TLS Online TPP Program

#Id: 7914

#XL - Q Biochemistry

Matrix-targeting sequences

Located at the N-terminus

Usually 20–50 amino acids in length

Rich in hydrophobic amino acids, positively charged basic amino acids (arginine & lysine), and hydroxylated ones (serine and threonine)

Amphipathicity of matrix-targeting sequences is critical to their function

TLS Online TPP Program

#Id: 10759

#XL - R Botany

Parts of flowers

Sepals collectively form the calyx, 

The calyx may be gamosepalous  (sepals united) or polysepalous (sepals free)

TLS Online TPP Program

#Id: 8935

#XL - T Zoology

TLS Online TPP Program

#Id: 10067

#XL - T Zoology

Ca2+ ions bind to sites near each hinge and prevent it

from flexing, so that the whole string of cadherin domains behaves as a rigid and slightly curved rod to generate cell–cell adhesion

TLS Online TPP Program

#Id: 10684

#XL - R Botany

Dicot stem anomalous secondary growth occurs due to following reasons:

Intraxylary phloem

Absence of vessels in the xylem

Scattered vascular bundles in dicot stem

Presence of medullary bundles

Presence of cortical bundles

Secondary growth in monocot

e.g., Dracaena