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The correct answer is (A). The correct answer is (A). How many electron pairs does carbon share in order to complete its valence shell? Ribosomes are responsible for polypeptide synthesis and are located both free in the cytoplasm and on the rough endoplasmic reticulum. Which structure is common to plant and animal cells? The mitochondria and chloroplasts change energy from one form to another. The hydrophilic heads are attracted to water, and therefore make up the outer part of the phospholipid bilayer. Chloroplasts convert solar energy into chemical energy to make sugar available for plant cells. Which structure is common to plant and animal cells? The correct answer is (C). Start studying AP Biology Unit 2 Test Bank (Campbell). Microtubules, microfilaments and intermediate filaments are parts of the cytoskeleton structure. The diagram is showing a plant cell (notice the cell walls). If a cell is immersed in an isotonic solution, there will be no net movement of water. Learn vocabulary, terms, and more with flashcards, games, and other study tools. These two molecules. The eukaryotic cell’s genetic functions are housed in the nucleus and carried out by the ribosomes. The two molecules shown in Figure 4.3 are best described as. The nuclear envelope, nucleolus and chromatin are all part of the nucleus. ap_biology_cell_communication_unit_test_pracitce_frq.docx: File Size: 254 kb: File Type: docx The correct answer is (B). Plasmodesmata are channels in cell walls of plant cells. Ribosomes are responsible for polypeptide synthesis and are located both free in the cytoplasm and on the rough endoplasmic reticulum. Which of the following statements best describes the carbon atoms present in all organic, How many structural isomers are possible for a substance having the molecular formula, The two molecules shown in Figure 4.1 are best described as, Shown here in Figure 4.2 are the structures of glucose and fructose. There is a net movement of solutes across membranes from an area of high concentration to an area of low concentration until they reach equilibrium. The correct answer is (A). 12th grade. Hydrophilic portion of the phospholipid bilayer, Hydrophobic portion of the phospholipid bilayer. AP Biology - official website. The AP Biology test is divided into two sections. This is essential because it call keep many harmful or dangerous substances from entering and destroying the cell while still allowing the necessary substances to enter. The smooth endoplasmic reticulum synthesizes lipids and detoxifies drugs and poisons. The correct answer is (B). Active transport involves the use of transport proteins to move solutes against a concentration gradient, which means they are pumping something (typically ions) from an area of lower concentration to an area of higher concentration. The correct answer is (D). The correct answer is (B). Once you are finished, click the button below. The correct answer is (A). If loading fails, click here to try again, Vacuole — Digestion, waste disposal, and storage, Ribosome — Synthesis of lipids, detoxification of drugs and poisons, Lysosome — Breakdown of ingested substances, damaged organelles recycled. Endocytosis is the process by which a cell takes in substances by engulfing them in new vesicles formed from the plasma membrane. Biology. You have not finished your quiz. 28 times. The mitochondria are responsible for cellular respiration. Phagocytosis is the process by which cells engulf a particle by wrapping pseudopodia around it and packaging it into vacuoles. If this activity does not load, try refreshing your browser. In other words, water will move in and out of the cell at an equal rate. Author: Kelly Riedell Title: AP Biology Exam Unit 2 Review Byron Strohm Last modified by: Kelly Riedell You have 90 minutes to complete each section, and each section will account for half of your grade. Membrane proteins are made of protein, Answer (D) describes a carbohydrate. The water molecules move from an area of high water concentration (low solute concentration) to the area of low water concentration (high solute concentration) until the solution reaches equilibrium. Thus, they both convert energy into a form that the cell can use. Q. The phosolipid bilayer of the plasma membrane allows some molecules to enter while keeping other molecules out. Golgi apparatus, endoplasmic reticulum, lysosomes, and vacuoles. The correct answer is (B). AP Biology Unit 2 Test Review DRAFT. Microtubules, microfilaments and intermediate filaments, Endoplasmic reticulum, golgi apparatus, lysosomes, and vesicles. The cytoskeleton refers to the fibers that organize activities and structures inside the cell. a … The correct answer is (D). In a hypothetical study, cells are placed in a solution of glucose in which the concentration of glucose is gradually increased. 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