Science7: Cells- The Basic Unit of Life (Ch. 4)

Name: Date: Period:

I. Using Science Skills For items 1-8, use the diagram of the ANIMAL CELL below to identify the parts of the cell from the list provided. Fill in the correct letter or letters on your scantron. If the answer is “a” fill in “a”, if the answer is “ab” fill in “a” and “b” on the SAME line!

a. Nucleus b. Rough Endoplasmic Reticulum c. Smooth Endoplasmic Reticulum d. Nucleolus e. Ribosomes ab. Nuclear Membrane ac. Golgi complex ad. Chromosomes ae. Cell membrane bd. Lysosome be. Mitochondria cd. Cytoplasm

II. Match each word with its definition Fill in the letter of the correct answer on the scantron. 9. Cell A. Deoxyribonucleic acid is the genetic material that carries information. 10. DNA B. The basic unit of structure and function in all living things. 11. Golgi body C. The energy source of the cell; provides ATP. 12. Cell wall D. Provides strength and protection to a plant cell. 13. Nucleus E. Carries materials from one part of the cell to the other through a maze like structure. 14. Mitochondria AB. Parts of a cell that perform a function. 15. Chloroplast AC. The control center of the cell. The Brain 16. Chromatin AD. The cell’s “mailroom”. Packages and distributes materials throughout the cell. 17. Endoplasmic reticulum AE. Carries the genetic material and forms chromosomes. 18. Organelle BC. Provides green color to a plant III. Multiple Choice Fill in the letter of the correct answer on the scantron. 19. The smallest structural and functional unit of all living things is a(n) a. Atom c. nucleus b. Organelle d. cell 20. Where do cells come from? a. Organelles c. animacules b. other cells d. blood 21. Plant cells are supported by a rigid structure that surrounds the cell membrane called a a. Golgi complex c. cell wall b. Cytoskeleton d. ribosome 22. In plant and bacterial cells, photosynthesis takes place in a. Chlorophyll c. ribosomes b. Chloroplasts d. the nucleus 23. The protective barrier surrounding the animal cell, which protects its contents from the cell’s environment, is the a. Cytoskeleton c. cell membrane b. cell wall d. central vacuole 24. In plants, the vesicle that stores water and liquids and helps support the cell is called the a. large central vacuole c. large central vesicle b. endoplasmic reticulum d. lysosome 25. A group of cells working together to perform the same function makes up a(n) a. organism c. tissue b. organ system d. structure 26. An organ consists of a. two or more tissues c. two or more systems b. a group of cells d. nerve and muscles 27. DNA is found in what structure in the nucleus? a. Chromatin c. centromere b. Chromosome d. nucleolus 28. Chromosomes are made up of what? a. one chromatin and one centromere b. one chromatin and two centromeres c. two chromatins and one centromere d. two chromatins and two centromeres 29. An organ system has a. only one kind of tissue c. two or more organs b. two or more functions d. only one type of cell 30. How many cells are needed for a unicellular organism to perform all necessary life functions? a. One c. thousands b. Two d. trillions 31. The activity a cell performs is its a. Structure c. function b. System d. differentiation 32. The parts of an organism are arranged in a(n) a. Structure c. function b. System d. organ 33. According to the cell theory, what makes up all living things? a. only one cell c. more than one cell b. one or more cells d. a system of cells 34. Where is DNA stored in the eukaryotic cell? a. in the cytoplasm c. in the ribosome b. in the nucleus d. in the lysosome 35. The fluid inside every cell, and almost all of the cells contents, is called the a. Nucleus c. organelles b. Membrane d. cytoplasm 36. According to the cell theory a. most organisms are made up of cells b. some cells are not in an organism c. cells come from existing cells d. only animals are made up of cells 37. A cell with a membrane-bound nucleus is a. Unicellular c. prokaryotic b. Multicellular d. eukaryotic 38. A eukaryotic cells ability to differentiate to become specialized cells helps tissues, organs, and systems a. grow large in size c. work more efficiently b. produce larger cells d. stay healthy 39. Prokaryotes are different from eukaryotes because they contain a. no nucleus and a flagellum b. a nucleus and a flagellum c. no nucleus and a cell wall d. a nucleus and a flagellum 40. Proteins are made from amino acids in the smallest organelle, which is called a(n) a. Mitochondria c. ribosome b. Lysosome d. chloroplast 41. A network of protein in the cytoplasm of some cells, which defines the shape of animal cells, is called the a. Cell wall c. Golgi complex b. Cytoskeleton d. nucleus 42. The plant organelle where photosynthesis occurs is a(n) a. Mitochondria c. ribosome b. Lysosome d. chloroplast 43. Digestive enzymes are released, that destroy worn-out organelles and get rid of waste materials from the a. Cytoskeleton c. ribosome b. Lysosome d. Golgi complex 44. In prokaryotic cells, DNA is stored in the a. cytoplasm c. Golgi complex b. cytoskeleton d. nucleus 45. A group of organs with a specific job inside the body are called a(n) a. Organism c. cell b. Organ d. organ system 46. Maze like structure that contains ribosomes is called the a. Rough endoplasmic reticulum b. Smooth endoplasmic reticulum c. Rough Golgi complex d. Smooth Golgi complex 47. The nucleus is surrounded by a. The cell membrane c. The endoplasmic reticulum b. The nuclear membrane d. The Golgi complex 48. Which organelle is NOT found in the plant cell? a. Cell wall c. mitochondria b. Lysosome d. vacuole 49. Which organelle is NOT found in the animal cell? a. Cell membrane c. Golgi complex b. Nucleus d. chloroplast 50. The nucleolus contains a. Ribosomes c. nucleic acid b. Chromosome d. DNA

EXTRA CREDIT – 3 Points Identify the parts of the PLANT CELL. a. cell wall b. chloroplast c. nucleus d. endoplasmic reticulum e. Golgi complex ab. Cell membrane ac. Cytoplasm ad. Mitochondria

GOOD LUCK 