Campbell Biology Chapters 1-3 Reviews
We can be sure that a mole of table sugar and a mole of vitamin C are equal in their...
number of molecules
Compared with 31P, the radioactive isotope 32P has...
one more neutron
A controlled experiment is one that...
tests experimental and control groups in parallel
In the term trace element, the adjective trace means that...
the element is required in very small amounts
The reactivity of an atom arises from...
the existence of unpaired electrons in the valence shell
Which of the following best demonstrates the unity among all organisms?
the structure and function of DNA
Systems biology is mainly an attempt to...
understand the behavior of entire biological systems by studying interactions among its component parts
Which of the following is a hydrophobic material? paper table salt wax sugar
C - wax
What is the hydroxide ion concentration of the lake described in question 3?
10^-10 M
Measurements show that the pH of a particular lake is 4.0. What is the hydrogen ion concentration of the lake?
10^-4 M
A slice of pizza has 500 kcal. If we could burn the pizza and use all the heat to warm a 50-L container of cold water, what would be the approximate increase in the temperature of the water? (Note: A liter of cold water weighs about 1 kg.) 1) 50°C 2) 5°C 3) 10°C 4) 100°C 5) 1°C
4/D - 100 degrees C
What is the correct order of the biological hierarchy?
Biosphere, Ecosystems, Communities, Populations, Organisms, Organs and Organ Systems, Tissues, Cells, Organelles, Molecules;
What coefficients must be placed in the following blanks so that all atoms are accounted for in the products? C6H12O6 → _____ C2H6O + _____ CO2 a. 3; 1 b. 2; 2 c. 1; 3 d. 1; 2 e. 1; 1
B - 2;2
We can represent atoms by listing the number of protons, neutrons, and electrons-for example, 2p +, 2n 0, 2e - for helium. Which of the following represents the isotope of oxygen? a. 9p +, 9n 0, 9e - b. 7p +, 2n 0, 9e - c. 10p +, 8n 0, 9e - d. 6p +, 8n 0, 6e - e. 8p +, 10n 0, 8e -
E - 8p +, 10n, 8e-
The atomic number of sulfur is 16. Sulfur combines with hydrogen by covalent bonding to form a compound, hydrogen sulfide. Based on the number of valence electrons in a sulfur atom, predict the molecular formula of the compound.
H2S
Which of the following statements best distinguishes hypotheses from theories in science?
Hypotheses usually are relatively narrow in scope, theories have broad explanatory power
Which of the following best describes the logic of scientific inquiry?
If my hypothesis is correct, I can expect certain test results.
What is the correct sequence of levels in life's hierarchy, proceeding downward from an individual animal?
Nervous system, brain, nervous tissue, nerve cell
Which of the following is NOT an observation or inference on which Darwin's theory of natural selection is based?
Poorly adapted individuals never produce offspring
Which statement is true of all atoms that are anions?
The atom has more electrons than protons
Which of the following is an example of qualitative data?
The fish swam in a zigzag motion. (observation data)
Which of the following statements correctly describes any chemical reaction that has reached equilibrium?
The rates of the forward and reverse reactions are equal.
All organisms on your campus make up...
a community
Protists and bacteria are grouped into different domains because...
protists have a membrane bound nucleus
