates
a result of natural selection as well as the connection between form and function.
Water’s surface tension and heat storage capacity are accounted for by its
hydrogen bonds.
In a water molecule, hydrogen and oxygen are held together by a ________ bond.
polar covalent
The role of a control in an experiment is to
provide a basis of comparison to the experimental group.
Which of the following statements regarding matter is false?
All matter exists in the form of compounds.
Which of the following would be correctly classified as a protein?
an enzyme
Which of the following is an amino group?
-NH2
Which statement about bacteria is true?
Bacteria are in a domain of their own.
You notice that over the past month, many students on campus have started wearing a new style of school sweatshirt. You think to yourself that perhaps the bookstore has recently started selling this new sweatshirt style. This is an example of a(n)
hypothesis.
Which of the following statements about hydrocarbons is false?
Hydrocarbons are inorganic compounds.
Glucose molecules are to starch as ________ are to proteins.
amino acids
Which of the following statements regarding nucleotides is false?
Nucleotides contain lipids.
Which of the following statements about dehydration reactions is false?
Animal digestive systems utilize this process to break down food.
In plants, the process of photosynthesis produces glucose (C6H12O6) and oxygen from carbon dioxide and water. Which of the following options about photosynthesis is consistent with this statement?
All of the carbon atoms in glucose came from carbon dioxide.
A diet high in animal products and hydrogenated vegetable margarine may increase the risk for heart disease. This is because
most animal fats are saturated and many hydrogenated vegetable margarines contain high levels of trans fats.
What is the fundamental difference between covalent and ionic bonding?
In a covalent bond, the partners share a pair of electrons; in an ionic bond, one partner accepts electrons from the other.
Which sequence is not a correct pathway of energy through an ecosystem?
bacteria → plants → birds
Which of the following statements about the monomers and polymers found in living organisms is false?
Monomers are joined together by the process of hydrolysis.
Which of the following is dependent on the ability of water molecules to form hydrogen bonds with other molecules besides water?
the universality of water as a solvent
The tree in your backyard is home to two cardinals, a colony of ants, a wasp’s nest, two squirrels, and millions of bacteria. Together, all of these organisms represent a(n)
community.
Which statement about evolution is true?
Evolution can result in adaptations.
Which of the following particles are found in the nucleus of an atom?
protons and neutrons