Download Semester 1 Exam Study Guide with answers

Life Science Semester 1 Summative Assessment Key
Study Guide
Wortham
2015
1. What characteristics are used to determine whether an organism belongs in the domain
Eukarya? Presence of a nucleus
2. What group includes only prokaryotes? Protist Kingdom
3. What is the maintenance of internal stable internal conditions inside an organism called?
homeostatsis
4. What are the different ways animals get food? Animals get food from other animals and the
plants they eat
5. What are the products of photosynthesis? Oxygen and water
6. What happens during photosynthesis? The cell uses energy from the sun to make food
7. If we are looking at a cell through his microscope and it has a cell wall. How can we determine
whether or not he is looking at a plant cell or a bacterium? Plant cells will have chloroplasts
8. What happens during respiration? Glucose is broken down, releasing energy
9. How are photosynthesis and respiration the same? They both produce enery How are they
different? They have opposite equations
10. What do respiration and photosynthesis do to the levels of carbon dioxide and oxygen in the
atmosphere? Keep it fairly constant
11. What is mitosis? The cell divides into 2 new cells Why is it important? It’s how cells reproduce
12. Which organelle is the control center of a cell? Nucleus
13. Which organelles store food and other materials needed by the cell? Vacuoles
14. What is the function of a cell membrane? To control what enters and leaves the cell
15. What is taxonomy? The scientific study of how living things are classified
16. What is another word for taxonomy? Classification
17. What term refers to the movement of molecules from an area of higher concentration to an area
of lower concentration? Diffusion
18. Why did Linnaeus use Latin words? Because it was the language of scientists at the time
19. Where do all cells come from, according to the cell theory? Existing cells
20. Which term refers to the diffusion of water molecules through a selectively permeable
membrane? Osmosis
21. What do we call observations that deal with a number or amount? Quantitative
22. What is prediction? Making a forecast of what will happen in the future based on past
experiences or evidence
23. What do we call it when scientists put things into categories or group together items that are
alike in some way? Classifying
24. How does oxygen get into the blood stream when we breathe? The oxygen diffuses from a level
of high concentration in the lungs to an area of low concentration in the blood stream.
25. Which human body system breaks down food and absorbs nutrients? Digestive
26. What do tools do scientists use to identify organisms? Dichotomous key and field guides
27. What is the naming system Linnaeus used to give each organism a unique name? binomial
nomenclature
28. What are tissues? Cells that perform similar functions
29. What does the term resolution refer to? How sharp an image is
30. When do cells use active transport? When a molecule is being moved against the
concentration gradient
31. What is the total magnification of a microscope with two lenses when one lens has a
magnification of 10, and the other lens has a magnification of 50? 500
32. Which human body system transports materials to and from the cells? Circulatory
33. Which level of organization of life is made up of cells that work together to perform a specific
function? Tissue
34. Which human body system fights infections by destroying invaders like bacteria and viruses?
Immune
****You will need to know how to use a classification chart to name organisms and show common
characteristics of organisms.
****You will need to know the organelles of cells and the function of the organelles.