Question

Movement of molecules from an area of higher concentration to one of lower concentration is called ___________________. A. osmosis B. mitosis C. diffusion D. active transport 2. (1 pt) Movement of molecules from an area of lower concentration to one of higher concentration with energy is called ___________________. A. osmosis B. mitosis C. diffusion D. active transport 3. (1 pt) Movement of water across a membrane is called ___________________. A. osmosis B. mitosis C. diffusion D. active transport 4. (1 pt) Plant cells change the sun’s energy to chemical energy during ____________. A. meiosis B. mitosis C. photosynthesis D. active transport 5. (1 pt) One way to speed up a chemical reaction is to add a _______________, which is unaffected by the reaction. A. catalyst B. surface area C. concentration D. heat 6. (1 pt) Increasing the _________________ of a reactant exposes more of it to the reaction taking place. A. catalyst B. surface area C. concentration D. heat 7. (1 pt) What is the circulatory system’s function? A. It removes cellular waste from the blood and converts it to urine. B. It exchanges carbon dioxide and oxygen in the lungs. C. It transports oxygen and nutrients to cells while removing carbon dioxide and other wastes. D. It breaks down food into usable nutrients. 8. (4 pt) Which organism belongs to the Kingdom Archaebacteria? A. halophile bacteria B. virus C. sea star D. worm 9. (4 pt) Which organism belongs to the Kingdom Eubacteria? A. thermophile bacteria B. paramecium C. cyanobacteria D. algae 10. (4 pt) Which organisms belong to the Kingdom Protista? Choose all answers that are correct. A. amoeba B. sea anemone C. beetle D. seaweed 11. (4 pt) Which organisms belong to the Kingdom Fungi? Choose all answers that are correct. A. pine tree B. mushroom C. moss D. mold 12. (4 pt) Which organisms belong to the Kingdom Planta? Choose all answers that are correct. A. moss B. lichens C. fern D. virus 13. (4 pt) Kingdom Animalia A. frog B. mushroom C. worm D. thermophile bacteria 14. (1 pt) Chemicals packed together tightly react more slowly. A. True B. False 15. (1 pt) Chemical reactions usually take place more quickly at high temperatures. A. True B. False

Answer 1

1. Diffusion refers to the procedure in which the molecules tend to move from a region of higher concentration to the region of low concentration.

2. Active transport is the process in which the energy is required for the movement of particles across a cell membrane.

3. Osmosis refers to the process of movement of water through a selectively permeable membrane from a region of high concentration to the region of low concentration.

4. Photosynthesis refers to the procedure by which green plants and some other species use sunlight to produce foods from water and carbon dioxide.

5. Catalyst refers to a substance that enhances the rate of chemical reaction without itself going through any permanent chemical modification.

6. Increasing the concentration of a reactant exposes more of it to the reaction taking place.

7. The main function of the circulatory system is to transport oxygen and nutrients to cells while removing carbon dioxide and other wastes.

8. Halophiles are the species that survive in extreme salt concentrations. They are a kind of extremophile species. The majority of the halophiles are categorized into the domain Archaea.

9. Cyanobacteria are a kind of eubacteria. Eubacteria are also called true bacteria.

10. Of the given options, seaweed and amoeba belong to the Kingdom Protista.

11. Mushroom and mold belongs to the Kingdom Fungi.

12. Moss and fern comes under the Kingdom Plantae.

13. Frog and worm comes under the Kingdom Animalia.

14. The chemicals packed together more compactly react very briskly. Thus, the given statement is False.

15. The chemical reactions generally occurs more briskly at higher temperatures. Thus, the given statement is True.