What is the main function of hemoglobin?

a$)$ Digest food

b$)$ Carry oxygen

c$)$ Fight infections

d$)$ Store energy

Which process converts glucose into energy in cells?

a$)$ Photosynthesis

b$)$ Respiration

c$)$ Osmosis

d$)$ Diffusion

What is the term for organisms that make their own food?

a$)$ Heterotrophs

b$)$ Autotrophs

c$)$ Decomposers

d$)$ Parasites

What is the largest organ in the human body?

a$)$ Liver

b$)$ Heart

c$)$ Skin

d$)$ Brain

please solve all questions