The four covalent bonds in methane (CH4) are arranged around carbon to give which one of the following geometries?

#Question id: 11419

#SCPH28 | Zoology

There are more species in tropical areas than in places more distant from the equator. This is probably a result of

a) more predators and parasites

b) more dispersed annual solar radiation compared to the poles

c) more frequent ecological disturbances over a longer time span

d) a longer time frame without disturbances for evolution and speciation

#Question id: 3613

#SCPH01 Biochemistry

When a single gene influences more than one trait it is called

#Question id: 923

#I Life Science/ Life Sciences Group – I-V

 The conversion of palmitoyl-CoA (16:0) to myristoyl-CoA (14:0) and 1 mol of acetyl-CoA by the B-oxidation pathway results in the net formation of:

#Question id: 7034

#SCPH01 Biochemistry

Gastrulation in the frog begins at a point on the embryo surface roughly 180° opposite the point of sperm entry with the formation of a dimple called the:

#Question id: 561

#I Life Science/ Life Sciences Group – I-V

Enzyme X exhibits maximum activity at pH = 6.9.  X shows a fairly sharp decrease in its activity when the pH goes much lower than 6.4.  One likely interpretation of this pH activity is that: