Evolution
Who is named the father of Evolution?
Charles Darwin
You find yourself standing next to a beautiful rose bush. Which of the following do you and the rose have in common?
A. You both are multicellular
B. You both lack a membrane-bound nucleus
C. You are both prokaryotic
D. You and the rose have nothing in common
A. You both are multicellular
From its atomic number of 15, it is possible to predict that the phosphorus atom has _____.
A. 5 neutrons, 5 protons, and 5 electrons
B. 15 neutrons and 15 protons
C. 8 electrons in its outermost electron shell
D. 15 protons and 15 electrons
D. 15 protons and 15 electrons
Which of these classes of biological molecules does not include polymers made of monomers?
A) lipids
B) carbohydrates
C) proteins
D) nucleic acids
A) lipids
Which of the following is correctly describing a covalent bond?
A. Two atoms of opposite charges
B. Sharing of electrons
C. Weak electrons due to polarized electron clouds
D. Weakest type of bond
B. Sharing of electrons
Define evolution (remember less is more)
Change over time
Descent with modification
Cell size is limited by _____.
A. the number of proteins within the plasma membrane
B. the surface area of mitochondria in the cytoplasm
C. surface to volume ratios
D. the size of the endomembrane system
C. surface to volume ratios
When a base is added to a buffer solution, the buffer will release ________ to stabilize the pH.
A. OH-
B. Cl-
C. H+
D. Na+
C. H+
A molecule with the chemical formula C6H12O6 is probably a(n) _____.
A. fatty acid
B. amino acid
C. nucleic acid
D. monosaccharide
D. monosaccharide
Cells require which of the following to form cilia or flagella?
A. tubulin
B. laminin
C. actin
D. intermediate filaments
A. tubulin
Which of the following is not a misconception about evolution?
A. Evolution is a theory about the origin of life
B. Evolution only occurs slowly and gradually
C. Humans are not currently evolving
D. Evolutionary change occurs over time through natural selection
D. Evolutionary change occurs over time through natural selection
Which structure is the site of the synthesis of proteins that may be exported from the cell?
A. rough ER
B. plasmodesmata
C. Golgi vesicles
D. free cytoplasmic ribosomes
A. rough ER
Which statement is false regarding valence electrons?
A. The chemical behavior of an element reflects how many of the eight positions are filled in the outermost energy level
B. Atoms avoid filling their outer energy levels completely
C. Elements possessing all eight electrons in their outer energy level are non-reactive
D. Elements on the periodic table with either one or seven valence electrons are highly reactive
B. Atoms avoid filling their outer energy levels completely
Which kind of bond forms between adenine and thymine in DNA?
A. Hydrogen
B. Covalent
C. Phosphodiester
D. Ionic
A. Hydrogen
The cytoskeleton includes all of the following except
A. microtubules
B. intermediate filaments
C. myosin filaments
D. actin filaments
C. myosin filaments
Which of the following is not an overarching theme of biology?
A. The molecular basis of inheritance explains the continuity of life
B. Individuals evolve to increase the diversity of a population
C. The relationship between structure and function underlies living systems
D. Evolutionary conservation explains unity of living systems
B. Individuals evolve to increase the diversity of a population
Which of the following is not true? Both chloroplasts and mitochondria _____.
A. have their own DNA
B. have multiple membranes
C. are part of the endomembrane system
D. are capable of reproducing themselves
C. are part of the endomembrane system
Which of the following best summarizes the relationship between dehydration reactions and hydrolysis?
A. Dehydration reactions assemble polymers; hydrolysis reactions break polymers apart
B. Dehydration reactions eliminate water from membranes; hydrolysis reactions add water to membranes
C. Dehydration reactions and hydrolysis reactions assemble polymers from monomers
D. Hydrolysis reactions create polymers and dehydration reactions create monomers
A. Dehydration reactions assemble polymers; hydrolysis reactions break polymers apart
Carboxyl groups are involved in the formation of
A. carbohydrates and triglycerides
B. proteins and nucleic acids
C. triglycerides and proteins
D. carbohydrates and nucleic acids
C. triglycerides and proteins
If a DNA sample were composed of 10% thymine, what would be the percentage of guanine?
A. 10
B. 40
C. 80
D. It is impossible to tell from the information given.
B. 40
Which of the following does Darwin’s theory of natural selection not require?
A. Genetic variation in a population
B. Low rate of population growth
C. The inheritance of trait from parent to offspring
D. Some organisms are better able to survive and reproduce.
B. Low rate of population growth
Plasmodesmata in plant cells are most similar in function to which of the following structures in animal cells?
A. desmosomes
B. gap junctions
C. extracellular matrix
D. tight junctions
B. gap junctions
Which of the following is a property of liquid water? Liquid water _____.
A. is less dense than ice
B. has a specific heat that is lower than that for most other substances
C. has a heat of vaporization that is higher than that for most other substances
D. is nonpolar
C. has a heat of vaporization that is higher than that for most other substances
A(n) ____ is to a nucleotide as a glycosidic linkage is to a sugar.
A. ester bond
B. peptide bond
C. hydrogen bond
D. phosphodiester bond
D. phosphodiester bond
Which of the following are found in eukaryotes but not in prokaryotes?
A. Ribosomes
B. Membrane-bound organelles
C. Genetic Material
D. Flagella
B. Membrane-bound organelles