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Biology Final
9th Grade Final
| Question | Answer |
|---|---|
| What primitive Earth atmosphere is hypothesized mostly of | hydrogen, methane, ammonia, & water vapor |
| The Geologic Time Scale begins at the formation of Earth approxmiately ____ years ago | 4.6 billion |
| According to one theory, the first prokaryotes probably obtained their food | by consuming organic molecules available in thie environment |
| Which group of of organisms is believed to have been earliest to evolve? | cyanobacteria |
| What was the earliest from of multicellular life on Earth? | Invertebrates |
| Within a decade of the introduction of the new insecticide, nearly all of the descendants of the target pests were immune to the usual sized dose. The most likely expalanation for this immunity to the insecticide is that | the pests developed physiologicval adaptations to the insecticide |
| Natural process such as speciation and gradualism provide the genetic basis for | evolution |
| Structures that have a similar evolutionary origin and structure but are adapted for different purposes, such as a bat wing and a human arm are called | homologous structures |
| Natural selection is best defined as the | survival and reproduction of the organisms that are genetically best adapted to the environment |
| The founder of modern evolution theory is considered to be | Charles Darwin |
| Why might the birds beak be shaped like this? | to reach nectar in flowers |
| Any structure that is reduced in function in a living organisms but may have been used in an ancestor is known as a | vestigial structure |
| A system for naming species in which two words are used to name an organism is | binomial nomenclature |
| The placing of information or objects into groups based on certain similarities is | classification |
| The science of grouping and naming organisms is | taxonomy |
| Which of the bacteria is cause of pneumonia? | streptoccus pneumonia |
| Bacteria is used in | farming, medical industry, food industry |
| A structure in some bacteria that is resistant to adverse environmental factors is an | endospore |
| A ________ is a virus that infects a bacteria cell | bacteriophage |
| Viruses are found in | air, water, & soil |
| The name strectococcus tells you that the bacteria are arranged as | long chains of round cells |
| Which type of muscle makes up the heart? | cardiac |
| A(n) __________ muscle contracts under inconsious control | involuntary |
| Contractions of _____ muscle are slow and prolonged. | smooth |
| After suffering widespread third-degree burns, the burn victim | has a harder time regulating body temperature |
| Which portion of skin changes when you get a suntan? | epidermis |
| The body's preferred energy source is | carbohydrates |
| Which of the following is part of the digestive tract? | small intestine |
| The surface area of small intestine is greatly increased by | a large number of villi |
| The liver reacts to a high level of glucose in the blood by converting some of the glucose to | glycogen |
| How does pennicillin kill bacteria? | poking holes in cell wall |
| What are cyanobacteria? | photsynthetic autotrophs |
| How does a tree gets it's nutrients? | branch-trunks & leaves |
| What part would you remove from a plant that would make it starve? | leaves |
| What is vascualr and non-vascular? | v- stem n-no stem |
| Where is the ectoderm found? | outer layer of gastrala |
| In the worm, where is the stomach? | gizard |
| What do antennaes do for insects? | senses food |
| What makes something an arthropod? | w/ exoskeleton ; ANSWER! W/O EXOSKELETON |
| Why do snakes flick their tongues? | test chemicals |
| What is the name of the involuntary muscular constractions that move through the digestive tract? | peristalis |
| What is the name of the first section of small intestine? | duodenem |
| what is the filtering unit in a kidney? | nephrons |
| What is a protein that is produced in resonse to an antigen? | antibody |
| How does energy flow through organisms? | decreases as it goes up |
| What is the relationship between a cat and a mouse? | predator & prey |
| What type of consumer would a coyote be? | 3-order consumer |
| On the energy pyramid, what part recieves the highest percentage of energy? | producers ; bottom |
| How is nitrogen released into the biosphere? | decomposing organisms |
| What us limiting factor? | any biotic or abiotic factor that restricts existence numbers, reproduction, or distribution or organisms |
| What is carrying compacity? | number of organisms who can be supported in a given area with in natural resource limits |
| What is range of tolerance? | each ecosystems populations ability to adjust to variations in its physical & chemical environment |
| What are the types of succession and what do they mean? | primary - colonization of barren land secondary - sequence of changes that take place after existing |
| When population reaches its carrying capacity what shape does it have? | S |
| What happens when a population is unrestricted? | size & increase in mutation--> expendial growth |
| Acid rain is an example of what? | habitat |
Created by:
waligoran96
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