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straighterline bio 101 test solution.docx, Exams of Nursing

Walden UniversityNursing

straighterline bio 101 test solution.docx

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2025/2026

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Straighterline - Bio 101 Final Exam Study Guide
Questions and Answers (Verified Revised Full Exam)
1. Nutrient molecules are used to build cellular structures or for
energy. This
best represents which characteristic of life?
Ans>> Living things acquire materials and energy from the
environment
2. Organs are composed of tissues, which are composed of cells.
This is an example of which characteristic of life?
Ans>> Living things have levels of hierarchical organization
3. The smallest unit that has all of the characteristics of life is the
Ans>> cell
4. The blueprints for structural organization and metabolism are
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Straighterline - Bio 101 Final Exam Study Guide

Questions and Answers (Verified Revised Full Exam)

  1. Nutrient molecules are used to build cellular structures or for energy. This best represents which characteristic of life? Ans>> Living things acquire materials and energy from the environment
  2. Organs are composed of tissues, which are composed of cells. This is an example of which characteristic of life? Ans>> Living things have levels of hierarchical organization
  3. The smallest unit that has all of the characteristics of life is the Ans>> cell
  4. The blueprints for structural organization and metabolism are

2 / 8 contained in , and the offspring receive copies of these instructions. Ans>> DNA; from the parent

  1. Which of the following is a potential consequence if people stop using technology in the agriculture industry? Ans>> There could be a significant decrease in the amount of food produced.
  2. If a new anti-cancer drug is found to be effective in initial tests with mice, what might researchers conclude? Ans>> The drug is effective in the mouse model; it must still be tested in humans
  3. Technology is the. Ans>> application of scientific knowledge for a practical purpose
  4. Which statement regarding science technology is false? Ans>> Science technology is a basis for all ethical or moral decisions

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  1. Humans belong to the kingdom of Ans>> Animalia
  2. A physician specializes in surgery involving the following group of organs Ans>> mouth, esophagus, stomach, and intestines. Overall, what is the highest level of organization that this physician is specialized in? Ans>> organ system
  3. Which sequence correctly lists the different levels of biological organiza- tion, from the smallest and simplest to the largest and most complex? Ans>> cells-tis- sues-organs-organ systems-organism
  4. The layer where organisms can exist on the surface of the earth is the Ans>> - biosphere

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  1. Which statement about an ecosystem is incorrect? Ans>> There is a community of organisms, but no non-living components.
  2. All the organisms of various species living within a given area constitute a(n) Ans>> community
  3. The most important factor that determines where major ecosystems are located on the globe is Ans>> climate
  4. An ecosystem generally requires solar energy, nutrients, decomposers, consumers and. Ans>> producers
  5. All the banded sunfish (Enneacanthus obesus) in a pond would comprise a(n) Ans>> population
  6. Ever since the antibiotic drug penicillin was discovered in 1928, the inci- dence of resistant bacteria has steadily increased as a direct result of Ans>> natural selection
  7. A community of organisms along with their physical environment consti- tutes a(n) Ans>> ecosystem
  8. As the human population size increases, Ans>> biodiversity is adversely affected as humans have destructive effects on ecosystems

7 / 8 contain alpha helices but instead they have changed into a protein made of beta pleated sheets. The disease appears to spread when the abnormal protein comes into contact with the normal protein,

8 / 8 causing it to become deformed. Which level of protein structure is associated with these diseases? Ans>> secondary

  1. Most enzymes are Ans>> protein molecules
  2. In feedback inhibition of a metabolic pathway, where does the inhibitor bind? Ans>> to the enzyme of the first reaction
  3. The amount of energy available to do work after a chemical reaction has occurred is called Ans>> free energy
  4. Whether or not an enzyme is active and present within a cell depends on all of the following except Ans>> whether the enzyme catalyzes an endergonic or exergonic reaction.
  5. What is the equation for photosynthesis? Ans>> energy + 6CO2 + 6H2O โ€™ C6H12O
  • 6O
  1. The molecule that is found at the beginning and end of the citric acid cycle is Ans>> four-carbon molecule.
  2. What role does NAD+ play in cellular respiration? Ans>> It is an electron carrier
  3. How efficient is the breakdown of one glucose via cellular

10 / 8 synthesis during photosynthesis is the Ans>> thylakoid space

  1. ATP is an ideal energy source for cells because Ans>> ATP is a common means of providing energy that can be used in any energy-requiring process in cells
  2. Which of the following would be considered evidence that chloroplasts are involved in photosynthesis? Ans>> Isolated chloroplasts give off oxygen when exposed to sunlight.

