Card Set Information
What is photosynthesis?
Process in which light energy is transformed intho chemical energy using CO2 & water.
The two stages of photosynthesis?
Dark Reaction and Light reaction
Where does light reaction occur in the chorplast?
Where does dark reactions in the chloroplast?
Occurs in stroma
What does the light reaction produce?
What does the dark reaction produce?
What is wavelength?
Distance between 2 adjancent crest?
What are phonton?
Fixed quanity of energy
What are electromagnetic spectrum?
the entire range of wavelengths or frequencies of electromagnetic radiation
The function of stomates is?
to control gas exchange.
The function of chlorphyll?
allows plants to absorb energy from light.
What are the three funtions of celluar divison?
Cell Replacement, Growth and Asexual reproduction.
What is asexual reproduction?
Creation of genetically identical offspring from a single parent.
What is sexual reproduction?
Creation of offspring from fusion of 2 haploid cells.
What is chromatin?
DNA in a loose state
What is chromosome?
DNA in a compact state
What is chromatid?
One DNA copy of a chromsome
What is centromere?
is a region on a chromosome that joins two sister chromatids
What is interphase?
Cells spend most of thier time in this phase and it controls the metabolism and growth of the cell.
What is mitosis?
Divison of a single nucleus into two genetically identical daughter nuclei
What is cytokinesis?
Divison of the cytoplasm to form new daughter cells
how does cytokinesis differ in plants and animals?
In plant cells vesicles first line up to form a new cell wall where as in animal cells the cell membrane pinches and divides
What is Cancer?
Malignant growth caused by abnormal and uncontrolled cell divison
What is a tumor?
Abnormally growing mass of cells
What is the diffrence of a bengin tumor and a malignat tumor?
The bengin tumor stay at its orginal site and the malginat spreads to other areas.
What is diploid?
Pair of chromosomes.
What is meiosis?
Divison of a diploid cell into 4 haploid cells
What are some forms of cancer treatment?
Sugery, radiation and chemotheraphy.
What is metastiasis?
Cancer cells spread through lymph and blood vessels to other parts of the body
What are haploid?
What is fertilzation?
Union of two haploid cellls to produce a zygote
What is a zygote?
a single cell which has formed as the result of the merging of an egg cell and asperm cell
What is homologous chromosmes?
2 Chromosomes of similar length,centromere postion and staning pattern
What is the diffrence of meiosis 1 and meisosis 2 ?
Meiosis 1 sepreates homolgous pairs and Meiosis 2 separates sister chromatids.
What is the diffrence between sex chromosomes and autosomes?
The sex chromosomes determines sex and the autosome chromosomes are not involved in determing the sex
What is nondisjunction?
Failure of separation at anaphase of mitosis or meiosis can be fatal due to the fact it usually fatal or results in disorders
What is polyploidy?
Contains more than 2 pairs of homologous chromosomes and can cause down syndrome.
What is heredity?
The transmisson of traits from one generation to the the next ex.flower color