Aclass of chemicals called neurotransmitters is important in the transmission of nerve impulses. neurotransmitters are packaged by the cell into small, membrane-bound sacs called vesicles. upon receiving a chemical signal, the vesicles move towards the cell membrane and fuse with it, releasing the enclosed neurotransmitters from the terminal end of the nerve cell. which organelle is most likely responsible for packaging neurotransmitters into a vesicle?

What are two reasons for why a species might disappear from the fossil record?

Coat color in cats is determined by genes at several different loci. at one locus on the x chromosome, one allele (x ) encodes black fur and another allele (xo) encodes orange fur. females can be black (x x ), orange (xoxo), or a mixture of orange and black called tortoiseshell (x xo). males are either black (x y) or orange (xoy). bill has a female tortoiseshell cat named patches. one night, patches escapes from bill\'s house, spends the night out, and mates with a stray male. patches later gives birth to the following kittens: one orange male, one black male, two tortoiseshell females, and one orange female. what are the genotypes of patches, the stray male, and the kittens?

What are the seven economic and social goals?