Shared Flashcard Set

Details

mid term study guide
voc/midterm sci soms
49
Biology
7th Grade
01/05/2011

Additional Biology Flashcards

 


 

Cards

Term
Darwin
Definition
theory of natural selection/only the strongest and most fit will survive
Term
Hooke
Definition
observed a cork through a microscope and is responsible for the name "cells"
Term
Linnaeus
Definition
responsible for our system of classification called Taxonomy
Term
adaptation
Definition
an organism changes over time in order to become better suited to its environment-
Term
Mendel
Definition
studied the pea plant-dominant and recessive genes
Term
dominant gene
Definition
shown by a capital letter in a punnett scale-stands fora dominant allele
Term
heterozygous
Definition
one upper and one lower case letter combination used in a punnett square (Ss)two different alleles
Term
homozygous
Definition
two upper case letters (the same SS) used in a punnett square
also called a PUREBRED)
Term
dominant trait
Definition
trait that is stronger
Term
viruses
Definition
all are harmful-destroy cells
all have no nucleus
thousands of different shapes
have DNA
reproduces inside a living cell
usually considered non-living because viruses do not use energy to gro, can not make food, take in food or produce wastes
but;;;;; they can multiply


smallest living thing
uses a host to transfer its DNA to change good cells into diseased cells
thousands of different shapes
waits for more viruses to enter before they all attack-can wait for a long time
Term
recessive trait
Definition
trait that is weaker and only shows up when there are two lower case letters together (ss)
Term
incomplete dominance
Definition
cross a brown dog with a white dog and the offspring is tan
Term
sex linked disorder
Definition
specific to either males or females -not both
Term
shapes of bacteria
Definition
spheres-coccus
rods-bacillus
sprals-spirillum
Term
punnett squares
Definition
system used to determine the phenotypes of offspring-
Term
phenotypes
Definition
the way offspring appear (brown hair, blue eyes, brown eyes, short, tall etc)-usually expressed in percentages
Term
number of chromosomes in human cell
Definition
46
Term
plant cell
Definition
contains cell wall and chloroplasts which make food-
Term
chlorophyll
Definition
gives a plant its green color
Term
ribosomes
Definition
make protein in cells
Term
mitochondria
Definition
creates energy/power for cell
Term
smooth endoplastic reticulum
Definition
vehicle for ribosomes
Term
rough endoplasmic reticulum
Definition
carries proteins/ribosomes throughout the cell
Term
nucleus
Definition
control center of a cell
Term
golgi bodies
Definition
organelle that packages cellular material and delivers to parts of the cell
Term
vacuoles
Definition
store water, food, and waste in cells-larger in plant cells
Term
cell membrane
Definition
protects, allows good in, keeps bad out
Term
semi permeable
Definition
membrane that allows only some things in and out of a cell
Term
stages of mitosis
Definition
interphase
prophase
metaphase
anaphase
telephase
and cytokenesis-produces two daughter cells
Term
interphase
Definition
resting phase of a cell-the longest phase
Term
active transport
Definition
movement of molecules that uses energy
Term
active transport
Definition
movement of molecules that uses energy
Term
DNA
Definition
chemical that contains the code for a cell-usually contained in a nucleus
Term
bacteria
Definition
no nucleus
some good, some bad
used for some foods, cheese buttermilk, yogurt
used to prevent harmful results of enviromental disasters-like the oil spill
used in some medicines like penicillum
Term
congugation/fission
Definition
way that bacteria reproduce
Term
cellular repiration
Definition
creates energy
Term
coarse adjustment knob
Definition
used first to focus in low power
Term
parasites
Definition
organisms that live in or on a host and they cause harm to the host
Term
flagellum
Definition
long tail that allows a cell to move
Term
fine adjustment knob
Definition
used to focus when using high power objective
Term
spontaneous generation
Definition
an idea which is INCORRECT-people thought that living things come from NONliving things
Term
organism
Definition
living thing made of either one cell or many cells
Term
organelles
Definition
all the parts that make up a cell
Term
bacteriophage
Definition
"bacteria eater"
Term
biogenesis
Definition
all things come from living things-not non living things
Term
Schleiden, Schwann, and Virchow
Definition
responsible for cell theory
Term
osmosis
Definition
transfer from areas of high concentration to an area of low concentration-only with water
Term
diffustion
Definition
spread of particles from an area of high concentration to an area of low concentration
Term
to make a wet mount slide
Definition
take a clean slide
place specimen with a tweezers in center
place a drop of water on slide
place a clean cover slip over the wet spot
press together
clean up any excess water
Supporting users have an ad free experience!