1) Even the simplest types of infectious agents must have DNA, RNA, and protein.
a) Not all infectious agents have DNA, RNA, and protein. Some viruses have RNA and protein
only, viroids have only protein, and prions are composed only of RNA.
b) Not all infectious agents have DNA, RNA, and protein. Some viruses have DNA and protein
only, viroids have only protein, and prions are composed only of DNA.
c) Not all infectious agents have DNA, RNA, and protein. Some viruses have RNA and protein
only, viroids have only DNA, and prions are composed only of protein.
d) Not all infectious agents have DNA, RNA, and protein. Some viruses have DNA and protein
only, viroids have only RNA, and prions are composed only of protein.
2) A large amount of the DNA in eukaryotic cells has no function and is called \"junk DNA\".
a) Although some DNA in cells has been called \"junk DNA\" and have no function, their
concentraition maintains constant to allow other DNA act normally.
b) Although some DNA in cells has been called \"junk DNA\", it may simply be that we do not
yet understand its function.
c) Although some DNA in cells has been called \"junk DNA\", they have well known function to
store energy in the cells.
d) Although some DNA in cells has been called \"junk DNA\", but this is due to their mutation
and they could mutate again to restore their functions.
Solution
1. Even the simplest types of infectious agents must have DNA, RNA, and protein.
ANSWER: The above statement is false. This must be corrected as:
Even the simplest types of infectious agents must have either DNA and protein coat , RNA only
or Protein Coat only.
So the answer is:
D. Not all infectious agents have DNA, RNA, and protein. Some viruses have DNA and protein
only, viroids have only RNA, and prions are composed only of protein.
2.
Junk DNA/Non Coding DNA
The DNA sequences that does not code for a protein, that usually occurs in repetitive sequences
of nucleotides, and does not seem to serve any useful purpose are called Junk DNA.
So the answer is:
B. Although some DNA in cells has been called \"junk DNA\", it may simply be that we do not
yet understand its function..
1) Even the simplest types of infectious agents must have DNA, RNA, .pdf
1. 1) Even the simplest types of infectious agents must have DNA, RNA, and protein.
a) Not all infectious agents have DNA, RNA, and protein. Some viruses have RNA and protein
only, viroids have only protein, and prions are composed only of RNA.
b) Not all infectious agents have DNA, RNA, and protein. Some viruses have DNA and protein
only, viroids have only protein, and prions are composed only of DNA.
c) Not all infectious agents have DNA, RNA, and protein. Some viruses have RNA and protein
only, viroids have only DNA, and prions are composed only of protein.
d) Not all infectious agents have DNA, RNA, and protein. Some viruses have DNA and protein
only, viroids have only RNA, and prions are composed only of protein.
2) A large amount of the DNA in eukaryotic cells has no function and is called "junk DNA".
a) Although some DNA in cells has been called "junk DNA" and have no function, their
concentraition maintains constant to allow other DNA act normally.
b) Although some DNA in cells has been called "junk DNA", it may simply be that we do not
yet understand its function.
c) Although some DNA in cells has been called "junk DNA", they have well known function to
store energy in the cells.
d) Although some DNA in cells has been called "junk DNA", but this is due to their mutation
and they could mutate again to restore their functions.
Solution
1. Even the simplest types of infectious agents must have DNA, RNA, and protein.
ANSWER: The above statement is false. This must be corrected as:
Even the simplest types of infectious agents must have either DNA and protein coat , RNA only
or Protein Coat only.
So the answer is:
D. Not all infectious agents have DNA, RNA, and protein. Some viruses have DNA and protein
only, viroids have only RNA, and prions are composed only of protein.
2.
Junk DNA/Non Coding DNA
The DNA sequences that does not code for a protein, that usually occurs in repetitive sequences
of nucleotides, and does not seem to serve any useful purpose are called Junk DNA.
So the answer is:
B. Although some DNA in cells has been called "junk DNA", it may simply be that we do not
yet understand its function.
