Shared Flashcard Set

Details

Biology Final Review Semester II 2012-2013
Biology Final Review Semester II 2012-2013
77
Biology
9th Grade
05/07/2013

Additional Biology Flashcards

 


 

Cards

Term
What is the ultimate source of energy for all living things?
Definition
The sun
Term
What is photosynthesis?
Definition
Process plants use to capture light energy and make complex molecules
Term
What are heterotrophs?
Definition
organisms that consume other organisms for energy
Term
Why is chlorophyll green?
Definition
it reflects green light (photons)
Term
What causes the electrons of some chlorophyll to be raised to a higher level?
Definition
chlorophyll absorbs a photon of light
Term
What do electrons enter when they are raised to a higher level?
Definition
Electron transport chain
Term
Where does oxygen gas come from during photosynthesis?
Definition
water
Term
How has photosynthesis affected the atmosphere?
Definition
air is rich in oxygen gas
Term
Why is carbon fixation in plants important?
Definition
all organic molecules have carbon atoms that came from carbon dioxide and was fixed by plants
Term
What happens to the excited electrons from Photosystem I?
Definition
They are captured by NADPH.
Term
What are the products of the light reactions used in the dark reactions?
Definition
ATP and NADPH.
Term
What is the Calvin cycle?
Definition
the series of reactions in the stroma that create the complex carbohydrates needed for energy and growth.
Term
Where does the Calvin cycle occur?
Definition
Stroma
Term
Where does the energy to form ATP come from?
Definition
Glucose
Term
How does light intensity affect photosynthesis?
Definition
Increases in response to increasing light intensity but only to a certain point.
Term
What is ATP?
Definition
Essential energy for a cell to perform the task of necessary for life.
Term
What is cellular respiration?
Definition
Glycolysis, Electron Transport Chain, and Krebs Cycle.
Term
A connection between cellular respiration and photosynthesis?
Definition
They are opposite equations.
Term
What is acetyl CoA?
Definition
It formed from the breakdown of pyruvate,enters the Krebs cycle,and is produced with carbon dioxide and NADH.
Term
What happens to glucose in glycolysis?
Definition
A molecule of glucose is split, two molecules of pyruvate (pyruvic acid) are made and some ATP is produced.
Term
What are the products of glycolysis?
Definition
2 pyruvate
Term
What is fermentation?
Definition
The process that takes place when organic compounds are broken down in the absence of oxygen.
Term
What is the difference between glycolysis and aerobic respiration?
Definition
Glycolysis occurs in the absence of oxygen, while aerobic respiration requires oxygen.
Term
What is formed in muscles when oxygen isn’t present?
Definition
lactic acid
Term
what is the location of Krebs cycle & Electron Transport Chain?
Definition
mitochondrion
Term
What are the parts of cellular respiration?
Definition
Glycolysis & aerobic or anerobic respiration
Term
What is the end product of the Electron Transport Chain?
Definition
water
Term
what is the name of equation, and Molecule A?
C6 H12O6 + 6O2 + ADP + P ® 6CO2 + 6 H2O + MOLECULE A
Definition
Cellular Respiration and Molecule A is ATP.
Term
What is heredity?
Definition
passing traits from parents to offspring
Term
Who was the father of genetics?
Definition
Gregor Mendel
Term
What is meant by phenotype?
Definition
the physical appearance of a trait
Term
What is the difference between heterozygous and homozygous?
Definition
Different alleles for a trait. 2 identical alleles for a trait. (2 alleles that are the same)
Term
What is the difference between recessive and dominant.
Definition
One allele masks the other it is dominant. Recessive is the allele that is masked.
Term
What is the law of independent assortment?
Definition
the inheritance of one gene has no effect on the inheritance of another gene
Term
What is a Punnett square?
Definition
A device used to determine the probable outcome of genetic crosses.
Term
What is genetics?
Definition
the study of heredity
Term
Which of Mendel’s laws states that “alleles separate from each other during meiosis I”.
Definition
law of segregation
Term
Complete a monohybrid cross and give phenotypic and genotypic ratios.
Heterozygous x heterozygous
Homozygous recessive x heterozygous
Definition
You have to be able to do both crosses.
Term
What is a test cross?
Definition
cross unknown genotype of a dominant phenotype with a homozygous recessive
Term
List the parts of a DNA nucleotide.
Definition
Sugar, phosphate, nitrogen base
Term
Function of DNA?
Definition
store and transmit genetic information and regulate the production proteins
Term
DNA is made of long chains of …
Definition
Nucleotides
Term
Who established the structure of DNA?
Definition
Watson and Crick
Term
What holds the two strands of the double helix together?
Definition
Hydrogen bonds
Term
What are the Complementary bases to ACTTTACG.
Definition
TGAAATGC
Term
What is the Role of DNA polymerase in replication.
Definition
Add nucleotides
Term
What is the Differences between RNA and DNA?
Definition
(RNA BASE)Uracil,(SUGAR)Deoxyribose, ribose, (STRAND) Rna 1 Dna 2
Term
What is the Role of mRNA in transcription?
Definition
mRNA takes DNA “instructions” to ribosomes
Term
What is a codon?
Definition
three nucleotides on an mRNA molecule that code for an amino acid
Term
Be able to use a genetic code decoder to determine amino acid from mRNA codon
Definition
three sided decoder
Term
DNA from mRNA (AUGCCCACG)
Definition
Term
What is tRNA’s role in translation?
Definition
brings amino acids to ribosomes
Term
What is a sex-linked trait?
Definition
a trait that is linked to a sex chromosome
Term
Sex-linked traits are more common in which gender?
Definition
Male
Term
What is an example of a sex-linked blood disease?
Definition
hemophilia
Term
What is a trait in humans caused by multiple alleles?
Definition
Blood type
Term
What is a pedigree?
Definition
a diagram of several generations of a family and their genetic traits
Term
Genotype of a colorblind female?
Definition
XcXc
Term
What are traits with a range of phenotypes?
Definition
polygenic traits
Term
What amino acid cannot be digested in a person with phenylketonuria?
Definition
phenylalanine
Term
What disorder affects skin pigment?
Definition
albinism
Term
What disorder is dominant?
Definition
Huntington’s disease
Term
How do autotrophs obtain energy?
Definition
Photosynthesis
Term
What is taxonomy?
Definition
The study of classifying organisms.
Term
What are the final two levels of classification and how are they written?
Definition
Genus species
Term
What is the correct order of hierarchy? Largest to smallest.
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 is ecology?
Definition
The study of organisms in relationship to their environment. Abiotic/ Biotic factors
Term
What is a habitat?
Definition
Where an organism lives.
Term
What is a population?
Definition
organisms of the same species, in the same area, at the same time
Term
Understand how to read different types of graphs
Definition
Term
What is a species?
Definition
a specific organism
Term
Give an example of a relationship between a producer and a consumer?
Definition
cow eating grass
Term
be able to identify herbivores
Definition
cow, mouse, etc
Term
What is commensalism?
Definition
one organism benefits the other is not harmed.
Term
In the nitrogen cycle, what uses do plants use nitrates and nitrites to form
Definition
amino acids
Term
What is a biome?
Definition
Major ecosystems that occur over wide areas of land
Supporting users have an ad free experience!