True or false: during stressful events, there is decreased blood supply to the skin, which results in "goose bumps."

How do the 2 types of endoplasmic reticulum differ?

Sampling lake water for microscopic organisms is not as easy as it sounds when you want to both count and identify species. in a given water sample, your bacteria of choice can be rare or difficult to culture, particularly given the mixture of bacteria in a biofilm. which of the following culture media would be best for growing fecal coliforms when they are relatively less abundant than other bacteria in the lake? anaerobic culture medium enrichment culture medium complex culture medium basic culture medium

Which best explains why there are 64 possible codons in the genetic code and only 20 amino acids that make protiens of living organisms on earth