Where do solar prominences occur?

a) photosphere

b) radiative zone

c) convection zone

d) core

Neurotransmitters (like acetylcholine) are required to conduct nerve impulses because the neurons do not physically touch each other or the cells on which they are acting.

What part of the cell is mostly water, why is that important?

Some human proteins that are used in therapeutics, such as insulin, can be produced by genetically modified yeast.

Which statement is true for chordate nerve cord a. It is dorsal and hollow. b. It is ventral and hollow. c. It is dorsal and solid.

What will happen if bone marrow gets destroyed?

How do electrons gain energy in photosystem 1? a. They absorb photons. b. They use energy in the form of glucose. c. They take energy from ATP molecules. d. They use energy from a hydrogen ion pump.

Is hydrogen gas a compound or mixture

Nutrients can be classified as essential or non-essential. all of the following are reasons why a nutrient could be considered an essential nutrient except

What is normal heart rate for an adult that is sitting quietly?

What are two reactants needed for cellular respiration?