Which of the following is the main reason that humans need to include carbohydrates in their diet?
a. Carbohydrates act as catalysts to speed up chemical reactions.
b. Carbohydrates are broken down in cells for energy.
C. Carbohydrates combine to form many different proteins.
d. Carbohydrates are the building blocks for cell growth and repair.

b

Explanation:

question: which statement best describes the different properties of metals?

answer: they are shiny and bend without breaking.

since metals have certain characteristics properties, they include the following: they are ductile, malleable, shiny, hard, lustrous, flexible and they are good conductor of heat and electricity. so therefore, metals are not dull and they are not non-flexible as listed. instead, they are shiny and flexible.

hope this , have a good day. c;

the glands which are associated with each description is given below: