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Solving time: 3 mins

Which statement is not true about prokaryotes?

A
DNA is completed with histones

B
Well-developed nucleus is absent

C
Mesosome is present

D
Mitochondria is absent

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In prokaryotic cells, the genetic material is not organised into nucleus and all the membrane bound organelles are absent. The histone proteins are absent and therefore, the genetic material is not organised into chromatin.
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Question 3
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3. A new blood type antigen was just discovered. After examining the blood, scientists discovered that the erythrocytes in this blood exhibit previously unknown antigens. They call these antigens "Antigen C." A patient with blood Type C needs a transfusion. Assume that Type C produces antibodies following the same principles as existing ABO blood types. Also assume existing ABO blood types will react to C antigens the same way they react to existing ABO antigens (i.e., following the same principles). a. Which of the following blood types could this patient receive? Why? Include a discussion of which antibodies and antigens are present. (3.5 pts) - Type O: This patient can receive blood from Type O because Type O blood does not have A or B antigens on its erythrocytes. Since the patient has Type C blood, which is a previously unknown antigen, there will be no reaction between the C antigen and the A or B antibodies present in Type O blood. - Type A: This patient can receive blood from Type A because Type A blood has A antigens on its erythrocytes. The patient's Type C blood will not react with the A antigens, and the patient's antibodies will not attack the A antigens present in Type A blood. - Type B: This patient can receive blood from Type B because Type B blood has B antigens on its erythrocytes. The patient's Type C blood will not react with the B antigens, and the patient's antibodies will not attack the B antigens present in Type B blood. - Type AB: This patient can receive blood from Type AB because Type AB blood has both A and B antigens on its erythrocytes. The patient's Type C blood will not react with the A or B antigens, and the patient's antibodies will not attack the A or B antigens present in Type AB blood. - Type C: This patient can receive blood from another individual with Type C blood because they both have the same antigen on their erythrocytes. There will be no reaction between the C antigens in their blood. In summary, this patient can receive blood from Type O, Type A, Type B, Type AB, and Type C individuals. The patient's Type C blood will not react with the antigens present in these blood types, and the patient's antibodies will not attack the antigens present in these blood types.
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Question Text
Which statement is not true about prokaryotes?
Updated OnAug 7, 2022
TopicCell: The Unit of Life
SubjectBiology
ClassClass 11
Answer TypeText solution:1 Video solution: 1
Upvotes189
Avg. Video Duration2 min