Answer:
Explanation:
Metamorphic rocks are those which have been changed from one form to another by the high pressure and temperature environment of the Earth. "Metamorphism" means the process of changing form.
Phyllite is a type of foliated metamorphic rock.
Slate is a, fine-grained, clayey metamorphic rock.
Shale is a parent rock to slate and phyllite.
Here is one source for a simple graph. (Copy and paste into browser)
http://hyperphysics.phy-astr.gsu.edu/hbase/Geophys/metamo.html
The correct answer is option B. Of the following choices given, carbon dioxide is produced during both anaerobic and aerobic respiration. It is the common thing between the two respiration. Anaerobic respiration is the process which do not need oxygen to produce products while the opposite is called aerobic respiration.
Answer:
c. ¼ heavy, ¾ light
Explanation:
DNA replication follows semi conservative model which means that both the strands separate during replication and the newly formed DNA molecule has one old and one new strand. If instead of semi conservative, conservative mechanism is used, old strands will not separate from each other and the two newly synthesised DNA strands will come together to form a DNA molecule.
Here the cells were first grown in heavy 15N medium so all the DNA molecules had 15N and thus were heavy. Then the cells were transferred to 14N medium where only lighter 14N were available for replication process.
In first generation, 14N DNA molecules were synthesised from 15N DNA molecules so 1/2 DNA molecules were 15N and other half were 14N. In the second generation, 14N molecules will give rise to new 14N molecules and 15N molecules will also give rise to 14N molecules hence 1/4 molecules will be 15N (heavy) and 3/4 will be 14N (light).
