Biology 115 Exam 1 Questions and
Answers 100% PASS
What does common descent mean - CORRECT ANSWER-In evolutionary
biology, a group of organisms share common descent if they have a common
ancestor
Define evolution - CORRECT ANSWER-Evolution is the change in the inherited
characteristics of biological populations over successive generations
What is an emergent property - CORRECT ANSWER-Cell ---> Tissue ---->
Organ ---> Organ System ---> Animal
What are the two domains of prokaryotic organisms? - CORRECT ANSWER-
Bacteria and archea
What is the significance of the 12 key intermediates in metabolism - CORRECT
ANSWER-the twelve key intermediate compounds are used to synthesize all of the
75-100 building blocks, coenzymes, and prosthetic groups in every organism on
the plane
, What six elements compose >98% of living matter - CORRECT ANSWER-
C,O,N,P,S,H
What is a buffer? What do buffers do? How do they do this? - CORRECT
ANSWER-A buffer is a molecule that tends to either bind or release hydrogen ions
in order to maintain a particular pH.
Name and draw four common functional groups - CORRECT ANSWER-Amino,
Carboxyl, carbonyl, hydroxyl
Amino - CORRECT ANSWER-H
/
R----N
/
H
Carboxyl - CORRECT ANSWER-O
//
R------C
/
OH
Carbonyl - CORRECT ANSWER-O
//
© 2026 Copyright. All Rights Reserved. This document is
protected by copyright law
Answers 100% PASS
What does common descent mean - CORRECT ANSWER-In evolutionary
biology, a group of organisms share common descent if they have a common
ancestor
Define evolution - CORRECT ANSWER-Evolution is the change in the inherited
characteristics of biological populations over successive generations
What is an emergent property - CORRECT ANSWER-Cell ---> Tissue ---->
Organ ---> Organ System ---> Animal
What are the two domains of prokaryotic organisms? - CORRECT ANSWER-
Bacteria and archea
What is the significance of the 12 key intermediates in metabolism - CORRECT
ANSWER-the twelve key intermediate compounds are used to synthesize all of the
75-100 building blocks, coenzymes, and prosthetic groups in every organism on
the plane
, What six elements compose >98% of living matter - CORRECT ANSWER-
C,O,N,P,S,H
What is a buffer? What do buffers do? How do they do this? - CORRECT
ANSWER-A buffer is a molecule that tends to either bind or release hydrogen ions
in order to maintain a particular pH.
Name and draw four common functional groups - CORRECT ANSWER-Amino,
Carboxyl, carbonyl, hydroxyl
Amino - CORRECT ANSWER-H
/
R----N
/
H
Carboxyl - CORRECT ANSWER-O
//
R------C
/
OH
Carbonyl - CORRECT ANSWER-O
//
© 2026 Copyright. All Rights Reserved. This document is
protected by copyright law
