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64 Cards in this Set

  • Front
  • Back
What happens during Interphase
-Preparation and growth for reproduction
How long does the cell spend in this stage
- 90% of the time
What happens in Gap 1
-cells are doing normal jobs -increases in size and makes proteins and molecules necessary for the cell to function-some organelles duplicated
What happens in Synthesis
-DNA replicates
What controls synthesis
-enzymes control that process
What happens Gap 2
-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.
What is RNA and what does it do
-The RNA is a molecule and the DNA get copied into the RNA
What is Mitosis
-Process of dividing the cell
What are the stages of mitosis
- Prophase, Metaphase, Anaphase, Telophase
What is Cytokinesis
- Division of cytoplasm and other organelle
What structures are in Prophase
-Spindle fibers, centrioles, replicated chromosomes, nuclear membrane (breaks down), centromere, nucleolus.
What happens in Prophase
-replicated chromosomes coil, condensing•The nucleolus and nuclear membrane breaks down•The spindles attach to the chromosomes..
What happens in Metaphase
-The chromosomes line up in the center of the cell with the assistance of the spindle fibers.
What occurs in Anaphase
-Sister Chromatids separate and are pulled to the opposite poles of the cell by the spindles fibers and centrioles.
What happens in Telophase/cytokinesis
-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.
What Structures are in telophase/cytokinesis
- nuclear membrane reforms,
Centrioles
•organelle which assists w organizing DNA during mitosis
What is the cleavage furrow
-the pinch in the cell that appears when the cell is dividing.
DNA stands for___
•Deoxyribonucleic Acid
Chromatin
•uncoiled DNA (noodle/uncondensed form)
Chromatin can’t be seen under_____
•light microscope(It’s too thin)
Chromosomes
•coiled (condensed) DNA
Sister Chromatids
•1/2 of replicated chromosome
Daughter Chromosomes
•2 former sister chromatids after mitosis
homologous Chromosomes
•pair of chromosomes w genes for the same traits w different allele of the gene
Allele
•diff versions of gene (ex.blue eyes vs.green eyes)
Haploid
•half the chromosome number
Diploid
•full set of chromosomes
Gametes
•sex cells(egg and sperm)
Somatic
•reg body cells

Histones

enzyme that chromatin wraps around

Diaphragm
•adjective opening that regulates the amount of light
Stage
•supported slide
stage clips
•holds slide to stage
Low power objective lens=what total mag
•40x
med power objective lens= what total mag
•100x
ocular lens= what mag
•10x times
High power objective lens= what total mag
•400x
Micrometers = how many um
• 1mm=1000um
How do u calculate size of organism across of FOV
•estimate how many times the organism will fit across FOV and divide by dFOV
Binary Fission
•cell division that occurs in prokaryotes•like mitosis lite version
Mitosis
•occurs in unicellular Eukaryotes
Budding
•new organism develops from a bud on the parent •identical except smaller than parent cell
Fragmentation
•parent organism is broken into different fragments which grow into new organisms
Vegetative reproduction

variety of asexual reproduction methods used by plants

Regeneration
process of restoring and growing after damage
Spore formation
•occurs in non flowering plants, fungi, green algae• spores are produced which then develop into offspring identical to parent
Grafting
inserting a twig into the stock to create a new cross breed
What are advantages and disadvantages to organisms Asexually reproducing
-faster-more efficient-no mate needed

Low power =______ dfov

4mm

Low power =______ dfov

4mm

Med power=______ dfov

1.6mm

Low power =______ dfov

4mm

Med power=______ dfov

1.6mm

High power=_______ dfov

.4

u=

Micro

u=

Micro

Human has _____ chromosomes

46

Why does a cell divide

-replace worn out/dead cells


-growth


-reproduce

Why does a cell divide

-replace worn out/dead cells


-growth


-reproduce

Chrom means

Colour

Why does a cell divide

-replace worn out/dead cells


-growth


-reproduce

Chrom means

Colour

Ex. Of veg reproduction

Bulbs, runners, sprouts