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64 Cards in this Set
- Front
- Back
What happens during Interphase
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-Preparation and growth for reproduction
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How long does the cell spend in this stage
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- 90% of the time
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What happens in Gap 1
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-cells are doing normal jobs -increases in size and makes proteins and molecules necessary for the cell to function-some organelles duplicated
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What happens in Synthesis
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-DNA replicates
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What controls synthesis
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-enzymes control that process
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What happens Gap 2
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-Cells are preparing to divide-continues to grow and make enough proteins and duplicate organelles for 2 daughter cells after -DNA is in chromatin form.
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What is RNA and what does it do
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-The RNA is a molecule and the DNA get copied into the RNA
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What is Mitosis
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-Process of dividing the cell
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What are the stages of mitosis
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- Prophase, Metaphase, Anaphase, Telophase
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What is Cytokinesis
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- Division of cytoplasm and other organelle
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What structures are in Prophase
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-Spindle fibers, centrioles, replicated chromosomes, nuclear membrane (breaks down), centromere, nucleolus.
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What happens in Prophase
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-replicated chromosomes coil, condensing•The nucleolus and nuclear membrane breaks down•The spindles attach to the chromosomes..
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What happens in Metaphase
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-The chromosomes line up in the center of the cell with the assistance of the spindle fibers.
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What occurs in Anaphase
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-Sister Chromatids separate and are pulled to the opposite poles of the cell by the spindles fibers and centrioles.
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What happens in Telophase/cytokinesis
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-Spindle fibers disappear and the nuclear membrane reforms around the chromosomes. The nucleolus reforms in each membrane= 2 nuclei. Then cleavage furrow appears and cell splits.
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What Structures are in telophase/cytokinesis
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- nuclear membrane reforms,
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Centrioles
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•organelle which assists w organizing DNA during mitosis
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What is the cleavage furrow
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-the pinch in the cell that appears when the cell is dividing.
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DNA stands for___
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•Deoxyribonucleic Acid
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Chromatin
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•uncoiled DNA (noodle/uncondensed form)
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Chromatin can’t be seen under_____
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•light microscope(It’s too thin)
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Chromosomes
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•coiled (condensed) DNA
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Sister Chromatids
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•1/2 of replicated chromosome
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Daughter Chromosomes
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•2 former sister chromatids after mitosis
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homologous Chromosomes
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•pair of chromosomes w genes for the same traits w different allele of the gene
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Allele
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•diff versions of gene (ex.blue eyes vs.green eyes)
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Haploid
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•half the chromosome number
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Diploid
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•full set of chromosomes
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Gametes
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•sex cells(egg and sperm)
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Somatic
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•reg body cells
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Histones |
enzyme that chromatin wraps around |
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Diaphragm
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•adjective opening that regulates the amount of light
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Stage
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•supported slide
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stage clips
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•holds slide to stage
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Low power objective lens=what total mag
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•40x
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med power objective lens= what total mag
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•100x
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ocular lens= what mag
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•10x times
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High power objective lens= what total mag
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•400x
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Micrometers = how many um
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• 1mm=1000um
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How do u calculate size of organism across of FOV
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•estimate how many times the organism will fit across FOV and divide by dFOV
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Binary Fission
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•cell division that occurs in prokaryotes•like mitosis lite version
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Mitosis
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•occurs in unicellular Eukaryotes
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Budding
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•new organism develops from a bud on the parent •identical except smaller than parent cell
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Fragmentation
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•parent organism is broken into different fragments which grow into new organisms
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Vegetative reproduction
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variety of asexual reproduction methods used by plants |
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Regeneration
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process of restoring and growing after damage
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Spore formation
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•occurs in non flowering plants, fungi, green algae• spores are produced which then develop into offspring identical to parent
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Grafting
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inserting a twig into the stock to create a new cross breed
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What are advantages and disadvantages to organisms Asexually reproducing
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-faster-more efficient-no mate needed
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Low power =______ dfov |
4mm |
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Low power =______ dfov |
4mm |
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Med power=______ dfov |
1.6mm |
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Low power =______ dfov |
4mm |
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Med power=______ dfov |
1.6mm |
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High power=_______ dfov |
.4 |
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u= |
Micro |
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u= |
Micro |
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Human has _____ chromosomes |
46 |
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Why does a cell divide |
-replace worn out/dead cells -growth -reproduce |
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Why does a cell divide |
-replace worn out/dead cells -growth -reproduce |
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Chrom means |
Colour |
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Why does a cell divide |
-replace worn out/dead cells -growth -reproduce |
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Chrom means |
Colour |
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Ex. Of veg reproduction |
Bulbs, runners, sprouts |