263215
HIV that causes AIDS, first starts destroying
1 leucocytes
2 helper T-cells
3 thrombocytes
4 B-lymphocytes
Explanation:
HIV that causes AIDS, first starts destroying helper T-cells. Thus, it affects the immune system.
NCERT 156
Human Health and Disease
263216
AIDS is diagnosed through which technique?
1 ELISA
2 PCR
3 PAGE
4 Electrophoresis
Explanation:
AIDS is diagnosed through ELISA (Enzyme Linked Immuno Sorbent Assay) technique.
Page 156
Human Health and Disease
263217
[HOTS, Page: 156] Refer to the given figure showing replication of retrovirus. How is it different from the replication of other viruses?
1 Viral DNA is produced from viral RNA by reverse transcriptase.
2 Viral RNA produces dsRNA by RNA polymerase.
3 Viral DNA is produced from viral RNA by DNA polymerase.
4 Viral DNA is produced from host DNA by DNA polymerase.
Explanation:
During replication, retrovirus produces DNA from its RNA with the help of enzyme reverse transcriptase.
NCERT
Human Health and Disease
263218
Match Column-I with Column-II and choose the correct option from the codes given below. Column-I |Column-II | (A) AIDS |(1) Retrovirus (B) HIV |(2) Enzyme (C) Reverse transcriptase |(3) Diagnostic technique (D) ELISA |(4) Syndrome Codes
1 A - 4 ; B - 1 ; C - 2 ; D - 3
2 A - 1 ; B - 2 ; C - 4 ; D - 3
3 A - 3 ; B - 4 ; C - 1 ; D - 2
4 A - 2 ; B - 3 ; C - 4 ; D - 1
Explanation:
AIDS – syndrome, HIV – Retrovirus, Reverse transcriptase – enzyme, ELISA – Diagnostic technique.
263215
HIV that causes AIDS, first starts destroying
1 leucocytes
2 helper T-cells
3 thrombocytes
4 B-lymphocytes
Explanation:
HIV that causes AIDS, first starts destroying helper T-cells. Thus, it affects the immune system.
NCERT 156
Human Health and Disease
263216
AIDS is diagnosed through which technique?
1 ELISA
2 PCR
3 PAGE
4 Electrophoresis
Explanation:
AIDS is diagnosed through ELISA (Enzyme Linked Immuno Sorbent Assay) technique.
Page 156
Human Health and Disease
263217
[HOTS, Page: 156] Refer to the given figure showing replication of retrovirus. How is it different from the replication of other viruses?
1 Viral DNA is produced from viral RNA by reverse transcriptase.
2 Viral RNA produces dsRNA by RNA polymerase.
3 Viral DNA is produced from viral RNA by DNA polymerase.
4 Viral DNA is produced from host DNA by DNA polymerase.
Explanation:
During replication, retrovirus produces DNA from its RNA with the help of enzyme reverse transcriptase.
NCERT
Human Health and Disease
263218
Match Column-I with Column-II and choose the correct option from the codes given below. Column-I |Column-II | (A) AIDS |(1) Retrovirus (B) HIV |(2) Enzyme (C) Reverse transcriptase |(3) Diagnostic technique (D) ELISA |(4) Syndrome Codes
1 A - 4 ; B - 1 ; C - 2 ; D - 3
2 A - 1 ; B - 2 ; C - 4 ; D - 3
3 A - 3 ; B - 4 ; C - 1 ; D - 2
4 A - 2 ; B - 3 ; C - 4 ; D - 1
Explanation:
AIDS – syndrome, HIV – Retrovirus, Reverse transcriptase – enzyme, ELISA – Diagnostic technique.
263215
HIV that causes AIDS, first starts destroying
1 leucocytes
2 helper T-cells
3 thrombocytes
4 B-lymphocytes
Explanation:
HIV that causes AIDS, first starts destroying helper T-cells. Thus, it affects the immune system.
NCERT 156
Human Health and Disease
263216
AIDS is diagnosed through which technique?
1 ELISA
2 PCR
3 PAGE
4 Electrophoresis
Explanation:
AIDS is diagnosed through ELISA (Enzyme Linked Immuno Sorbent Assay) technique.
Page 156
Human Health and Disease
263217
[HOTS, Page: 156] Refer to the given figure showing replication of retrovirus. How is it different from the replication of other viruses?
1 Viral DNA is produced from viral RNA by reverse transcriptase.
2 Viral RNA produces dsRNA by RNA polymerase.
3 Viral DNA is produced from viral RNA by DNA polymerase.
4 Viral DNA is produced from host DNA by DNA polymerase.
Explanation:
During replication, retrovirus produces DNA from its RNA with the help of enzyme reverse transcriptase.
NCERT
Human Health and Disease
263218
Match Column-I with Column-II and choose the correct option from the codes given below. Column-I |Column-II | (A) AIDS |(1) Retrovirus (B) HIV |(2) Enzyme (C) Reverse transcriptase |(3) Diagnostic technique (D) ELISA |(4) Syndrome Codes
1 A - 4 ; B - 1 ; C - 2 ; D - 3
2 A - 1 ; B - 2 ; C - 4 ; D - 3
3 A - 3 ; B - 4 ; C - 1 ; D - 2
4 A - 2 ; B - 3 ; C - 4 ; D - 1
Explanation:
AIDS – syndrome, HIV – Retrovirus, Reverse transcriptase – enzyme, ELISA – Diagnostic technique.
263215
HIV that causes AIDS, first starts destroying
1 leucocytes
2 helper T-cells
3 thrombocytes
4 B-lymphocytes
Explanation:
HIV that causes AIDS, first starts destroying helper T-cells. Thus, it affects the immune system.
NCERT 156
Human Health and Disease
263216
AIDS is diagnosed through which technique?
1 ELISA
2 PCR
3 PAGE
4 Electrophoresis
Explanation:
AIDS is diagnosed through ELISA (Enzyme Linked Immuno Sorbent Assay) technique.
Page 156
Human Health and Disease
263217
[HOTS, Page: 156] Refer to the given figure showing replication of retrovirus. How is it different from the replication of other viruses?
1 Viral DNA is produced from viral RNA by reverse transcriptase.
2 Viral RNA produces dsRNA by RNA polymerase.
3 Viral DNA is produced from viral RNA by DNA polymerase.
4 Viral DNA is produced from host DNA by DNA polymerase.
Explanation:
During replication, retrovirus produces DNA from its RNA with the help of enzyme reverse transcriptase.
NCERT
Human Health and Disease
263218
Match Column-I with Column-II and choose the correct option from the codes given below. Column-I |Column-II | (A) AIDS |(1) Retrovirus (B) HIV |(2) Enzyme (C) Reverse transcriptase |(3) Diagnostic technique (D) ELISA |(4) Syndrome Codes
1 A - 4 ; B - 1 ; C - 2 ; D - 3
2 A - 1 ; B - 2 ; C - 4 ; D - 3
3 A - 3 ; B - 4 ; C - 1 ; D - 2
4 A - 2 ; B - 3 ; C - 4 ; D - 1
Explanation:
AIDS – syndrome, HIV – Retrovirus, Reverse transcriptase – enzyme, ELISA – Diagnostic technique.
Refer to the given figure showing replication of retrovirus. How is it different from the replication of other viruses?
