Questions
What is hydrophobicity? What is hydrophilicity? How does the hydrophobicity/hydrophilicity of a substance influence the solvents...

What is hydrophobicity? What is hydrophilicity? How does the hydrophobicity/hydrophilicity of a substance influence the solvents that can dissolve them?

In: Biology

1. How can just paternal or maternal traits be expressed in offspring and how can some...

1. How can just paternal or maternal traits be expressed in offspring and how can some "acquired traits" be passed on to offspring?​

2. How can identical twins have identical genomes but different phenotypes (hair color, eye color, height)?​

3. Tell me everything about the composition of a nucleosome. I want exact names and numbers when possible.​

4. Define, compare and contrast heterochromatin and euchromatin and how they relate to gene expression

5. Discuss the relationship between 5 methyl-cytosine and 5 hydroxymethyl-cytosine, mention enzymes responsible for their placement and how each modification affects gene expression.

In: Biology

Why might you expect stepparents to invest less in their stepchildren when compared to biological investment...

Why might you expect stepparents to invest less in their stepchildren when compared to biological investment in biological children?

In: Biology

In a brief paragraph, please explain what are the different types of polymerization reactions and give...

In a brief paragraph, please explain what are the different types of polymerization reactions and give specific examples of polymers (products) of those reactions. Please do not copy and paste from a google search! Thank you :)

In: Biology

Huf and Ussing performed experiments where they measured a current flowing between two chambers when each...

Huf and Ussing performed experiments where they measured a current flowing between two chambers when each chamber had been filled with a saline solution and the chambers were separated by the skin of a frog. They noted that this current existed whether or not there was a concentration gradient for Na+ ions between the chambers and that Na+ ions and not Li+ moved between the chambers. Explain and describe the source of the current flow.

In: Biology

Based on what we learned in the lecture on spatial structure and on competition, how important...

Based on what we learned in the lecture on spatial structure and on competition, how important is it to vary spatial structure when characterizing competitive interactions? Use specific empirical examples to support your opinion. To what extent could you predict the competitive outcomes in the natural world if you only studied well-mixed environments? What is the paradox of the plankton? describe a solution to it.

Given what you know about microorganisms, their traits, and where and how they live, do you think non-transitive interactions occur frequently?

In: Biology

Describe the differences between and FOOD CHAIN and a FOOD WEB in an ecosystem. Define what...

Describe the differences between and FOOD CHAIN and a FOOD WEB in an ecosystem. Define what a trophic-level is and what that has to do with the energy transfer in the ecosystem and how this impacts CARRYING CAPACITY for any species

In: Biology

This is a confocal microscopy class. So please answer clear and detail according to the subject....

This is a confocal microscopy class. So please answer clear and detail according to the subject. Thank you

1.Explain how light diffraction causes the lateral point spread function of light as shown by Airy. Illustrate with a diagram of the PSF in the lateral direction.

2.What is the relative size of the point spread function in the vertical compared to lateral direction and how does this affect the shape of the voxels we record in a optimal resolution z-stack.

3.Is the point spread function wider or narrower with large aperture lenses? Explain why.

4.Does a larger aperture lens have higher resolution (more detail) or lower resolution (poor detail)? Or is aperture size unrelated to resolution?

5.Definedynamicrange.Explaintheimportanceofadjustingthedynamicrangeof the light intensity sensors (PMTs) and how the confocal encodes intensity into numbers.

6.Explain the advantage and disadvantage of frame-averaging.

6b.Explain how to optimize the resolution of your scanned image to avoid oversampling and minimize file size.

7.Make a list of the most functionally-important parts inside of the scan head box and briefly explain what each part does. Hint1: there are 5 kinds of things, and the AOTFs & lasers are not in the scan head box. Hint2: Without these 5 things, it would not be a laser scanning confocal microscope.

8.Explain why immersion oil is used for some lenses. Explain how it works.

9.Explain the relationship between the point-spread function and super-resolution.

10. What is chromatic aberration?

11. How does one detect cross-talk and bleed-through? How can you avoid it, and how can you correct for it if you could not avoid it?

12. Describe the three main ways to manage autofluorescence.

In: Biology

Which biome would be most impacted by agriculture? Which biome(s) would have fire adapted species?

Which biome would be most impacted by agriculture? Which biome(s) would have fire adapted species?

In: Biology

What is the term for an animal that keeps a constant internal temperature? What are five...

What is the term for an animal that keeps a constant internal temperature? What are five things (anatomical, behavioral, or physiological) that animals have (or do) that allow them to A) keep cool when it is hot and B) keep warm when it is cold? (think about the factors that influence heat gain and heat loss)

In: Biology

What are the major human impacts in terrestrial and aquatic habitats? List four (or more) for...

What are the major human impacts in terrestrial and aquatic habitats? List four (or more) for each.

In: Biology

Based on what you know about the organic and inorganic characteristics of the biomes, list five...

Based on what you know about the organic and inorganic characteristics of the biomes, list five “challenges” that organisms face who live in A) the tropical rainforest B) arctic tundra C) temperate forest D) desert

In: Biology

What is metabolic water? What are for ways (anatomical, physiological or behavioral) animals in dry environments...

What is metabolic water? What are for ways (anatomical, physiological or behavioral) animals in dry environments conserve water?

In: Biology

What are for ways (anatomical or physiological) plants in dry environments conserve water?

What are for ways (anatomical or physiological) plants in dry environments conserve water?

In: Biology

What is hypertropic cardiomyopathy? How does this relate to exrcise and younger athletes?

What is hypertropic cardiomyopathy? How does this relate to exrcise and younger athletes?

In: Biology