Aphy 101 ivy tech Midterm Ch 1-6 Questions and Answers 100% Correct

Cancer can result if a)mitosis is too infrequent. b)mitosis is too frequent or does not stop. c)the cell cycle runs backward. d)the cell cycle stops. - ANSWER-mitosis is too frequent or does not stop The secondary structure of a protein molecule is the result of a)ionic bonds. b)covalent bonds. c)hydrogen bonds. d)oxygen double bonds - ANSWER-hydrogen bonds. Which of the following lists best illustrates the idea of increasing levels of complexity? a)Organelles, cells, tissues, organs, organ systems b)Cells, tissues, organelles, organs, organ systems c)Organs, organelles, organ systems, cells, tissues d)Tissues, cells, organs, organelles, organ systems - ANSWER-Organelles, cells, tissues, organs, organ systems Lipids a)are insoluble in water. b)include phospholipids, cholesterol, and fats. c)contain C, H, and O, but with proportionately less oxygen than in carbohydrates. d)all of the above. - ANSWER-all of the above. Metabolism is defined as _____. a)the removal of wastes produced by chemical reactions b)the breakdown of substances into simpler forms c)all the chemical reactions occurring in an organism that support life d)the taking in of nutrients - ANSWER-all the chemical reactions occurring in an organism that support life During interphase, a cell rests. True False - ANSWER-False Smooth endoplasmic reticulum has ribosomes and rough endoplasmic reticulum does not. True False - ANSWER-False The activities of an anatomist consist of ______, whereas those of a physiologist consist of _____. - ANSWER-observing body parts; studying functions of body parts An organic compound always contains - ANSWER-carbon and hydrogen. Which of the following substances is an element? Glucose Water Iron Sodium chloride - ANSWER-Iron Cilia and flagella extend from certain cells, enabling the cells to move. True False - ANSWER-False If the concentration of glucose in the water outside of a cell is higher than the concentration inside, - ANSWER-water will leave the cell by osmosis. Microfilaments and microtubules are part of the cytoskeleton. True False - ANSWER-True The relationship of osmotic pressure and the number of solute particles in a solution is: - ANSWER-the greater the number of solute particles, the greater the osmotic pressure. Stages of the cell cycle unfold in the following order: - ANSWER-interphase, mitosis, cytoplasmic division, differentiation The atoms of the isotopes of a particular element vary in the number of - ANSWER-neutrons. When the body is placed in the anatomical position, which of the following is not true? The head is facing to the front. The upper limbs are at the sides. The body is erect. The palms are facing backward. - ANSWER-The palms are facing backward. A cell that can divide to give rise to any cell type is - ANSWER-totipotent. Which of the following groups of compounds is hydrophobic? Carbohydrates