Organisms to Ecosystems Exam 4 Flashcards
Relies on recognition of pathogen associated molecular patterns by toll like receptors.
PAMP-triggered immunity
Disease resistance proteins
R proteins
Immune cells that recognize common pathogenic proteins and bind to these cells.
Toll-like receptors
Acellular proteins that bind the surface of pathogen cells in body fluids impending infection (neutralization) and creating aggregate formations.
Antibodies
Introduce antigens to a host to provoke a primary immune response, leading immunological memory which can quickly activate in case of reinforcement by the same pathogen.
Vaccines
Sequence of stages that an organism undergoes from one generation to the next generation for reproduction.
Life cycle
A mature haploid male or female germ cells which is able to unite with another of the opposite sex in sexual reproduction to form a zygote.
Gametes
A diploid cell resulting from the fusion of two haploid gametes. Or a fertilized egg cell that contains the genetic information of a new individual organism.
Zygote
The growth and development to form a mature organism.
Mitosis
The process of forming haploid gametes.
Meiosis
Where DNA is packaged?
Chromosomes
Are Mitosis and Meiosis haploids or diploids?
Mitosis- Diploid
Meiosis- Haploid
Sexually reproducing species have a typical number of chromosomes that occur as pairs.
Homologous pairs
How many sets of chromosomes do the haploid and diploid stages have.
Haploid - one set
Diploid - two sets
Gametes where haploid formed (2n—>n)
Meiosis
Retains the number of chromosomes during growth (2n—>2n)
Mitosis
Multicellular haploid and diploid stages alternate from generation to generation.
Alternation of generations
Multicellular diploid stage that produces haploid spores through meiosis.
Sporophyte
Spores divide by mitosis and a haploid multicellular organism.
Gametophyte
Either haploid or diploid cells can divide by _______ but only a diploid cell can undergo _______ to from ______ cells.
Mitosis
Meiosis
Haploid
Where the cytoplasms of tow parent mycelia fuse.
Plasmogamy
Where the haploid nuclei of two parents fuse to. produce diploid cells
Karyogamy
Similarities in the life cycle of fungi and slime molds.
Convergent evolution
Single individual passes copies of all its genes to its offspring as the sole parent.
Asexual reproduction
Produces offspring that have unique combinations of genes inherited from biological parents.
Sexual reproduction
One chromosome duplication, followed by two rounds of cell division, resulting in cells with half the number of chromosomes.
Meiosis
One chromosome duplication followed by one cell division, resulting in cells with the same number of chromosomes as the parent cells.
Mitosis
Offspring arise from mature fragments of the parent plant.
Vegetative reproductions
Vegetative buds or other parts of a plant can detach and develop into new offspring.
Fragmentation
Some plants can produce mature seed without pollination or fertilization. The embryo develops from a diploid cell in the ovule.
Apomix
New individuals are formed as outgrowths of an existing individual.
Budding
A parent splits and separates into two individuals of about equal size.
Fission
Breaking apart of the body into several pieces that develop into new organisms through regeneration.
Fragmentation
Regrowth of missing body parts.
Regeneration
Offspring develop from unfertilized eggs.
Parthenogenesis
What is a disadvantage of asexual reproduction?
There is no genetic variation produced.
What is an advantage of sexual reproduction?
It generates variation in offspring and populations.
A form of sexual reproduction in which all gametes are the same size.
Isogamy
A form of sexual reproduction in which gametes have different sizes.
Anisogamy
Plant species have separate individuals with male or female parts.
Dioecious “two houses”
A sexual reproductive system where each individual is either male or female.
Gonochorism
An adaptation in which one individual has both male and female reproductive systems symotaneously or sequentially.
Hermanaphroditism
Have both male and female parts on the same individual plant.
Monoecious “one house”