Flashcards in Lab 3 - Cells & Cell Structure Deck (54)
Why are gene function and cell function coupled in prokaryotes?
The lack of membrane bound nuclei and organelles
For each type of lens, give the micrometers for each ocular division.
4x = 25 um
10x = 10 um
40x = 2.5um
100x = 1.0um
How many um for every mm/cm?
What does an Oscillatoria look like?
Long, worm like
What can you see additionally in the electron micrograph?
Polyglucan granules in the interthylakoidal space
What additional details can you see in the E. coli?
Ribosomes and infolding of the plasma membrane
Why do you think the fossils are classified as prokaryotes?
Do to the size and structure; they look too small to be a eukaryote and look similar to the size and shape of most prokaryotes
What can you see in more detail on the euglena?
Flagellum, golgi body + mitochondria and ER
What is the division of labor in Volvox colonies?
Some cells act as the reproductive cell
Do prokaryotes have a cytoskeleton, undergo endocytosis and exocytosis, have ribosomes?
Yes. No. Yes.
How does a muscle cell’s structural function relate to its function in the organism?
Muscle cells function in the cell is to generate movement and heat. In order to do this the muscle cell has myofibrils which allows the cell the strength is needs for movement/pumping
How does a mesophyll’s structural function relate to its function in the organism?
Mesophyll creates energy for the plant cell through photosynthesis. Palisade mesophyll is long and cylindrical in shape and spongy mesophyll is spaced out to allow for gas exchange
How does a sperm cell’s structural function relate to its function in the organism?
Sperm’s function in the body is for reproduction. Sperm cells have a flagellum which allows motility in order to fertilize an egg.
How does a mamalian blood cell’s structural relate to its function in the organism?
Mamalian red blood cell’s function in the organism is to transport oxygen. I can do this because it lacks a nucleus and other big organelles in order to allow room for haemoglobin
How does a muscle cell’s structural component relate to its function in the organism?
Neuron’s allow for chemical and electrical signalling. In order to do this neurons have myelin to help conduct those signals
How does an Adipocyte’s structural components relate to it’s function?
Adipocyte’s function in the organism is to store fat for use as energy and protection. Adipocyte’s have a non-centrally located nucleus and very little cytoplasm which allows it store large fat droplets
Where is simple squamous epithelium located? What is it’s main function?
Located: heart and blood vessels + air sacs in lungs
Function: filtration, diffusion and osmosis
Where is stratified squamous epithelium located? What is it’s function?
Location: superficial layer of skin, lines mouth and esophagus, pharynx and epiglottis
What is the location and function of the simple cuboidal epithelium?
Location: Surface of ovaries and lines the kidney tubules
Function: Secretion and absorption
Where is the simple columner epithelium located and where is it’s function?
Located: lines the gastrointestinal tract
Function: absorption and secretion
What is the function of the nucleus?
The function of the nucleus is store hereditary information as DNA and to coordinate cell activities
What is the function of the nucleolus?
The function of the nucleolus is to manufacture ribosomes
What is the function of the mitochondria?
The function of the mitochondria is to convert oxygen and nutrients such as glucose into ATP via cellular respiration
What is the function of the chloroplast?
The function of the chloroplast is to convert light energy into chemical energy via photosynthesis
What is the function of Rough endoplasmic reticulum?
The function of rough endoplasmic reticulum is to produce and process proteins that will be added to a membrane or excreted/secreted out of the cell
What is the function of the smooth endoplasmic reticulum?
The function of the smooth endoplasmic reticulum is to produce lipids, store glucose as glycogen and vice versa, as well as a role in detoxification of toxins
What is the function of the golgi body?
The function of the golgi body is to modify proteins and lipids that come from ER and prepare them for transport to other parts of the cell or export outside of the cell
What is the function of a lysosome?
The main function of a lysosome is to act as a compartment that houses enzymes that breakdown cellular materials that are no longer needed through hydrolysis
What is the function of the centriole?
The function of the centriole is to organize microtubules and aid in cell division by guiding the alignment of chromosomes as they separate during cell division