Biology, 27.03.2020 20:52 elizabethhubbe
The concentration of nitrates is often higher in
plant roots than it is in the soil around them.
Plants maintain this difference in concentration
through
(1) active transport (3) excretion
(2) diffusion
(4) coordination
Answers: 3
Biology, 21.06.2019 15:00, wileycheyennem
The images show fossils of a modern bird and two extinct organisms (a tyrannosaurus rex and an archaeopteryx). based on the structure of the three organisms, it can be concluded that . the archaeopteryx and bird have wings, while dinosaurs have limbs. so, it can be concluded that .
Answers: 1
Biology, 22.06.2019 05:20, Lovebamagirl12
Which description provides the best objective summary of the article in the passage?
Answers: 1
Biology, 22.06.2019 14:50, megamorph
Lactase is essential for digesting lactose in milk. this enzyme is specific for this sugar. why? molecules and active sites vary in size; only properly sized molecules can fit. there is a precise compatibility between the active site and the lactose molecule. specificity refers to the action of the enzyme, such as hydrolysis, and relatively few molecules can be hydrolyzed. reaction-specific enzymes assume a fit by folding around the most numerous substrate molecules.
Answers: 1
Biology, 22.06.2019 15:00, jetblackcap
If you relate the doppler effect on sound to the color of light waves, a police car would be the color as it approaches and the color as it recedes away from the observer.
Answers: 3
The concentration of nitrates is often higher in
plant roots than it is in the soil around the...
plant roots than it is in the soil around the...
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