Bio 101 Exam 1 Study Guide Questions & Answers(RATED A+)

An irrelevant observation - ANSWERhas no bearing on the problem An improper hypothesis - ANSWERUntestable Define biology - ANSWERthe scientific study of life What are the 7 properties of life? - ANSWERorder, reproduction, growth and development, energy processing, response to the environment, regulation, evolutionary adaptation Describe the 7 properties of life - ANSWER· Order: All living things are organized. Livings things have complex but organized structures. Ex: Pedals on a flower are organized pattern · Regulation: a living thing can adjust its internal environment, keeping it within appropriate limits. Ex: humans sweat to regulate body temperature · Growth and Development: All living things will grow and develop · Energy Processing: living things take in energy and use it to perform work. Ex: energy (from food) is taken in and heat and mechanical energy is let out · Response to the Environment: living things respond to stimuli. Ex: humans have instincts such as moving away from flame or fire quickly · Reproduction: Living things must evolve over time to survive in new or different environments. Adaption: Living things must adapt to survive as their environment changes What did Robert Hooke contribute to Biology? - ANSWERRobert Hooke developed the first microscope and introduced the name "cell". What did Schleiden and Schwann contribute to Biology? - ANSWERMatthias Schleiden, "All plants are made of cells". Theodor Schwann, "All animals are made of cells". Who came up with Cell theory? - ANSWERRudolf Virchow Describe the three main tenets of the Cell Theory - ANSWER· The cell is the basic unit of all organisms (life) · All living things are made of cells · All cells come from preexisting cells Differentiate between unicellular and multicellular organisms - ANSWER- Unicellular organisms: are made of just one cell. Ex: bacteria and Amoeba Multicellular organisms: are made of multiple cells. Ex: plants and animals Which is larger? Eukaryotic or Prokaryotic - ANSWEREukaryotic Which probably evolved first? Eukaryotic or Prokaryotic - ANSWERProkaryotic What are some key differences between prokaryotic and eukaryotic? - ANSWERProkaryotic: smaller, first on planet, no nucleus, one long strand of DNA, no membrane bound organelles. Eukaryotic: larger, has a nucleus, organelles are present, DNA is in chromosomes, evolved more recently Which type of cell has only 1 chromosome in a loop? - ANSWERProkaryotes Do prokaryotes have membrane bound organelles? - ANSWERProkaryotes do not have membrane bound organelles.