Telescopes are used to detect light waves emitted from distant space objects. And the Hubble Space Telescope is one of the most famous optical telescopes in orbit.
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Answer:
q1 : ribosomes because they are responsible for protein synthesis
q2 : by transporting potassium ions into the cell and sodium ions out of the cell maintaining a concentration gradient
q3 : seawater contains a high concentration of sodium and chlorine ions that the Atlantic cod gets rid of by actively transporting them out of its body
Answer:
The correct answer is B) DNA has 30% thymine and 20% cytosine.
Explanation:
We use the Chargaff Law, where:
A + G = C + T (sum of pure bases A and G, is equal to pyrimidines C and T) and, A = T, C = G.
A + G = 30% + 20% =50% = C+ T
Thus:
A = 30% = T
G = 20% = C
Patient A is suffering from anemia, due to underproduction of hemoglobin
Explanation:
Patient A’s blood cell count:
Hemoglobin: 5g/dL
RBC: 4.6 x 106 cells/ml
WBC: 15,000 cells/ml
Platelets: 250,000
Results inferred from the count: Low hemoglobin, low normal RBC, high WBC, normal platelets count
Hemophilia is an inherited blood clotting disorder, where due to excessive bleeding, blood hemoglobin, RBC, and platelets can go lower. The low hemoglobin is due excessive loss of blood and not due to underproduction of hemoglobin. Moreover, patient A’s platelet count is normal. Hence, hemophilia can be ruled out.
Since the hemoglobin and RBC count is low, it clearly indicates low production of these blood cell components, leading to anemia. However, the increase in WBC leads can be due any other underlying medical conditions like infections, hemolytic anemia, leukemia etc.