Based on the way living things are organized, what level combines to form organ systems?

Atoms

Cells

Organs

Tissues

Why do we die of old age? I'm not looking for answers like 'the organs shut down,' or 'our body stops producing genes.' I'm looking for why that happens.

Which of the following would indicate that a person has developed a hereditary form of hypertension

Which hormone is not matched correctly with its principal action? (A) gastrin - increases stomach movement (B) erythropoietin (EPO) - increases white blood cell production (C) leptin - suppresses appetite (D) atrial natriuretic peptide (ANP) -

What happens when a mechanical wave runs through a medium?

What is the genotype of the wild-type trihybrid soybean plant? use l, r, and t to represent dominant alleles and l, r, and t for recessive alleles?

Un ejemplo de mitosis en el trabajo es una hoja que: A) se vuelve amarilla. B) Creciendo tomando dióxido de carbono c) Hospedar una oruga

During transpiration, water exits the leaf via the A. mycorrhiza. B. stomata. C. roots. D. tracheids.

How do you call a prokaryote kingdom that typically live in oxygenated environments, and are not as adapted to harsh environments as the other prokaryote kingdom?

Rosa has a vegetable garden. She places earthworms, which are decomposers, in the garden soil. What is Rosa most likely trying to do? A. prevent insects from eating the plants B. create usable food energy for the plants C.

A transposable element (TE), or transposon, is a __ sequence that can change its __ within a genome, sometimes creating or reversing mutations and altering the cell's __.