Sub-units of proteins are called?

sugar

fatty acid

amino acid

nucleic acid

What is an area of land that is covered with water for at least part of the year

Discuss two ways that all cells are alike?

Does a viris have eukaryotic cells

Based on the food chain, if a hawk acquires 50 calories of energy, how much energy did the grasshopper get from the plant?

The nitrogenous bases cytosine and thymine are

Suppose a large number of dead fish are found floating in a lake. how would you determine whether they died from cultural eutrophication or from exposure to toxic chemicals?

Which best explains how gravity contributes to the formation of layers in protoplanets? Gravity attracts materials and causes compaction, which produces heat and leads to the melting, sinking, and rising of materials.

1. As an object moves towards another object the sound waves bunch up. True Or False 2. As an object moves toward another object the sound waves have lower frequency. True or False. 3.

Do we classify viruses as living

What caused the evolution of antibiotic-resistant bacteria?