BIO 181 exam 2 part 1 (GRADED A+) Questions and Answer Solutions | 100% Guaranteed Pass

Uridine is a nucleotide in DNA. True Correct! False Good work Replication of DNA is semi-conservative. Correct! True False Good work The DNA polymerase that replicates the parental strand of DNA reads the parental DNA from 5’ to 3' and makes a new DNA strand from 3’ to 5’. True Correct! False Good work DNA replication in eukaryotes is sped up by multiple origins of replication. Correct! True False Good work Messenger RNA is double stranded. True Correct! False Good work The genetic code for the conversion of mRNA codons to proteins has redundancy. Correct! True False Good work The light reactions of photosynthesis produce and and this process also results in the release of . Answer 1: Correct!ATP Correct Answer NADPH + H+ Correct Answer NADPH+ H+ Answer 2: You AnsweredNADPH+H Correct Answer ATP Correct Answer NADPH+H+ Correct Answer NADPH+ H+ Answer 3: Correct!oxygen Correct Answer O2 The Calvin-Benson cycle takes in and from the light reaction and also to make carbohydrates. Answer 1: Correct!ATP Answer 2: Correct!NADPH+H+ Correct Answer NADPH + H+ Answer 3: You AnsweredWATER, CO2 Correct Answer carbon dioxide Correct Answer CO2 In Photosynthesis the antenna system is in the membranes. You Answered Correct Answers thylakoid The most abundant protein in the world is called . You Answered Correct Answers rubisco Protein synthesis changes from the language of to the language of . Answer 1: Correct!nucleotides Correct Answer nucleotide Answer 2: Correct!amino acids Correct Answer amino acid In eukaryotic cells the start codon for protein synthesis is . Correct! Correct Answers AUG or methionine AUG Methionine There are two types of protein synthesis in eukaryotic cells. These two types can be distinguished because the polyribosome is either or . Answer 1: Correct!free Answer 2: Correct!membrane bound Correct Answer membrane-bound Glycolysis requires the investment of two in order to obtain a gross output of four . Answer 1: Correct!ATPs Correct Answer ATP Answer 2: Correct!ATP Correct Answer ATPs The citric acid/Kreb’s cycle breaks down carbohydrates into CO2. Correct! True False Good work FADH2 results as one of the products of the citric acid cycle. Correct! True False Good work The cell does not need ATP to survive. True Correct! False Good work Specifically in a cell where does Glycolysis occur? Correct! Cytoplasm Mitochondrial matrix Inner mitochondrial membrane Glycolysis ATP Good work Specifically where in a cell does the citric acid/Kreb’s cycle occur? Cytoplasm Correct! Mitochondrial matrix Inner mitochondrial membrane Glycolysis ATP Good work Where is carbon dioxide produced? Carbon dioxide Correct! Mitochondrial matrix Inner mitochondrial membrane Oxygen carbohydrates Good work Bone marrow is a site where mature immune cells are found. True Correct! False Good work There are times when the spleen can be considered to be the primary lymph node. Correct! True False Good work Lymph nodes are a place where cells of the immune system accumulate and share information. Correct! True False Good work You should have your appendix removed whenever possible. True Correct! False Good work Red blood cells are a part of the immune system True Correct! False Good work Red blood cells originate from the bone marrow. Correct! True False Good work B and T cells are called lymphocytes Correct! True False Good work In 1 mL of blood, there are 1.5 million white blood cells True Correct! False Good work Natural killer cells are part of the specific immune system. True Correct! False Good work Having a fever of 100 degrees F can help you fight off infections. Correct! True False Good work Mast cells release histamine. Correct! True False Good work The humoral immune system involves cells in the immune system. Correct! True False Good work Any cell can present an antigen on a class I major histocompatibility complex (MHC) protein. Correct! True False Good work Any cell can present an antigen on a class II major histocompatibility complex (MHC) protein. True Correct! False Good work Memory cells “remember” the antigen and make a faster and greater response the next time the antigen is encountered. Correct! True False Good work A bacterium coated by antibodies is a signal that a macrophage should endocytose (eat) it Correct! True False Good work Memory cells in your immune system will all die after 3 months. True Correct! False Good work A bacterium your body coated by antibodies is protected from the immune system. True Correct! False Good work Inflammation is caused by an increased blood supply due to released by some cells of the immune system. Correct! Correct Answers histamine histamines Epithelial cells serve as a barrier to prevent non-specific movement of chemicals from one side of the epithelium to the other side. Correct! True False Good work The molecular seal that serves as the barrier is called a . While this is a good barrier, such barriers are not very strong and must be underlined by . Answer 1: Correct!tight junction Correct Answer tight junctions Answer 2: Correct!adhering junctions Correct Answer adhering junction The digestive track begins with the and the first enzyme added is . Answer 1: Correct!mouth Answer 2: Correct!amylase How does the lymph fluid return from the legs to the circulatory system? How are the leg muscles involved? Describe the role of the lymph ducts. Your Answer: movement, and contraction and relaxtion of muscles in the legs lymph ducts have one vales, lymph ducts join with the circulatory system above the heart Write a few sentences to distinguish between digestion and absorption. Where do each of these processes occur? Your Answer: Digestion is the process in which food is broken down in the GI tract realing many nutrients in forms the body can use. Absorption is the process in which nutrients are taken into the cells lining the GI tract What is bile made from? And how does oatmeal reduce cholesterol levels? Your Answer: Choleserol, the oats absorb cholesterol well Question 46 3 / 5 pts When glucose is taken in by the digestive track and enters your blood, cells are triggered to take in the glucose by what mechanism? describe the pathway of this mechanism. Your Answer: realse of insulin from pancreas #46 Insulin is a ligand that enters the circulatory system and interacts with receptors in the plasma membrane of all cells (in a healthy person) (-2 points) Using your pen/pencil and paper, draw the sugar in DNA and label the carbons as discussed in the lecture. Then circle the carbon that is different in RNA. This question requires a hand-drawn response. When you have finished the drawing, hold the drawing up to your web camera for verification. Then you will scan the image of the drawing (acquired via smartphone, camera or scanner) and load the image into your computer as a file. Then go to the "Exam 2 Part 2" link and upload the file within 45 minutes. This question is worth 5 points, and credit will be given under Exam 2 Part 2 in your grades area. Click "Done" below for your answer once you've held up the drawing to the camera. Correct! Done, and I now have 45 mins to upload the drawing file to Exam 1 Part 2 Click above when finished Quiz Score: 88.5 out of 95 Show Less