An amoeba is a single-celled organism that feeds on algae, plant cells, and bacteria. when an amoeba feeds, it first makes contact with the food particle. next, the amoeba starts to surround the particle. once the particle is completely engulfed, it is surrounded by a layer of the amoeba's membrane, forming a vesicle. the ph in the vesicle is then lowered and the contents are degraded. what type of transport is involved in this process? a. endocytosis b. diffusion c. exocytosis d. passive transport

This aquarium exhibits biotic and abiotic factors in an aquatic environment. one of the abiotic factors is

Duchenne muscular dystrophy is a serious condition caused by a recessive allele of a gene on the human x chromosome. the patients have muscles that weaken over time because they have absent or decreased dystrophin, a muscle protein. they rarely live past their twenties. how likely is it for a woman to have this condition? a) women can never have this condition.b) one-fourth of the daughters of an affected man would have this condition.c) one-half of the daughters of an affected father and a carrier mother could have this condition.d) only if a woman is xxx could she have this condition.

Moving down the ramp from 6 meters to