In a typical marine food chain, which role do small, herbivorous fish occupy? Decomposer Primary producer Primary consumer Secondary consumer

Prokaryotic cells cell walls contain peptidoglycan sensitive to traditional antibacterial antibiotic. True or False

In natural selection, what is actually "selected?" A) alleles are directly selected B) genotypes are directly selected C) phenotypes are directly selected D) entire populations are directly selected

Researchers studying guppies in Trinidad found that guppies, in streams with high predation, reproduce earlier and more frequently. How would the scientists describe the selective force acting on the guppy population?

What is an metonymy

In pea plants P represents purple flowers while p represent white, and T represents tall plants while t represents short. Biologist cross two pea plants, each of the genotype PpTt. We would expect what phenotypic ratio from this dihybrid cross?

Harmful substances in the environment are called

For a couple of decades, biologists knew the nucleus contained DNA and proteins. The prevailing opinion was that the genetic material was proteins, and not DNA. The reason for this belief was that proteins are more complex than DNA. This is because:

Another word for "fats", these are made up of a glycerol and three fatty acids.

How do doctors know which blood types can be given to people in need of blood?

What is the term for the breakdown of organic sediment into inorganic phosphorous?