Vertebrates have a back bone. They have living endoskeleton, pharnyx and efficient respiration, advanced nervous system, and paried limbs.
Answer:
Protein is the important biomolecule that acts as building block of the protein. Proteins are inserted into the biological membrane and consists of transmembrane and integral membrane proteins.
The alpha helices and beta sheets are present in the bio membrane. The organism living at low temperature has high alpha helices and low beta sheets because alpha helices has high mobility, less rigidity and makes enzyme active at low temperature.
Nervous system
Circulatory system
Cardiovascular system
Answer:
(x-9)(x-3)
Explanation:
find out what adds to -12 and also multiplies to get 27
-9 times -3 equals 27 and -9 plus +3 equals -12
