Were there any eukaryotic cells on earth 1.5 billion years ago?

What happens to undigested food?

If a child were born with a mutation that made the ascending limb of the loop of henle permeable to water, what would be the minimum and maximum urine osmolarities the child could produce? units are in mosm. a. minimum 100 / maximum 300 b.

Josephine works in a biology lab at UCLA and they have recently come up with a magic strain of bacteria that converts cellulose (the dominant organic component of grass clippings) into glucose.

What is the end result of mitosis? one cell with two identical copies of DNA two cells with different copies of DNA one cell with two different copies of DNA

What effect does natural selection have on the allele frequency of a population?

Are Purple loosestrife affecting the lives of humans? If so, how.

What type of cells are produced by mitosis?

The shallow boarder area surrounding major land masses is called?

Styrofoam is very brittle. what will you expect to find when you examine the hardness of styrene

A 14-month-old toddler is able to recognize the shapes of objects and fit smaller boxes into larger boxes. which type of cognitive development does this action indicate?