Which of the following classes of chemical messengers is able to easily diffuse across the cell
membrane?
a. Steroids
b. Interleukins
c. Catecholamines
d. Histamines - ANS_a. Steroids
Which of these substances will best dissolve in water?
a. CH4
b. CCl4
c. HCI
d. N2 - ANS_c. HCI
Which of the following is improved when repeated trials of an experiment have consistent results?
a. Reliability
b. Validity
c. Independent variable
d. Dependent variable - ANS_a. Reliability
Which of the following is a chemical property, as opposed to a physical property, of water?
a. Ice is less dense than, and floats on, liquid water
, b. Water can be decomposed into hydrogen and oxygen gas
c. Water has a high surface tension due to hydrogen bonding
d. Bonds between water molecules can be broken by heating - ANS_b. Water can be decomposed into
hydrogen and oxygen gas
A student conducts an experiment in which they dissolve 1 g each of several substances in 50 mL water.
They have 12 identical plastic cups of water. They place 1g of salt in three cups, 1g of sugar in three
cups, and 1g of baking soda in three cups. Three cups contain only water. They place all the cups in a
freezer and record the temperature in each cup every 15 minutes for 4hr. Which of the following is the
best way for the student to display the temperature over time?
a. Pie chart
b. Bar graph
c. Venn diagram
d. Line graph - ANS_d. Line graph
Which of the following is a function of a somatic reflex?
a. It helps to produce an involuntary response in the absence of a stimulus.
b. It helps to produce a response quickly to protect the body from harm.
c. It helps to produce variable responses to the same sensory input.
d. It helps the individual to produce an appropriate voluntary response. - ANS_b. It helps to produce a
response quickly to protect the body from harm
Which of the following is an example of a long bone?
a. Vertebra
b. Sacrum
c. Ribs
d. Femur - ANS_d. Femur
membrane?
a. Steroids
b. Interleukins
c. Catecholamines
d. Histamines - ANS_a. Steroids
Which of these substances will best dissolve in water?
a. CH4
b. CCl4
c. HCI
d. N2 - ANS_c. HCI
Which of the following is improved when repeated trials of an experiment have consistent results?
a. Reliability
b. Validity
c. Independent variable
d. Dependent variable - ANS_a. Reliability
Which of the following is a chemical property, as opposed to a physical property, of water?
a. Ice is less dense than, and floats on, liquid water
, b. Water can be decomposed into hydrogen and oxygen gas
c. Water has a high surface tension due to hydrogen bonding
d. Bonds between water molecules can be broken by heating - ANS_b. Water can be decomposed into
hydrogen and oxygen gas
A student conducts an experiment in which they dissolve 1 g each of several substances in 50 mL water.
They have 12 identical plastic cups of water. They place 1g of salt in three cups, 1g of sugar in three
cups, and 1g of baking soda in three cups. Three cups contain only water. They place all the cups in a
freezer and record the temperature in each cup every 15 minutes for 4hr. Which of the following is the
best way for the student to display the temperature over time?
a. Pie chart
b. Bar graph
c. Venn diagram
d. Line graph - ANS_d. Line graph
Which of the following is a function of a somatic reflex?
a. It helps to produce an involuntary response in the absence of a stimulus.
b. It helps to produce a response quickly to protect the body from harm.
c. It helps to produce variable responses to the same sensory input.
d. It helps the individual to produce an appropriate voluntary response. - ANS_b. It helps to produce a
response quickly to protect the body from harm
Which of the following is an example of a long bone?
a. Vertebra
b. Sacrum
c. Ribs
d. Femur - ANS_d. Femur
