Answer:
Biological evidence of the age of the earth includes radioactive dating of rocks, fossil evidence, comparative anatomy and molecular clocks
Answer:
Membrane-bound organelles
Explanation:
Differential:
- Eukaryotic cells have membrane-bound organelles, while prokaryotic cells do not.
Similar:
- Both cells need nutrients, there are eukaryotic and prokaryotic organisms of algae.
- Both eukaryotic and prokaryotic cells have a plasma membrane.
- Both eukaryotic and prokaryotic cells desire nutrients.
Answer:
Rock formation is an isolated, scenic, or spectacular surfure rock outcrop. Rock formation usually is the result of weathering and erosion sculpting of an existing rock. The term rock formation can also refer as specific sedimentary strata or other rock unit in stratigraphic and pathologic studies.
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Answer:
b. False
Explanation:
These components are not sufficient to successfully perform a PCR reaction. Deoxynucleoside triphosphates (dATP, dGTP, dCTP, dTTP) are missing so that the PCR reaction can occur perfectly.
The PCR technique allows a specific fragment of the DNA molecule to be amplified thousands of times in just a few hours. This technique revolutionized research in molecular biology because it had taken a long time for DNA amplification. From PCR it is possible to obtain enough copies of a part of DNA to detect and analyze the sequence that is the target of the study.
For a PCR reaction to be performed a solution with some components must be prepared. These components are:
- Magnesium chloride buffer (to optimize reaction and act as a cofactor for polymerase)
- Forward and reverse primers (to customize the start of the enzyme reaction)
- DNA polymerase (Enzyme required for replication of desired DNA region.)
- DNA Template (the DNA to be copied)
- PCR-grade water
- Deoxynucleoside triphosphates: dATP, dGTP, dCTP, dTTP (act as bricks in the construction of DNA molecules).
