<u>Answer:</u>
The alternative complement pathway kill the invading microbial cell by enhancing the phagocytosis of microbes by host cells.
Option: (C)
<u>Explanation:</u>
-
The complement pathway is an immune system which destroys the microbes with protein complex and phagocytes.
- It has tree types namely 'classical, alternative and lectin pathway'.
-
In alternative complement pathway complex
protein complex kills the microbes in two ways,
- It attaches to the cell wall of the bacteria and kills by lysis
- Stimulates the formation of "Membrane Attack Complex(MAC)" which causes lysis of the bacteria.
Answer:
A
Explanation:
Reptiles arose about 310–320 million years ago during the Carboniferous period.
Answer:
True
Explanation:
Amino acids are coded from the DNA sequence in groups of three bases, that is, three bases (three letter codes) also called codon codes for (or specifies) an Amino acid.
in the above DNA sequence each of the prospective 6 Amino acids will each require a triplet of bases. Thus, the simple calculation of 6×3 yields 18. Thus we need at least 18 bases in our DNA sequence, barring stop codon, to code for Amino acids.
Counting, the above DNA sequence contains 18 bases exactly.
Theory of punctuated equilibrium may also know as punctuated equilibria, it was first presented in 1972 by Niles Eldredge and Stephen Jay Gould, the pattern describe is by the long duration of stability after the rupture patterns of evolutionary change.
