Rhino horns are prized by hunters.
Rhino horns have several uses, some practical, and others with no factual basis. Among its practical uses is for making handles for daggers, such as in Oman and Yemen. In China and Vietnam , rhino horn is a part of traditional medicine, believed to cure even cancer.
Even in Europe , there is a belief that rhino horn is an antidote to poison and an aphrodisiac. The medical community denounces these claims and compares them to drinking powdered fingernails in water. One of the less-known rhino facts is that heir horns are made of pure keratin, much like a humanβs nails. Rhino horns are also used for decorative purposes.
π§¬@Biochemistryscienceπ§¬
Rhino horns have several uses, some practical, and others with no factual basis. Among its practical uses is for making handles for daggers, such as in Oman and Yemen. In China and Vietnam , rhino horn is a part of traditional medicine, believed to cure even cancer.
Even in Europe , there is a belief that rhino horn is an antidote to poison and an aphrodisiac. The medical community denounces these claims and compares them to drinking powdered fingernails in water. One of the less-known rhino facts is that heir horns are made of pure keratin, much like a humanβs nails. Rhino horns are also used for decorative purposes.
π§¬@Biochemistryscienceπ§¬
β€1
Hey guys how many of you know about dichotomous key ?π§π§π§
1. Which of the following is NOT true of a dichotomous key?
Anonymous Quiz
20%
A. They can be used to identify an organism by its scientific name.
35%
B. They can sometimes experience errors, because close species may share the same characteristics.
31%
C. They can be used by anyone, even without specialized scientific knowledge.
15%
D. None of the above.
π2
2. Which of the following is NOT a style of dichotomous key?
Anonymous Quiz
13%
A. Nested
24%
B. Linked
33%
C. Polychotomous Key
30%
D. Computer Program
π2
3. Which of the following is NOT a reason to use the scientific name (Sci. Names) of an organism, instead of the common name?
Anonymous Quiz
22%
A. The Sci. Name contains useful info, like the genus name, which tells us the species of organisms.
30%
B. The Sci. Name is unique to each species, while the same common name may be used to diff. species.
30%
C. The Sci. Name is easier to remember and is commonly used in conversation.
19%
D. None of the above.
What is a Dichotomous Key | Step-by-Step Guide with Editable Templates
https://creately.com/blog/diagrams/what-is-a-dichotomous-key/
https://creately.com/blog/diagrams/what-is-a-dichotomous-key/
Creately
What is a Dichotomous Key? How to Create one with Examples | Creately
A dichotomous key is a tool, Students and professionals use to identify and classify objects into specific categories based on their characteristics. Learn more about the dichotomous key with this guide.
Let us try a simple dichotomous key question.
An illustration of four leaves and a dichotomous key are provided. Use the dichotomous key to identify which of the leaves is from the magnolia tree.
Anonymous Quiz
19%
A. Leaf 1
41%
B. Leaf 2
24%
C. Leaf 3
16%
D. Leaf 4
Talking about classification: to which kingdom does virus belongs to ? Explain your answer
π1
Some facts of the day
β‘οΈThe air you breathe in a train station is 15% human skin.
β‘οΈWhen you die, your house cat is going to want to eat you.
And if your cat doesn't, your gut flora might start taking over your body and colonizing your internal organs.
β‘οΈOver 80 million bacteria can be exchanged in one kiss.
β‘οΈAbout 1 in 50 people in the United States currently have a brain aneurysm that just hasn't ruptured
That's about 6.5 million people.
β‘οΈThere's a brain-eating amoeba that lives in lakes and rivers of the southern United States.
The single-celled organism travels up the nose to the brain, where it starts to break down the tissues.
π¦ π§¬@Biochemistryscienceπ§¬π¦
β‘οΈThe air you breathe in a train station is 15% human skin.
β‘οΈWhen you die, your house cat is going to want to eat you.
And if your cat doesn't, your gut flora might start taking over your body and colonizing your internal organs.
β‘οΈOver 80 million bacteria can be exchanged in one kiss.
β‘οΈAbout 1 in 50 people in the United States currently have a brain aneurysm that just hasn't ruptured
That's about 6.5 million people.
β‘οΈThere's a brain-eating amoeba that lives in lakes and rivers of the southern United States.
The single-celled organism travels up the nose to the brain, where it starts to break down the tissues.
π¦ π§¬@Biochemistryscienceπ§¬π¦
β€2
Facts of the day
π§¬Termites outweigh humans by almost ten to one.
