American Military University SCIN 130 Quiz 3 answered and graded 100% points; 2021

Quiz 3 Part 1 of 8 - Chapter 3 18.0 Points Question 1 of 31 3.0 Points Which is the only substance involved in osmosis?  A. alcohol  B. salt  C. sugar  D. water Feedback:Great job. Question 2 of 31 3.0 Points What are the network of protein fibers that help maintain the shape of the cell referred to as? A. vacuole  B. plasma membrane  C. cytoplasm  D. lysosome  E. cytoskeleton Feedback:Great job. Question 3 of 31 3.0 Points Which is the animal cell’s garbage disposal?  A. endoplasmic reticulum B. vacuoles  C. Golgi apparatus  D. lysosomes  E. nucleus Feedback:Great job. Question 4 of 31 3.0 Points Which model best describes the observations and functions of the plasma membrane?  A. nuclear envelope  B. fluid mosaic model C. cell membrane  D. phospholipid bilayer Feedback:Great job. Question 5 of 31 3.0 Points One feature of a eukaryote that is not found in a prokaryote includes what?  A. a plasma membrane  B. membrane-bound organelles  C. cytoplasm  D. DNA E. ribosomes Feedback:Great job. Question 6 of 31 3.0 Points The unified cell theory includes all of the following EXCEPT?  A. All living things are composed of one or more cells  B. Cells eat each other to reproduce  C. All new cells arise from existing cells  D. That the cell is the basic unit of life Feedback:Great job. Part 2 of 8 - Chapter 4 18.0 Points Question 7 of 313.0 Points Rubisco is involved in photosynthesis, and helps to speed up the reaction from carbon dioxide to water. What is the generic term for rubisco?  A. exergonic  B. enzyme  C. substrate  D. endergonic Feedback:Great job. Question 8 of 31 3.0 Points What is the first step in the breakdown of glucose to extract energy for cell metabolism?  A. gluconeogenesis B. TCA cycle  C. photosynthesis  D. glycolysis Feedback:Great job. Question 9 of 31 3.0 Points Reactions that release free energy are called what?  A. kinetic  B. potential  C. exergonic D. endergonic Feedback:Great job. Question 10 of 31 3.0 Points If a molecule binds to an active site in an enzyme, but it is not involved in the reaction and is simply slowing it down, what is it called?  A. competitive inhibition  B. enzyme  C. substrate  D. active site Feedback:Inhibition occurs when a molecule binds to the active site in the enzyme. Review energy and metabolism in Chapter 4. Question 11 of 313.0 Points Why can’t cells store extra free energy?  A. it would result in an increase of heat, which would denature enzymes  B. it would result in a lowering of heat, which would freeze the cells  C. it would result in a lack of space, which would keep out other molecules  D. they can store free energy, which is why we are able to survive Feedback:Great job. Question 12 of 31 3.0 Points What is the term for when an activator binds to an enzyme, which alters the active site so that the substrate is able to bind?  A. competitive inhibition B. allosteric inhibition  C. active site  D. allosteric activation Feedback:Activation occurs when an enzyme is turned on, and can occur using an alternate site. Review energy and metabolism in Chapter 4. Part 3 of 8 - Chapter 5 18.0 Points Question 13 of 31 3.0 Points Why do plants use carbohydrates to store their energy instead of ATP?  A. Carbohydrates are not found in plants and are not used.  B. Carbohydrates are smaller and easier to maintain. C. Carbohydrates are organized in a linear fashion.  D. Carbohydrates are more stable and efficient reservoirs. Feedback:While ATP is produced and is a good molecule to store energy, it is not stable or efficient. Review the energy cycle in Chapter 5. Question 14 of 31 3.0 Points Carbon fixation in plants is catalyzed by what enzyme?  A. Ribulose Bisphosphate  B. NADPH  C. RuBisCo D. Carbon Dioxide  E. ATP Feedback:Great work! Question 15 of 31 3.0 Points What are the two main byproducts of cellular respiration?  A. Carbon Dioxide and Water  B. Glucose and Oxygen  C. Glucose and Carbon Dioxide  D. Carbon Dioxide and Oxygen E. Oxygen and Water Feedback:Great job! Question 16 of 31 3.0 Points There are three stages in the Calvin cycle; what are they in the proper order?  A. Reduction, Carbon Fixation, Loss of RuBP  B. Reduction, Loss of chlorophyll, Carotenoids  C. Loss of chlorophyll, Regeneration of RuBP, Reduction  D. Carbon Fixation, Reduction, Regeneration of RuBP Feedback:Great job! Question 17 of 31 3.0 Points What is the purpose of the light-dependent reactions of photosynthesis? A. To convert chemical energy into light energy.  B. To convert light energy into color.  C. To convert light energy into chemical energy.  