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WorksheetsBio 1 Exam 1
Total questions: 50
Worksheet time: 25mins
Carbon, helium, oxygen, and nitrogen are the most common elements found in living things.
True
False
Lipids are always nonpolar
True
False
What is the smallest unit of life?
Organelle
Cell
Organ
Organism
What is true about all biological macromolecules?
They all contain carbon
They all contain oxygen
They are all hydrophobic
They are all hydrophillic
Which of these is NOT a part of cell theory?
Cells come from preexisting cells
Cells are the smallest unit of life
All living organisms are composed of one or more cells
Viruses are alive
All prokaryotic organisms are multicellular
True
False
What subatomic particle is negatively charged?
Magnetron
Electon
Proton
Neutron
Electrons contribute a negligible amount to an element's atomic weight.
True
False
What is an energy level describing?
The distance of an electron from the nucleus
If an atom is hydrophilic or hydrophobic
The number of electrons an atom is sharing with another electron
The distance between atoms
In its isolated state, elements are uncharged
True
False
Prokaryotes don't have DNA
True
False
How many electrons are in an orbital?
2
1
4
5
All energy levels can hold 4 orbitals
True
False
The total electrons an atom has are called its valence electrons.
True
False
If an atom gains an electron, it becomes more negatively charged.
True
False
What determines the identity of an atom?
Protons
Neutrons
Electrons
Antitron
Electronegativity describes how reactive an element is
True
False
What bond describes two atoms sharing electrons?
Covalent
Ionic
Hydrogen
Van der Waal
Which of these is the strongest?
Covalent bond
Hydrogen bond
Ionic bond
Platonic bond
Cohesion describes
A substance's attraction to itself
A substance's attraction to another substance
The strength of the bonds between elements in a substance
Hydrocarbons are generally nonpolar
True
False
Which of these does not have a linear structure?
Alkanes
Alkenes
Alkynes
Aromatics
Nitrogen has 5 valence electrons. How many atoms of hydrogen can nitrogen share electrons with?
5
3
8
4
CH3 is able to form hydrogen bonds with water
True
False
Which of these is nonpolar?
This is the basic structure of an amino acid. What is the highlighted part of the molecule?
Carboxyl
Amino
Carbonyl
Sulfhydryl
Glucose has a linear structure in solution and a ring structure out of solution.
True
False
A molecule sharing electrons unevenly is called a
Covalent bond
Ionic bond
Polar covalent bond
Hydrogen bond
How many monomers does an oligosaccharide have?
1
3-9
2
10+
The monomer of a protein is called a nucletic acid
True
False
What is the name of the reaction that builds polymers and produces water as a byproduct?
Hydrolysis
Dehydration reaction
Oxidative phosphorylation
Phosphodiester
Diets high in carbohydrates tend to create fat
True
False
A fatty acid linked to a glycerol is called a
Phosphodiester bond
Ester linkage
Micellic bond
Covalent bond
Which of these is considered "bad" cholesterol that carries lipids to organs?
HDL
LDL
FTL
FML
What is this?
Unsaturated cis fatty acid
Unsaturated trans fatty acid
Saturated fatty acid
Polyunsaturated fatty acid
What would you expect an monounsaturated trans fatty acid to be at room temperature?
Semisolid
Solid
Liquid
Gaseous
What is this?
A cell membrane
A micelle
A lysosome
A bunch of balloons hanging out
Which of these has the most complex structure?
Triglycerides
Monoglycerides
Phospholipids
Sterols
What does it mean for a molecule to be amphipathic?
It's polar
It's held together via ionic bonds
It's nonpolar
It's partially polar and partially nonpolar
What kind of bond holds together complementing nucleotides together in DNA?
Phosphodiester bonds
Hydrogen bonds
Glycosidic bonds
Van der Waal forces
What is the process where DNA is converted into mRNA?
Translation
Transubstantiation
Transcendentialism
Transcription
DNA and RNA share a sugar-phosphate backbone.
True
False
Which of these protein structural levels is categorized by hydrogen bonds between the amino acids and only one amino acid chain?
How many protons does chlorine have?
14
17
8
10
How many electrons are in carbon's outer energy level?
6
4
2
0
What would you expect the atomic weight of phosphorus (P) to be?
15
10
30
There's not enough information to determine this
A dehydration reaction breaks down polymers
True
False
Glucose is a hexose sugar and thus has 6 carbon molecules.
True
False
Which of the following has the same chemical formula as glucose?
Lactose
Fructose
Cellulose
Amalose
Galactose
What kind of nucleotide chain is pictured here?
DNA
RNA
Not able to determine
