Bio 181 Exam 1 Mcc 2024 Questions And Detailed Answers| A+ Grade

What is a polar covalent bond? {Ans: In a polar covalent bond, one atom is more electronegative, and the atoms do not share the electron equally}What is the genetic material of a cell? How is it organized in the cell? {Ans: Within the nucleus, DNA is organized into units called chromosomes, which carry genetic information. Each chromosome contains one long strand of DNA wrapped around small proteins to help wind the DNA into a smaller size to allow it to fit into the nucleus.}Free ribosomes {Ans: Free ribosomes produce proteins that are used by the cell. This includes proteins that are used for the metabolism of food. The free ribosomes produce enzymes involved in the metabolism of glucose.}What is the function of a nucleus? {Ans: The nucleus contains most of the genes within a cell.}How do actin-myosin filaments help with cell movement? {Ans: Actin filaments, usually in association with myosin, are responsible for many types of cell movements. Myosin is the prototype of a molecular motor—a protein that converts chemical energy in the form of ATP to mechanical energy, thus generating force and movement. The most striking variety of such movement is muscle contraction, which