[Q]: What is the missing first step of the following process: - The oxygen travels into the lungs - The oxygen binds to hemoglobin proteins within erythrocytes (red blood cells) - The erythrocytes are pumped through the body by the heart - All cells receive the oxygen.
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[A]: Oxygen enters the body through the mouth or nose

[Q]: What is the missing first step of the following process: - Placed into the dishwasher - A detergent is added to the detergent dispenser - The dishwasher is closed - The power is turned on - In about 1.5-2 hours, the dishes are clean -
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[A]: Dirty dishes are rinsed

[Q]: What is the missing first step of the following process: - Sunlight is gathered by the leaves of the plant - The sunlight is broken down into glucose through photosynthesis - The glucose travels the plant - The plant uses that glucose as energy to grow.
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[A]: Green is a color that gathers sunlight easily

[Q]: What is the missing first step of the following process: - Blood is carried to the kidneys through the renal arteries - The kidneys contain filters inside - The filters capture the waste products - The waste is combined with water to make urine - The urine leaves the kidney and is collected in the bladder - The cleaned blood is returned to the body.
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[A]:
Waste products are deposited in the blood