Join thousands of students who trust us to help them ace their exams!Watch the first video
Multiple Choice
What is the primary function of protein kinases in cellular processes?
A
To phosphorylate other proteins, altering their activity
B
To synthesize proteins from amino acids
C
To degrade proteins into amino acids
D
To transport proteins across cell membranes
Verified step by step guidance
1
Understand the role of protein kinases: Protein kinases are enzymes that modify other proteins by chemically adding phosphate groups to them, a process known as phosphorylation.
Recognize the impact of phosphorylation: Phosphorylation can alter the activity, function, or location of a protein, and is a common mechanism for regulating cellular processes.
Differentiate from other functions: Protein synthesis involves ribosomes and mRNA, not protein kinases. Degradation of proteins into amino acids is carried out by proteases, not kinases.
Consider the role in signaling pathways: Protein kinases are crucial in cell signaling pathways, where they activate or deactivate proteins, thus influencing cellular responses.
Conclude the primary function: Based on the above understanding, the primary function of protein kinases is to phosphorylate other proteins, thereby altering their activity.