Grade 8 Science 3rd Quarter

Republic of the Philippines Nueva Ecija University of Science and Technology Fort Magsaysay Campus, Palayan City THIRD QUARTER TEST IN GRADE 8 SCIENCE Name:________________________ Year/ Section:__________________

Score:____________ Date:_____________

TEST I – A. Read the list of words in the box, and choose the word that best answer each statements given below. All answers must be written on the blanks provided before each number.

Cholesterol

chyme

constipation

deglutition

diabetes

Malnutrition

endoscope

peristalsis

enzymes

esophagus

Gastroenterology

sphincter

diarrhea

substrate

lacteals

stomach

appendicitis

roughage

excretion

bile

________________1. Inflammation of the appendix. ________________2. Refers to the indigestible constituents of food materials such as cellulose. ________________3. Is a disease that develops due to excessive sugar in the blood. ________________4. It deals with the study of the digestive system and its diseases. ________________5. A flexible viewing tube with a light source and camera used to examine the internal structures of the digestive tube. ________________6. The mass of partly digested food which moves from the stomach to the duodenum of the small intestine. ________________7. Lymphatic vessels found in the villi of the small intestine. ________________8. A condition wherein a person does not get the proper amount of nutrients his or her body needs. ________________9. A lipid produced by the liver and obtained from food which can be caused cardiovascular complications in high level. ________________10. The saclike, most expanded portion of the food tube. ________________11. Substance released by the liver that emulsifies fat. ________________12. Proteins produced within living organisms that speeds up specific chemical reactions without being used up during the process. Examples of these are amylase and lipase. ________________13. A ring-like muscle that controls contraction of the anus. ________________14. The material upon which an enzyme acts. ________________15. The process of eliminating indigestible substances and certain wastes through the anus. ________________16. Refers to irregular or infrequent defecation characterized by dry feces or stool. ________________17. Moist, muscular tube that connects the pharynx to the stomach. ________________18. The act of swallowing food. ________________19. This digestive disorder refers to frequent watery fecal excretion. ________________20. Wave-like contraction of the muscular food tube. B. Identify what specific phase of the cell cycle is being described. Write only the letter of the correct answer on the blanks provided. A. G1 phase D. Prophase G. Telophase B. G2 phase E. Metaphase H. Cytokinesis . C. S phase F. Anaphase ____1. Centriole moves apart. ____2. Centriole reproduction in animal cell. ____3. Centromeres splitted ____4. Chromosomes aligned at the equator of the cell. ____5.cytokinesis starts. ____6. DNA replication. ____7. Growth of the cell. ____8. Nucleolus reappears. ____9. Migration phase ____10. Thickest and shortest chromosomes.

____11. Preparation phase. ____12. Chromosomes reach the opposite poles of the cell ____13. Spindle fibers begins to form ____14. Longest phase of mitosis. ____15. Division of the cytoplasm

TEST II- Match the following cytoplasmic organelles and structures of the cell listed in column B with its corresponding functions/ descriptions given in column A. Write only the letter of your choice on the space provided. (15 pts.) Column A Column B ___1. control center of the cell a. cilia ___2. powerhouse of the cell b. ribosome ___3. numerous hair like structures found in cell c. centriole ___4. minute fingerlike projections of the cell membrane d. mitochondria ___5. protoplasm outside the nucleus e. chromosome ___6. network of membrane enclosed canals in the cytoplasm f. nucleus ___7. small dark bodies around the nucleus g. nucleolus ___8. involve in the modification and packaging of proteins h. nuclear membrane ___9. suicide bags of the cell i. plasma membrane ___10. organelles that contains pigments in plant cells j. lysosome ___11. membrane enclosed cavities filled with fluid k. vacoules ___12. structure that encloses the nucleus l. golgi bodies ___13. dark stained bodies which are visible when the cell is m. E. reticulum not dividing. n. plastids ___14. carriers of hereditary traits o. cytoplasm ___15. encloses and protects the entire cell p. microvilli q. pinocytic vesicles TEST III – Label the parts of the following diagrams given below. Write your answers on the blanks provided.

“Just believe in yourself. Even if you don’t, pretend that you do and, at some point, you will.” – Venus Williams Prepared by: Sir GAQ