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TLS Online TPP Program

#Question id: 9229

Which of the following is a generally accurate statement about the current research regarding forest fragmentation?

#Unit 9. Diversity of Life Forms

  1. Fragmented forests promote biodiversity because they result in the combination of forestedge species and forest-interior species.

  2. In fragmented forests, the number of forested-adapted species tend to decline and the number of edge species tend to increase.

  3. Fragmented forests are the goal of conservation biologists who design wildlife reserves.

  4. The disturbance of timber extraction causes the species diversity to increase because of the new habitats created.

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TLS Online TPP Program

#Question id: 14923

#Unit 8. Inheritance Biology

Which of the following were key reasons for Mendel's success in elucidating his genetic laws?
TLS Online TPP Program

#Question id: 14924

#Unit 8. Inheritance Biology

Which is NOT a characteristic that made peas useful as a model system for Mendel's studies?
TLS Online TPP Program

#Question id: 14947

#Unit 6. System Physiology – Plant

 Nonenzymatic proteins whose exact functions are uncertain. Such proteins may be localized in the walls of specific cell types or more widespread
cell wall protein                                                                   Tissue localization
      A) HRGP (hydroxyproline rich glycoprotein)              i) Xylem, fibers, cortex, root hairs
      B) AGP (arabinogalactan protein) ii) Primary xylem and phloem
     C) PRP (proline-rich protein)                                          iii) Cambium, vascular parenchyma
     D) GRP (glycine-rich protein)                                  iv) Varied cell-specific expression
Which of the following combinations of nonenzymatic protein with its correct location?
TLS Online TPP Program

#Question id: 14948

#Unit 6. System Physiology – Plant

Cellulose microfibrils have an ordered structure and are synthesized at the plasma membrane, given characteristics of microfibrils;
a) Each microfibril is composed of an estimated 18 parallel chains of (1,4)-linked β-D-glucose chains tightly bonded to each other to form a crystalline microfibril
b) Microfibrils have hydrophilic surfaces, populated by polar –OH groups extending from the plane of the sugar rings
c) Microfibrils have hydrophobic surfaces, populated by nonpolar C–H groups populating the sides of stacked glucose chains
 d) microfibril important for enzymatic attack by microbial cellulases, which dock onto the hydrophobic surface and remove one glucan chain at a time
Which of the following from given characteristics of microfibrils is incorrect?
TLS Online TPP Program

#Question id: 14949

#Unit 6. System Physiology – Plant

How the matrix polysaccharides differ from the cellulose?
TLS Online TPP Program

#Question id: 14950

#Unit 6. System Physiology – Plant

NMR studies of the pectin molecules not indicate that,