Biology
A laboratory instrument used for accurately measuring and transferring very small volumes of liquids.
What is a micropipette?
This colorful fabric design technique became a symbol of the 1960s counterculture, involving folding, twisting, and binding cloth before applying vibrant dyes.
What is tie-dye?
This is the value of x in the equation: x+7=12
What is 5?
This type of powder is gently applied with a magnetic wand to reveal latent fingerprints on non-porous surfaces like glass or metal.
What is black magnetic powder?
This law explains why an ice hockey puck stays still until someone hits it, and why it keeps moving until friction or another force stops it.
What is Newton’s First Law of Motion?
Commonly filled with H2O, this constant-temperature laboratory device is used to incubate samples without the risk of an open flame.
What is a water bath?
This molecule carries genetic instructions used in the growth, development, functioning, and reproduction of all known living organisms and many viruses.
What is DNA?
Convert the fraction 3/4 into a decimal.
What is 0.75?
This color powder is used with a fiberglass brush to lift prints from dark or multicolored surfaces where black powder would be hard to see.
What is non-magnetic white powder?
According to this law, if you push a shopping cart harder, it accelerates more. It’s expressed by the formula a=F/m.
What is Newton’s Second Law of Motion?
This heated, insulated lab device maintains a controlled environment to grow bacterial cultures on Petri dishes.
What is an incubator?
What number on the pH scale represents a neutral substance, meaning it is neither an acid nor a base?
What is 7?
2x−3=11
What is 7?
When using magnetic powder, this key advantage helps reduce the risk of smudging latent prints compared to traditional brush methods.
What is the lack of direct contact with the surface (since the magnetic wand suspends the powder without bristles)?
This law explains why if the horse pulls the cart forward with a force F, the cart pulls the horse backward with an equal and opposite force F.
What is Newton’s Third Law of Motion?
A shallow, transparent dish with a lid that provides a sterile environment for bacterial cells to grow.
What is a petri dish?
Lemon juice and vinegar are common household liquids. If you test them with a pH strip, they will turn the pH strip red or orange because they are _______.
What is acidic?
Simplify: (square root of 81)+23
What is 17?
Accounting for roughly 60% to 65% of all human patterns, this most common fingerprint type curves back on itself and exits from the same side it enters.
What is a loop?
For an object in motion, the direction of this vector quantity is always in the same direction as the net force acting upon it, according to Newton's second law.
What is acceleration?
A small, circular piece of DNA that exists separately from a bacterial cell's main chromosomal DNA.
What is a plasmid?
If you dip a pH strip into a household liquid like soap and it turns a dark blue or purple color, what does this tell you about the liquid?
What is a base?
The sum of the interior angles of a triangle always equals this number of degrees.
What is 180?
This ridge characteristic occurs when a single fingerprint ridge splits or forks into two separate branches.
What is a bifurcation?
When a balloon is released and air rushes out one end, the balloon flies in the opposite direction. This is an example of this law in action.
What is Newton’s Third Law of Motion?