Adisulfide bridge is an example of which type of bond? select one: a. hydrophobic interaction between r groups b. covalent bond between r groups c. ionic bond between r groups d. hydrogen bond between r groups

b. Covalent bond between R groups

Explanation:

Disulfide bridge also known as disulfide bond or dicysteine bond is a type of interaction in which two cysteines of proteins come in close proximity with each other and form covalent bond with their functional (R) groups. The purpose of this bond is to stabilize the tertiary structure of a protein and make it more compact.

Please see the attached image for more understanding.

the answer would be b

explanation:

sheep is a herbivore animal whereas grasshopper belongs to the class chordates but both of them feed on greens.  

if grasshopper and sheep feeding on a pasture land, i do not think both of them will have any impact on each other. however, the number of the species can make difference. since sheep feed on greens, there is a possibility there left no pasture land for the grasshoppers or they may get extinct.