What is the electron transport chain made up of?

Which of the following is a characteristic of lipids? (Choice A) AThey are composed of nitrogenous chains. (Choice B) BThey are not soluble in water. (Choice C) CThey are either fats or oils. (Choice D) DThey are polar molecules.

Which two structures are connected via a respiratory membrane?

What is a motor neuron?

A nonnative species of fish is introduced into a leg which would most likely prevent this fish for becoming an invasive species A - The lake ecosystem has no other larger fish B - The fish shares a niche with another species C - There are no

Matched chromosomes carrying information about the same characteristics in the organism are called

Describe the process of speciation in relation to change in gene frequency, change in environment, natural selection, and genetic drift.

Which substance acts as a buffer in natural water? A) minerals and salt B) distilled water C) sulfuric acid D) a pH indicator

How many electrons are in a full valence shell? 6 8 4

What are three significant differences between meiosis 1 and meiosis 2

We produce many more synapses than we need, and then retain only those that are used in a "use it or lose it" fashion. what does this demonstrate?