{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Review - Review Review Sheet 4 Atoms Molecules and...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Review Review Sheet 4: Atoms, Molecules and Life (Chapter2) Keywords acid:  a substance that releases hydrogen ions (H + ) into solution; a solution with a pH of less  than 7. acidic:  with an H +  concentration exceeding that of OH -  ; releasing H + . antioxidant:  any molecule that reacts with free radicals, neutralizing their ability to damage  biological molecules. Vitamins C and E are examples of dietary antioxidants. atom:  the smallest particle of an element that retains the properties of the element. atomic nucleus:  the central part of an atom that contains protons and neutrons. atomic number:  the number of protons in the nuclei of all atoms of a particular element. base:  (1) a substance capable of combining with and neutralizing H +  ions in a solution; a  solution with a pH more than 7; (2) in molecular genetics, one of the nitrogen-containing,  single- or double-ringed structures that distinguish one nucleotide from another. In DNA, the  bases are adenine, guanine, cytosine, and thymine. basic:  with an H +  concentration less than that on OH - ; combining with H + . buffer:  a compound that minimizes changes in pH by reversibly taking up or leasing H +  ions. calorie:  the amount of energy required to raise the temperature of 1 gram of water by 1  degree Celsius.
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern