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Week 1
Characteristics of Life & Biological Organization
| Question | Answer |
|---|---|
| What is biology? | the study of life |
| What are the 8 characteristics of life, or living things? (Hint: MRCHEDDR) | Metabolism; Reproduction; Cells; Homeostasis; Evolution; DNA; Development and Growth; Response to Stimuli |
| What is metabolism? | The sum of the total of the biochemical reactions occurring in an organism is called its metabolism. |
| All living things need to consume _______ to obtain _______. (Metabolism) | nutrients; energy |
| Living things must use ________ and consume ________ to carry out the chemical __________ that sustain life. (Metabolism) | energy; nutrients; reactions |
| __________ organisms capture __________from the sun and convert it to __________ energy. (Metabolism) | energy; chemical |
| During cell respiration, organisms use __________energy stored in the __________ they consume to power life’s activities. (Metabolism) | chemical; molecules |
| All living things __________ to produce new similar organisms. | reproduce |
| What is reproduction? | the process of making the next generation of organisms |
| What is the process of sexual reproduction? | gametes (sperm and egg) from two individual parents untie to create new genetically unique offspring |
| Most ___________ and ___________ reproduce sexually. | plants; animals |
| What is the process of asexual reproduction? | a single organism produces genetically identical offspring |
| _______, some _______, hydra, and some ________ reproduce asexually. | Bacteria; worms; plants |
| All living things are highly __________ and made up of one or more __________. | organized; cells |
| _____________ organisms are composed (made) of more than one cell. | multicellular |
| What is the basic unit of structure and function of all living things? | a cell |
| Cells form _________ and tissues form ________. | tissues; organs |
| Organs work together to form ___________ systems. | organ |
| _____________ organisms are single celled. | unicellular |
| __________ make up the molecules that form the cell's structures. | atoms |
| Name the Levels of Organization in order | atoms; molecules; organelles; cells; tissues; organs; organ systems; organism |
| What is homeostasis? | the maintenance of a stable internal environment despite a changing external environment |
| Living things need to ___________ their internal environment to maintain cell function | regulate |
| All _________ systems work together to maintain homeostasis. | body |
| Homeostasis helps to __________ body systems by controlling __________, glucose levels, __________ pressure, etc. | regulate; temperature; blood |
| What is evolution? | the genetic makeup of a population may change over long periods of time |
| Over generations, a ___________ trait that provides an ___________ may become more common in a population to make it easier to ________ to its environment. | heritable; advantage; adapt |
| Evolution has linked all forms of life to a common _________ over 3.5 billion years ago. | origin |
| What is DNA? | The molecule inside cells that contains the genetic information responsible for the development and function of an organism. |
| All living things have ______ that is based on a universal genetic __________. | DNA; code |
| DNA stores __________ information needed to grow; reproduce, and perform life-sustaining cell activities. | genetic |
| All DNA in all organisms contains the same nitrogenous bases: ____________, guanine, __________, and thymine. | adenine; cytosine |
| All life on Earth's genetic code is nearly ______________. | identical |
| All living things grow and _________ following specific instructions coded by their _________. | develop; genes |
| What is growth? | the process of getting bigger (increase in material and structures) |
| What is development? | the process of changes that occur in an organism;s life cycle |
| All living things respond to __________ or changes in their ________. | stimuli; environment |
| What is a stimulus? | a signal that an organism responds to |
| What is a response? | a reaction or change in action that is brought on by a stimulus |
| You touch a hot pan and pull your hand away. Touching the hot pan is the __________, and pulling your hand away is the ___________. | stimulus; response |
| Pupils constrict when light is brighter. Pupils constricting (getting smaller) is the __________, and light being brighter is the _____________. | response; stimulus |
| A plant releases unsavory chemicals to ward off insects that eat their leaves. The plant releasing chemicals is the __________, and the insects eating their leaves is the __________. | response; stimulus |
| The following statements are examples of ________ to ________. You are hungry, so you eat some food. A rabbit gets scared, so it runs away. You are cold, so you put on a jacket. A dog is hot, so it lies in the shade. | response; stimuli or a stimulus |
| What is the difference between growth and development? | Growth is the process of getting bigger, and development is the process of changes that occur in an organism's life cycle. |
| What is the function of DNA? | DNA stores genetic information needed to grow, reproduce, and perform life-sustaining cell activities. |
| What is the definition of evolution? | Evolution is when the genetic makeup of a population changes over long period of time. |
| What is the following an example of? Anatomy - a species share similar features because they were present in a common ancestor | evolution |
| What is the following an example of? DNA and the genetic code reflect shared ancestry of life and show related species | evolution |
| Regulating temperature through sweating or panting is an example of what? | homeostasis |
| Regulating blood sugar levels is an example of what? | homeostasis |
Created by:
Mrs. Ervin Vicksburg High School
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