C) amount of carbon dioxide absorbed by the animal B) rate of respiration of the animal

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1 Name: 1) A model of a section of a cell membrane is represented below Page 1 Which type of molecule is indicated by the arrow? A) carbohydrate B) protein C) lipid D) nucleotide 2) The movement of chloroplasts along the inner surface of the plasma membrane of an elodea cell is known as A) osmosis B) cyclosis C) pinocytosis D) diffusion 3) Illustrations of cells from two different organisms are shown below. Which cell feature is a part of the cells shown in illustration B, but is not a part of the cells shown in illustration A? A) nucleus B) plasma membrane C) cell wall D) cytoplasm 4) The apparatus below was designed with the understanding that animals take in oxygen and release carbon dioxide, and that ordinary air contains very little carbon dioxide. The apparatus can be used to measure the A) effect of carbon dioxide on the animal C) amount of carbon dioxide absorbed by the animal B) rate of respiration of the animal D) amount of heat prduced by the animal 5) Which inorganic substance found in living matter aids in the diffusion of gases through a cell membrane? A) phosphorus B) salt C) water D) iron 6) The passage of salts into and out of cells is most closely associated with the life process of A) reproduction B) transport C) respiration D) digestion

2 7) Which cell structure is represented by the three-dimensional diagram below? Page 2 A) chloroplast B) replicated chromosome 8) The process by which glucose is converted to starch is known as A) dehydration synthesis B) protein hydrolysis C) plasma membrane D) mitochondrion C) cellular respiration D) chemical digestion 9) The process by which large undissolved particles are brought into a cell by being engulfed is known as A) cyclosis B) hydrolysis C) osmosis D) phagocytosis 10) Which molecule will most likely diffuse through a cell membrane? A) protein B) water C) DNA D) starch 11) The arrows in the diagrams below represent the direction of movement of a certain type of molecule through the cell membrane of two different cells. The dots represent the relative concentrations of this molecule. Which processes are illustrated in the diagrams? A) pinocytosis and osmosis C) phagocytosis and diffusion B) dehydration synthesis and circulation D) active transport and diffusion 12) In plant cells, which organelle is most closely associated with aerobic respiration? A) lysosome B) chloroplast C) mitochondrion D) nucleolus 13) Which structure includes all of the others? A) nucleolus B) nucleus C) chromosomes D) genes

3 14) The diagram below shows the method of entry of a molecule too large to diffuse through the plasma membrane of a cell Page 3 The process represented in the diagram above is known as A) pinocytosis B) cyclosis C) homeostasis D) osmosis 15) Which structures are used by a paramecium for maintaining water balance? A) food vacuoles B) pseudopodia 16) The diagram below represents a mitochondrion. C) cilia D) contractile vacuoles All the arrows are associated with the process of A) photochemical reaction C) aerobic respiration B) anaerobic respiration D) carbon fixation 17) Molecules that are too large to pass through the pores of a cell membrane may enter the cell by a process known as A) pinocytosis B) synthesis C) hydrolysis D) cyclosis 18) The concentration of nitrates is often higher in plant roots than in the soil around them. Plants maintain this difference in concentration through A) diffusion B) active transport C) waste egestion D) osmosis 19) For the given statement, select the chemical activity that is best described by the statement. Polysaccharides are manufactured from simple sugar molecules. A) Aerobic respiration B) Dehydration synthesis 20) Which cellular process is illustrated in the diagram below? C) Enzymatic hydrolysis D) Anaerobic respiration A) excretion B) egestion C) pinocytosis D) hydrolysis

4 21) The diagram below represents the fluid mosaic model of a cell membrane Page 4 The molecules labeled X and Y represent a A) nucleic acid and a carbohydrate B) protein and a lipid 22) The diagram below represents an animal cell. C) nucleic acid and a lipid D) protein and a carbohydrate What is the function of structure X? A) It regulates the transport of materials. C) It produces centrioles. B) It controls the energy released in respiration. D) It synthesizes cellulose. 23) The transfer of energy from nutrients to ATP is accomplished most directly by the process of A) diffusion B) cyclosis C) glucose synthesis D) cellular respiration 24) The diagram below represents a plant cell. Which cell structure functions as a storage site for organic acid wastes? A) A B) B C) C D) D 25) After a cell was treated with a certain chemical, the ribosomes stopped functioning. Which cell activity was immediately affected by this change in ribosome function? A) aerobic respiration B) protein synthesis C) intracellular transport D) excretion of metabolic wastes

5 26) In an ameba, which process is best represented by the arrows shown in the diagram below? Page 5 A) excretion by diffusion B) respiratory gas exchange C) egestion of digestive end products D) absorption by active transport 27) Which metabolic process is most closely associated with the organelle represented in the diagram below? A) hydrolysis of lipids B) synthesis of glycogen C) intracellular digestion D) cellular respiration 28) There is a higher concentration of mineral salts within the body of a paramecium than in its external water environment. This higher concentration is maintained as a result of the action of A) ATP B) cyclosis C) pinocytosis D) CO2 29) Which process involves the transfer of energy from carbohydrates to ATP molecules? A) respiration B) cyclosis C) egestion D) photosynthesis 30) What is the site of protein synthesis in plant cells? A) nuclei B) vacuoles C) chromosomes D) ribosomes