IB HL Biology 무료 기본 강의

1편입니다.

single copy gene vs highly competitive gene

Repeated sequences (also known as repetitive elements, or repeats) are patterns of nucleic acids (DNA or RNA) that occur in multiple copies throughout the genome. Repetitive DNA was first detected because of its rapid re-association kinetics. In many organisms, a significant fraction of the genomic DNA is highly repetitive, with over two-thirds of the sequence consisting of repetitive elements in humans.[1]

IB biology hl 수준이 문제입니다.

기출로도 출제된 적이 있습니다.

둘의 차이점을 정확히 인지하여야 합니다.

감사합니다.

2편입니다.

Intermolecular forces vs intramolecular forces

Intermolecular forces (IMF) are the forces which mediate interaction between molecules, including forces of attraction or repulsion which act between molecules and other types of neighboring particles, e. g., atoms or ions. Intermolecular forces are weak relative to intramolecular forces – the forces which hold a molecule together. For example, the covalent bond, involving sharing electron pairs between atoms, is much stronger than the forces present between neighboring molecules. Both sets of forces are essential parts of force fields frequently used in molecular mechanics.

학생들이 잘하는 부분입니다.

하지만 inter 와 intra를 구별 하지 못하는 학생들이 있습니다.

그래서 이러한 것을 도와주기 위해서 올립니다.

감사합니다.

3편입니다

Cellular respiration

Cellular respiration is a set of metabolic reactions and processes that take place in the cells of organisms to convert biochemical energy from nutrients into adenosine triphosphate (ATP), and then release waste products.[1] The reactions involved in respiration are catabolic reactions, which break large molecules into smaller ones, releasing energy in the process, as weak so-called "high-energy" bonds are replaced by stronger bonds in the products. Respiration is one of the key ways a cell releases chemical energy to fuel cellular activity. Cellular respiration is considered an exothermicredox reaction which releases heat. The overall reaction occurs in a series of biochemical steps, most of which are redox reactions themselves. Although cellular respiration is technically a combustion reaction, it clearly does not resemble one when it occurs in a living cell because of the slow release of energy from the series of reactions.

암기가 힘든 부분입니다.

Glycolysis, Link Reaction, krebs cycle, Electron Transport Chain,