Bio 141 Lab Exam 1
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| show | Cellular communication between cells
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| show | insect ringers (75% NaCl), isotonic to internal environment of insects
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| What 3 variables were analyzed for influence on starch activity? | show 🗑
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| show | Mutualistic symbiosis; Trichtonympha
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| show | No
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| Key parts about a stereoscopic/dissecting microscope | show 🗑
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| How was the reaction rate of amylase determined? | show 🗑
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| What organelles are abundant in muscle cells? | show 🗑
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| show | see pictures
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| Stereoscopic Microscope Identification | show 🗑
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| show | Stains cells (in epithelial cell demo)
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| show | Control variable: a variable kept constant between treatment groups
Control treatment: level oft treatment that serves as a benchmark, usually not manipulated
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| show | all
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| What are enzymes? What makes up enzyme substrate complex? | show 🗑
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| What criteria must exist in a hypothesis | show 🗑
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| show | One variable that is measure/counted or observed in response to the experimental conditions
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| Independent variable definition | show 🗑
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| Controlled variable definition | show 🗑
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| show | The value set for the independent variable
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| show | the independent variable is held at an established level or is omitted. It serves as a benchmark that allows the scientist to decide whether the predicted effect is really due to the independent variable
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| Prediction | show 🗑
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| show | Table: Not a statement; at the top
Figure: A statement; below figure
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| show | Line: continuous quantitative data; changes in quantity of a variable over their range
Bar: represent separate or discontinuous groups or nonnumerical groups
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| show | Tentative explanation for an observation
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| Compound Light Microscope function | show 🗑
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| show | used to focus light from the lamp through the specimen to be viewed
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| show | lens in the eyepiece (10x)
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| show | inter-pupillary distance
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| show | Iris diaphragm
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| What does catechol oxidase require to function? | show 🗑
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| How can you detect whether or not an inhibitor is competitive? | show 🗑
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| show | Because the reaction begins when the substrate and enzyme come into contact
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| Identify an amoeba. How does it digest food? | show 🗑
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| show | 3
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| What is the distance between occulars? | show 🗑
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| Why does the graph level off at higher concentrations? | show 🗑
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| Is compound microscope a light or electron microscope? | show 🗑
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| show | depth of field decreases
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| How do enzymes catalyze reactions? | show 🗑
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| Scientists are concerned about the effect of sulfur dioxide pollution on soybean production. 24 plants were treated to varying amounts of sulfur dioxide while the other 24 plants were exposed to filtered air. A) Indep. variable? B) Dep. variable C)control | show 🗑
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| What is the difference between aggregate and a colony? | show 🗑
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| Which one has a cell wall? 1) Protococcus 2) Scenedesmus 3) Amoeba 4) Trichonympha | show 🗑
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| show | cyclosis
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| show | ---
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| show | I2KI
If starch present, we will see color change (gold/brown --> black/blue)
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| Which one(s) have/has chloroplast? 1) Scendesmus 2) Volvox 3) Elodea 4) Protococcus | show 🗑
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| What inhibits catechol oxidase? Is it competitive or non-competitive? | show 🗑
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| What 2 enzymes were studied in the enzyme lab? | show 🗑
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| What color does starch turn in I2KI? | show 🗑
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| show | Cofactors are nonprotein substances that the enzyme needs to bond in order for the enzyme to function
Coenzymes are organic cofactors
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| show | 1. Yes
2. working distance
3. 10x
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| show | --
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| Identify trychonymoha. What is it's locomotive method? | show 🗑
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| show | Electron microscope
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| What is the depth of field? | show 🗑
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| What does elodea look like? With what microscope do you look at it through? | show 🗑
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| Which type of microscope focuses a beam of electrons through a specimen and magnifies objects greatly? (100-1000x) | show 🗑
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| Which microscope is used for studying cells and tissues? | show 🗑
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| show | Cell membrane, ectoplasm (inside cell membrane), endoplasm, contractile vacuole, food vacuole, nucleus, pseudopodia
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| What are the parts of trichonympha? Where do they live? What is the solution prepared for them? | show 🗑
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| show | Green algae, "Moss"; aggregate; you see 2-4 clusters of cell walled, cell membraned green bubbles
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| show | Colonial, groups of 4-8
Spines, cell wall, vacuole, chloroplast, nucleus (looks like a space alien/snowman)
aquatic green algae
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| show | Not colonial, multicellular
Somatic cells, cytoplasmic connections, flagella, cell walls, nuclei, daughter colonies (product of sexual reproduction)
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| show | Outside of animals, protect animals from water loss, mechanical injury, foreign invaders, and line interior cavities and ducts in animals
Parts: nucleus, cytoplasm, cell membrane
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| Define enzymes | show 🗑
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| Substrate | show 🗑
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| What is an activator? | show 🗑
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| What is a cofactor? | show 🗑
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| What is an inhibitor? | show 🗑
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| What were the two enzymes tested in the enzyme experiment? | show 🗑
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| show | Catechol + O2 --> (catechol oxidase)--> Benzoquinone + H2O
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| What is responsible for the browning of fruits? | show 🗑
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| What was the competitor? Was it competitive or non competitive? | show 🗑
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| show | Copper
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