Bio 411 Exam 1 Questions with Correct Answers 100% Verified| Guaranteed Success
What are the four major types of biomolecules? Nucleic acids, proteins, polysaccharides,
lipids
How are lipids different from the other 3 types of molecules? They are hydrophobic,
share a property rather than a structure
List the biological functions of nucleic acids. Encode genetic information
energy exchange ATP & GTP
metabolic regulation
catalytic (some)
List the biological functions of proteins. "workhorses" of the cell
structure
movement
catalysis
antibodies
List the biological functions of carbohydrates. Energy cycle in the biosphere
structural: cellulose in woody plants, exoskeletons in insects
molecular recognition
List the biological functions of lipids. Structural- membranes
energy storage & insulation- fats
Vitamins- A, D, E, K
steroid hormones and eicosanoids
, Describe the Scientific Method. A system where observations lead to a hypothesis which
then leads to an experiement yielding results that either support or don't support the
hypothesis, which in return leads to a different or modified hypothesis
Define hypothesis. a tentative explanation of observations
What are the possible outcomes of an experiment (relative to the hyposthesis)?
Supported and results are consistent after many trials, it is considered a theory.
Disproven- the hypothesis must be rejected and a new one constructed
What are the four characteristics of life? Complexity
Change and respond to environment
Reproduction
Evolution
What characteristics do the living and nonliving world share? Both are made of chemical
elements
Both obey the laws of chemistry and physics
What is thermodynamics? The study of energy and its transformations
State the first law of thermodynamics. Energy cant be created or destroyed, it changes
form, total energy in the universe is constant, living organisms are energy transformers
State the second law of thermodynamics. The degree of disorder in the universe tends to
increase
Entropy- the amount of disorder
Define atomic mass and atomic number. Atomic mass- number of P and N
What are the four major types of biomolecules? Nucleic acids, proteins, polysaccharides,
lipids
How are lipids different from the other 3 types of molecules? They are hydrophobic,
share a property rather than a structure
List the biological functions of nucleic acids. Encode genetic information
energy exchange ATP & GTP
metabolic regulation
catalytic (some)
List the biological functions of proteins. "workhorses" of the cell
structure
movement
catalysis
antibodies
List the biological functions of carbohydrates. Energy cycle in the biosphere
structural: cellulose in woody plants, exoskeletons in insects
molecular recognition
List the biological functions of lipids. Structural- membranes
energy storage & insulation- fats
Vitamins- A, D, E, K
steroid hormones and eicosanoids
, Describe the Scientific Method. A system where observations lead to a hypothesis which
then leads to an experiement yielding results that either support or don't support the
hypothesis, which in return leads to a different or modified hypothesis
Define hypothesis. a tentative explanation of observations
What are the possible outcomes of an experiment (relative to the hyposthesis)?
Supported and results are consistent after many trials, it is considered a theory.
Disproven- the hypothesis must be rejected and a new one constructed
What are the four characteristics of life? Complexity
Change and respond to environment
Reproduction
Evolution
What characteristics do the living and nonliving world share? Both are made of chemical
elements
Both obey the laws of chemistry and physics
What is thermodynamics? The study of energy and its transformations
State the first law of thermodynamics. Energy cant be created or destroyed, it changes
form, total energy in the universe is constant, living organisms are energy transformers
State the second law of thermodynamics. The degree of disorder in the universe tends to
increase
Entropy- the amount of disorder
Define atomic mass and atomic number. Atomic mass- number of P and N
