MOLECULAR CELL BIOLOGY CHAPTER 24
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◉Most living organisms have how many cells? Answer: Most are single
celled organisms
Others, such as ourselves, are multicellular organisms in which groups
of cells perform specialized functions and are linked by intricate systems
of communcation.
◉How many cells does a human body have? Answer: 10¹³
◉How are human cells generated? Answer: The whole is generated
from cell division
◉What is the "vehicle" for hereditary information for organisms?
Answer: The cell, which carries the hereditary information that defines
the species.
,And specified by this information, the cell includes machinery to gather
raw materials from the environment and to construct out of them a new
cell in its own image.
◉How long have living cells been evolving? Answer: 3.5 Billion years
◉Where do all living cell store their hereditary information? Answer: In
DNA.
◉What is DNA's Structure? Answer: Double stranded molecules - long
unbranched paired polymer chains, called strands, twisted into a double
helix made from the same four monomers - A, T, C and G - and they are
strung together in long linear sequences that encodes the genetic
information, just as the sequence of 1s and 0s encode the information of
a computer file.
◉Parts of a nucleotide? Answer: sugar (dioxyribose) with a phosphate
group attached to it, and a nitrogen-containing base, which may be either
adenine, guanine, cytosine or thymine.
Each strands are liked via sugar-phosphate group linkages, creating a
polymer chain composed of repitive sugar-phosphate backbone with a
series of bases protruding from it.
, ◉Concept: A single isolated strand, can be, in principle added in any
orgder, because each links in the same way. Answer: Basically, A will
always go to T, C always to G and the phosphates will always link to the
sugar, etc.
◉What are the bond between nucleotides on opposide strands? Answer:
Weak hydrogen bonds - This allows the two DNA strands to be pulled
apart without breakage of their backbones.
Each strand can then serve as a template for the stnthesis of a fresh DNA
strand complementary to itself - a fresh copy, that is, of hereditary
information.
◉The bonds between nucleotides on individual strands? Answer: Strong
covalent bonds
◉DNA Replication Answer: The process by which a copy of DNA ia
made
◉What are the rates of cell replication in cells? Answer: They are
different and depend on the type of cellWith different controls to start it
or stop it, and different auxiliary molecules to help it along.
FULL TEST BANK WITH ACTUAL QUESTIONS
AND CORRECT SOLUTIONS GUARANTEED
PASS
◉Most living organisms have how many cells? Answer: Most are single
celled organisms
Others, such as ourselves, are multicellular organisms in which groups
of cells perform specialized functions and are linked by intricate systems
of communcation.
◉How many cells does a human body have? Answer: 10¹³
◉How are human cells generated? Answer: The whole is generated
from cell division
◉What is the "vehicle" for hereditary information for organisms?
Answer: The cell, which carries the hereditary information that defines
the species.
,And specified by this information, the cell includes machinery to gather
raw materials from the environment and to construct out of them a new
cell in its own image.
◉How long have living cells been evolving? Answer: 3.5 Billion years
◉Where do all living cell store their hereditary information? Answer: In
DNA.
◉What is DNA's Structure? Answer: Double stranded molecules - long
unbranched paired polymer chains, called strands, twisted into a double
helix made from the same four monomers - A, T, C and G - and they are
strung together in long linear sequences that encodes the genetic
information, just as the sequence of 1s and 0s encode the information of
a computer file.
◉Parts of a nucleotide? Answer: sugar (dioxyribose) with a phosphate
group attached to it, and a nitrogen-containing base, which may be either
adenine, guanine, cytosine or thymine.
Each strands are liked via sugar-phosphate group linkages, creating a
polymer chain composed of repitive sugar-phosphate backbone with a
series of bases protruding from it.
, ◉Concept: A single isolated strand, can be, in principle added in any
orgder, because each links in the same way. Answer: Basically, A will
always go to T, C always to G and the phosphates will always link to the
sugar, etc.
◉What are the bond between nucleotides on opposide strands? Answer:
Weak hydrogen bonds - This allows the two DNA strands to be pulled
apart without breakage of their backbones.
Each strand can then serve as a template for the stnthesis of a fresh DNA
strand complementary to itself - a fresh copy, that is, of hereditary
information.
◉The bonds between nucleotides on individual strands? Answer: Strong
covalent bonds
◉DNA Replication Answer: The process by which a copy of DNA ia
made
◉What are the rates of cell replication in cells? Answer: They are
different and depend on the type of cellWith different controls to start it
or stop it, and different auxiliary molecules to help it along.
