Which of the following characteristics are shared by all living organisms?
I.organization into cells
II.adaptation to environmental change
III.requirement for nutrients
IV.DNA housed in a nucleus
a. I and II
b. I and III
c. II and III
d. I, II, and III
e. I, II, III, and IV
E. I, II, III, and IV
On a very hot day in summer, you go outside and take your temperature, it is 37 degrees Celsius. On another day, this time a very cold day in winter, you go outside and take your temperature, again it is 37 degrees Celsius. This example illustrates
a. adaptation.
b. cellular reproduction.
c. respiration.
d. homeostasis.
e. digestion.
D. Homeostasis.
In the scientific name, Bacillus subtilis, Bacillus represents the name of the ____ while subtilus represents the name of the ____.
a. family; species.
b. family; genus.
c. genus; species.
d. species; genus.
e. genus; family.
C. Genus; species.
What is the right sequence of events applied in the scientific method?
a. question; hypothesis; observation; data; test; conclusion
b. observation; hypothesis; question; data; test; conclusion
c. observation; hypothesis; question; test; data; conclusion
d. observation; question; hypothesis; test; data; conclusion
D. observation; question; hypothesis; test; data; conclusion
All known species can be grouped into three domains. What are they?
Prokaryote
Eukaryote
Archaea
Which of these are characters of all living things: adaptation, homeostasis, requires energy and nutrients, reproduction, metamorphosis, growth(development, aging, change over time), metabolism, organize into a cell,
adaptation, homeostasis, requires energy and nutrients, reproduction, growth, metabolism, organize into a cell.
What are the two main ecosystem processes? Which one is one way flow and which one cycles?
Energy (one way flow) and Nutrients (Cycles).
Electrons are shared in which bonds (covalent, ionic, hydrogen, polar, non-polar)?
Covalent
What are the pH range of acidic, basic and neutral solutions?
pH acidic = less than 7 pH
pH basic = more than 7 pH
neutral solution = 7 pH
How do you tell which solution is a better buffer?
It consistently holds a pH of 7.
Which of the following is true about the metabolism of trans fatty acids?
a. we have evolved the enzymes to hydrolyze trans fatty acids
b. we have enzymes to hydrolyze cis fatty acids but not trans fatty acids
c. we can metabolize about half of the trans fatty acids we consume but no more than that
d. we cannot metabolize either cis or trans fatty acids
b. we have enzymes to hydrolyze cis fatty acids but not trans fatty acids
Hydrophobic molecules are ____ water.
a. attracted by
b. absorbed by
c. repelled by
d. mixed with
e. polarized by
C. repelled by
What category of compounds helps our body fluids to stay within a consistent pH range?
a. solvents
b. buffers
c. solutes
d. acids
e. bases
B. buffers.
Large polymers are formed from smaller sub-units by what type of reaction?
a. oxidation
b. reduction
c. condensation
d. hydrolysis
e. decarboxylation
C. condensation
Which of the following carbohydrates form highly branched chains of glucose monomers?
a. glycogen
b. cellulose
c. fructose
d. starch
e. sucrose
Glycogen
Which of the following is NOT a lipid?
a. steroids
b. triglycerides
c. oils
d. waxes
e. monosaccharides
monosaccharides
Unsaturated fatty acids
a. have fewer hydrogens than saturated fatty acids.
b. are more characteristic of animal fats than plant fats.
c. contribute to the possibility of arteriosclerosis.
d. have no double bonds.
e. are solid at room temperature.
A. have fewer hydrogens than saturated fatty acids.
Primary protein structure is dependent on
a. hydrophobic interactions.
b. hydrogen bonds between two amino acids.
c. covalent linkages between carbons and nitrogens of adjacent amino acids.
d. covalent linkages between carbons and oxygens of adjacent amino acids.
e. all of these.
E. all of these.
What kind of bond exists between two amino acids in a protein?
a. peptide
b. ionic
c. hydrogen
d. amino
e. sulfhydroxyl
A. peptide
Two amino acids are bonded together to form a dipeptide by what type of reaction?
a. condensation
b. oxidation reduction
c. hydrolysis
d. decomposition
e. acid-base
Condensation
Which of the following is NOT a part of the cell theory?
a. All organisms are cellular.
b. Cells are the structural and functional units of life.
c. All cells come from preexisting cells.
d. All cells are approximately the same size.
e. All cells have inheritable material.
D. All cells are approximately the same size.
Which of the following cell features is absent in a bacterial cell?
a. plasma membrane.
b. cytoplasm.
c. nucleoid.
d. nucleus.
e. DNA.
D. nucleus.
Elephants are large animals because they
a. have bigger cells.
b. possess expandable cells.
c. are made of a greater number of cells.
d. have bigger cells and are made of a greater number of cells.
e. have bigger cells that are expandable and of greater number.
C. are made of a greater number of cells.
Cells split a large molecule into smaller ones by this water-requiring reaction. An enzyme attaches a hydroxyl group and a hydrogen atom (both from water) at the cleavage site. What is this process called?
hydrolysis
What is a monomer of carbohydrates, protein, nucleic acid?
Monomer of carbohydrates are Simple Carbohydrates or monocarbohydrates (glucose)
Monomer of protein is amino acids.
Monomer of nucleic acid are nucleotides (uracil, cytosine, thymine, adenine, and guanine).