SCMH 1010 Exam 4 Auburn University | UPDATED Questions with
100% Verified Answers
Question:
Who first observed cell structures in plants
Answer:
Robert Hooke
Question:
When were cell structures first observed in plants?
Answer:
1663
Question:
What scientists observed many cellular structures, including
single-celled organisms?
Answer:
Anton Van Leeuwenhoek
Question:
When did Anton Van Leeuwenhoek observe these cellular
structures?
Answer:
Late 1600s
Question:
Who proposed in 1838 that all plants were made of cells?
Answer:
Mathias Schleiden
Question:
Who extended Mathias's idea in 1839?
Answer:
,Theodor Schwann
Question:
Theodor's Cell Theory
Answer:
1. All living things are composed of cells
2. The cell is the fundamental unit of life (building blocks of life)
3. All cells arise from previous cells (cellular reproduction)
Question:
What are the characteristics cells must exhibit as living things?
Answer:
They must gain energy, grow, respond to external stimuli, and reproduce
Question:
Cell Membranes
Answer:
acts as a partition both to protect a cell from its enviornment and to divide the inner
structure of the cell into different parts
Question:
What is the external membrane of a cell composed of?
Answer:
a double layer of elongated molecules interspersed with molecular structures called
receptors
Question:
Receptors
Answer:
They bond to certain molecules through hydrogen bonding, which is specified by the
geometric shape of the molecule and the receptor
Question:
What happens after receptors go through hydrogen bonding?
, Answer:
They are able to move into the body through the membrane
Question:
What happens to the membrane once a receptor goes
through it?
Answer:
part of it snips off and forms a protective packet around the molecule
Question:
Vesicle
Answer:
The protective packet is made of the cell membrane that surrounds the molecule
Question:
(T/F) Cell membranes are water-permeable, so water can
move freely across them into and out of the cell
Answer:
True
Question:
(T/F) Receptors are the only mechanism by which material
moves into cells
Answer:
False
Question:
(T/F) Ions associated with the nervous system are also able to
move across the cell membrane without the use of receptors
Answer:
True
Question:
What do plant cells also have besides a cell membrane?
100% Verified Answers
Question:
Who first observed cell structures in plants
Answer:
Robert Hooke
Question:
When were cell structures first observed in plants?
Answer:
1663
Question:
What scientists observed many cellular structures, including
single-celled organisms?
Answer:
Anton Van Leeuwenhoek
Question:
When did Anton Van Leeuwenhoek observe these cellular
structures?
Answer:
Late 1600s
Question:
Who proposed in 1838 that all plants were made of cells?
Answer:
Mathias Schleiden
Question:
Who extended Mathias's idea in 1839?
Answer:
,Theodor Schwann
Question:
Theodor's Cell Theory
Answer:
1. All living things are composed of cells
2. The cell is the fundamental unit of life (building blocks of life)
3. All cells arise from previous cells (cellular reproduction)
Question:
What are the characteristics cells must exhibit as living things?
Answer:
They must gain energy, grow, respond to external stimuli, and reproduce
Question:
Cell Membranes
Answer:
acts as a partition both to protect a cell from its enviornment and to divide the inner
structure of the cell into different parts
Question:
What is the external membrane of a cell composed of?
Answer:
a double layer of elongated molecules interspersed with molecular structures called
receptors
Question:
Receptors
Answer:
They bond to certain molecules through hydrogen bonding, which is specified by the
geometric shape of the molecule and the receptor
Question:
What happens after receptors go through hydrogen bonding?
, Answer:
They are able to move into the body through the membrane
Question:
What happens to the membrane once a receptor goes
through it?
Answer:
part of it snips off and forms a protective packet around the molecule
Question:
Vesicle
Answer:
The protective packet is made of the cell membrane that surrounds the molecule
Question:
(T/F) Cell membranes are water-permeable, so water can
move freely across them into and out of the cell
Answer:
True
Question:
(T/F) Receptors are the only mechanism by which material
moves into cells
Answer:
False
Question:
(T/F) Ions associated with the nervous system are also able to
move across the cell membrane without the use of receptors
Answer:
True
Question:
What do plant cells also have besides a cell membrane?
