in the human circulatory system veins have valves but arteries do not what would be the most likely result if veins did not have valves

A cloned plant has a diploid chromosome nunber of 12. What is the diploid chromosome number of the plant cell that was used to produce the cloned plant?

What other structures of the cytoskeleton would show the same pattern of microtubules as the flagellum?

Compare and contrast indirect versus direct values of biodiversity, and provide examples.

Bat wings are homologous to the front legs of cats. what does the term "homologous" mean in this context?

Loggerhead turtles need an incubation temperature between about 28 and 32 degrees Celsius. When temperatures are higher, more female turtles are produced. When temperatures are lower, more males are produced.

Based on its anatomy how would you expect this protist to obtain nutrition?

During which phase (s) of mitosis are chromosomes composed of two sister chromatids? a. prophase, prometaphase, metaphase, and anaphase b. prophase, prometaphase, and metaphase c. anaphase and telophase only d. all phases ofmitosis e.

How long can a person hold their breath before they pass out

10) The modality of a stimulus can be determined within the central nervous system by A) population coding. B) adequate stimulus for the sensory receptor cell. C) lateral inhibition. D) frequency coding.

How old is bone in which the carbon 14 in it has undergone 3 half lives