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Biology : Recent Questions and Answers (Page 4)

Find answers to your questions about Biology or help others by answering their Biology questions.

Do cats produce DMT?

Edit: If somebody (anybody) wants to add an answer so the bounty won't go to waste, please do so! The comments have already introduced me to the Kegg metabolism database,...

Asked on 11/30/2021

1 answer

Why is the 5′ end of DNA a monophosphate?

According to my textbook:While the 5′ end of a DNA strand is typically a monophosphate, the 5′end of an RNA molecule is typically a triphosphate.Source: Biology: How Life Works,...

Asked on 11/30/2021

0 answer

How can viruses spread so fast in a plaque assay?

I understand the basic idea of viral plaque assay, but I don't understand how the virus spreads so quickly in the culture. For example, at 1:30 in...

Asked on 11/30/2021

1 answer

How T-Cell recognizes a cell infected by a virus?

According to few articles I read (like BBC about The people with hidden immunity against Covid-19 ):starting out about four or five days after infection, you begin...

Asked on 11/30/2021

1 answer

How do big cats perceive objects, specifically vehicles?

Right so we have been on safari in South Africa recently and before encountering big cats (lions) we have been told to hold still and not reach out beyond the...

Asked on 11/28/2021

2 answer

What is the mechanism responsible for long-lasting detectable antibody titers?

As I understand, when naive B cell encounters antigen matching its receptors and is activated by a T helper cell, it can either differentiate into 4 plasma cells, produce a...

Asked on 11/28/2021

0 answer

Why is it difficult for germs to jump species?

If you haven't watched CGP Grey's video Americapox: The Missing Plague, I suggest you watch it. It's an excellent video. One assertion he makes...

Asked on 11/28/2021

1 answer

When life first formed in earth's ocean, was it salty yet?

Do we have any tangible proof, e.g. by studying fossils of primitive life forms, that during their time the ocean was already salty, and at roughly similar levels to today's,...

Asked on 11/25/2021

1 answer

Help Finding Specific BlaZ Gene Type Sequences on Genbank

I am doing an undergraduate research project that involves blaZ gene typing for different strain types of Staphylococcus aureus bacteria; for reference, here are some of papers on this topic...

Asked on 11/23/2021

1 answer

Asexual Reproduction Of sponges through endogenous or exogenous budding?

I was studying asexual reproduction in sponges and came across two websiteWikipedia of Gemmule and there is a line....Only Endogenous Types of Buds develop into New Sponges.Then...

Asked on 11/23/2021

1 answer

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