Lab Exam 1 Flashcards
A lipid bilayer that surrounds the cell. Controls the transport of substance into and out of the cell.
Plasma membrane
A rigid mesh work of fibers that completely surrounds the cell in plants. Helps provide rigidity to the plant body.
Cell wall
The most conspicuous oragnelle in the eukaryotic cell. Directs the synthesis of proteins and contains nearly all of the cell’s genetic material. Sometimes called control center.
Nucleus
Double membrane - bound oraganelle that is the site of ATP synthesis called cellular respiration.
Mitochondrion
A series of flattened sacs that is continuous with the nuclear membrane. Is the site of lipid synthesis and is the organelle where some proteins are packaged and subsequently shipped to the golgi apparatus.
Endoplasmic reticulum
The site where proteins received from the ER are further modified and shipped to other sites in the cell.
Golgi apparatus
A green colored, disk shaped organelle that is the site of photosynthesis.
Chloroplasts
When the chloroplasts of some cells move around in a circular motion. Caused by the changes in the shape of filaments of protein called actin.
Cyclosis
The clumping of cell cytoplasm and organelles as a result of dehydration. Occurs when cells are surrounded by solutions of high osmolariy.
Plasmolysis
Stage where the DNA is replicated and the cell grows in anticipation of division.
Interphase
Stage where it looks like a typical phase. nucleus with nucleolus is visible, chromosomes aren’t visible, DNA replication occurs.
Interphase
Stage where Nuclear membrane disintegrates, chromosomes become visible and now consist of two sister chromatids, spindle apparatus is formed.
Prophase
Stage where spindle apparatus with fibers is found at opposite ends of the cell., chromosomes align along the the equatorial plate (ccenter)of the cell, spindle fibers attach to centromeres of each chromatid.
Metaphase
Stage where the spindle fibers begin to contract, chromatids pulled apart. Chromatids (now chromosomes) migrate toward opposite ends of the cell.
Anaphase
Stage where the chromosomes are in complete migration, the chromosomes decondense and the nuclei form around each set of chromosomes. The sspindle apparatus and fibers disintegrate and cytokinesis occurs.
Telophase
