Final Exam Review Flashcards
Cell membranes are made up of…
Phospholipids, a type of lipid
Cell Walls are made up of…
Cellulose, a carbohydrate
Where are proteins made?
Ribosomes and the Rough ER
Where are Lipids made?
The Smooth ER
DNA is stored and made up of…
Stored in the nucleus and is a nucleic acid
RNA is used in and made up of…
A nucleic acid and is used in protein synthesis
mRNA
carries the genetic code from nucleus to ribosomes
tRNA
brings the amino acids which link together to bulid protein
Reasons for Mitosis
Growth, Repair, and Asexual Reproduction
Mitosis involves…
involves one parent
Mitosis produces…
two identical daughter cells that are diploid (two copies of each gene) with 46 chromosomes
Cell Cycle
Interphase-Prophase-Metaphase-Anaphase-Telophase-Cytoinesis
Interphase
DNA and organelles are copied/replicated
Prophase
DNA is wound up unro chromosomes, centriloes move to opposite side of the cell, nuclear membrane disappears, spindle fibers form
Metaphase
Chromosomes line up at the middle of the cell
Anaphase
Chromosomes are pulled apart to the opposite ends of the cell
Telophase
Cleavage furrow (animal cells) form and nuclei are formed
Cytokinesis
Cell splits
Meiosis only occurs to produce…
sex cell or gametes (male=sperm, females=eggs)
Gametes only have…
one copy of each gene are called haploid (half DNA, 23 chromosomes)
Meiosis produces…
four uniques daughter cells that are haploid, due to crossing-over
When a male and female gamete combine…
via fertilization and a diploid zygote is made (one gene from each parent)
How many pairs of chromosomes are in each cell?
23 pairs or 46 chromosomes
Who was the father of genetics
Gregor Mendel, using pea plants
Mendel’s Three Laws
- two genes for each trait
- one gene from each parent
- dominatnt beats recessive
23rd chromosomes in humans are…
sex chromosomes (xx=female xy=male)
Genotype
letter or gene you have for a trait (TT Tt tt)
Phenotypr
how genes make you look (ex: brown hair, normal height)