ECPI Final Exam Bio 112 Questions And Answers With Verified Study Solutions

Osmosis is the movement of - Answer-water through a selectively permeable membrane down its concentration gradient The ability of an organism to sense and react to changes in its body illustrates - Answer-responsiveness In negative feedback mechanisms, changes away from the normal state - Answer-stimulate changes in the opposite direction to restore normal levels Which of the following are living organisms simplest unit? - Answer-cells An organic compound always contains - Answer-carbon and hydrogen What best describes the function of the skeletal system? - Answer-support and movement Part of the cell cycle when DNA replicates: - Answer-Interphase DNA - Answer-stores genetic information, including instructions for enzymes that synthesize fats and carbohydrates An atom is electrically neutral when - Answer-the number of electrons equals the number of protons Homeostasis is the - Answer-tendency of the body to maintain a stable internal enviroment Which of the following lists best illustrates the idea of increasing levels of complexity? - Answerorganelles, cells, tissues, organs, organ systems An ion can be described as - Answer-an electrically charged particleA sagittal section divides the body into - Answer-right and left portions the cell membrane is said to be: - Answer-selectively permeable Which of the following must the human body obtain from the environment in order to survive? - Answer-water Loose thread like strands of DNA and protein: - Answer-Chromatin Which of the following is the most abundant inorganic substance in the body? - Answer-Water What is the purpose of mitosis? - Answer-Division of the cell nucleus Cytoplasm consists of - Answer-Cytosol and organelles What is necrosis? - Answer-Cell death that occurs due to tissue damage The organelle is a "tail" used for locomotion in cells such as bacteria or sperm - Answer-flagella This organelle is a network of interconnected membranes and acts like the cell's factory; forming sacs and canals that synthesizes protein and lipid molecules - Answer-endoplasmic reticulum The midportion of the abdomen is called the _________ region - Answer-umbilical In a covalent bond - Answer-atoms share a pair or more of electrons Phase of mitosis when new nuclear envelopes form around the two new nuclei and chromosomes unwind back to chromatin - Answer-TelophaseThe activities of an anatomist consist of _________, whereas those of a physiologist consist of ________ - Answer-observing the structure of body parts; studying the functions of body parts An isotonic solution - Answer-has the same osmotic pressure as the cells in the solution Phase of mitosis when the chromosomes line up in the middle of the cell: - Answer-Metaphase Which of the following illustrates a positive feedback mechanism? - Answer-Uterine contractions during childbirth The formula H2O refers to - Answer-an inorganic molecule In a ________ solution, cells swell and may burst - Answer-Hypotonic "Powerhouse" of the cell that makes a lot of ATP: - Answer-Mitochondria Stages of the cell cycle unfold in the following order: - Answer-interphase, mitosis, cytoplasmic division, differentiation tara discovers a rapidly growing lump that doubles in size over a month. A doctor does a biopsy and discovers it's a form of cancer, which can result if - Answer-mitosis/ cell division is too frequent Each of the following are examples of a lipid-based molecule except for: - Answer-protein The atomic number of an atom equals the number of - Answer-protons The fingertips are _______ in relationship to the wrist - Answer-distal to What is the chemical symbol for sodium? - Answer-NaWhich structure is found in the axial portion of the body? - Answer-Head Which subatomic particle has a negative charge? - Answer-electron In a _______ solution, cells shrink and shrivel - Answer-hypertonic Programmed cell death occurs during development, including the removal of webbing between fingers of the fetus. This process is known as - Answer-apoptosis In a _______ solution, cells swell and may burst - Answer-hypotonic Has ribosomes on its membranes and is involved with protein synthesis: - Answer-rough endoplasmic reticulum Stomach acid is considered a strongly acidic. Which pH value is it likely to have? - Answer-2 An atom is made up of - Answer-all the answers are correct: neutrons, electrons, protons Phase of mitosis when the nuclear envelope starts to disappear and chromatin condenses into highly visible chromosomes: - Answer-Prophase In Phagocytosis - Answer-a cell membrane engulfs solid particles (cell eating) Contains enzymes that synthesize lipids and carbohydrate: - Answer-smooth endoplasmic reticulum Which of the following statements are true regarding DNA and RNA? - Answer-DNA holds genetic information and RNA uses that information to synthesize protein Bones of a synovial joint are held together by - Answer-a joint capsuleGreg trips over a toy and experiences a sharp pain. His physician diagnosis a torn meniscus. Greg has injured his - Answer-knee joint The folded sarcolemma at the neuromuscular junction that has receptors for neurotransmitters: - Answer-motor end-plate Major cause of muscle fatigue - Answer-Lactic Acid Connective tissue layer that immediately surrounds individual skeletal muscle fibers - AnswerEndomysium Definition of a motor unit: - Answer-One motor neuron and all the muscle fibers it controls Invagination of the sarcolemma that helps to internalize the muscle impulse: - Answer-T-tubule Joints - Answer-enable body parts to move