Direction: Encircle the letter of the correct answer. 1. Controls the sum of light coming to the specimen 4D. Diaphragm C. Nosepiece B. Base A Objectives 2. It projects light through the diaphragm D. Arm C. Tube A Stage clips B. Light source 3. The level platform where you put your slides D. Stage C. Base A Am B. Diaphragm 4. Hold the slide/specimen in place D. Stage clip C. Stage A Eyepiece B. Nosepiece 5. Supports upper part of the microscope D. Base A Light source C. Diaphragm B. Arm 6. Connects the eyepiece to the objective lenses A Eyepiece B. Stage D. Tube C. Diaphragm 7. Holds two or more objective lenses and can be rotated to change power A Nosepiece B. Tube C. Diaphragm D. Base 8. It is the layer of the planet Earth where life exists, what is it? A Biosphere B. Cell C. Molecule D. Population 9. Which structure is the simplest level of organism in humans? A Biosphere B. Cell C. Ecosystem D. Population 10. Gilbert is going out to his grandparents' farm. On the farm is a stream that he likes to fish at. When he is fishing, he sees many different species of fish as well as mahogany and coconut trees and dragonflies. What Gilbert is seeing is an example of what level of organization? A Community B. Ecosystem 11. Which level of biological organization is composed of the smallest unit of chemical C. Organism D. Population elements? A Biosphere B. Cell 12. Which of the following is an example of an organ system? C. Molecules D. Organism A Brain 13. It is a group of organisms of one type that live in the same area. What level of C. Heart D. Liver biological organization is this? A. Biosphere B. Circulatory B. Community C. Ecosystem D. Population 14. Which of the following is an example of organism? C. Nervous system D. Cat A. Species in a pond B. Kidney 15. Human skin tissue and connective tissue are examples of what level of biological organization? B. Molecules C. Organs A Cells D. Tissues 16. An organelle which can only be found in animal cells. A centrioles B. chloroplasts C. cell wall D. nucleus 17. The plant's chloroplasts are damaged, which is likely to happen? A. It cannot protect the plants. C. It cannot make food for the plant B. It cannot reproduce. D. It cannot excrete waste products. 18. Addie is asked to identify an unknown slide, which of the following can help him to say that it is a plant cell? L. irregular shape III. Chloroplasts are visible II. presence of centrioles IV. Angular and rigid shape A I, II, and III B. II, III, IV and V 19. Which of the following organelles is not found in onion's cell? D. III, IV and V A mitochondrion B. vacuole C. centrioles D. nucleus C. IV only​
