What attractive force holds two hydrogen atoms and one oxygen atom together to make the substance water?

A. Molecules

B. Valence electrons

C. Chemical bonding

D. Cations

quzilet What is the most important nutrition concern for the person with Alzheimer's disease? a) prevention of weight loss b) elimination of dietary aluminum c) supplementation with zinc d) treatment with the medicinal herb e) ginkgo biloba.

What is the atomic number of an atom that has 6 protons, 6 neutrons, and 6 electrons?

An ion must cross the cell membrane through active transport instead of passive when the ion is ... a. negatively charged b. carried across by a protein c. going against the concentrate ingredient d. to small to move independently

True or false, heart muscle can depolarize spontaneously in the absence of any external stimulation

Regular body exercise keeps _ in tone and strengthens the_. *The first answer can't be body, as that is part of the exercise itself

In the following experiment, what is the independent variable? Dr. Honeydew would like to test the effect of chlorine on Beaker's hair color. To test this he pours heavily chlorinated pool water on the right side of Beakers head.

If a small founder population of 12 people ends up on a small island, and one member of the population had a mutation that creates a new allele, what is the likelihood that the allele will be eliminated from the population?

Homologous structures (Group of answer choices): A. are also called analogous structures. B. have identical functions. C. are shared by organisms of the same genus. D. have fully divergent functions. E.

Which of the following is true of an enzyme? (mark all that apply) a. it is a protein b. it is a catalyst c. it binds to many different substances d. it is small compered to its substrates

Which term would be applied to a regulatory condition that occurs when protein is associated with a particular section of DNA and greatly reduces transcription? A) induction B) negative control C) stimulation D) positive control E) activation