Graticule slide - Study guides, Class notes & Summaries

core practical questions biology b Exam Questions With Complete Solutions What are the four factors that affect enzyme activity? - ANSWER- 1. Enzyme concentration 2. Substrate concentration 3. Temperature 4. pH How is a control set up in a practical measuring enzyme activity? - ANSWER- Replace the enzyme solution with distilled water or boiled enzyme solution. How can a colorimeter determine the rate of reaction of trypsin and milk? - ANSWER- As trypsin digests the proteins in milk,...

volumetric flask - ANSWER used to accurately prepare solutions of various concentrations often used in titrations erlenmeyer flask - ANSWER can be used for mixing, transporting, and reacting, but are not appropriate for accurate measurements repippette - ANSWER hand operated pump that dispenses solutions beakers - ANSWER can be used to measure mass or dissolve a solvent into a soulte graduated cylinder - ANSWER used for precise measurements and are more accurate than erlenmeyer fl...

Graticule slide - ANSWER-marked with grid line, useful for counting or estimating a quantity Preparing acid solutions - ANSWER-Always add acid to 2/3 water, then add rest of water # of Animal species - ANSWER-over 1 million species and about 30 divisions # of insects - ANSWER-800,000 species, half of animal kingdom Characteristics of animal kingdom - ANSWER-muliticellular, heterotrophic, reproduce sexually, do not have cell walls or chloroplasts, can move at some stage of life, can r...

Mttc Integrated Science Life Sciences And General Knowledge Exam Test With 100% Correct Answers volumetric flask - CORRECT ANSWER-used to accurately prepare solutions of various concentrations often used in titrations erlenmeyer flask - CORRECT ANSWER-can be used for mixing, transporting, and reacting, but are not appropriate for accurate measurements repippette - CORRECT ANSWER-hand operated pump that dispenses solutions beakers - CORRECT ANSWER-can be used to measure mass or disso...

MTTC Integrated Science (Secondary) Questions with 100% Correct Answers | Verified | Updated 2024

MTTC Integrated Science (Secondary) Exam Questions With 100% Correct Answers Graticule slide - answermarked with grid line, useful for counting or estimating a quantity Preparing acid solutions - answerAlways add acid to 2/3 water, then add rest of water # of Animal species - answerover 1 million species and about 30 divisions # of insects - answer800,000 species, half of animal kingdom Characteristics of animal kingdom - answermuliticellular, heterotrophic, reproduce sexually, do not hav...

A-Level Biology – OCR 100% VERIFIED ANSWERS Describe what is meant by residual volume and state the standard volume - CORRECT ANSWER-The volume of air that remains in the lungs even after forced expiration, i.e. the air that remains in the airways and alveoli (usually 1.5 dm3) Describe what is meant by tidal volume stating a typical figure - CORRECT ANSWER-Volume of air moved in and out with each breath at rest. A normal value would be 0.5 dm3. What is a light microscope used for?...

A-Level Biology - OCR Questions With Correct Answers What is a light microscope used for? Observing living and dead specimins What are the pros and cons of a light microscope? Pros: Cheap, portable, easy to use, can study living specimens. Cons: Limited magnification, poor resolution. What is a laser scanning confocal microscope used for? Creating a high resolution, high contrast image, at different depths of the specimen. What is a transmission electron microscope be used for? Observi...

volumetric flask - Answer used to accurately prepare solutions of various concentrations often used in titrations erlenmeyer flask - Answer can be used for mixing, transporting, and reacting, but are not appropriate for accurate measurements repippette - Answer hand operated pump that dispenses solutions beakers - Answer can be used to measure mass or dissolve a solvent into a soulte graduated cylinder - Answer used for precise measurements and are more accurate than erlenmeyer fl...

What is cell theory? - ANSWER It states that the cell is the fundamental structure of all living matter, and that cells can only develop from other existing cells. Why was cell theory not fully developed before the mid-19th century? - ANSWER Before then, microscope magnification was not as powerful, and so scientists were unable to see and identify single cells or cell components. Describe the process of calibrating a microscope. - ANSWER 1. Place the stage micrometer on the stage and alig...