#Question id: 16121
#Unit 7. System Physiology – Animal
Match the following mechanisms (Column I) with their correct example (Column II).
Column I |
Column II |
A. Heat-generating and heat-retaining mechanisms |
i. increased metabolic rate (thyroid hormones, sympathetic nervous system) |
B. Heat-dissipating mechanisms |
ii. vasodilation of blood vessels of the skin
(decreased sympathetic tone) |
|
iii. increased activity of sympathetic cholinergic
fibers to sweat glands. |
|
iv. shivering |
|
v. vasoconstriction of blood vessels of the skin (increased
sympathetic tone) |
#Question id: 882
#Unit 1. Molecules and their Interaction Relevant to Biology
Choose correct statements about thermophilic proteins
I. The proteins found in thermophilic species are much more stable than their mesophilic counterparts.
II. All thermostable proteins have such a high incidence of salt bridges
III. the most important of which are an increased size of the protein’s hydrophobic core, an increased size of the interface between its domains and/or subunits, and a more tightly packed core as evidenced by a reduced surface-to-volume ratio.
IV. Several of these thermostable enzymes have a superabundance of salt bridges on their surfaces.
#Question id: 317
#Unit 1. Molecules and their Interaction Relevant to Biology
Hydrogen bonds can occur when hydrogen is covalently bonded to atoms like nitrogen and oxygen. What property of nitrogen and oxygen is important for this?
#Question id: 11936
#Unit 7. System Physiology – Animal
The first-order (primary afferent) cell bodies of the dorsal column–medial lemniscal system are found in which of the following structures?
#Question id: 23595
#General Aptitude