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Topic 1 RE- TEST
1. If a human system fails to function properly, what is the most likely result?
(1) a stable rate of metabolism
(2) a disturbance in homeostasis
(3) ) a change in the function of DNA
(4 a change in the method of cellular respiration
2. In the 19th century, a French scientist wrote, "All vital mechanisms, however varied they
may be, have one object, that of preserving constant conditions of life in their internal
environment." Today this concept is referred to as
(1) movement
(2) homeostasis
(3) transport
(4) reproduction
3. The diagram below represents levels of organization in living
things.
Which term would best represent X?
(1) human
(2) organelle (3) stomach (4) tissue
4. In plants, simple sugars are least likely to be
(1) stored in the form of starch molecules
(2) linked together to form proteins
(3) used as a source of energy
(4) broken down into carbon dioxide and water
5 . Which row in the chart below best describes the active transport of molecule X through a
cell membrane?
6. Light energy is converted to chemical bond energy in organelles called
(1) ribosomes
(2) mitochondria
(3) vacuoles
(4) chloroplasts
7. Gland A secretes hormone A, that stimulates (causes) gland B to release hormone B.
As the level of hormone B in the blood increases, the level of hormone A decreases. This is an
example of
(1) feedback
(2) excretion
(3) enzyme action
(4) active transport
8. Which sequence of terms represents a decrease from the greatest number of cells to least
number of cells present?
(1) organ tissue  organism
(2) organism  organ  tissue
(3) tissue  organ  organ system
(4) tissue organism organ system
9. A new animal species is discovered. It is like all other animal species in that the smallest
structure that carries on basic life functions is
(1) a system
(2) ) a tissue
(3) an organ
(4) a cell
10. Cellular communication is illustrated in the diagram below.
Information can be sent from
(1) cell A to cell B because cell B is able to receive signal 1
(2) cell A to cell B because cell A is able to receive signal 2
(3) cell B to cell A because cell B is able to receive signal 2
(4) cell B to cell A because cell A is able to receive signal 1
11. The root-like structures of fungi penetrate a source of food, secrete enzymes, and absorb
the end products.
These activities are all involved in the process of
(1) photosynthesis
(2) coordination
(3) digestion
(4) excretion
12. In the diagram below, which structure performs a function similar to a function of the
human lungs?
(1) 1
(2) 2 (3) 3 (4) 4
13. In the illustration below, a food particle is moved across the cell membrane from the
external environment. Another function of the cell membrane is
(1) digestion of food
(2) making protein
(3) releasing energy
(4) removal of wastes
14. Active transport is different from diffusion in that active transport involves
(1) the movement of molecules from high concentration to low concentration
(2) the use of energy
(3) the use of ribosomes
(4) a process that occurs only in the cells of simple plants and animals
15. Which letter in the diagram below indicates an organelle that functions primarily in the
synthesis of a protein?
(1) A
(2) B
(3) C
(4) D
16. In the diagram of a single-celled organism shown below, the arrows indicate various
activities taking place.
Which systems perform these same activities in humans?
(1) digestive, circulatory, and immune
(2) excretory, respiratory, and reproductive
(3) respiratory, excretory, and digestive
(4) respiratory, nervous, and endocrine
17. Communication between cells is affected if there is decreased ability to produce
(1) digestive enzymes and gametes
(2) antibodies and chloroplasts
(3) hormones and nerve impulses
(4) antibiotics and guard cell
18. Organ systems of the human body interact to maintain a balanced internal environment. As
blood flows through certain organs of the body, the composition of the blood changes because
of interactions with those organs. State one change in the composition of the blood as it flows
through the respiratory system. [1]
19-22
Just like complex organisms, cells are able to survive by coordinating various activities. Complex
organisms have a variety of systems, and cells have a variety of organelles that work together
for survival. Describe the roles of two organelles. In your answer be sure to include:
• the names of two organelles and the function of each [2]
• an explanation of how these two organelles work together [1]
• the name of an organelle and the name of a system in the human body that have similar
functions [1]
23-25
Describe one example of diffusion in the lungs of human body. In your description be sure to:
• identify the lung part where diffusion takes place [1]
• Identify a substance that diffuses there [1]
• identify where that substance diffuses from and where it diffuses to [1]