How may a gene be defined

A. a segment of DNA

B. a segment of a protrein

C. a part of the cell membrane

D. a complete protein

In an ecological pyramid, what happens to energy, biomass and the number of species as you move up. why?

which of the following is meiosis (parent cell, DNA replicates, 2 daughter cell) or (parent cell, DNA replicates, 2 daughter cells, 4 daughter cells.)

Ingestion of water contaminated with fecal matter is the mode of transmission for

When many nerve impulses arrive in rapid succession at the synapse between a single stimulatory presynaptic neuron and a postsynaptic neuron, this situation is known as:?

A registered nurse is explaining the term "just culture" to the student nurse. which explanation provided by the registered nurse is accurate?

Which class of immunoglobulins sensitizes cells to allergens?

Which statement about somatic mutations is true? A. They exist in all the cells of the body. B. They are acquired through exposure to mutagens. C. They are inherited via sperm and egg cells. D. They are passed on to offspring.

In year three the farmer discontinue the use of the insecticide Which statement would best predict the population in generation 4

What happens to carbon atoms during cellular respiration or fermentation?

How are photosynthesis and chemosynthesis similar?