How many chromosomes are in a stomach cell?

The roots of plants take up nitrates from the soil. what are nitrates used to make? a.) starch b.) protein c.) fats d.) glucose

This is a biological process that requires oxygen.

Arrange the events of synaptic transmission in correct sequence. (1) sodium ions diffuse into the cell and cause a local potential (2) neurotransmitter binds with receptor on postsynaptic cell (3) neurotransmitter diffuses across the synaptic cleft

If an animal cell is placed in distilled water, it will A) remain the same size. B) shrink. C) swell and eventually explode. D) swell, but stop when the cell wall prevents further expansion.

The woolly mammoth lived during the Ice Age. Why did it become extinct? A) disease B) pollution C) over-hunting D) habitat change

A series of waves with decreasing wavelength labeled A, B, C, D, E, F, G from left to right as wavelength decreases.

Cameron is collecting data to determine the time of completion for each stage of germination in seeds. He is using bean seeds for his investigation and recording his results. He repeats his data collection many times to obtain reliable results.

Which human action has not lead to significant changes in Earth's biomes?

Which two characteristics of living things do viruses exhibit?

You are studying the source of new virus that has recently infected humans. You suspect that the virus was transferred from other primates (they exhibit a similar infection), specifically chimpanzees, gorillas, or orangutans.