Unit 2 AP BIO EXAM REVIEW Exam Questions with 100% Correct Answers

TOPIC 2.1 Cell Structure: Subcellular Components Correct Answer ENDURING UNDERSTANDING: Living systems are organized in a hierarchy of structural levels that interact. LEARNING OBJECTIVE SYI-1.D Describe the structure and/ or function of subcellular components and organelles. ESSENTIAL KNOWLEDGE SYI-1.D.1 Ribosomes comprise ribosomal RNA (rRNA) and protein. Ribosomes synthesize protein according to mRNA sequence. SYI-1.D.2 Ribosomes are found in all forms of life, reflecting the common ancestry of all known life. SYI-1.D.3 Endoplasmic reticulum (ER) occurs in two forms—smooth and rough. Rough ER is associated with membrane-bound ribosomes— a. Rough ER compartmentalizes the cell. b. Smooth ER functions include detoxification and lipid synthesis. X Specific functions of the smooth ER in specialized cells are beyond the scope of the AP Exam SYI-1.D.4 The Golgi complex is a membrane-bound structure that consists of a series of flattened membrane sacs— a. Functions of the Golgi include the correct folding and chemical modification of newly synthesized proteins and packaging for protein trafficking. ILLUSTRATIVE EXAMPLE § Glycosylation and other chemical modifications of proteins that take place within the Golgi and determine protein function or targeting X The role of the Golgi in the synthesis of specific phospholipids and the packaging of specific enzymes for lysosomes, peroxisomes, and secretory vesicles are beyond the scope of the AP Exam. b. Mitochondria have a double membrane. The outer membrane is smooth but the inner membrane is highly convoluted, forming folds c. Lysosomes are membrane-enclosed sacs that contain hydrolytic enzymes. d. A vacuole is a membrane-bound sac that plays many and differing roles. In plants, a specialized large vacuole serves multiple functions. e. Chloroplasts are specialized organelles that are found in photosynthetic algae and plants. Chloroplasts have a double outer membrane. Ribosomes Correct Answer Object: fast food place Explanation: b/e it pumps out protiens