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4
votes
2answers
64 views

Transmembrane Protein Problem

Problem A transmembrane protein has 1000 aa. The 5th aa is found on the external side of the cell membrane. It interacts with the aqueous environment outside the cell. Amino acid 90 is inside the ...
1
vote
0answers
35 views

What are the white precipitates on teeth upon adding hydrogen peroxide to them?

So I thought my teeth were a bit yellow, and so I went online for a quick fix (that might not have been the wisest thing to do) and it said that using dilute hydrogen peroxide (the kind which you use ...
2
votes
1answer
32 views

What causes skewed ladder bands on an agarose gel?

I frequently ran into an issue where the bands of my ladder become skewed. What causes this? Here's an example: 0.7% agarose gel, 100V, 60 minutes. Same problem occurs with 1%. I loaded 10 ul of a 20 ...
6
votes
1answer
57 views

Alfred Jost's rabbit experiment: how did he actually do it?

I was watching a Crash Course on Biology YouTube video by Hank Green: Great Glands - Your Endocrine System. Hank humorously describes a sex determination experiment by Alfred Jost as follows ...
8
votes
1answer
115 views

How should I feed and keep an ant queen?

I have captured wandering ant queen. I guess she was just fertilised and was looking for a place to start a hive. I'd like to create my own ant hive in artificial environment. I unfortunately only ...
2
votes
0answers
41 views

What is this red liquid produced by a fungal colony?

In a jar, where I had some orchid plants, a fungi start growing few days ago. I removed the plants and let the fungi to expand and grow more. After some days, red drops started to appear on the ...
1
vote
1answer
42 views

Appropriate statistical test for a student lab?

I am a HS Bio teacher and doing a microevolution lab involving candy. Essentially students use four candy types and push them together until one cracks (Nat Sel). They also do simulations of ...