Consider the following statements about ecosystem: 1. Producers are autotrophs. 2. Consumers are heterotrophs. 3. Decomposers recycle nutrients. Which of the above is/are correct? MCQ with Answer and Explanation

Explanation:
Gastrin, released by G cells in the stomach antrum, stimulates parietal cells to secrete HCl. Secretin stimulates bicarbonate, CCK stimulates enzyme secretion and gallbladder contraction, GIP inhibits gastric secretion.

Explanation:
The Wobble hypothesis, proposed by Francis Crick, explains the degeneracy of the genetic code. It states that the base pairing rules (A-U, G-C) are strictly followed for the first two bases of the mRNA codon, but the third base of the codon (the 3' end) can form non-standard or 'wobble' base pairs with the first base of the tRNA anticodon (the 5' end). This allows a single tRNA molecule to recognize and bind to more than one synonymous codon.

Explanation:
A joint (articulation) is where two or more bones meet, allowing varying degrees of movement. Tendons connect muscle to bone, ligaments bone to bone, cartilage cushions. Joints are classified as fibrous, cartilaginous, or synovial.