Class notes
Lecture 1 - chemical components of the cell
- Course
- Institution
Summary about lecture 1 from professor Thunnissen about the chemical components of the cell.
[Show more]
Seller
Follow
stijnvantrijp
Content preview
Lecture 1 (LECTURE) – ChemicalComponents of the Cell
(Thunnissen)
Biochemistry:
- Explores life at the level of atoms and molecules
- Studies the structure and function of bio molecules
- Analyses how bio molecules behave and interact when they are combined with other
molecules both in- and outside a cel
There are essential concepts that unify chemistry and biology:
- Small repetitive units join to form larger, more complicated structures
- Slight variety can lead to great diversity
- Composition dictates form dictates function (composition > form > function)
- Stability is preferable to instability
- Change involves energy
- Changes can often be reversed
- Changes can happen at different rates
- Some processes need a helping hand to get them started and keep the under control
Chemical elements essential to cells
There are some chemical elements (atoms) that are vital to all biological cells: H, O, C, N, Na, K, Ca,
Mg, P, S and Cl.
The electronegativity is a measure of how strong the nucleus pulls on the outer shell electrons.
There is an arrangement in shells called an electron arrangement. When the outer shell is filled it is
called the valence electrons, the octet rule.
A couple of things to note:
- Electrons in the shell form pairs
- Electrons fill the shell nearest the nucleus first
- Shells can maximally contain 8 electrons (except
the 1st shell)
- Atoms strive to completely fill their outer shell
(octet rule) by sharing or transfer of valence
electrons, as shown in the different types below
Different bonds
- Ionic bonds is a complete exchange of valence
electrons between elements:
The 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 stijnvantrijp. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $3.77. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
56326 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now