Biology Exam 1 Quizzes and Answers 2023

Biology Exam 1 Quizzes and Answers 2023 The three major domains of life are Ans - archaea, bacteria, and eukaryotes Which of these classification categories contains the closest related group of organisms? Ans - genus What is the correct format for the binomial name of humans beings? Ans - Homo sapiens Which sequence correctly lists the different levels of biological organization, from the smallest and simplest to the largest and most complex? Ans - cells - tissues - organs - organ systems - organism A collection of _____ combine together to form _____. Ans - cells; tissue All the organisms of various species living within a given area constitute a(n) Ans - community An ecosystem generally requires solar energy, nutrients, decomposers, consumers, and _____. Ans - producers All the banded sunfish in a pond would comprise a(n) Ans - population The ultimate goal of behavior is largely thought to maximize survival and reproductive success. Despite life coming in many different forms, it is therefore not surprising that virtually all organisms' behaviors are oriented towards avoiding injury, acquiring energy, or _____. Ans - reproducing Two molecules of glucose combine to form a disaccharide molecule during a(n) _____ reaction. Ans - dehydration Which nutrient source is the easiest one for humans to break down and form ATP? Ans - glucose An example of "structure equals function" or "form follows function" at the molecular level is that Ans - hormones have specific shapes to be recognized by specific cells in the body Which statement about the cellular nucleic acids DNA and RNA is incorrect? Ans - RNA and DNA have to same 4 nitrogen-contains bases Lactic acid can be taken to the liver via the bloodstream, and the liver can convert it to Ans - glucose Which of the following would be considered evidence that chloroplasts are involved in photosynthesis? Ans - isolated chloroplasts give off oxygen when exposed to sunlight Cellular respiration is best associated with the Ans - mitochondrion Which of the following cells can be part of a multi-cellular organism, have a nucleus, and have a specialized organelle for energy production? Ans - eukaryote When an intestinal cell ingests substances inside very small vesicles that can only be seen with an electron microscope, this is Ans - pinocytosis Which of the following best describes the role of histones? Ans - histones determine the structure of the chromosome The genes that code for the proteins of the signaling pathway could be classified as Ans - proto-oncogenes Which of the following descriptions does not occur during apoptosis? Ans - DNA is duplicated A basis difference between spermatogenesis and oogenesis is that in oogenesis Ans - one functional egg is produced In feedback inhibition of a metabolic pathway, where does the inhibitor bind? Ans - to the enzyme of the first reaction Which of the following is a by product of photosynthesis? Ans - oxygen which of the following reactions is NOT part of the cellular respiration pathway? Ans - calvin cycle what are the products of photosynthesis? Ans - oxygen and carbohydrate for Mendel's law of segregation to occur, the alleles must be Ans - on a homologous pair of chromosomes at the same loci which genetic disorder is associated with a defect in the elastic connective tissue protein called fibrillin? Ans - Marfan syndrome an XXX female would most likely result from nondisjunction in Ans - the mother during egg formation in modern biochemical genetics, the flow of inherited information is from Ans - DNA RNA protein a genetic mutation can cause a change in the sequence of the 20 amino acids used to build proteins. Such a change is a change to the protein's Ans - primary structure, but will likely alter higher structure levels microtubules Ans - form a spindle that distributes chromosomes in an orderly manner if the chloroplast is the result of endosymbiosis, what membrane of the chloroplast represents the plasma membrane of the original prokaryote? Ans - the inner chloroplast membrane which is NOT a correct association? Ans - mitosis - when a cell duplicates and then divides twice to reduce chromosome number by half which statement about an ecosystem is incorrect? Ans - there is a community of organisms, but no non-living components the treatment of a disorder by inserting genetic material into an organism is called Ans - gene therapy if one strand of DNA has the base sequence AAGCAA, the complementary strand has which of the following sequences? Ans - TTCGTT Generally, it is not possible to determine whether nondisjunction failed to occur in oogenesis or spermatogenesis. However, it is possible to assert that _____ resulted in nondisjunction in _____. Ans - XYY ; spermatogenesis which of the following is a CAM plant? Ans - cactus the location in which the enzyme and substrate complexes is called the Ans - active site what is the equation for photosynthesis? Ans - energy++^6o2 independent assortment Ans - is a source of genetic variation the most potentially harmful type of mutation, because it can completely alter the protein coding sequence downstream of the mutation is a(n) Ans - frameshift mutation