Answer:
C. Primers are short sequences that allow the initiation of DNA synthesis.
Answer:
Blood-brain barrier.
Explanation:
Blood brain barrier may be defined as the barrier between the blood capillaries and the component of the brain tissue. This blood brain barrier provide protection against the pathogens present in the blood.
The blood-brain barrier uses tight junctions that prevent the entry of microbes in the underlying tissue. The tight junctions allows only the entry of some selected particles and prevent the entry of other particles.
Thus, the correct option is (3).
The skier would have both potential and kinetic energy. There is kinetic energy because the skier is moving, and potential energy because the skier is on a hill.
Answer:
Jellyfish, corals, sea anemones and comb jellies.
Explanation:
Animals in which the cells are arranged in two embryonic layers—external ectoderm and internal endoderm—are called diploblastic animals.
