Exam (elaborations)
BASIC BIOCHEMISTRY QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
- Course
- Institution
BASIC BIOCHEMISTRY QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
[Show more]
Content preview
BASIC BIOCHEMISTRY QUESTIONS AND ANSWERS WITH SOLUTION S 2024 Atom - ANSWER basic unit of matter Nucleus - ANSWER center of atom electron - ANSWER negatively charged particle in electron cloud(atomic number = number of protons) proton - ANSWER positively charged particle at center of atom(atomic number & number of electrons) element - ANSWER pure substance that consists entirely of one type of atom. isotopes - ANSWER atoms that differ in the number of neutrons they contain radioactive isotopes - ANSWER nuclei are unstable and break down at a constant rate over time compound - ANSWER substance formed by 2 or more elements in definite proportions ionic bind - ANSWER one or more electrons are transferred from one atom to another ions - ANSWER electrically charged atoms that have gained or lost electrons. covalent bond - ANSWER a chemical bond that involves sharing a pair of electrons between atoms in a molecule molecule - ANSWER two or more atoms held together by covalent bonds van der Waals forces - ANSWER intermolecule force of attraction polar substance - ANSWER molecule in which the charges are unevenly distributed (cell membrane is non polar and surrounds cells in our body; some animals use oils to waterproof themselves) hydrogen bond - ANSWER attraction between a hydrogen atom with a partial positive charge and another atom with a partial negative charge Properties of Water - ANSWER great solvent high heat capacity polar substance less dense as solid surface tension strong adhesion cohesion cohesion - ANSWER attraction between molecules of the same substance(allows water and other liquids to be transported throughout organisms) adhesion - ANSWER attraction between molecules of different substances(from hydrogen bonds) surface Tension - ANSWER resistance on top from hydrogen bonds (organisms use tension to move across water) heat Capacity - ANSWER amount of heat energy required to increase its temperature -absorbs and releases heat slowly (helps organisms maintain homeostasis) less dense than solid - ANSWER ice floats( allows organisms to live under the ice) mixture - ANSWER a material composed of two or more elements or compounds that are physically yet not chemically combined solution - ANSWER type of mixture in which all components are evenly distributedThe benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Performance. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $20.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
74735 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now