Answer:
Option (d).
Explanation:
DNA is the genetic material of all the organism except some viruses. DNA is composed of nitrogenous base, deoxyribose pentose sugar and the phosphate group.
DNA replicatese by semi-conservative mode of replication in which one the daughter DNA consists of one newly synthesized strand and one parental strand. This mode of replication was explained by Messelson and Sthal experiment. The cells from 15N medium are transferred to 14N medium the band of intermediate density was observed. The daughter DNA consists of one 15N DNA strand and one 14N DNA strnd. This strand undergo replication in the 14N medium. This time one low density DNA band ( contains 14N - 14N DNA strand) and one intermediate density band ( 14N-15N DNA).
Thus, the correct answer is option (d).
Answer:
water because it has webbed feet
Explanation:
The answer is B because when hydrogen is separated from O2 it soluble
Carbon dioxide and water are converted into glucose and oxygen
Answer:
These are the following answers to the items:
Pinocytosis -cell engulfs molecules in cell "drinking"
Facilitated diffusion- molecules helped by protein; move insoluble molecules
across plasma membrane
Passive diffusion- molecules move in and out freely from high to low concentration
Phagocytosis- cell engulfs microorganisms in cell "eating"
Active transport- molecules "pumped" in or out from low to high concentration
Passive diffusion- oxygen, carbon dioxide
Active transport- transports sodium, potassium
Pinocytosis- transports glucose, amino acids
Explanation:
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