And Answers | 100% Verified | Solved
In an oxidation-reduction reaction, the reactant that loses electrons is said to have been
CORRECT ANSWERS oxidized
The structural unit of nucleic acids is the _____________? CORRECT ANSWERS
nucleotide
Atoms with 1 or 2 valence shell electrons (e.g. Na and K) are _______________.
CORRECT ANSWERS electropositive
Which of the following is not considered a factor influencing rates of chemical reactions?
CORRECT ANSWERS gravity
Which of the following is true of energy flow in chemical reactions? CORRECT
ANSWERS The products of endergonic reactions contain more potential energy than
the reactants.
A control mechanism in which the output of the system shuts off the effect of the original
stimulus is a : CORRECT ANSWERS negative feedback system
Isotopes of the same element have the same: CORRECT ANSWERS number of
protons but different numbers of neutrons.
Which of the following is true of hydrogen bonds. CORRECT ANSWERS H bonds can
also form intramolecular bonds.
Select the statement that is correct regarding chemical bonds. CORRECT ANSWERS
Covalent bonds involve the sharing of electrons forming a chemical bond.
Glucose, sucrose and glycogen are all three examples of: CORRECT ANSWERS
carbohydrates
The study of large body structures visible to the naked eye is called ________ anatomy.
CORRECT ANSWERS gross
Cholesterol is an example of a: CORRECT ANSWERS steroid
Which of the following would not be a necessary life function? CORRECT ANSWERS
water
Which of the following is a neutralization reaction? CORRECT ANSWERS HCl + NaOH
→ NaCl + H2O
, One of the necessary life functions is responsiveness or irritability. This refers to:
CORRECT ANSWERS sensing changes in the environment and then reacting or
responding to them.
A solution that has a pH of 3 is described as being: CORRECT ANSWERS acidic.
Which of the following statements is correct of homeostatic imbalance? CORRECT
ANSWERS It is considered the cause of most disease.
Buffers are systems that : CORRECT ANSWERS bind protons when the pH drops and
release protons when the pH rises.
The coiling of the primary structure of a protein into an alpha helix or beta pleated sheet
is referred to as: CORRECT ANSWERS secondary structure.
Fibrous proteins: CORRECT ANSWERS are also called structural proteins.
Which of the following is not an important characteristic of water? CORRECT
ANSWERS Buffering pH
A structure that is composed of two or more tissue types that work together to perform
specific functions for the body is a ________. CORRECT ANSWERS organ
The four elements that make up about 96% of body mass are: CORRECT ANSWERS
carbon, oxygen, hydrogen, nitrogen.
Which of the following is an organic molecule? CORRECT ANSWERS C6H12O6
The ability to maintain a relatively stable internal environment is called_________?
CORRECT ANSWERS homeostasis
Place the following in correct sequence from simplest to most complex:
1. molecules
2. organ
3. atoms
4. tissues
5. cells CORRECT ANSWERS 3-1-5-4-2
Which of the following is true regarding the concentration of solutions? CORRECT
ANSWERS Molarity is the number of moles of solute per liter of solution.
The organ system that is composed of glands that secrete hormones that regulate body
functions is the___________? CORRECT ANSWERS endocrine system