Biology
What is the waxy layer on the surface of a leaf called?
Cuticle
What subatomic particle in an atom is negatively charged?
An Electron
Define speed
Distance covered over a set amount of time
Which lab apparatus is used to measure a liquid's volume
Measuring Cylinder
free
no 2x though
What structure controls gas exchange in leaves?
Stomata
Which subatomic particle determines an element's identity
The proton
What is the SI unit of acceleration?
ms-2
Which lab apparatus is used to view small objects, cells, tissues, etc.
Microscope
Given that a rotating system experiences no external torque, which quantity must remain constant?
Angular Momentum
Why does increasing temperature eventually decrease the rate of photosynthesis?
Enzymes involved in photosynthesis can denature, while excessive water loss can also cause stomata to close.
What process occurs when an acid and a base react
Neutralization Reaction
Two objects are dropped from the same height. Object A is double in mass compared to Object B. Which one reaches the ground first? (Air resistance is negligible)
They both reach the ground at the same time.
Which apparatus is used to transfer small precise volumes of liquids
Pipette
What enzyme catalyzes the conversion of ATP to cyclic AMP
Adenylyl cyclase
During which stage of mitosis do chromosomes line up at the cell equator?
Metaphase
A reaction occurs such that heat is released to the surrounding environment. What type of reaction is it?
Exothermic
A metal spoon & a wooden spoon are both heated to the same temperature. They are both then left in the same room for the same amount of time. Which spoon cools down faster and why?
The metal spoon cools down faster since metal has a higher thermal conductivity compared to wood
What is the purpose of a fume hood
To protect against hazardous fumes and vapors
Define Entropy
Randomness
In the nephron, where does most selective reabsorption occur?
Proximal convoluted tubule
An iron nail is placed in Copper Sulfate solution. The iron slowly dissolves while copper forms on the nail. Which substance is being oxidized?
The iron nail
A heavy truck and a small car collide with one another. The truck is double in weight compared to the small car, but the small car is moving at quadruple the speed compared to the truck. Which vehicle experiences a greater force?
Due to Newton's Third Law, they both experience the same force.
Why is a conical flask commonly used during titration
The rounded shape of the flask allows the solution to be mixed by swirling with less risk of spilling
A fluid flows through a pipe that contains 3 sections. Section A is the narrowest, Section B is the widest, and Section C is somewhere in the middle. In which section is the fluid fastest, and why?
Section A, due to the conservation of mass