Why will alcoholic fermentation preserve the nutritive value of fruit juice or grains in the absence of refrigeration? alcoholic fermentation will lower the pH to -1 thus killing all microbes who would use up the nutrients in the fruit juice of grain the ethanol/alcohol inhibits the growth of spoilage microbes which would destroy the nutritive value of the plant juice or grain O it won't- this is a trick question! O alcoholic fermentation increases the salt concentration which in turn inhibits growth of spoilage microbes

e novo synthesis of building blocks always requires Group of answer choices A and B A. precursor metabolites C. nitrogen assimilation A and C B. CO2 fixation

Which of the following is true about the organism which grew at both 37°C and 4°C in the figure below? 4°C 37°C 64°C 25°C This organism will not survive in the human body O The organism can be propagated through refrigerated food O Heating food to 350 degrees Fahrenheit (or 176 degrees C) in the oven will not kill the microorgansim The organism can grow in the human body

1 Complete the following paragraph to describe the difference between heterotrophs and autotrophs. Responses may be used more than once. solar heterotrophs autotrophs carbon dioxide water glucose photosynthesis Organisms that produce their own food are called process that some organisms use to make this food is called This process converts energy, into a carbohydrate called 2 and The products of this reaction are consumed by organisms called These organisms transform the energy found in gas to usable energy, releasing One gas, and that must take in pre-formed organic molecules for energy and gas and

coli, mak you believe will grow faster (37° C or 30° C temperature) and why. Results• Time Absorbance 30 °C Absorbance 37 °C Generation time Generation time t=0 min at 30 °C at 37 °C 0.05 0.05 t= 20 min 0.06 0.07 t= 40 min %3D 0.1 0.16 0.28 0.21 0.44 t = 60 min t= 80 min %3D 0.95 Complete the graph. Make sure this figure has a description and all other labels are included. Once you have completed graphing the points, draw a best-fit line for each of your data sets by eye Questions: 1. Which data point can be the first to be considered in log phase for each line? (It will be the first point that seems to be described by your best-fit line.) For the 30° C culture the -minute point is the first one likely to be in log phase. For the 37° C culture the -minute point is the first one likely to be in log phase. Incubation Temperatures - Growth Bio 40- Fall 2019 Page 6

Which of the following is the source of the carbon in sugar produced during photo-synthesis? CO2 H2O Rubisco PEP carboxylase

EXERCISE 9: Introduction to the Animal Kingdom Part 2: Modes of Digestion and Respiration, and Rotifera, Platyhelminthes, Annelida, and Mollusca Pre-lab questions (due at the start of the lab period) 1. You will examine four different phyla this week. Which of these four are coelomates? Which of these four are pseudocoelomates? Which of these four are acoelomates? 2. Epithelial tissue can be found as six different types. Examine the table below and place an X in the cells box corresponding to the description(s). The first type has been done for you as an example. Square Tissue Type Single layer Multiple layers Thin/Flattened Elongated cells Simple cuboidal Stratified cuboidal Simple columnar Stratified columnar • Dratiets Punch Simple Squamous Stratified squamous X Cells X tead ka time sinal ice ho various body plans exhibited by members of the animal kingdom

What does the Kirby-Bauer (disk diffusion) test assess? O The ability of a microorganism to produce an antibiotic. O The ability of a microorganism to be susceptible to antibiotics. O The ability of a microorganism to swim away from an antibiotic. O The ability of an organism to mutate in the presence of an antibiotic. O The ability of a microorganism to synthesize an antibiotic.

4. For each variable note if there is an increase, decrease or if the process stays the same or is normal.Herbicide Chlorophyll AbsorptionOxygen ProductionNADPH ProductionATP Synthase ActivityG3P ProductionH-1H-2H-3H-4H-5

Bacterium C had the lab results below. What can you tell me about the carbon food sources it ferments and the kind of end products it produces in anaerobic respiration?