APHY 101 Module 5 Exam 1 (Ch 1-4)

he body is made up of many different cell types, from small circular red blood cells to the elongated smooth muscle cells 20X its size. Why is there such variation in size and shape? A. different cell sizes are due to ...

he body is made up of many different cell types, from small circular red blood cells to the elongated smooth muscle cells 20X its size. Why is there such variation in size and shape? A. different cell sizes are due to nutritional differences B. cell size and shape does not vary among cell types C. variations in cell shape and size are due to chromosomal differences between cells D. different variations in size and shape allow differentiated cell types to perform unique functions D. different variations in size and shape allow differentiated cell types to perform unique functions Metabolism is defined as _____. A. the taking in of nutrients B. the breakdown of substances into simpler forms C. the removal of wastes produced by chemical reactions D. all the chemical reactions occurring in an organism that support life D. all the chemical reactions occurring in an organism that support life During metaphase of mitosis, chromosomes first condense and become visible when stained and viewed under a microscope. True / False False What type of chemical bond involves the sharing of a pair of electrons by two atoms in a molecule? A. hydrogen bond B. covalent bond C. ionic bond B. covalent bond What occurs during the stage of protein synthesis called translation? A. a polypeptide is built, based on mRNA base sequence. B. tRNA is produced in the nucleus. C. Complementary strands of DNA are assembled. D. mRNA is built, using DNA as a template. A. a polypeptide is built, based on mRNA base sequence Cytokinesis is the process by which the _____ of a cell divides. A. nucleus B. cytoskeleton C. cytoplasm C. cytoplasm