Shared Flashcard Set

Details

Bybee Test 2 UVU
Bybee Test 2 UVU
27
Biology
Undergraduate 1
02/06/2010

Additional Biology Flashcards

 


 

Cards

Term
What is Photosynthesis?
Definition
The process by which plants, algae, and some microorganisims harness solar energy and convert it into chemical energy
Term
What is the byproduct of Photosynthesis?
Definition
oxygen
Term
What is the product of photosynthesis?
Definition
glucose
Term
What is a pigment?
Definition
molecule that caputres light energy
Term
what is the pigment used in photosynthesis?
Definition
Chlorophyll a
Term
What are the accessory pigments in photosynthesis?
Definition

chlorophyll b

&

carotenoids

Term
What is the energy source for photosynthesis?
Definition
Sunlight
Term
What is an autotrophic organisim?
Definition
organisim that produces organic molecules by acquiring carbon from inorganic sources - primary producer
Term
what is a Heteratrophic organisim?
Definition
organisim that obtains carbon by eating another organisim - consumer
Term
How did photosynthesis change this earth?
Definition

~decreased CO2 in the atmosphere

~lowered global temps

~added new waste product (oxygen)

~allowed evolution of aerobic respiration

Term
small packets of energy found in light
Definition
photon
Term
what is cellular respiration?
Definition
breakdown of glucose to carbon dioxide & water
Term
What is glycolysis?
Definition

a metabolic pathway occuring in the cytoplasim of all cells

one molecule of glucose splits into two molecules of pyruvate

Term
3 main steps of cellular respiration? & where they occur...
Definition

glycolosis in cytoplasm

krebs cycle in mitochondria

electron transport chain

Term
what is the calvin cycle?
Definition
metabolic pathway in which CO2 is fixed & incorporated into glucose
Term
krebs cycle
Definition
stage in cellular respiration that completely oxidizes the products of glycolosis
Term
how is adenosine triphosphate (ATP)produced in the mitochondria?
Definition
krebs cycle
Term
what is needed for glycolosis to take place?
Definition
glucose
Term
How does fermentation create ATP?
Definition
In fermentation ATP only comes from glycolosis. Fermentative cells use NADH from glycolysis to reduce pyruvate & regenerate NAD which allws glycolysis to continue
Term
what is fermentation?
Definition
metabolic pathway in the cytoplasm in which NADH from glycolosis reduces pyruvate
Term
what is a gene?
Definition
sequence of DNA that codes for a specific protein or RNA molecule
Term
if given a single strand of DNA, how would you know what its complimentary strand would be?
Definition

adenine pairs with thymine

cytosine pairs with guanine

Term
what is a mutation in DNA
Definition
cancer
Term
how do nucleotides pair together in a DNA sequence?
Definition
hydrogen bonds
Term
what is apoptosis & why would something take its palce?
Definition

cell death

allows to restructure & form

(frog doens't have tail from tadpole- cancer cells peel away from sunburnt skin)

Term
what is the process of cellular reproduction?
Definition

late interphase - cell checks for compelte DNA reproduction

prophase - chromosomes consence becaome visible. spindle apparatus forms.

prometaphase - nuclear envelope fragments. spindle fibres attach to kinetochores

metaphase - chromosomes align along equator of cell

anaphase - sister chromatids separate and move to opposite poles of cell

telophase - nuclear membranes assemble around 2 daughter nuclei. Chromosomes decondense. Spindle disappears.

cytokinesis - division of the cytoplasm into 2 cells

Supporting users have an ad free experience!