07/22/19

How do chemists calculate the existence of billions of organisms?
So the packaging of Bio-Cultures Complex says that it contains a minimum of a billion viable organisms per capsule. How has such an estimate been drawn? Have they counted a smaller amount and... more
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07/22/19

Can a plastic degrading bacteria science fair project be recreated in a school lab?
i am just looking for a science fair project and am fascinated by this topic. i was wondering if a project concerning the isolation of plastic degrading bacteria could be done in a school lab. I am... more
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07/21/19

My uncle was not sure ___________ the strange guest were A) which B) who C) whom D) what
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07/21/19

What is the limiting reactant in synthesis of ammonium (NH3) if you have 15 moles of N2(g) and 10 moles of H2(g)?

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07/20/19

Molar enthalpy in calorimetry experiment
25.0 mL of 1.00 M KOH solution is mixed with 25.0 mL of 1.05 M HCl in an open calorimeter. You can assume volumes of these solutions are additive. The density of the resulting solution is 1.03 g/mL... more
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07/20/19

Can tardigrades survive being eaten?
Compared to a tardigrade, the cockroach seems fragile. But can tardigrades survive the acidic environment of being eaten by most animals?
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07/19/19

Does an allergic reaction kill body cells?
I have wondered what actually happens in an allergic reaction that causes the symptoms such as pain, rash etc.Is it possible that the human body actually kills its own cells in the process?
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07/19/19

What is the smallest number of science students who could be studying biology?
If 20% of the science students at central high study only physics, 25% study only chemistry and the rest study only biology, what is the smallest number of science students who could be studying... more
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07/19/19

Why is rabies incurable?
I'm still not sure about the mechanics that lead to rabies being incurable. I know that it can be treated before any symptoms show up, but why is it that once symptoms show the person is a dead man... more
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07/19/19

I'm having trouble figuring out what to do with this...

Given the first term a1, and the common difference d of an arithmetic sequence, find the next five terms. a1= 6a+2, d= 3-2a
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07/19/19

Is there an estimation how much organic matter there is still in the ground?
Oil, gas and coal are produced from organic matter. But is there an estimation how much is there still under the Earth's surface?
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07/19/19

How can fresh cavities form at the margins of sliver amalgam fillings on teeth?
Silver amalgam fillings predominantly contain silver a known bactericidal agent and mercury which a known toxin and has bactericidal property. So how is it that the plaque bacteria survive near the... more
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07/18/19

Can immunity to diseases vary by populations?
A common explanation for the massive population decreases of isolated societies upon contact with Europeans during the Age of Discovery is that the natives lacked immunity to newly introduced... more
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07/17/19

Why is the melting point of p-dichlorobenzene higher than those of o-dichlorobenzene and m-dichlorobenzene?
I was going through alkyl and aryl halides and noted the following statement in my textbook: > _p_-dichlorobenzene has higher melting point and solubility than those of _o_-dichlorobenzene and... more
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07/17/19

How long does it take for a hard clam (Mercenaria mercenaria) to reach sexual maturity?
How long does it take for a wild hard clam (*Mercenaria mercenaria*) to reach an age where they are reproductive? How does fecundity depend on age and size? I've looked at several hard clam life... more
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07/16/19

How can someone not working in the pharmacologic industry help find a solution for a medical problem without donating money and without waiting?
The question is about the minimum knowledge and equipment required to create 1. drugs for treating infectious diseases or 1. drugs for pain reduction or 1. drugs for cancer treatment and where... more
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07/16/19

How acurate is an ultrasound?
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07/16/19

What structures are directly or indirectly derived from the mesonephric or Wolffian duct?
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07/15/19

Calculation of the bacterial growth rate from a spectrophotomer growth curve?
Typically the microbial growth in liquid cultures is monitored by turbidity. Data is obtained with a spectrophotometer to measure optical density at 600nm. The slope of the bacterial kinetic curve... more
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07/15/19

Can a vaccine or antidote be administrated via gases or sprays?
On TV or in movies a gas or spray containing a vaccine/cure/antitoxin is released and everybody is saved. Is this something plausible in real life? Specific examples would be appreciated.
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07/15/19

Can some prokaryotic cells be larger than eukaryotic cells?
Can the sizes overlap in some bacterial species? My science teacher claims so. My research says the opposite. Can someone confirm?
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07/14/19

How much will this 0 affect my grade?
I overslept for an exam and missed it!!!! There are 4 exams total, and they’re worth 50% of our grade... Here’s the breakdown of the course ...Health Improvement Project: 25%Class Discussion:... more
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07/13/19

Does running help to get rid of a product put in the body by intramuscular injection?
I receive an intramuscular injection of Haldol (Haloperidol) every week. Does doing exercise (such as running) helps in getting rid of the injected Haldol?
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07/13/19

Are there verbs for "undergo mitosis" and "undergo meiosis"?
From my experience on SE sites, I believe this is the right site to ask this question under "terminology".I've been trying to find out whether English has one-word verbs for "undergo mitosis" and... more
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07/12/19

What is 34 degrees Celsius in Fahrenheit?
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