Bio 111 Exam 1 University of Michigan-Flint 2023 latest updated

What is the smallest unit of life that can survive and reproduce on its own? - A cell What statement about cells is part of the cell theory? - All cells come from preexisting cells A theory is... - an explanatory idea that is broad in scope and supported by a large body of evidence When applying the process of science, which of these is tested? - A hypothesis What does the process of science do? - Presents the best answer given the collected evidence Why is each element unique and different from other elements with respect to its chemical properties? - each element has a unique number of protons The nucleus of an atom contains... - protons and neutrons One difference between the isotopes carbon-12 and carbon-14 is that carbon-14 has... - two more neutrons than carbon-12 Electrons exist only at fixed levels of potential energy. However, if an atom absorbs sufficient energy, a possible result is that... - an electron may move to an electron shell farther away from the nucleus In an atom, what is the max number of electrons the first electron shell nearest to the nucleus can hold? - 2