1. Introduction to Biology

Characteristics of Life

7 characteristics of living things

 No. This is a fundamental characteristic of populations of organisms. Remember, though, that this is a property of a population of living things, not of an individual. 

 All living things maintain complexity of order. 

 No. This is a true statement. Living things maintain order, which is a form of work; hence, they must also use energy. 

 They convert energy from one form to another. 

 No. This is a true statement. All living things are ordered; maintaining order requires work; work requires an input of energy; therefore, all living things must obtain useable forms of energy by doing energy conversions. 

Remember that there are living things in all sorts of environments, not just in the conditions that humans are used to.

Which of the following is not an attribute of living things?

Which of the following best demonstrates the unity among all living organisms?
a. structure correlated with function
b. DNA and a common genetic code
c. emergent properties
d. natural selection

Are Viruses Alive?

 No. Organelles exhibit some but not all of the characteristics of living systems. 

 No. A tissue is composed of cells of similar structure and function&mdash;for example, nerve cells forming nervous tissue. Tissues exhibit the functions of life, but there is a simpler level of biological organization that is life's fundamental unit of structure and function. 

 No. An organ consists of two or more tissues, whereas a tissue consists of cells of similar structure and function. Organs exhibit the functions of life, but there is a simpler level of biological organization that is life's fundamental unit of structure and function. 

Consider the lowest level of biological organization that exhibits all the properties of life.

Which of the following is the fundamental unit of structure and function in living organisms?

Consider the validity of the following statements about genome editing. Select True or False for each statement.
T/F Cas proteins work as endonucleases.
T/F sgRNA is used by bacterial cells to detect which DNA to cut.
T/F Homologous recombination is always used to join pieces of broken DNA.
T/F It is possible to modify genes as well as disrupt them by genome editing.

Which of the following best demonstrates the unity among all organisms?
a. emergent properties
b. descent with modification
c. the structure and function of DNA
d. natural selection

 They must utilize energy from sunlight, either directly or indirectly. 

 No. Although organisms must use energy, converting it from one form to another, there are organisms that obtain their energy from chemicals in the environment. 

 No. Oxygen levels on Earth did not reach significant levels until around 500 million years ago. Ancient organisms were largely anaerobic, and even today there are many anaerobic organisms. 

 They must be able to reproduce sexually. 

 No. Many organisms reproduce asexually. 

 They must be capable of acquiring adaptations through evolution. 

Which of the following is an attribute of living things?

Animation: Signs of Life

Salt concentration in blood remains relatively steady, regardless of a person’s diet. This best illustrates:

Which of these is not a property of all living organisms?
a. capable of reproduction
b. uses energy
c. composed of multiple cells
d. responds to the environment

The 10 (Ten) Characteristics Of Human Life

Characteristics of Life Example 1

All of the following are characteristics of life EXCEPT:

 No. When an energy transformation occurs, there is often a loss of heat energy to the surroundings, but heat is not the ultimate source of energy for most forms of life. 

 decomposition of plants and other organic debris 

 No. This process provides nutrients, not chemical energy. 

 No. Carbon dioxide is a waste product of the oxidation of reduced organic compounds such as sugars, and it is the source of the carbon in the sugar produced by photosynthesis. 

Consider how plants obtain energy.

The energy used by most organisms for metabolism and growth ultimately comes from __________.

Seven Life Processes | Physiology | Biology | FuseSchool

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2. Chemistry

3. Water

4. Biomolecules

5. Cell Components

6. The Membrane

7. Energy and Metabolism

8. Respiration

9. Photosynthesis

10. Cell Signaling

11. Cell Division

12. Meiosis

13. Mendelian Genetics

14. DNA Synthesis

15. Gene Expression

16. Regulation of Expression

17. Viruses

18. Biotechnology

19. Genomics

20. Development

21. Evolution by Natural Selection

22. Evolution of Populations

23. Speciation

24. History of Life on Earth

25. Phylogeny

26. Prokaryotes

27. Protists

28. Plants

29. Fungi

30. Overview of Animals

31. Invertebrates

32. Vertebrates

33. Plant Anatomy

34. Vascular Plant Transport

35. Soil

36. Plant Reproduction

37. Plant Sensation and Response

38. Animal Form and Function

39. Digestive System

40. Circulatory System

41. Immune System

42. Osmoregulation and Excretion

43. Endocrine System

44. Animal Reproduction

45. Nervous System

46. Sensory Systems

47. Muscle Systems

48. Ecology

49. Animal Behavior

50. Population Ecology

51. Community Ecology

52. Ecosystems

53. Conservation Biology

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Life's Organizational Hierarchy

Scientific Method

Natural Selection and Evolution

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