Dcpip - Study guides, Revision notes & Summaries

BIO 354 Cell Bio Lab Exam | Questions and Answers Imagine you are a scuba diver the size of a virus exploring huge algae cells. If you wanted to see how the water molecules are split inside the thylakoids space, how many membranes would you have to cross to get there? 3 You would go through the cell wall, to get the plasma membrane then you would be inside the cytoplasm. From there you would swim to the chloroplast and cross the outer and I. Er membranes to get the storms, where you'd see ...

Humans produce sweat as a cooling mechanism to maintain a stable internal temperature. Which of the following best explains how the properties of water contribute to this physiological process? - ANSWER The high heat of vaporization of water allows the body to remove excess heat through a phase change of water from liquid to gas A student placed a semipermeable membrane inside a U-shaped channel with two chambers, as shown. The membrane permits the movement of water but not salt. The...

AP Biology MCQ Practice Exam 1 Questions and Answers Already Passed 12. Which of the follwing best describes the production of DMSP by coral and coral symbionts? 13. Which of the following best describes the effect of temperature on corals' ability to produce DMSP as shown in Figure 1? 14. Which of the following best describes the difference between the total amount of DSMP produced by adults compared to juveniles at the start of the 32C trial. 15. In addition to the effect of temperat...

Humans produce sweat as a cooling mechanism to maintain a stable internal temperature. Which of the following best explains how the properties of water contribute to this physiological process? - ANSWER The high heat of vaporization of water allows the body to remove excess heat through a phase change of water from liquid to gas A student placed a semipermeable membrane inside a U-shaped channel with two chambers, as shown. The membrane permits the movement of water but not salt. The...

1. Investigate the effect of caffeine on heart rate of Daphnia - Topic 1 - Answer Daphnia of same species Placed on microscopic tray in pond water in bits of cotton and allowed to acclimatise for 5 minutes Then BPM counted using tally marks of a sheet of paper for 15 seconds, x4 to give BPM repeated with unknown conc. of caffeine (blind) 0.0% and distilled water, 0.1% and 0.5% Repeat with each daphnia and with other daphnia calculate mean 2. Investigate the vitamin C content of food ...

AQA A-Level Biology Paper 2 Predicted Paper 2023 Name …………………………………………………………………… Date ………………… 2 hours allowed. You may use a scientific calculator and a ruler with millimetre measurements. Grade boundaries These are VERY rough guesses! Getting a B on this paper does not guarantee you the same mark in the exam. • A* 65% • A 55% • B 45% • C 40% • D 35% • E 30% ...

Biology Edexcel Practicals A Level Questions With Complete Solutions 1. Investigate the effect of caffeine on heart rate of Daphnia - Topic 1 Daphnia of same species and volume Placed on microscopic tray in pond water in bits of cotton and allowed to acclimatise for 5 minutes Then HR counted using tally marks of a sheet of paper for 15 seconds, x4 to give hr/min repeated with unknown conc. of caffeine (blind) 0.0% and distilled water, 0.1% and 0.5% Repeat with each daphnia and with othe...

state how an unsaturated lipid differs from a triglyceride (1 mark) - Ansan unsaturated lipid has double bonds between its carbons. compare and contrast diffusion and active transport (3 marks) - Ans-both mechanisms move molecules through the phospholipid bilayer -in both, molecules can move through proteins -diffusion occurs down a concentration gradient whereas active transport occurs against a concentration gradient - diffusion does not require energy but, active transport requires ...

SIT- releasing large numbers of sterile males Explain how using the SIT could reduce transmission of dengue... - Ans .Intraspecific competition Do not breed Suggest why the scientists released more transgenic males every week... - Ans .To replace ones that have died (they carry a lethal gene). Explain the advantage of the student using the IC50 in this investigation... - Ans .Provides a reference point. Explain how chemicals which inhibit the decolourisation of DCPIP could slow the grow...

Biology Edexcel Practicals A Level Questions With Complete Solutions 1. Investigate the effect of caffeine on heart rate of Daphnia - Topic 1 Daphnia of same species and volume Placed on microscopic tray in pond water in bits of cotton and allowed to acclimatise for 5 minutes Then HR counted using tally marks of a sheet of paper for 15 seconds, x4 to give hr/min repeated with unknown conc. of caffeine (blind) 0.0% and distilled water, 0.1% and 0.5% Repeat with each daphnia and with othe...