π§¬A spider's web is not a home, but rather a trap for its food. They are as individual as snowflakes, with no two ever being the same. Some tropical
spiders have built webs over eighteen feet across. More people are afraid of spiders than death. Amazingly, few people are afraid of Champagne corks even though you are more likely to be killed by one than by a spider.
π§¬Your brain consumes 25 watts of power while you are awake. This amount of energy is enough to illuminate a lightbulb.
π§¬It is impossible to lick your elbow.
π§¬Intelligent people have more zinc and copper in their hair.
π§¬Possums have one of the shortest pregnancies at 16 days. The shortest human
pregnancy to produce a healthy baby was 22 weeks, 6 days -- the baby was the length of a ballpoint pen.
π§¬Wearing headphones for just an hour will increase the bacteria in your ear by 700 times.
π§¬The most poisonous spider is the black widow. Its venom is more potent than a rattlesnake's.
π§ͺπ¦ @Biochemistryscienceπ¦ π§ͺ
π§¬Termites outweigh humans by almost ten to one.
π§¬A spider's web is not a home, but rather a trap for its food. They are as individual as snowflakes, with no two ever being the same. Some tropical
spiders have built webs over eighteen feet across. More people are afraid of spiders than death. Amazingly, few people are afraid of Champagne corks even though you are more likely to be killed by one than by a spider.
π§¬Your brain consumes 25 watts of power while you are awake. This amount of energy is enough to illuminate a lightbulb.
π§¬It is impossible to lick your elbow.
π§¬Intelligent people have more zinc and copper in their hair.
π§¬Possums have one of the shortest pregnancies at 16 days. The shortest human
pregnancy to produce a healthy baby was 22 weeks, 6 days -- the baby was the length of a ballpoint pen.
π§¬Wearing headphones for just an hour will increase the bacteria in your ear by 700 times.
π§¬The most poisonous spider is the black widow. Its venom is more potent than a rattlesnake's.
π§ͺπ¦ @Biochemistryscienceπ¦ π§ͺ
β€4π1
Forwarded from Welid Mohammed
Media is too big
VIEW IN TELEGRAM
What is the most expensive element ? And why is that so ? Explain πππ
Sleep is regulated by a complex interaction of physiological and psychological factors. Some of the key factors that contribute to the onset of sleep in humans include:
1. Circadian Rhythms: The body's internal clock, which regulates the sleep-wake cycle based on a 24-hour day. Melatonin, a hormone produced by the brain's pineal gland, plays a key role in regulating these rhythms.
2. Adenosine: Adenosine is a chemical in the brain that builds up during wakefulness and promotes sleep. When adenosine levels are high, it signals to the body that it's time to rest.
3. Neurotransmitters: Various neurotransmitters, such as serotonin and gamma-aminobutyric acid (GABA), play a role in promoting sleep and relaxation.
4. Environmental Cues: External factors such as light, temperature, and noise can influence the body's readiness for sleep.
π§ͺπ¦ @Biochemistryscienceπ¦ π§ͺ
1. Circadian Rhythms: The body's internal clock, which regulates the sleep-wake cycle based on a 24-hour day. Melatonin, a hormone produced by the brain's pineal gland, plays a key role in regulating these rhythms.
2. Adenosine: Adenosine is a chemical in the brain that builds up during wakefulness and promotes sleep. When adenosine levels are high, it signals to the body that it's time to rest.
3. Neurotransmitters: Various neurotransmitters, such as serotonin and gamma-aminobutyric acid (GABA), play a role in promoting sleep and relaxation.
4. Environmental Cues: External factors such as light, temperature, and noise can influence the body's readiness for sleep.
π§ͺπ¦ @Biochemistryscienceπ¦ π§ͺ
π2β€1
What is the strongest acid in the world?
Anonymous Quiz
39%
Hydrochloric acid
36%
Sulfuric acid
16%
Flouroantimonic acid
9%
Perchloric acid
π6π2
What is the strongest base in the world?
Anonymous Quiz
26%
Orthodiethynyl benzene dianion
27%
Potassium hydroxide
37%
Sodium hydroxide
10%
lithium monoxide anion
π12β€5
Which choice have both the weakest acid and the weakest base respectively?
Anonymous Quiz
22%
Formic acid and NaOH
27%
Hydrofluoric acid and Ca(OH)2
35%
Acetic acid and Zn(OH)2
15%
Oxalic acid and Zn(OH)2
π10β€5π₯2