In the human body, the 'Medulla oblongata' is a vital part of the brainstem that controls involuntary functions such as: MCQ with Answer and Explanation

Explanation:
Secondary structure refers to local folding patterns like α-helices and β-sheets. Primary is amino acid sequence; tertiary is 3D folding; disulfide bonds are tertiary/quaternary; denaturation disrupts non-covalent bonds, not peptide bonds.

Explanation:
All chordates possess a notochord, a dorsal hollow nerve cord, pharyngeal slits, and a post-anal tail at some stage of development. The notochord may be replaced by the vertebral column in vertebrates. Gills and scales are not universal (e.g., mammals lack both). The notochord provides skeletal support and is the defining feature of the phylum Chordata.

Explanation:
Bacteria are prokaryotes that primarily reproduce asexually through binary fission, a process where a single cell divides into two identical daughter cells. Fungi reproduce both sexually and asexually, but asexual reproduction commonly occurs through the formation and dispersal of spores (like conidia or sporangiospores). Viruses are obligate intracellular parasites; they lack the metabolic machinery for independent reproduction and must hijack a host cell's machinery to replicate. Thus, statements 1 and 2 are correct.