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WorksheetsIntro Unit & Unit 1 (Section 1) Review- Final Exam Prep
Total questions: 20
Worksheet time: 10mins
What is biology?
the study of rocks
the study of life
the study of earth
the study of stars
Which of these characteristics are shared by all living things (please select all that apply)?
they are made up of one or more cells
the breath oxygen
they make their own chemical energy
they respond to stimuli
How does biodiversity vary across the biosphere?
there is more biodiversity near the poles
there is less biodiversity near the equator
there is more biodiversity near the equator
biodiversity does not vary
What is homeostasis?
an organism's ability to maintain a constant internal condition
an organism's ability to change temperatures
an organism's ability to move around
an organism's ability to adapt
What composes the structure of an atom?
proteins, carbohydrates, & lipids
protons, neutrons, & electrons
prions, neurons, & elements
none of the above
What elements are common to all life on Earth?
hydrogen, nitrogen, phosphorus, gold, silver, & oxygen
hydrogen, nitrogen, titanium, lithium, oxygen, & sulfur
hydrogen, carbon, nitrogen, phosphorus, sulfur, & oxygen
hydrogen, carbon, nitrogen, gold, silver, & lithium
What is the difference between an element and a compound?
an element is composed of multiple types of atoms bonded together
a compound is composed of multiple types of atoms bonded together
both statements are true
both statements are false
What gives water molecules their unique chemical properties?
covalent bonds
ionic bonds
hydrogen bonds
all of the above
What is the difference between a polar molecule and a nonpolar molecule?
a nonpolar molecule has a partial charge
a nonpolar molecule does not share electrons evenly
a polar molecule has a partial charge
a polar molecule shares electrons evenly
What is an acid?
a substance that releases hydrogen ions when dissolved in water
a substance that absorbs hydrogen ions when dissolved in water
a substance that has a high pH
none of the above
What is a base?
a substance that releases hydrogen ions when dissolved in water
a substance that absorbs hydrogen ions when dissolved in water
a substance that has a low pH
none of the above
How many bonds can carbon form with other atoms (a property of carbon that makes it very unique)?
five
ten
four
two
What are the four carbon-based molecules (biomolecules)?
proteins, carbohydrates, lipids, & nucleic acids
proteins, carbohydrates, lipids, & amino acids
amino acids, carbohydrates, fatty acids, & water
amino acids, carbohydrates, lipids, & water
Which biomolecule is the primary component of the cell membrane?
carbohydrate
lipid
protein
nucleic acid
Which biomolecule is the first to be broken down as a source of energy for a cell?
protein
lipid
carbohydrate
nucleic acid
Which biomolecule is made up of long chains of amino acids linked together by peptide bonds?
protein
lipid
nucleic acid
carbohydrate
DNA and RNA are examples of which type of biomolecule?
lipid
protein
carbohydrate
nucleic acid
What is one primary difference between an exothermic reaction and an endothermic reaction?
exothermic absorbs more energy than it releases
endothermic absorbs more energy than it releases
exothermic creates energy
endothermic creates energy
What is the function of an enzyme?
decreases the rate of a chemical reaction by lowering the activation energy of that reaction
increases the rate of a chemical reaction by lowering the activation energy of that reaction
increases the rate of a chemical reaction by being broken down during the reaction
decreases the rate of a chemical reaction by being broken down during the reaction
What can prevent an enzyme from performing its function (please check all that apply)?
a change in temperature
a change in pH
damage to the structure of the enzyme
optimal conditions
