In this laboratory work, students study the structure and chemical composition of bones. Using a chicken bone as an example, they observe its external and internal structure and conduct experiments demonstrating the role of organic (collagen) and inorganic (calcium and phosphorus salts) substances.
Laboratory work #9: «Study of the structure and chemical composition of bones» Read More »
In this laboratory work, students study the action of the enzyme catalase found in potato cells.
Laboratory work #1: «Study of the effect of enzyme immobilization on their activity» Read More »
Description: This work models the “mark-recapture” method, which is used in ecology to estimate animal population size in the wild. Students perform a series of “captures” with beads representing individuals of a population and, based on statistical calculations, determine its size.
Description: In this laboratory work, students will become familiar with the main organelles of the cell and their functions, learn to analyze microphotographs, identify the depicted structures, and compare their roles in cell activity. The practical part includes completing tasks in the worksheet, drawing a cell diagram, and modeling its structure using images of organelles.
Laboratory work #3: «Description of the main components of cells using microphotographs» Read More »
Description: In this work, students will prepare and compare different nutrient media (milk, potato, sugar-agar), inoculate microflora from a fermented dairy product, and then observe the growth of microbial colonies.
Description: In this laboratory work, students study modificational variability using the growth of mung bean seedlings under different conditions as an example. During the experiment, the length of the stems is measured, and a variation series and distribution curve are constructed. This helps identify the patterns of modificational variability and consolidate knowledge about its manifestations in living organisms. Long-term plan section Subsections of the Standard Curriculum Learning objectives Patterns of heredity and variability Modificational variability. Variation series of traits. 10.2.4.1 to study the patterns of modificational variability
Description: In this lab, students will perform qualitative tests to detect proteins in various biological substances such as milk and egg white.
Laboratory work #2: «Determining the Protein Content in Biological Samples» Read More »
Description: In this lab activity, students will investigate the composition of photosynthetic pigments in the leaves of various plants using the method of paper chromatography. Rf values for each pigment will also be calculated, allowing to establish the link between chloroplast structure and its function.
Description: In this lab work, students investigate the effect of external factors — temperature and pH — on protein structure. Egg white is used as an example, as it contains the protein albumin, which is sensitive to changes in the environment. During the experiment, students observe the process of protein denaturation under the influence of acid, base, and heat.
In this project, students will step into the world of molecular biology by conducting a fun experiment to extract DNA from ordinary strawberries!
Strawberry DNA extraction Read More »
