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13 Cards in this Set

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During homeostatic responses, the body...

a. maximizes diffusion
b. minimizes osmosis
c. tries to minimize fluctuations of the internal environment
d. tries to maximize fluctuations of the internal environment
e. triest to minimize fluctuations of the external environment
c. tries to minimize fluctuations of the internal environment
In terms of the levels of biological organization, tissues consist of ______ and organisms are made up of _______.

a. cells, organs
b. electrons, organ systems
c. cells, organ systems
d. organ systems, atoms
e. cells, tissues
c. cells, organ systems
An increase in external temp. will trigger an increase inbody temp. This is an example of...

a. cells, organs
b. electrons, organ systems
c. cells, organ systems
d. organ systems, atoms
e. cells, tissues
e. this is trick q. body will decrease body temp.
4. Neon _____ form convalent bonds with other atoms because it's outermost electron shell _____.

a. will not, has vacant spaces
b. will not, has vacant spaces.
c. will, has too many electrons
d. will, is completely full
e. will not, is completely full
e. will not, is completely full
5. When placed in water, a NaCl molecule falls apart. This is because NaCl is...

a. held together by ionic bonds
b. held together by H-bonds
c. an amphipathic molecule
d. held together by convalent bonds
e. this is a trick question. NaCl will not fall apart in water.
a. held together by ionic bonds
6. In a water molecule, the electrons are ___ shared between hydrogen and oxygen. this allows water molecules to form __ with each other

a. evenly, polymers
b. unevenly, h-bonds
c. unevenly, ionic bonds
d. evenly, hbonds
e. unevenly, convalent bonds
b. unevenly, hbonds
Covalent bonds occur when atoms...

a.share electrons
b.have no vacancies in their outermost electron shells
. have lost electrons
d. have gained electrons
e. both c and d
a. share electrons
Carbon's outermost electron shell has four vacancies. this means that carbon...

a. has lost a few electrons
b. has gained a few electrons
c. wants to fill in four vacancies
d. both a and c
e. both b and c
c. wants to fill in these four vacancies
a solution has a very high ph. this means that

a. the solutions H is greater than OH
b. the solutions OH is greater than H
c. the solution is acidic
d. both a and c are true
e. both b and c are true
b. the solutions OH is greater than H
What are the four most abundant elements in the human body?

a. water and calcium phosphate
b. na, k, c, and cl
c. o, c, h, n
d. c, mg, na, and cl
e. o, c, na, and p
c. o, c, h, and n
Which is the following is an example of electrolyte?

a. an ion in solution.
b. a steroid in solution.
c. a phospholipid bilayer.
d. both a and b
e. both b and c
a. an ion in solution
When an atom loses two electrons from its outermost shell,

a. it becomes amphipathic
b. the atom has a 2- charge
c. the atom has a 2+ charge
d. it wants to form covalent bonds with other atoms
e. this is a trick question: atoms never lose electrons
c. the atom has a 2+ charge
Which of the following is true about sucrose?

a. it is a carb
b. it is made of amino acids
c. it is a disaccharide
d. both a and b
e. both a and c
e. both a and c