#Question id: 11438
#Unit 1. Molecules and their Interaction Relevant to Biology
Two of the common amino acids are analyzed. At pH = 7.0, amino acid X is negatively charged while amino acid Y is positively charged. Which will be a characteristic of amino acid X?
#Question id: 11439
#Unit 1. Molecules and their Interaction Relevant to Biology
Arrange in increasing order of alkalinity
1. Pk1 arginine
2. pk2 proline
3. pk2 alanine
4. pkR arginine
#Question id: 11440
#Unit 1. Molecules and their Interaction Relevant to Biology
Arginine contains a guanidinium R-group and has pK1,pk2 pkR values of 2.17, 9.04, and 12.48 For arginine molecules at pH=14,
#Question id: 11441
#Unit 1. Molecules and their Interaction Relevant to Biology
Tyrosine contains a phenolic R-group and has pK1, pk2, pkR values of 2.20, 9.11, and 10.07 At which pH will all the tyrosine be in their fully protonated form?
#Question id: 11442
#Unit 10. Ecological Principles
Forests dominated primarily by evergreen trees with abundant lianas and epiphytes are found in which of the following biomes?
#Question id: 11443
#Unit 10. Ecological Principles
To qualify as a Biodiversity Hotspot, an area must
contain__:
A .At least 1,500 species of endemic vascular plants
B .At least 70 percent land covered by vascular plants
C .At least 25 threatened species of mammals
D .At least one protected area such as national park