PORTAGE LEARNING BIOD 171 EXAM
ANSWERS|LATEST !!!!2026|GRADED A+| (EXAM
T/F a virus is considered a mciroorganism - ANSWER false
T/F a virus is classified as a microbe - ANSWER true
T/F the smallest biological unit of life is the molecule - ANSWER false (cell)
T/F a defining characteristic of Protista is the inability of colonies to form tissue layers -
ANSWER true
T/F prokaryotic cells can be subdivided into bacteria and archaea - ANSWER true
T/F: the genetic material within a prokaryotic cell is contained within a membrane enclosed
region - ANSWER false
T/F eukaryotic cells do not have a nucleus - ANSWER false
T/F : archaea is noted for its ability to survive under harsh conditions - ANSWER true
T/F all multicellular microorganisms are classified as animalia are heterotrophic -
ANSWER true
1
, T/F all multicellular microorganisms are classified as animalia are autotrophic -
ANSWER false
T/F archaea, a eukaryotic class of microorganisms is capable of surviving harsh environments
- ANSWER false
T/F: Protista retain a unicellular classification, as they are unable to form tissue layers. -
ANSWER true
what is the smallest biological unit of life - ANSWER a cell
what are the four main types of macromolecules found in cells - ANSWER proteins,
lipids, nucleic acids, carbohydrates
how many different types of amino acids are available from which to make proteins -
ANSWER 20
proteins are formed from various combinations of ______ of which there are ______ known
forms - ANSWER amino acids; 20
how many amino acids are classified are being essential amino acids - ANSWER 9
the plasma membrane (select all):
A. restricts movement of materials in and out of the cell
B. is often a triple layer comprised of lipids
C. prevents essential nutrients from escaping
D. contains hydrophobic tails pointing outwards - ANSWER A. restricts movement of
materials in and out of the cell
C. prevents essential nutrients from escaping
2
ANSWERS|LATEST !!!!2026|GRADED A+| (EXAM
T/F a virus is considered a mciroorganism - ANSWER false
T/F a virus is classified as a microbe - ANSWER true
T/F the smallest biological unit of life is the molecule - ANSWER false (cell)
T/F a defining characteristic of Protista is the inability of colonies to form tissue layers -
ANSWER true
T/F prokaryotic cells can be subdivided into bacteria and archaea - ANSWER true
T/F: the genetic material within a prokaryotic cell is contained within a membrane enclosed
region - ANSWER false
T/F eukaryotic cells do not have a nucleus - ANSWER false
T/F : archaea is noted for its ability to survive under harsh conditions - ANSWER true
T/F all multicellular microorganisms are classified as animalia are heterotrophic -
ANSWER true
1
, T/F all multicellular microorganisms are classified as animalia are autotrophic -
ANSWER false
T/F archaea, a eukaryotic class of microorganisms is capable of surviving harsh environments
- ANSWER false
T/F: Protista retain a unicellular classification, as they are unable to form tissue layers. -
ANSWER true
what is the smallest biological unit of life - ANSWER a cell
what are the four main types of macromolecules found in cells - ANSWER proteins,
lipids, nucleic acids, carbohydrates
how many different types of amino acids are available from which to make proteins -
ANSWER 20
proteins are formed from various combinations of ______ of which there are ______ known
forms - ANSWER amino acids; 20
how many amino acids are classified are being essential amino acids - ANSWER 9
the plasma membrane (select all):
A. restricts movement of materials in and out of the cell
B. is often a triple layer comprised of lipids
C. prevents essential nutrients from escaping
D. contains hydrophobic tails pointing outwards - ANSWER A. restricts movement of
materials in and out of the cell
C. prevents essential nutrients from escaping
2
