Which of the following is a typical characteristic to distinguish Eukarya from both Bacteria and Archaea and why? A
cell organelles, because they are present in Eukarya
B
nuclear envelope, because they are only found in Bacteria and Archaea
C
circular chromosomes, because they are only found in Bacteria and Archaea
D
exons in the DNA, because they are uncommon in Eukarya

Where in the body can you find chemoreceptors? a. on the skin and ears, to detect pressure, touch, motion, and sound b. on the retina, to detect a single photon of light c. on the skin, to detect temperature or specific chemicals d. on the tongue and in the nose, to detect taste or odor

Atypical human cell is approximately 12.00 μm in diameter and enclosed by a membrane that is 5.000 nm thick. (a) what is the volume of the cell including the membrane? (b) what is the volume of the cell membrane? (c) what percent of the total volume does its membrane occupy? to simplify the calculations, model the cell as a sphere. enter your answers using four significant figures.

During which phase does earth see more than half of the moon's surface? 1)first quarter2)third quarter3)waxing gibbous4)waning crescent