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Biology Exam Study
studying for biology exams
80
Biology
9th Grade
12/11/2011

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Cards

Term
What is biology?
Definition
study of life
Term
What is the smallest unit of life?
Definition
cells
Term
What are the three characteristics of living things?
Definition
made of cells,need energy,and reproduce
Term
what are organisms composed of?
Definition
cells
Term
What is homeostasis?
Definition
a stable internal environment
Term
What is a theory?
Definition
a unifying explanation for a broad range of hypothesis
Term
What is a hypothesis?
Definition
a testable possible explanation of an observation
Term
how do you test a hypothesis?
Definition
experiment
Term
What is an observation?
Definition
using the senses
Term
What are organisms with one cell?
Definition
unicellular
Term
What is called when cells do a specific job?
Definition
differentiation
Term
What type of reproduction leads to genetic variation?
Definition
sexual
Term
how do autotrophs obtain energy?
Definition
the sun or photosynthesis
Term
What is taxonomy?
Definition
the study of the classification of organisms
Term
what are the final two levels of classification?
Definition
Genus- Capitalized
Species- lowercase
Term
What is the correct order of hierarchy?
Definition
Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species
Term
what is the most general level of the order of hierarchy?
Definition
Domain
Term
what are viruses?
Definition
organisms with RNA or DNA in a protein coat
Term
Where do viruses reproduce?
Definition
inside the cell
Term
Are viruses alive or not? Why or Why not?
Definition
not because they have no homeostasis, no metabolism and no cells
Term
Why do viruses only infect one specific host?
Definition
they can match specific receptor membrane proteins of the host cell
Term
what is the lysogenic cycle?
Definition
viral DNA is incorporated into host cells DNA
Term
What color do gram positive bacteria stain?
Definition
Purple
Term
What are the characteristics of prokaryotes/bacteria?
Definition
no nuclei, or membrane bound organelles
Term
What is a method of locomotion for bacteria?
Definition
flagellum
Term
What are characteristics of protozoa?
Definition
animal like
Term
how does amoeba move?
Definition
pseudopodia
Term
What are the characteristics of fungi?
Definition
eukaryote, heterotropic, multicellular and unicellular ,chitinous cell walls, decomposes
Term
How are protozoa able to survive harsh environmental conditions?
Definition
sists
Term
What are examples of fungi?
Definition
mushrooms, yeast, bread mold
Term
How do fungi obtain nutrients?
Definition
digest organic material externally before absorbing it
Term
What is mycelium made up of?
Definition
mat or network of hyphae
Term
What is lichen?
Definition
symbiosis between fungus and a photosynthetic partner
Term
What is the role of fungi in an ecosystem?
Definition
to decompose
Term
What is an economic use of fungi?
Definition
to make food, alcohol, antibiotics
Term
What type of environment to fungi live in?
Definition
moist environment
Term
what parts of plants are consumed?
Definition
leaves, the roots, and the stems
Term
Why do we rotate crops in fields?
Definition
to allow legumes to restore nitrogen to the soil
Term
What is a cuticle?
Definition
a waxy coat on a plant
Term
What is the xylem?
Definition
carries the water up the plant from the roots
Term
What is Phloem?
Definition
carries food up the plant starting from the leaves
Term
Why are mosses pioneer plants?
Definition
mosses help create soil
Term
What is a characteristic of monocots leaf vain patterns?
Definition
Parallel
Term
What determines whether something is a monocot or a dicot?
Definition
a monocot has 1 cotyledon and a dicot has 2 cotyledons
Term
Where do plants grow?
Definition
meristems
Term
Where is pollen produced?
Definition
anther
Term
Why are flowers colorful?
Definition
to attract insects or animals to pollinate
Term
What is the function of fruit?
Definition
provide food protect, disperse seeds, protect seeds.
Term
What advantage does cross pollination gives plant?
Definition
to increase genetic variation
Term
What are some examples of gymnosperms?
Definition
spruces, firs, cone trees, pine trees
Term
what are characteristics of kingdom animalia?
Definition
no cell walls, heterotrophic, multicellular
Term
Why are animal cells specialized?
Definition
to do specific jobs that the body needs them to do
Term
What is the process in which a blastula forms a gastrula?
Definition
gastrulization
Term
What is a blastula?
Definition
a hollow ball of cells
Term
what tissues are unique to animals?
Definition
muscular tissue and nervous tissue
Term
What type of symmetry does a butterfly have?
Definition
bilateral
Term
what is cephailzation?
Definition
concentration of sensory organs in the head
Term
what is ectoderm develop into?
Definition
skin and nervous tissue
Term
what organisms have exoskeletons made of chitin?
Definition
arthopods
Term
what type of relationship does lampreys have with fish?
Definition
parasitism
Term
what kind of development does a butterfly?
Definition
complete metamorphosis?
Term
why is the skin of amphibians wet?
Definition
to allow gas exchange
Term
what happens during the metamorphosis of frogs?
Definition
grows legs and loses the tail
Term
what is the characteristics of bird skeletons?
Definition
hollow and thin bones
Term
what are examples of marsupials?
Definition
opossums and kangaroos
Term
what is ecology?
Definition
living things interacting with their physical enviroment
Term
what is a habitat?
Definition
where a organism lives
Term
what is population?
Definition
a group of organisms at a specific place and time
Term
what is a species?
Definition
lowest classification of taxonomy and I liable to reproduce
Term
What is a example of a producer and consumer?
Definition
zebra eating grass
Term
what is competition?
Definition
when two things compete for the same thing?
Term
what is carrying capacity?
Definition
when the deaths and the births are equal
Term
where is herbivores on the food chain?
Definition
second level
Term
what is comensilism?
Definition
where one thing benefits and the other is not harmed
Term
In the nitrogen cycle what uses do plants use nitrates and nitrites to form?
Definition
amino acid
Term
what is a biome?
Definition
major ecosystems that occur over wide areas
Term
where is herbivores on the food chain?
Definition
second level
Term
what is comensilism?
Definition
where one thing benefits and the other is not harmed
Term
In the nitrogen cycle what uses do plants use nitrates and nitrites to form?
Definition
amino acid
Term
what is a biome?
Definition
major ecosystems that occur over wide areas
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