Gives strength to cell: would this be plasma membrane or cell wall

Photosynthesis uses co2 and cellular respiration produces co2. we call the point when the two processes are in balance--when there is no net production of co2--the compensation point. how might you limit one of the processes in order to achieve a compensation point?

Hemoglobin is a proton that carries oxygen around your body what is hemoglobin made from

If a human has 23 pairs of chromosomes in every muscle cell of its body how many chromosomes will be in a human egg or sperm