NEW
Font size
S
M
L
XL
WorksheetsAP Bio Unit 1 Review
Total questions: 20
Worksheet time: 20mins
Name
Class
Date
1.
Once labor begins in childbirth, contractions increase in intensity and frequency until delivery. The increasing labor contractions of childbirth are an example of which type of regulation?
a)
A bioinformatic system
b)
Negative feedback
c)
Positive feedback
d)
Enzymatic catalysis
2.
A water sample from a hot thermal vent contained a single-celled organism that had a cell wall but lacked a nucleus. What is its most likely classification?
a)
Archaea
b)
Animalia
c)
Fungi
d)
Eukarya
3.
In a hypothetical world, every 50 years python snakes over 4 feet long are eliminated from the population before they reproduce. Based on your knowledge of natural selection, you would predict that the average length of the python population will...
a)
Gradually increase
b)
Remain unchanged
c)
Rapidly increase
d)
Gradually decline
4.
What are archaea?
a)
Bacteria-like organisms that can live only in extreme salt environments.
b)
Prokaryotes characterized as extremophiles that share some bacterial and some eukaryotic traits.
c)
Single-celled organisms that are killed by the application of antibiotics at certain concentrations.
d)
Primitive protist-like creatures possessing fewer than two chromosomes per cell.
5.
A controlled experiment is one in which...
a)
There are at least two groups, one of which does not receive the experimental treatment.
b)
The experiment proceeds at a slow pace to guarantee that the scientist can carefully observe all reactions and process all experimental data.
c)
There is one group for which the scientist controls all variables.
d)
There are at least two groups, one differing from the other by two or more variables.
6.
Which of the following is a correct sequence of levels in life's hierarchy, proceeding downward from an individual animal?
a)
Nervous system, brain, nervous tissue, nerve cell
b)
Organ system, nervous tissue, brain
c)
Brain, organ system, nerve cell, nervous tissue
d)
Organ system, tissue, molecule, cell
7.
One difference between carbon-12 and carbon-14 is that carbon-14 has...
a)
Two more neutrons than carbon–12
b)
Two more protons and two more neutrons than carbon–12.
c)
Two more electrons than carbon–12.
d)
Two more protons than carbon–12.
8.
A covalent bond is likely to be polar when...
a)
The two atoms sharing electrons are equally electronegative.
b)
One of the atoms sharing electrons is much more electronegative than the other atom.
c)
Ooxygen is one of the two atoms sharing electrons.
d)
One of the atoms has absorbed more energy than the other atom.
9.
How many electron pairs are shared between carbon atoms in a molecule that has the formula C2H4?
a)
4
b)
1
c)
0
d)
2
10.
Which of the following explains most specifically the attraction of water molecules to one another?
a)
Ionic bond
b)
Hydrogen bond
c)
Hydrophobic interaction
d)
Polar covalent bond
11.
Which drawing in the figure above depicts the electron configuration of an atom capable of forming three covalent bonds with other atoms?
a)
A
b)
B
c)
C
d)
D
12.
Which drawing in the figure above depicts an atom with a valence of 3?
a)
A
b)
B
c)
C
d)
D
13.
Which drawing in the figure above depicts an atom with a valence of 2?
a)
A
b)
B
c)
C
d)
D
14.
What results from the chemical reaction illustrated above?
a)
An anion with a net charge of +1
b)
A cation with a net charge of –1
c)
A cation with a net charge of +1 and an anion with a net charge of –1
d)
An anion with a net charge of –1
15.
Compared with 31P, the radioactive isotope 32P has...
a)
One more neutron
b)
One more proton
c)
A different atomic number
d)
One more electron
16.
The reactivity of an atom arises from...
a)
The potential energy of the valence shell.
b)
The existence of unpaired electrons in the valence shell.
c)
The sum of the potential energies of all the electron shells.
d)
The energy difference between the s and p orbitals.
17.
In a single molecule of water, two hydrogen atoms are bonded to a single oxygen atom by...
a)
Van der waals interactions
b)
Nonpolar covalent bonds
c)
Polar covalent bonds
d)
Hydrogen bonds
18.
Which of the following takes place as an ice cube cools a drink?
a)
Kinetic energy in the drink decreases.
b)
Molecular collisions in the drink increase.
c)
A calorie of heat energy is transferred from the ice to the water of the drink.
d)
Evaporation of the water in the drink increases.
19.
Which type of bond must be broken for water to vaporize?
a)
Ionic bonds
b)
Both hydrogen bonds and ionic bonds
c)
Polar covalent bonds
d)
Hydrogen bonds
20.
Which of the following solutions would require the greatest amount of base to be added to bring the solution to neutral pH?
a)
Black coffee at pH 5
b)
Household bleach at pH 12
c)
Gastric juice at pH 2
d)
Vinegar at pH 3
Reset
