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Must Know π @edsciencelab ππ¨βπ¬
Itβs from the Bacillus Calmette-GuΓ©rin (BCG) tuberculosis vaccine, commonly given to children in many countries (especially outside the US) via a skin injection.
The vaccine often leaves this distinctive round, slightly raised or dimpled scar with a textured, starburst-like pattern as it heals. Perfectly normal and harmless reminder of an old shot.
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The vaccine often leaves this distinctive round, slightly raised or dimpled scar with a textured, starburst-like pattern as it heals. Perfectly normal and harmless reminder of an old shot.
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Good morning β€οΈ
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If a neutral atom has 6 protons, how many electrons does it have?
Anonymous Quiz
15%
12
4%
3
6%
8
75%
6
Which of the following is true about a compound?
Anonymous Quiz
2%
It can be separated into its elements by simple physical filtration.
13%
It retains the exact physical properties of the elements that form it.
9%
It must always contain at least one metal atom.
76%
It is represented by a chemical formula showing a fixed ratio of atoms.
How are elements organized on the Periodic Table?
Anonymous Quiz
4%
By their alphabetical name
96%
By their increasing atomic number (number of protons)
0%
By when they were discovered
0%
By their physical state at room temperature
What is the electrical charge of an electron?
Anonymous Quiz
5%
Positive (+1)
7%
Neutral
82%
Negative (-1)
5%
Variable
β€1
Which of the following is an example of an element?
Anonymous Quiz
0%
Table salt
78%
Pure gold
17%
Carbon dioxide
5%
Water
Which subatomic particles are located inside the nucleus of an atom?
Anonymous Quiz
91%
Protons and neutrons
5%
Protons and electrons
0%
Electrons and neutrons
4%
Only electrons
Enjoy π your morning quiz π€².. Good morning β€οΈ
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Real π
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Real π @edsciencelab ππ¨βπ¬
The Golgi apparatus is a cell organelle that modifies, sorts, and packages proteins and lipids. It acts like the cellβs post office, preparing materials for transport inside or outside the cell.
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It takes 2 neurons to ride a bike
In this weekβs paper, Matthew Cook asks how a computer can control a bicycle without solving the full nonlinear equations of motion, or spending an inordinate amount of time learning through reinforcement learning. Humans seem to learn in a different way: not by deriving equations, and not by crashing thousands of times.
Cook presents a two-neuron network that can ride a simulated bicycle in a desired direction.
Good morning
@edsciencelab ππ¨βπ¬
In this weekβs paper, Matthew Cook asks how a computer can control a bicycle without solving the full nonlinear equations of motion, or spending an inordinate amount of time learning through reinforcement learning. Humans seem to learn in a different way: not by deriving equations, and not by crashing thousands of times.
Cook presents a two-neuron network that can ride a simulated bicycle in a desired direction.
Good morning
@edsciencelab ππ¨βπ¬
Which of the following travels the fastest?
Anonymous Quiz
5%
Seismic waves
81%
Light waves
2%
Water waves
12%
Sound waves
If a material absorbs 100% of all incident visible light, what color is it?
Anonymous Quiz
20%
White
66%
Black
0%
Clear
14%
Mirror-like