O2 and Co2,
but we breathe out the Co2 again + the O2 which is converted in more Co2
Oxygen is inhaled into the lungs.
Oxygen
Oxygen
white blood cells
Cholesterol enters animal cells when the animal consumes and processes something that contains cholesterol. The cholesterol then enters through the cells permeable surface.
Goes under the seaCO2 is diffused from atmosphere to the plants. CO2 enters through stomata. Then it enters into cells
The cells that regulate how much air and water pass through the stomata are called guard cells.
A hormone is a naturally occurring substance (chemical) that affects the behaviour or metabolism of other cells through signalling.
Needed substances are carried to the body's cells by RBC's, or red blood cells. Red blood cells contain hemoglobin, a substance that allows proteins to bond to them. However WBC's(white blood cells) provide the body's cells with much needed protection.
Haemoglobin is the substance in Red Blood cells needed to carry oxygen.
the follicular epithelial cells of the thyroid.
Depends on how you consume the sugar. Usually through blood cells, but sometimes the sugar enters straight to your cells. There is no definite answer.
Carries information throughout the body and to other cells.
after the oxygen from the air enters the lungs,the oxygen gets sent to the heart and then travels through the arteries with the blood.