You decided to become a super cool food scientist and upon graduation, was hired at an ice cream company. The first product you are asked to work on is soft-serve ice cream. Soft-serve ice cream starts off as a liquid ice cream mix that will later be frozen into delicious, smooth and creamy ice cream. Your lab mate was showing you how to make the liquid ice cream mix, and after making it, forgot to put it in the refrigerator before heading home. Unfortunately, that ice cream mix contained 2 viable food infection type microorganisms. If the average lag phase generation time is 105 minutes, the average log phase generation time is 35 minutes, and three generation times (16 microorganisms) are required for the system to switch from the lag to the log phase, how many microorganisms would be present in the mix when you returned to the lab 14 hours later. Please provide your answer to the nearest whole number

In a hypothetical species of butterfly, wing spots are controlled by a single locus where BB individuals have blue spots, YY individuals have yellow spots, and BY individuals have green spots. Ten years ago, a previous collector randomly collected 1000 butterflies and reported finding 90 blues, 420 greens, and 490 yellows. You collect 40 blues, 320 greens, and 640 yellows. Has there been evolution in this population? If yes, is natural selection involved? Explain and justify your answers.

This is my third time posting this question, please don't answer it if youre going to give me p2+q2+2pq=1

I'm not asking if evolution is happening 10 years ago and if it is happening now, I'm asking has evolution happened comparing 10 years ago to now!

So can you please calculate the expected genotypic or phenotypic frequencies (of each of 10 years ago and now) using HWE math p2+2pq+q2p2+2pq+q2. Then calculate the chi-square values, which are adjusted measures of deviation based on each individual frequency. Fail the test, and you know you have a violation of HWE. It is possible to test for signatures of selection (please test for selection as well) .

I hope you dont just give me a 2 line answer or give me a pasted answer of the old questions! Im definitely going to give a thumbs down as this is the third time I ask this.

In the Meselson - Stahl experiment, if after the first round of replication, the DNA had been denatured at high temperature before its centrifugation in a column of cesium chloride, which two models would have shown the same sedimentation pattern?

Group of answer choices

a) semiconservative and dispersive

b) none of the three would have had the same sedimentation pattern

c) all three would have shown the same sedimentation pattern

d) conservative and dispersive

e) semiconservative and conservative

Ecology:

Be able to draw and describe in words the three hypothesized models of how species richness affects ecosystem function. Also be able to draw and label the H0, null hypothesis model. Be able to give examples of ecosystem function.

Why has an energy deficiency been considered a central cause of infertility for both male and female and what examples support this notion?

Ecology:

What are the key processes of the water cycle? What are the consequences of human disruption of the water cycle?

Define the following: protozoan, trophozoite, cyst.

Mutations can be classified based on either the effect of the mutation on the function of the gene product or the location of the mutation within the chromosomes. Explain the difference.

Use the Internet to find an environmentally related problem that is happening in your area. Present information about the history behind this problem including the population growth model in the area, what factors led to its occurring and who might be responsible for it. Share what is being done to solve the problem and how effective those efforts are. Present ideas from the textbook about how the problem might be mitigated. Extrapolate your local issue to the global environment. What classes of environmental problems seem to be widespread and recurring across our country and the world. How is population growth related to the problem ?

Describe the role that Phosphoinositides (PIs) (e.g. PIP₂, PIP₃, etc) play in both membrane trafficking and cell signaling. Give a specific example of how they play a role for each.

Ras is a GTP-binding protein that is often mutated in cancer cells. Normal cells are stimulated to divide by receiving a signal from a growth factor through a receptor tyrosine kinase. When the receptor tyrosine kinase binds the growth factor, Ras is stimulated to bind GTP. Ras in turn activates proteins that promote cell proliferation. A common mutation in cancerous cells causes Ras to behave as though it were bound to GTP all the time. Suppose that there is a drug that can turn off the activity of the receptor tyrosine kinase by preventing its ability to dimerize. Do you think that this drug will inhibit the division of cells that have a mutated Ras protein that acts as though it were always bound to GTP? (2 points) Explain your answer (2 points)

1) You have 100 ml of a solution of ATP. You take 25 ?l, and dilute it to a final volume of 1ml. The absorbance of the diluted solution at 259 nm is 0.550.

a) What is the ATP concentration in the original, undiluted solution?

**The molar extinction coefficient for ATP at 259 nm is 15,600 l mol-1cm-1.

b. How many mg of ATP are there in total in the original, undiluted solution?

**The formula weight of ATP is 551.14 g/mole.

2) Fill in the blanks, with one of these 5 amino acids

Lysine/Cysteine/ Valine/ Tryptophan/Aspartate

a) If you dissolve (blank) in water, the resulting pH would be about 8.5

b) if you dissolve (blank) in water, the resulting pH would be about 4

c) (blank) residues would most likely be buried in the core of a folded protein structure

d) Collagen does not absorb strongly at 280 nm. This is because its sequence does not contain many (blank) residues.

e) (blank) can form disulfide bridges in proteins

3) You mix 100 ml of 0.1 M acetic acid with 100 ml of 0.1 M sodium acetate. The pKa of acetic acid is 4.76.

a) What is the pH of this mixture?

b) You then add 10 ml of 25 mM HCl. What will the new pH be?

c) What would the resulting pH be if you just added 10 ml of 25mM HCl to 200 ml of distilled water?