Microbiology

Respiration is

A catabolic process

Based on the following graph of enzyme activity, what enzymatic process is a occuring at 45°C?

Denaturation

A bacterial cell is 0.01% salt, and placed in a 5% salt solution. With respect to tonicity it I cama the solution is _____ to the cell

Hypertonic

Examine the dichotomous key. Based upon this key, if you were to encounter an organism that has symmetry, a defined digestive tract and is not segmented, you would have encountered what?

Something belonging to Phylum Mollusca

Enzymes are said to speed up chemical reactions, however, this is not in reference to the time it takes for a reaction to proceed so much as help the chemical reactions occur in the first place. By which of the following mechanisms will enzymes encourage chemical reactions to take place. Select all that apply.

Strain substrate bonds Shield/secure substrates Orient substrates

To obtain a pure colony, a lab technician would employ the following technique

Streak plate

The dark reactions of photosynthesis generate

Sugar and O2

Some fungi are capable of dimorphic change, alternating between two physical forms, the cue for this change is

Temperature

Which of the following statements are tenets of cell theory. Select all that apply.

The cell is the basic unit of life Cells are formed from pre existing cells All things living are composed of cells

In the following "activation energy" diagram explain what is depicted by "D".

The total change in energy

When examining a chemical reaction, which of the following occurrences would be present in an oxydative reaction? Select all that apply.

Transfer of hydrogen Transfer of electrons Addition of oxygen

According to the endosymbiotic theory, larger bacterial cells lost their cell walls and engulfed smaller bacterial cells, which gave rise to early eukaryotes.

True

When graphing data, the independent variable, is the

X access

For every one glucose going into Glycolysis, the net ATP gain is

2

What is the total magnification of an object observed under a microscope with a 10x ocular and a 40x objective lens

400x

Examine the figure below. What wavelength of light is most effective in driving photosynthesis?

450

Calculate the mode of the following series of numbers: 1, 3, 5, 5, 6, 8, 22, and 10

5

Which of the following units are equivalent? select all that apply

5mm .5cm

Identify the following structures of the plasma membrane

A: extracellular space B: intracellular space C: hydrophilic head D: hydrophobic tails

When designing experiments, scientists to examine the relationship between independent and dependent variables. In a study comparing TV violence and aggression in teenagers, identify the dependent variable

Aggression

Match the following organisms based on their description into the correct organism group

Bacteria - single cell, contains peptidoglycan, has flagella Virus - non-cellular, contains RNA, has spike proteins Plant- multicellular, has cell wall made of cellulose and amyotrophic Fungi- multicellular, has cell wall made of chitin, heterotrophic Archae- single celled, NO peptidoglycan, lives in volcanic vent

Recall enzymes and the effect of inhibitors. Which of the following is true in the case of non competitive inhibitors. Select all that apply

Binding to the active site of enzyme Forms of cellular regulation

In a robot cellular respiration, which generates more ATP, substrate level phosphorylation or cheimiosmosis?

Chemiosmosis

Which of the following bacteria genera have endospores? Select all that apply

Clostridium Bacillus

Cell membranes are composed of phospholipids that have head and tail regions. Which of the following characteristics related to the phospholipid head?

Contains phosphate Is hydrophilic

Which of the following terms a describes the sharpness of an image, its ability to stand out from the background?

Contrast

There are 3 problems regarding light that's complicate obtaining a good image with a microscope. We can correct for all of them except

Diffusion

Which of the following statements regarding the fusion is false?

Diffusion occurs when particles spread from areas where there is low concentration to areas where there is high concentration

Based on the fluid descriptions across the membrane match each type of movement with the appropriate direction Intracellular fluid: 10% salt Extracellular fluid: 20% salt

Diffusion: Moves from outside to in Osmosis: Moves from inside to out

There is no net movement across the membrane in a dynamic equilibrium, but individual molecules or atoms continue to move randomly across a membrane. This describes,

Dynamic equilibrium

Which of the following represents the 1st and 2nd laws of thermodynamics?

Energy can be transferred and transformed, in processes leading to increased entropy

Hypotheses must be observable and testable. Which of the following would be considered good hypotheses? Select all that apply.

If skin cancer is related to UV light, than people with a high exposure to UV light will have a higher frequency of skin cancer If the rate of photosynthesis is related to wave lengths of light, then exposing a plant 2 different colors of light will produce different amounts of oxygen Chocolate may cause pimples

Two solutions are separated by a membrane that is permeable to water and glucose, but not sucrose. Side A is half filled with a solution of 2M sucrose and 1M glucose. Side B is half filled with 1M sucrose and 2M glucose In terms of tonicity, Side A is _____ to Side B

Isotonic

What is the significance of the SEM for the standard error of the mean?

It represents the accuracy

Which of the following taxonomic levels is the most broad?

Kingdom

The metabolic process that generates the most partial energies (molecules other than ATP) for the electron transport chain is

Kreb' Cycle

Given the following data set what would be the most effective way to present it?

Leave it as a table

Which of the following represents the activation energy for reverse reaction (C+D making A+B) without enzymes present reaction in the following diagram?

Line E

Energy required to start (catalyze) a chemical reaction comes from

Molecular collision

Sitting in class sweating profusely, you notice that the door seems to be closed every time you perspire in class. This is most closely associated with which step in the scientific method?

Observation

All of the following are part of a prokaryotic cell except

Organelles, like an endoplasmic reticulum

Identify, based on the example, how the molecule is a moving. After sitting in the bath tub for hours, your fingers start to look like prunes.

Osmosis

Which of the following are true of enzymes. Select all that apply.

Reusable composed of protein, specific activity is dependent upon reaction environment unchanged by reaction

When converting Kg to cg which direction will the decimal move?

Right

Imagine the U tube below contains the following solutions. Match each pair of solutions with the net direction of resulting water movement

Side A: 5% salt solution, Side B: 15% salt solution (Net flow towards A) Side A: 10% sugar solution, Side B: 1% sugar solution (net flow towards B) Side A: 4% salt solution, Side B: 4% sugar solution (no net flow)

The usefulness of fermentation as a means of deriving energy is limited because

The end products are toxic to the producer

Part of this chapter involves learning to read data plots to determine the relationship of the model. Based upon the following graph select the appropriate model.

Unable to determine relationship

Order be following units from smallest to largest

ng, cg, dog, g, kg