Osmosis of water from an area of lower to an area of higher solute concentration across a semipermeable membrane.
Overview of animal and plant cells. Topics include cell walls, vacuoles, chloroplasts, peroxisomes, lysosomes, mitochondria, etc.
Overview of cell signaling. Autocrine, paracrine and endocrine signaling.
Overview: glycolysis, pyruvate oxidation, the citric acid cycle (Krebs cycle), and oxidative phosphorylation.
Primary, secondary, tertiary and quaternary protein structure. Beta pleated sheets and alpha helices.
How oxidation of co-enzymes like NADH can lead to the production of ATP through oxidative phosphorylation.
Pedigree for determining probability of exhibiting sex linked recessive trait.
An introduction to reading and analyzing pedigrees.
In this activity students analyze a familys pedigrees to make a claim based on evidence about mode of inheritance of a lactose intolerance trait, determine the most likely inheritance pattern of a trait, and analyze variations in DNA to make a claim about which variants are associated with specific traits. This activity serves as a supplement to the film Got Lactose? The Co-evolution of Genes and Culture (http://www.hhmi.org/biointeractive/making-fittest-got-lactase-co-evolution-genes-and-culture). The film shows a scientist as he tracks down the genetic changes associated with the ability to digest lactose as adults. A detailed teachers guide that includes curriculum connections, teaching tips, time requirements, answer key and a student guide can be downloaded at http://www.hhmi.org/biointeractive/pedigrees-and-inheritance-lactose-intolerance. Six supporting resource and two click and learn activities are also found on the link.
Understanding per capita population growth and exponential growth.
How homologous chromosomes separate into two sets. Prophase I, metaphase I, anaphase I, and telophase I.
How sister chromatids separate to form gametes. Prophase II, metaphase II, anaphase II, telophase II.
Understanding how the same genotype can still result in variation of phenotype based on environment.
Overview of photosynthesis. What photosynthesis accomplishes, why it's important, and how the light-dependent and light-independent reactions work together. Photosynthesis is usually represented by the equation 6 CO2 + 6 H2O + light --> C6H12O6 + 6 O2. During this process, organisms such as plants go through the light-dependent and light-independent reactions to convert carbon dioxide and water into sugars and oxygen. Created by Sal Khan.
This lesson covers the process of photosynthesis and the related plant cell functions of transpiration and cellular respiration. Students will learn how engineers can use the natural process of photosynthesis as an exemplary model of a complex yet efficient process for converting solar energy to chemical energy or distributing water throughout a system.
How and where photosynthesis evolved in the ancestors of cyanobacteria (along with a discussion of endosymbiosis).
Understanding the structure of plant cell walls.
This site helps students see how plants and animals interact to accomplish pollination. Students (Grades 3-8) identify plant and animal parts involved in pollination, connections between pollination and food production, relationships between pollinators and the plants they pollinate, and ways flowers have adapted to encourage pollination.
This site helps students see how plants and animals interact to accomplish pollination. Students (Grades 3-8) identify plant and animal parts involved in pollination, connections between pollination and food production, relationships between pollinators and the plants they pollinate, and ways flowers have adapted to encourage pollination.
Introduction to PCR (polymerase chain reaction).