Question

proteins are organic compounds that play vital roles in living organisms. a single cell can contain thousands of proteins, each with a unique function. although protein structure and function vary greatly, all proteins have similar building blocks.
characteristics of proteins
role examples function
structure keratin, collagen build different structures in skin and hair
transport hemoglobin carry substances in blood
enzymes amylase, lipase control chemical activity of cells
hormones insulin coordinate activity of systems
defense antibodies provide protection from foreign substances
enzymes are a type of protein made by all living cells. they can affect cellular reactions. each enzyme works best in its optimum environmental conditions.
enzyme activity at different temperatures
based on the graph, what temperature range would be considered the optimum temperature for this enzyme?
a. between 0°c and 5°c
b. between 18°c and 28°c
c. between 28°c and 38°c
d. between 40°c and 50°c

Explanation:

Step1: Identify the peak of the curve

The optimum temperature for an enzyme is when the rate of reaction is highest. On the graph, this is the peak of the curve.

Step2: Determine the temperature range of the peak

Looking at the x - axis (temperature) corresponding to the peak of the curve, it is between 28°C and 38°C.

Answer:

C. between 28°C and 38°C