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WorksheetsIntro, Chemistry, Organic Molecules
Total questions: 20
Worksheet time: 8mins
A testable explanation for a question or problem is a(n)
hypothesis
theory
law
experiment
Science cannot answer certain faith-based questions because
scientists are not able to study human behavior.
faith-based beliefs are impossible to either prove or disprove
faith requires deductive reasoning.
there aren't enough variables.
Predicting the outcome of a specific event based on a general principle is what kind of reasoning?
deductive
abstract
reductive
inductive
How many neutrons does carbon have?
2
4
6
8
Which statement is an accurate description of water molecules?
They are ionically bonded.
They are slightly charged and polar.
They are uncharged and nonpolar.
They are charged and nonpolar.
How do buffers work?
They accept and release H+.
They accept and release OH-.
They convert H+ and OH- to water.
They soak up extra acid and base.
Which of the following reactions is an example of dehydration synthesis?
Glycogen → glucose subunits
Peptide → alanine + glycine
Glucose + galactose → lactose
Cellulose → glucose
The carbohydrate in DNA is
cellulose.
ribose
deoxyribose.
glucose.
Which of the following polysaccharides serves as a storage energy molecule in vertebrate animals?
glucose
chitin
cellulose
glycogen
What property of phospholipids makes them important in cell membranes?
They are part of DNA.
They are found only in animals.
They have a polar end and a nonpolar end.
They contain nucleic acids.
What maintains the secondary structure of a protein?
Peptide bonds
Disulfide bonds
Ionic bonds
hydrogen bonds
A nucleotide is made of a
phospholipid, sugar, and nitrogenous base.
phospholipid, sugar, and protein.
phosphate, sugar, and nitrogenous base.
phosphate, protein, and nitrogenous base.
Water molecules are cohesive because they
make up 60% to 90% of an organism's body weight.
form hydrogen bonds.
contain protons.
stick to other polar molecules.
Which of the following is NOT a fundamental characteristic of life?
ability to reproduce
ability to utilize energy derived from the external environment
ability to regulate the internal environment of the life form
ability to communicate with members of the same life form
The theme that reflects the idea that there has been gradual change in the characteristics of species over time is ?
Evolution
Energy
Reproduction
Translocation
Which elements make up the majority of living matter?
Carbon, oxygen, calcium, sulfur
Carbon, sodium, chlorine, magnesium
Carbon, phosphorus, hydrogen, sulfur
Carbon, hydrogen, nitrogen, oxygen
Atoms or molecules that have gained or lost electrons are called
Bases
Covalent bonds
Ions
Hydrogen bonds
When the acidic level of human blood increases, how is the proper balance of hydrogen ions (H+) restored?
Bicarbonate (HCO3-) accepts H+ ions and forms carbonic acid.
Carbonic acid eats up the extra OH- ions.
H+ ion-donor levels increase.
Bicarbonate (HCO3-) releases H+ ions that combine with excess OH- ions to form H2O.
Cholesterol, testosterone, and estrogen are examples of
nucleic acids.
proteins.
steroids.
fatty acids.
The specific function of a protein is determined by the
exact sequence of amino acids.
number of disulfide bonds.
hydrophilic head attached to the hydrophobic tail.
fatty acids that are joined together in the polypeptide.
