The mRNA bases would be g-u-a
Answer: Option C.
Activate trypsinogen.
Explanation:
Enterokinase is an enzyme produced by the dudoneum that specifically cleaves the acidic propeptide from trypsinogen and then activating it to produce active trypsin. It activate the trypsinogen because it need to produce trypsin which inturn activate other enzymes and initiates a cascade of proteolytic reactions that lead to the activation of many pancreatic zymogens which is important for the physiological action of pancreatic triglyceride lipase
Answer:
In gram-negative bacteria, the thin layer of peptidoglycan is surrounded by an outer membrane made of phospholipids, lipopolysaccharides, and proteins. This statement accurately describes specific bacterial cell walls.
Explanation:
The Gram- negative bacteria constitute of an outer membrane which is richly made up of lipopolysaccharides, phopholipids and proteins. The lipopolysaccharides function mainly as a virulence factor and are involved in causing variety of diseases in animals.
Gram- negative bacteria can be seperated from gram- positive bacteria mainly because of the thickness of peptidoglycan and by the presence of the outer membrane of Gram- negative bacteria. The outer membrane is absent in Gram- positive bacteria.
Answer:
Tropomyosin is pulled away from the myosin-binding site on actin.
Explanation:
Actin and myosin are contractile proteins present in muscle cells. They interact with each other to cause muscle contraction.
When calcium binds to troponin protein, confirmational changes occur in troponin. It pulls tropomyosin away from myosin binding sites on actin. The sites become free and cross bridge is formed between myosin and actin which leads to muscle contraction. The process continues until no more calcium and ATP is available after which tropomyosin again covers the binding sites on actin.