Students work in teams to try to answer questions to cross the board in any direction. Click on hexagons once for one team's correct answers (to change it to one colour) or twice for the second team (to get a second colour). Two versions of the slides are included - an easy one based on letters (which can be too obvious) and a second one where students pick a number (more challenging!). Word document of questions and answers included.
Revision game/activity. Following the instructions on the first powerpoint slide, students draw out a 16-square grid. Alternatively, give out a copy of the second slide. Students decide if each statement is true (tick) or false (cross). Review answers by right clicking on each square in the grid (tick or cross will appear).
This is a story… about feeding relationships. \ introduces herbivores, carnivores, symbionts, saprobionts, parasites and autotrophs through the story Jack and The Beanstalk. Planet SciCast describes the short video as 'A terrific example of how good delivery and simple visuals can combine to rattle through a considerable amount of material in no time flat'.
A resource aimed at advanced level biology students with each step of the electron transport chain (oxidative phosphorylation) clearly and succinctly described in a series of bullet points. The challenge for students is to use this information to draw their own diagrammatic representations of each process. This resource is best used after a taught lesson on the electron transport chain and a means of recapping each point. Students should have experience in drawing out reaction pathways (e.g. in glycolysis or Kreb's cycle) before they attempt this activity. A shorter DRAW IT activity is included for both the Link reaction and Kreb's cycle as a bonus resource.
Key words: electron transport chain, final acceptor, chemiosmosis, hydrogen ions, electrons, carriers, ATP, coupled, ATPase, energy, oxidative phosphorylation
Aimed at advanced biology students, this resource leads students through the design and use of a respirometer. The first few questions deal with causes of pressure changes inside a respirometer tube and predicting the direction in which fluid within a manometer tube would flow. The worksheet then moves on to cover two different investigations - measuring the amount of oxygen consumed over time and measuring the amount of carbon dioxide produced over time. Tables for the recording of data and calculations (e.g. converting distance measurments to volumes) are provided along with questions that check understanding. The data gathered from both oxygen consumption and carbon dioxide can be plotted as graphs to calculate rate of respiration or used to calculate RQ values, indicating which respiratory substrate is being used by the organisms under test (blowfly larvae are suggested). The second worksheet in this resource deals specifically with a thermo-barometrically balanced respirometer and calculation/interpretation of RQ values.
Key words: respirometer, manometer, blowfly larvae, maggots, rate, RQ value, volume, distance, temperature, control, potassium hydroxide, thermo-barometrically balanced
A resource aimed at advanced level biology students, this worksheet leads students through an area that often causes difficulty - interpreting evidence for the Calvin Cycle. The worksheet looks at the classic experiment performed by Melvin Calvin that provided evidence for the sequence of events that occurs in cyclic photophosphorlyation or the light-independent reactions of photosynthesis. The worksheet introduces the idea of radioactive tracers and asks students to predict the effect of switching lights off or reducing carbon dioxide levels. Graphs are shown recording the levels of RuBP and GP in response to these changes.
Answers to each question are provided on the second page of this worksheet
Key words: Light independent reaction, cyclic photophosphorylation, ATP, RNADP, glycerate - 3- phosphate, triose phosphate, ribulose bisphosphate, ribulose phosphate, light dependent reaction, calvin cycle
A resource aimed at advanced level biology students, this worksheet requires students to identify each key component of a chloroplast and link to its role in photosynthesis. This is a useful starter activity that can be used following an initial lesson on the basics of chloroplast structure or it could be used as a homework research task before teaching a topic on photosynthesis. Answers to all of the questions are provided on the second worksheet.
Key words: chloroplast, photosynthesis, chlorophyll, absorb, light, light dependent, light independent, thylakoid, stroma, envelope, photosystems, granum, grana, starch