Cells and Diffusion Quiz

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Explore diffusion and osmosis concepts

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Abigail

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Cells and Diffusion Quiz


Froggy Jumps Cells and Diffusion QuizVersión en línea Explore diffusion and osmosis concepts por Abigail 1 What term describes the variable that's deliberately changed in an experiment? a Independent variable b Dependent variable c Control variable 2 Which variable is measured in an experiment? a Dependent variable b Independent variable c Control variable 3 Which variables must be kept constant in an experiment? a Dependent variables b Independent variables c Control variables 4 Precise measurements are characterized by what feature? a Large spread b Little spread about the mean c Uncertain accuracy 5 Diffusion can move substances across cell membranes by what process? a Diffusion b Osmosis c Active transport 6 Diffusion involves the spreading out of particles in which states? a Liquids only b Solutions or gases c Solids only 7 In diffusion, particles move from area of high to low what? a Concentration b Mass c Temperature 8 Which substances are example of gases transported by diffusion in gas exchange? a Glucose and amino acids b Water and urea c Oxygen and carbon dioxide 9 Which waste product diffuses from cells for kidney excretion? a Urea b Glucose c Lactic acid 10 Which factors affect diffusion rate? a Color and odor b Concentration gradient, temperature, membrane surface area c Viscosity only 11 What happens to diffusion rate as the concentration difference increases? a It decreases b Stays the same c It increases 12 Higher temperature has what effect on diffusion rate? a Slower diffusion b No effect c Faster diffusion 13 Larger membrane surface area has what effect on diffusion rate? a Faster diffusion b Slower diffusion c No effect 14 Which organisms have a high surface area to volume ratio? a Multicellular organisms b Single-celled organisms c Plants only 15 Why does a greater surface area to volume ratio aid transport? a Less membrane b More surface for exchange c More water content 16 What happens to SA:V ratio as an organism grows bigger? a Rises b Remains constant c Falls (smaller) 17 Small SA:V makes rapid exchange of substances harder; true or false? a Not related b True c False 18 Name exchange surfaces in organisms. a Nerves, bones, muscles b Hair, skin, nails c Alveoli, villi, gills, root hairs 19 What increases exchange surface effectiveness? a Low blood supply b Large surface area and thin membrane c Small surface area and thick membrane 20 Osmosis is diffusion of what molecule? a Proteins b Glucose c Water 21 A dilute sugar solution has what characteristic about water and sugar? a High water, low sugar concentration b Low water, high sugar c Equal concentrations

Cells and Diffusion Quiz

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Cells and Diffusion QuizVersión en línea

por Abigail

What term describes the variable that's deliberately changed in an experiment?

Which variable is measured in an experiment?

Which variables must be kept constant in an experiment?

Precise measurements are characterized by what feature?

Diffusion can move substances across cell membranes by what process?

Diffusion involves the spreading out of particles in which states?

In diffusion, particles move from area of high to low what?

Which substances are example of gases transported by diffusion in gas exchange?

Which waste product diffuses from cells for kidney excretion?

Which factors affect diffusion rate?

What happens to diffusion rate as the concentration difference increases?

Higher temperature has what effect on diffusion rate?

Larger membrane surface area has what effect on diffusion rate?

Which organisms have a high surface area to volume ratio?

Why does a greater surface area to volume ratio aid transport?

What happens to SA:V ratio as an organism grows bigger?

Small SA:V makes rapid exchange of substances harder; true or false?

Name exchange surfaces in organisms.

What increases exchange surface effectiveness?

Osmosis is diffusion of what molecule?

A dilute sugar solution has what characteristic about water and sugar?