D. To convert chemical energy into color. Feedback:Great job! Question 18 of 31 3.0 Points During the light-dependent reactions of photosynthesis, where does the oxygen come from?  A. the hydrolysis of glucose  B. the hydrolysis of water C. the loss of sugar  D. the loss of pigment Feedback:Great job! Part 4 of 8 - Lecture ELF 9.0 Points Question 19 of 31 3.0 Points What is the vacuole in plant cells?  A. space in the middle of plant cells that contains water and macromolecule storage  B. it plays a role in capturing the energy of the sun to create carbohydrates or sugar  C. it is found in side the nucleus, and makes ribosomes D. it is the site of RNA synthesis, and DNA storage  E. it plays a role in the packaging and shipping of protein products Feedback:The vacuole is a very large storage organelle in plants, consisting mostly of water. Review Eukaryotic Cells in the Weekly Lecture Lesson. Question 20 of 31 3.0 Points What is the result of mitosis?  A. Two cells become four non-identical cells  B. One cell becomes two non-identical cells  C. Two cells become four identical cells  D. One cell becomes two identical cells Feedback:Great job!Question 21 of 31 3.0 Points Which part of the cell cycle does a cell spend the majority of its time?  A. Meiosis  B. Interphase  C. Mitosis  D. Metaphase  E. Telophase Feedback:Great job! Part 5 of 8 - Lab Material 15.0 Points Question 22 of 31 3.0 Points The loss of stickleback pelvic spines is similar to the loss of which body parts in some other four-legged vertebrates? A. fins  B. hind limbs  C. gills  D. divergent thumbs Feedback:Great. Question 23 of 31 3.0 Points After your fish samples are stained, and then destained, what solution are they stored in?  A. Alizarin Red  B. They are allowed to dry C. 50% Isopropyl Alcohol  D. Water Feedback:Great. Question 24 of 31 3.0 Points The pelvic spines in the stickleback are modified what?  A. fins  B. legs  C. gills  D. limbsFeedback:Review Lab 3: Stickleback Evolution, Part 1 Question 25 of 31 3.0 Points What type of stain did we use for the fish?  A. Reticulin Stain  B. Alizarin Red  C. Acid Fuschin  D. Toluidine Blue Feedback:Review Lab 3: Stickleback Evolution, Part 1 Question 26 of 31 3.0 Points What is the purpose of the pelvic spines in stickleback? A. To make copulation easier for the female  B. To aid in swimming quickly through the ocean water  C. To make it more difficult for predators to swallow them  D. To slow down when swimming through lots of seaweed Feedback:Great. Part 6 of 8 - Part 3: Lab ELF 9.0 Points Question 27 of 31 3.0 Points A hypothesis should suggest a relationship between what two variables the researcher will test?  A. dependent and inductive  B. deductive and inductive C. dependent and independent  D. independent and deductive Feedback:There should be a link in the hypothesis between the variable that you are changing, and another that will be observed. Review the Characteristics of an Effective Hypothesis in the Lab Lesson Content. Question 28 of 31 3.0 Points Which is a properly written hypothesis?  A. The rose will grow tomorrow with sunlight.  B. If we take a rose outside and leave it, I think the sun will help it grow.  C. Roses will grow larger if given proper sunlight and nutrients. D. I believe that increased sunlight and nutrients will allow roses to grow larger. Feedback:Remember, a hypothesis should fit into the general if-then format, even if it is not written exactly in those words. Also, there should not be any personal opinion in a hypothesis. Review the Characteristics of an Effective Hypothesis in the Lab Lesson Content. Question 29 of 31 3.0 Points What is said of the hypothesis if the data gathered in an experiment is what is anticipated?  A. disproven  B. rejected  C. supported  D. proven Feedback:Correct! The scientific method cannot prove or disprove a hypothesis directly. Part 7 of 8 - Lab Essay 5.0 Points Question 30 of 31 5.0 PointsIn 2-3 sentences, what was the overall purpose of the lab for this week? The overall purpose of the lab this week was to learn more about stickleback fish. Understanding why some have pelvis and some don't What is said of the hypothesis if the data gathered in an experiment is what is anticipated? and don't. How the population of the with pelvic has decreased. Also, how to tell the difference between one with a complete, reduced, or absent pelvic. Comment:Great! We can observe natural selection causing changes within a species in response to predation. These are the same changes that can eventually lead to new species. Part 8 of 8 - Lab Upload 8.0 Points Question 31 of 31 8.0 Points Please upload your completed Lab Packet for this week. Make sure your name is on the top in the space provided.