Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 56992
TLS Online TPP Program

#Question id: 4981

An organism has a relatively large number of Hox genes in its genome. Which of the following is not true of this organism?

#Unit 11. Evolution and Behavior

  1. It evolved from evolutionary ancestors that had fewer Hox genes.

  2. It must have multiple paired appendages along the length of its body.

  3. It has the genetic potential to have a relatively complex anatomy.

  4. At least some of its Hox genes owe their existence to gene duplication events.

More Questions
TLS Online TPP Program

#Question id: 10476

#Unit 1. Molecules and their Interaction Relevant to Biology

Following statements are regarding to gangliosides.

A. They are ceramides with attached oligosaccharides that include at least one sialic acid residue.

B. They are ceramides with attached oligosaccharides that include at least one phasphatidic acid residue.

C. Sialic acid gives gangliosides the negative charge at pH 7 that distinguishes them from globosides.

D. Gangliosides are primarily components of cell-surface membranes and constitute a significant fraction (6%) of brain lipids.

Which of the following combination is correct?
TLS Online TPP Program

#Question id: 10354

#Unit 6. System Physiology – Plant

One of the enzyme that are involve in the ammonium assimilation is Asparagine synthetase (AS), some statements given below about AS such as,

a) This enzyme that catalyzes this reaction, is found in the cytosol of leaves and roots and in nitrogen-fixing nodules

b) High levels of light and carbohydrate inhibit the expression of genes coding for AS and the activity of the enzyme

c) Conditions of ample energy stimulate AS, thus they favor nitrogen assimilation into glutamine and glutamate

d) Energy-limited conditions inhibit GS and GOGAT, stimulate AS, and thus favor nitrogen assimilation into asparagine, a compound that is rich in nitrogen and sufficiently stable for long-distance transport or long term storage

Which of the following statements about AS is correct?
TLS Online TPP Program

#Question id: 118

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following best describes the cholesterol molecule?
TLS Online TPP Program

#Question id: 16142

#Unit 4. Cell Communication and Cell Signaling

Stem cells are defined by two capacities:
(1) the ability to regenerate or “self-renew” and
(2) the ability to differentiate into all diverse cell types. Embryonic stem cells have the capacity to generate every specialized cell type in an organism, in other words,
TLS Online TPP Program

#Question id: 15119

#Unit 8. Inheritance Biology

identify the pedigree shown below