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visits member for 2 years, 11 months
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5h
awarded  Pundit
1d
reviewed Close Bird identification
1d
reviewed Close Is one metabolomic database more searchable than any other?
2d
revised What is possibly wrong in my gel electrophoresis when I didn't see bands of DNA ladder on gel?
added 612 characters in body
2d
awarded  Enlightened
2d
awarded  Nice Answer
Nov
20
reviewed Approve suggested edit on Why are there no tree-like plants that grow in lakes?
Nov
19
comment What are some difficulties animals had to overcome to reproduce on land?
Are you thinking of vertebrates specifically? Or animals more generally (including insects, mollusks, etc.)?
Nov
19
comment What triggers the formation of biofilm?
Your third sentence, wherein you say you understand how biofilms form contradicts your 1st and 5th sentences wherein you ask how it forms. Can you edit your question to be less vague, provide sufficient background, and generally clarify what you don't understand.
Nov
18
reviewed Leave Closed Types of protectants for NSAIDs?
Nov
18
reviewed Leave Closed How do neural pathways in the thalamus filter incoming information?
Nov
16
comment How to determine externally that a whale is a mammal?
@JeremyKemball Only milk and hairs make them mammals. Warm-blooded and live birth are present outside of mammals.
Nov
16
comment What proportion of salt in water would make it not dehydrate nor hydrate someone?
You are looking for physiological saline which is isotonic to most tissues. It is about 0.9% w/v, which equates to ~9g NaCl per liter water.
Nov
16
comment Why do mammalian red blood cells lack a nucleus?
The relationship between carrying more oxygen per cell and surface area does not follow logically to me. Enucleation will lead to increased surface area per unit volume, which will relatively increase the area for transport across the membrane. But aside from increasing Hb content or concentration, that won't lead to more oxygen carrying capacity.
Nov
11
revised human immune system
Add information from comment posted as answer.
Nov
8
reviewed No Action Needed Can cracking fingers cause Arthritis?
Nov
8
reviewed Approve suggested edit on Question about what the liver does NOT do
Nov
8
comment A subtle test for color-blindness
This question appears to be off-topic because it has been posted to CogSci.
Nov
6
comment Insects or Birds covering least distance but most wing moves
When hummingbirds are hovering, they go 0 distance at ~80 Hz flapping frequency and ~1200 bpm heartrate. hummingbirds.net/about.html#wingbeat
Oct
31
comment How many pandas should exist?
Relevant question: biology.stackexchange.com/questions/305/…