Which, if any, of the following statements is false? -triyambak.org

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TLS Online TPP Program

#Question id: 2702

Which, if any, of the following statements is false?

#Unit 2. Cellular Organization

Unlike DNA, RNAs are unmethylated, and only the four standard bases – A, C, G and U are found in RNAs.
The primary structure of an RNA is the linear sequence of nucleotides.
The secondary structure of an RNA is dominated by hydrogen bonding between bases on the same strand.
Stem-loop structures are common in RNA and consist of complementary sequences that form stable base pairs, separated by a short sequence of unpaired bases.

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TLS Online TPP Program

#Question id: 1375

#Unit 4. Cell Communication and Cell Signaling

Four ECM ubiquitous protein components, each of which comprises multiple, distinct, repeating domains, are found in basal laminae. Given below are a list of some extracellular matrix (ECM) proteins in column A and their characteristics in column B.

Column A	Column B
a. Type IV collagen	i. a large multidomain proteoglycan that binds to and cross-links many ECM components and cell-surface molecules.
b. Laminins	ii. a rodlike molecule that cross-links type IV collagen, perlecan, and laminin, which helps incorporate other components into the ECM and also stabilizes basal laminae.
c. Perlecan	iii. a family of multi-adhesive, cross-shaped proteins that form a fibrous two-dimensional network with type IV collagen and that also bind to integrins and other adhesion receptors.
d. Nidogen	iv. trimeric molecules with both rodlike and globular domains that form a two-dimensional network.