Which element is found in nucleic acids but not in proteins?

carbon

hydrogen

nitrogen

phosphorus

Which of the following are synthetic organic compounds?

An example if a polygenic trait is

The first heart sound (s1) is associated with closure of which heart valves?

In 1986, a nuclear power accident in Chernobyl, USSR (now Ukraine), led to high radiation levels for miles surrounding the plant.

imagine two populations of equal size; one with low levels of genetic variation, and the other with high levels of genetic variation.

TRUE OR FALSE being heterozygous for a gene may cause only the dominant allele to be expressed, but the recessive gene may be passed to offspring that express it

Reverse fault is caused by a type of stress known as

Which of the following are characteristics of Chytridiomycota? Check all that apply. flagellated spores spores produced in the ascus lack reproduction phase important in the food industry important in the digestion of animals can cause disease in

Condensation occurs when: water is released from plants ground water moves to the surface surface water changes into water vapor atmospheric water changes into precipitation

Why do molecules go back and forth across the cell membrane?