Answer:
These are called <em>producers</em><em>.</em>
Explanation:
They perform photosynthesis using light energy from the sun.
The myelin sheath that covers many cns axons is formed by oligodendrocytes.
Oligodendrocytes are type of neuroglia (non-neural cells found in central nervous system) with protective, trophic and supportive role. Their function is to insulate axons (with myelin sheath), in the central nervous system (CNS) which is, equivalent to the function performed by Schwann cells in the peripheral nervous system (PNS).
Both are exchange of gases in plants ! some differences are ....
1) respiration takes place all the time while photosynthesis happens only in the presence
of sunlight !
2) in respiration O2 is used but in photosynthesis CO2 is used !
3) starch breaks to give energy in respiration but in photosynthesis starch is formed !
Answer: Hydrogen bonds are created between the base pairs in DNA. Adenine pairs with thymine and cytosine pairs with guanine. Adenine and thymine create 2 hydrogen bonds while cytosine and guanine create 3. These bonds are fairly weak so that they can be broken when DNA is replicated (by an enzyme called helicase which unwinds DNA). However despite them being weak they do stabilize DNA's double helix structure as well.
Answer:
An active transport requires energy, a passive transport does not.
That's all! Hope that helps :)
