POB Lab 3
True or False: Mitochondria are present in both potato roots and potato leaves
TRUE
Parts of a prokaryotic cell. (6 parts)
1: ribosomes 2: plasma membrane 3: fimbriae 4: nucleoid 5: cell wall 6: capsule
A patient is checked into the hospital and is diagnosed with a bacterial infection. the bacteria found are rod-shaped. Which of the following could be the bacteria causing the infection? A: Streptobacillus molniformis B: Spirillum minus C: Streptococcus pneumoniae
A
What all should be included on specimen drawings? A: all cells within the field of view B: several cells to show scale within the field of view C: organelles designed by your manual and instructor D: specimen name
A, C, & D
True or False: Eukaryotes have membrane-bound organelles
TRUE. prokaryotes do not
True or False: You may place specimen in your mouth to see if it alters the reaction with the stain/indicators
FALSE. lab specimens are not for human consumption or ingestion
True or False: Animals have cell walls
FALSE. only plant cells have cell walls
Classify the following characteristics to describe the differences between plant and animal cells. 1- cell walls to to provide structure and support 2- lysosomes to provide intracellular digestion 3- mitochondria to undergo respiration and provide energy 4- plasma membrane to regulate the passage of molecules into and out of cells 5- a large central vacuole for water storage 6- centrioles to help form basal bodies 7- chloroplasts to undergo photosynthesis
Animal: 2,3,4,6 Plant: 1,3,4,5,7
Which of the following structures is present in prokaryotes? A: mitochondria B: ribosomes C: nucleus
B
Onion and potato are both underground structures for plants. What is their functions? A: to prevent soil erosion B: to store energy for later use C: to produce energy through photosynthesis D: to make the plant difficult to herbivores to dislosge
B.
True or False: Eukaryotes make up most of the cellular life on earth
FALSE. prokaryotes make up the majority of the earths cellular material
Which of the following slides were not considered safe to clean and reuse after viewing? A: potato B: human cheek cell C: mixed bacteria D: Elodea
B. human body products are considered to be biohazardoous material and must follow specific disposal protocols
Bacterial cells are prokaryotic; unlike a typical eukaryotic cell, they... A: have a smaller nucleus B: lack a nucleus C: lack a plasma membrane D: have more internal membranous compartments
B. prokaryotic cells lack many of the internal structures found in eukaryotic cells
True or False: Ribosomes build starch from glucose
FALSE. ribosomes translate RNA to proteins
Fatty acids are not being broken down. Which organelle is most likely failing to function correctly? A: golgi apparatus B: mitochondrion C: lysosome D: ribosome
C. lysosomes remove unwanted or unneeded material from the cell
Which is the function of a bacterium's capsule? A: DNA storage B: propulsion C: protein synthesis D: protection
D. capsule is on the exterior
True or False: You must draw everything that you see in your field of view
FALSE. include just enough detail for the context of the specimen
True or False: You may view the microscope specimens for Lab 3 in whatever order you like and move through them as quickly as possible
FALSE. instructor must check your images as you complete them
Iodine turns _______ in the presence of _________
blue, starch
What is a difference between eukaryotic and prokaryotic organisms?
eukaryotes include membrane-bound organelles and nucleus while prokaryotes lack them. eukaryotes are multicellular and prokaryotes are usually unicellular. eukaryotes have a domain of eukarya while prokaryotes have domains of bacteria and archaea.
What 5 eukaryotic cells were observed?
onion, potato, elodea, yeast, & cheek
