Of the three methods, two involve transmitting an extracellular stimulus through membrane bound proteins or receptors. an extracellular stimulus could interact with a membrane-bound protein and directly initiate a metabolic change through a within the cell.
a) true
b) false

The phylogenetic tree illustrates the relationship between humans and our closest living relatives. the tree was based on biochemical comparisons, including dna and amino acid sequences. according to the biomolecular data, we could infer that a) the four organisms do not have a common ancestor. b) humans are more closely related to chimps than any other apes. c) chimps are more closely related to gorillas than they are to humans. eliminate d) there is no evidence if any relationship between the four branches on the tree.

Which of the following describes a difference when gram-positive bacteria are compared to gram-negative bacteria?

Which example would the nurse consider to be a part of systems thinking theory?