The active site is complementary to its substrate due to its specific 3D structure. The substrate fits in to one specific active site so an enzyme will only bind to one substrate. They are SPECIFIC. Lock and key theory.
<span>A person must inherit two copies of a defective CF gene -- one copy from each parent -- to have the disease. People who inherit only one copy are considered CF carriers and do not have the disease, but they can pass their copy of the defective gene on to their children.</span>
Answer:
Parietal cells in the gastric glands in the stomach.
Explanation:
The main constituent of gastric acid is hydrochloric acid produced and that is roduced by parietal cells in the gastric glands in the stomach.
<span>Cyanobacteria, which are blue-green algae, belong to the eubacterial class. Prokaryotes can be autotrophs or heterotrophs. Autotrophs like blue-green algae can make their own food, </span>
Answer:
The statements in options A,B,C,D and E are correct:
A. Deuterstomia, Protostomia and Ecdysozoa are clades of bilaterians.
B. Invertebrates do not posses a back bone.
C. Lophotrochozoans posses a flexible exoskeleton for protection from harmful environments.
D. Studies show that sponges do not consist in a group with a common ancestry hence all animals except sponges share a common ancestor.
E. Lophotrochozoans posses three germ layer: the endoderm mesoderm and ectoderm, are bilaterally symmetrical and are invertebrates.
