PreparED Study Materials
BIOL CH 144: BIOL CH 144
School: University of California - Los Angeles
Number of Notes and Study Guides Available: 3
Notes
Videos
The Remarkable Conservation of Peptidyl Transferase: Drawing Conclusio
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Join us as we explore the fascinating world of peptidyl transferase, one of the most conserved sequences in biology. In this video, we delve into the implications and draw intriguing conclusions from its exceptional conservation across species.
Converting Various Units: Weight, Time, Height, and Volume
Want To Learn More? To watch the entire video and ALL of the videos in the series:
This video focuses on unit conversions and the practical use of conversion factors to translate quantities between different units. It provides clear examples of converting 70 kilograms to pounds, translating 14 billion years into seconds, changing the height of a basketball player from feet and inches to meters, and converting cubic meters to liters, illustrating the importance of this skill in various scientific and everyday scenarios.
Specific Rotation Calculation: Polarimeter Demystified
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Discover how to calculate specific rotations of samples using a polarimeter in this informative chemistry tutorial. Explore optical activity and learn step-by-step calculations for two real-world examples. Enhance your understanding of specific rotation and its application in chemical analysis.
Drawing Lewis Structures for Ionic Compounds: SrO Li2S CaI2 & RbF
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Explore the art of constructing Lewis dot structures for ionic compounds such as SrO Li2S CaI2 and RbF. Understand the electron transfer process by diving into each atom's valency and its role in compound formation. Unpack the intricacies of ionic interactions for a deeper chemistry insight.
Mole Count in Elemental Samples (Zn, Ar, Ta, Li)
Want To Learn More? To watch the entire video and ALL of the videos in the series:
This video outlines the process of calculating the number of moles in various elemental samples. It begins by explaining the relationship between molar mass and atomic weight. Each sample's mass is divided by the respective element's molar mass to find the number of moles. It provides detailed calculations for four elemental samples: zinc (Zn), argon (Ar), tantalum (Ta), and lithium (Li), converting results to scientific notation where necessary. The script demonstrates how to determine the mole
1828 Synthesis of Urea: Pioneering Steps in Biochemistry
Want To Learn More? To watch the entire video and ALL of the videos in the series:
Explore the groundbreaking moment in 1828 when Wöhler synthesized urea, the first organic compound. Join us in this video as we trace the profound impact of this achievement on the field of biochemistry and its significance in unraveling the mysteries of life's complex chemistry.