Cells in the human eye send nerve impulses to the brain that cause the pupil to constrict. this is an example of a reaction to what kind of stimuli? a. chemicals b. light c. touch d. sound

Hey me with this one❤❤❤❤ every organism needs food. does a cell also need it? explain very briefly.

The phylogenetic tree illustrates the relationship between humans and our closest living relatives. the tree was based on biochemical comparisons, including dna and amino acid sequences. according to the biomolecular data, we could infer that a) the four organisms do not have a common ancestor. b) humans are more closely related to chimps than any other apes. c) chimps are more closely related to gorillas than they are to humans. eliminate d) there is no evidence if any relationship between the four branches on the tree.

What condition is kept close to its set point in osmoregulation? a. body temperature b.platelet count c.blood glucose level d.water balance