Bio 252 - Study guides, Class notes & Summaries

negative regulation for the lac operon when ~ see a repressor positive regulation in lac operon when ~ camp cap what are camp cap and where to they bind? activator/repressor? trans/cis? pos/neg regulation? ~ operon, initiate transcription in absence of glucose. they are an activator. trans. and positive regulation restriction sites in normal genes ~ don't have them naturally, added through primers via PCR Predict what would happen if you swapped the location of the promoter and th...

Bio 252 Exam 3 Questions and Answers

Emergency contraception (plan B) is the same as abortion because an implanted embryo can become dislodged ~ False 41. Herbs and supplements can enhance the male erection. ~ False 42. Healthy diet and regular exercise can prolong years of female fertility ~ False 43. Vaseline is an effective contraceptive if you don't have anything else around. ~ False 44. Because there's no ovulation when hormonal contraceptives are used, a woman's eggs are basically 'frozen' within the ovaries ...

Bio 252 Exam 3 with correct Answers

Bio 252 Exam 3 Questions and Answers

Muscle Tissue Property: Electrical Excitability - Answer-ions are charged molecules that have different concentrations between a semipermeable membrane Muscular Tissue Property: Contractility - Answer-the ability to forcefully contract Muscular Tissue Property: Extensibility - Answer-the ability to stretch Muscular Tissue Property: Elasticity - Answer-the ability to return to your original shape Microscopic Anatomy of a Skeletal Muscle Fiber - Answer--each mature skeletal muscle fiber has ...

Bio 252 Exam 3 with correct Answers

BIO 252 - EXAM 1 STUDY GUIDE-PART 1 /BIO 252 - EXAM 1 STUDY GUIDE-PART 1

pulmonary circuit - ANSWER The right side of the heart receives deoxygenated blood from the tissues and pumps it to the lungs through the pulmonary circuit Systemic circuit - ANSWER Receives oxygenated blood from the lungs and pumps it to the tissues via the systemic circuit Heart size and location - ANSWER Size of a persons fist located in the mediastinum between 2nd rib and 5th intercostal space, apex sits on the diaphragm 2/3 of the mass is left of center Anterior to the vertebral colu...

long bones - ANSWER bones of the arms and legs (longer then they are wide) Diaphysis - ANSWER shaft of a long bone Periosteum - ANSWER A dense fibrous membrane covering the surface of bones (except at their extremities) and serving as an attachment for tendons and muscles. compact bone - ANSWER dense, hard layers of bone tissue that lie underneath the periosteum (in diaphysis). Densely packed osteons marrow cavity - ANSWER space in the diaphysis of a long bone that contains bone marr...