In the lungs, oxygen diffuses into the bloodstream, and carbon dioxide diffuses out through _[blank]_.

veins

alveoli

arteries

kidneys

Glucose from digested food enters intestinal epithelial cells by active transport. Why would intestinal cells use active transport when most body cells use facilitated diffusion?

What do you call a cow that never gives milk?

Sucrose and lactose are disaccharides that have the same chemical formula, C12H22O11. However, these sugars have different characteristics and behave differently in chemical reactions.

Aquatic biomes are characterized by

in bobcats, long tails (L) are dominant to short tails (l). if all the babies have short tails what kind of tails to the parents have?

Why do it rain in the sun

The table below shows the number of foot bones in some horse fossils. Horse Fossil Record Horse Fossil Number of Foot Bones P 19 Q 17 R 24 S 13 Ancient horses had more bones in their foot then present-day horses.

Which occurs during translation but not during transcription? C a). A DNA template is used to create an mRNA strand. b). A tRNA template is used to create a DNA strand. c). A tRNA template is used to create an mRNA strand. d).

Wheelchair athletes can have difficulty retaining body heat when the temperature drops to approximately

What do sperm cells look like