Select which of the following statements are true about ions:
a positively charged particle and a negatively charged particle attract each other
two negatively charged particles attract each other
a positively charged particle and a negatively charged particle repel each other
two positively charged particles attract each other

How many chromosomes does each human cell contain? a. 23 chromosomes b. 26 chromosomes c. 43 chromosomes d. 46 chromosomes

Agroup of plant cells was exposed to radiation, which damaged the chloroplasts and caused them to lose function. if the mitochondria were unharmed, what would happen to the overall function of the plant cells? a. the cells would not be able to make food, but would be able to release energy from biomolecules. b. the cells would not be able to replicate dna, but would be able to break down waste. c. the cells would not be able to break down waste, but would be able to replicate dna. d. the cells would not be able to release energy from biomolecules, but would be able to make food.

During the process of blank and molecules such as a glucose must use a protein channel to cross through a cell membrane