BIOL 111 WITH ACCURATE QUESTIONS AND DETAILED SOLUTIONS |100% GUARANTEED PASS|LATEST VERSION 2026|GRADED A+|

1. Which group has prokaryotic individuals? ANSWER Domain Archaea 2. Suppose that a meteorite crashes on earth and a sample of it is taken to local research lab for analysis. Embedded several inches within the rocky structure, a microscopic cluster of dormant , spore -like structures is found. The scientist culture some of this material in a standard microbiological nutrient broth, and they are surprised to find many single-celled organisms moving around, growing, and reproducing in the broth. The organisms behave the same in both daylight and dark conditions, do not require oxygen, and persist under a wide range of temperatures and ph levels. They stop moving, growing and reproducing, however, when fewer nutrients are available in medium. In this scenario the organisms most closely resemble ANSWER Heterotrophic species of Archaea 3. To test the effect of vitamin D on growth, two groups of rats raised under identical conditions and fed the same diet. One of the groups received daily injections of Vitamin D. The other group received injections of saline, which did not contain vitamin D. All the rats were weighed weekly for to months in this experiment, the control was the: ANSWER Group receiving Saline 4. Which of these experiments would best test the following hypothesis: "Bacteria do not arise spontaneously on meat; they carried onto meat by droplets of water?" ANSWER Place the meat in two separate containers: Add water to one container and no water to the second container. Cover the containers and compare the growth of bacteria in the two containers. 5. Instruction: Flu vaccine for or against and why ANSWER Every individuals immune system is different. These variances could be caused by your genetics or your health. You cannot change your genetics but you can improve your health by washing your hands with warm soap and water, eating high nutrient foods exercise , and take vitamin supplements 6. You observe a plant on your window sill that is growing at an angle toward the outside. This is an example of a living thing: ANSWER responding to stimuli 7. The experiments of Francesco Redi : ANSWER disproved the idea of spontaneous generation 8. List four characteristics of living things, and give an example to illustrate each. ANSWER 1.Acquire and use materials from the environment, materials acquired are known as nutrients. An example of this is our need for food. 2. Respond to external and internal stimuli. A plant on your windowsill that is growing at an angle toward the outside. 3.Reproduction. Child bearing 4. Growth and development. A baby grows and develops at a very fast pace. 9. The process of homeostasis is ANSWER How organisms maintain a contant internal environment. 10. The word evolution means ANSWER change 11. Suppose an organism has an enzyme that repairs DNA errors. The result is a decrease in mutations. This trait would definitely influence the organisms ability to ANSWER evolve 12. The diversity of life is mainly due to ANSWER genetic variations 13. The collective group of all individuals of similar, interbreeding organisms that exist in the world is defined as ANSWER Species 14. Science cannot answer certain moral questions because ANSWER moral values differ among individuals 15. All of the following are important to the theory of evolution except ANSWER changes in individuals within their lifetime 16. Adaptions include all of the following except ANSWER enlarged leg muscles in horses, in response to pulling heavy wagon loads 17. A cell that lacks organelles is an ANSWER prokaryotic cell 18. Science assumes that the natural laws (such as the law of gravity) ANSWER apply uniformly through space and through time 19. The concept of evolution is based on: ANSWER survival and successful reproduction in organisms with favorable variations 20. Imagine that 1 milliliter of an experimental drug diluted in a saline solution is injected into 20 pregnant mice to determine possible side effects. Which of the following is a suitable control for this experiment? ANSWER 20 pregnant mice injected with 1 milliliter of saline 21. Which four elements make up approximately 96% of living matter? ANSWER Carbon, Hydrogen, Nitrogen and Oxygen 22. Carbon has atomic 6. Carbon most likely ANSWER share electrons 23. Scientists recommend a diet rich in in antioxidants to stay healthy. What occurs at the atomic level to explain this recommendation? ANSWER Antioxidants stop the chain reaction of cellular damage caused by free radicals. 24. Similar to a car, a human body is about ____ efficient in converting chemical energy to movement ANSWER 25% 25. Animals have enzymes that break apart starch molecules but not cellulose, despite the fact both are made up glucose sub-units. Which enzyme characteristic BEST explains this? ANSWER Enzymes are highly specific 26. A substance with specific properties that cannot be broken down or converted into another substance is called an ANSWER element 27. A hypothetical atom has one electron shell that can hold 10 electrons. This atom has seven protons and is electronically neutral. How many covalent bonds can this atom form? ANSWER Three 28. No two species can occupy the same ecological niche in the same place at the same time. This statement is known as __________. ANSWER the competitive exclusion principle 29. A poisonous frog with bright and colorful body markings is an example of _____. ANSWER warning coloration 30. At the start of a study, 200 spotted owls lived in an old-growth forest patch in western Oregon. During the next year, a biologist tracking the birds observed that 25 new birds hatched and 5 died. What was r for this year? ANSWER 0.1 31. A population of rabbits introduced into an island grew rapidly for a few years and then the growth slowed down. Why did the population become stable? ANSWER The carrying capacity was reached. 32. The carrying capacity was reached. ANSWER a keystone species. 33. Populations that have been relatively undisturbed by man normally grow with no limits set by their environments. True or False? ANSWER False 34. Within a year of abandoning agriculture on a plot of prairie land, the previously bare soil is overrun with annual weeds. Light, carbon dioxide, and mineral nutrients are readily available, but soil moisture is limiting. Still, some species appear to coexist very close to one another. Upon closer examination, two such species, smartweed and bristly foxtail, are observed to have very different root systems and ways of managing water. Smartweed has a very deep taproot, extending about a meter beneath the surface, tapping (literally) into a continuous deep water supply. Bristly foxtail has a much shallower and spreading fibrous root system, reaching less than 20 cm down. However, the latter plant is able to tolerate periods of drought and rapidly take up water after a rain. This example is a clear case of _____. ANSWER resource partitioning 35. A biologist who investigates how organisms interact with one another and with their nonliving environment is studying: ANSWER ecology. 36. In his 1961 paper, "The Paradox of the Plankton," ecologist G. E. Hutchinson noted that several species of algae coexist, sharing the same few mineral nutrient resources in homogeneous open-water systems. Because there is little chance of resource partitioning and niche differentiation in such a situation, the paradox of their coexistence is an apparent violation of: ANSWER the competitive exclusion principle. 37. Increased population densities and increased competition lead to increased emigration. True or False? ANSWER True 38. Predation is similar to ________ in that both types of relationship benefit one of the interacting species while harming the other. ANSWER parasitism 39. A certain species of animal represents just 3% of the biomass in its ecosystem. We might classify this as a keystone species if its removal: ANSWER caused the diversity of the plant community to decline by 40% 40. Some predators feed preferentially on the most abundant prey. This is an example of ________ predation. ANSWER density-dependent 41. Which of the following would you expect to occur in a captive population of guppies collected from Trinidad, if you allowed them to breed for many generations in an aquarium without any predators? ANSWER Male guppies that are brightly colored will have better reproductive success than dull males.