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  1. During photosynthesis, solar energy is converted to chemical energy by the chloroplasts. The process is represented by Ans>> solar energy + carbon dioxide
  • water โ€™ carbohydrate + oxygen
  1. The electron transport chain is named for Ans>> the passage of electrons from one energy-generating carrier to another
  2. Which of these is present in plant, but not animal, cells? Ans>> chloroplasts
  3. Kinesin and dynein are associated with Ans>> microtubules
  4. Tay-Sachs is a serious childhood metabolic disorder where fail to digest certain lipids. Ans>> lysosomes
  5. According to endosymbiotic theory, mitochondria and chloroplasts con- tain a limited amount of genetic material and divide by .Their DNA (deoxyribonucleic acid) is a circular loop like that of prokaryotes. Ans>> splitting
  6. 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

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  1. A differentially permeable membrane separates a molasses solution from distilled water. Over time, the Ans>> molasses will become more dilute.
  2. In certain cancerous cells, the cell divides continuously even in the ab- sence of a growth factor (signaling molecule) that indicates the cell should divide. Which of the following could NOT explain this? Ans>> The correct answer is a receptor molecule that is always turned off
  3. According to the fluid-mosaic model of membrane structure, Ans>> proteins float inside or within the phospholipid bilayer

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  1. Following a cut or scrape, which process repairs your skin? Ans>> mitosis
  2. Which of the following is not true of the chromosomes in a cell undergoing mitosis? Ans>> They are available for RNA synthesis.
  3. The cell cycle consists of Ans>> mitosis and interphase
  4. In humans, the diploid number of chromosomes is Ans>> 46
  5. Which type of genes, when abnormally activated so that protein is always present and active, can result in cancer? Ans>> proto-oncogenes
  6. During interphase, Ans>> hereditary material duplicates itself.
  7. What is the difference between the chromosomes in a secondary sperma- tocyte and those in a spermatid? Ans>> the chromosomes in secondary spermatocytes consist of two chromatids, the ones in the spermatid consist of only one chromatid
  8. A basic difference between spermatogenesis and oogenesis is that in oogenesis Ans>> one functional egg is produced.
  9. In 1940, two researchers named Weiner and Landsteiner discovered that about 85 percent of the human population sampled possessed a blood cell protein called the Rh factor.The presence of Rh factor was labeled Rh positive (Rh+) and was

16 / 8 XXXX), and normal XX combinations, it is obvious that Ans>> maleness results from the minimal presence of one Y chromosome.

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  1. If there is complete linkage with genes Ss (for smooth or wrinkled seeds) and Gg (for green or yellow seeds), what phenotypes would you expect in the offspring of a cross with one heterozygous parent (Ss, Gg), which would all produce all smooth and green seeds, and a homozygous recessive parent (ss, gg), which would produce all wrinkled yellow seeds? Ans>> smooth green seeds or wrinkled yellow seeds only
  2. Which of the following pairs of alleles would be most likely to cross over? Ans>> A..........B
  3. An XXX female would most likely result from nondisjunction in Ans>> the mother during egg formation
  4. 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
  5. If an individual has a XYY genotype, they are classified as having Ans>> Jacobs syndrome
  6. The individual(s) credited with the discovery of the structure of DNA is (are) Ans>> James Watson and Francis Crick

19 / 8 Ans>> generating pharmaceuticals

  1. A piece of DNA that contains sequences from two or more different organ- isms is called DNA. Ans>> recombinant

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  1. One of the problems that limits the use of gene therapy is Ans>> detrimental side effects from the inserted genes.
  2. Which of the following procedures would most likely be used to identify a specific individual of a population? Ans>> DNA fingerprinting
  3. Stomata Ans>> allow gas exchange
  4. You need to identify a plant but it is winter and the leaves have fallen to the ground mixed with others. The parts of flowers, fruits, and seed leaves of germinating seeds are not available either. Your best clue to whether it is a monocot or a eudicot is to Ans>> cut the stem and if the vascular bundles are scattered in the stem, it is a monocot.
  5. The function of meristematic tissue is Ans>> production of new tissues
  6. Which of the following statements is not correct about the arrangement of tissues in the eudicot root? Ans>> The star-shaped phloem is located in the center of the vascular cylinder, with xylem arranged between the arms of the phloem.
  7. Epidermal tissue, ground tissue, and vascular tissue systems are derived from Ans>> apical meristem