Bio HL Content

Atypical Cells

Evidence for endosymbiosis

Plant Response

Regulation of blood glucose

High blood glucose levels

Low blood glucose levels

Thermoregulation

Thermoregulation - Low temperatures

Thermoregulation Mechanisms

Structure of a nephron

Ultrafiltration

Selective reabsorption

Reabsorption

Structure of kidney

The loop of Henle

High concentration of solutes

Osmoregulation

Differences between female and male gametes in humans

Female Reproductive system

ovarian and uterine cycles

Follicular phase

Luteal Phase

Fertilisation in humans

In Vitro Fertilisation

Directionality of RNA and DNA

Purine-to-pyrimidine bonding as a component of DNA helix stability

Structure of a nucleosome

Evidence from the Hershey-Chase experiment for DNA as the genetic material

Directionality of DNA polymerases

Differences between replication on the leading strand and the lagging strand

Functions of DNA primase

DNA polymerase Ill

DNA polymerase I,

DNA ligase

DNA proofreading

Speciation

Adaptive radiation

Barriers to hybridisation

Abrupt Speciation