What are cells? Check all that apply.

the building blocks of human life

the basic structural and functional unit of all living things

a group of organisms that works together to perform a common function

the building blocks of nonhuman life

Round each number to three significant figures 1044.987

The colour change of methyl orange with neutral substance

Democritus thought that matter was made of tiny particles of earth, air, fire, and water. that were all round and smooth. that could not be divided. that could be divided.

A diprotic acid, H 2 A, has acid dissociation constants of K a1 = 2.27 * 10 - 4 and K a2 = 4.00 * 10 - 11. Calculate the pH and molar concentrations of H 2 A, HA -, and A 2 - at equilibrium for each of the solutions. A 0.103 M solution of H 2 A.

Given a [pOH] = 1.2, what is the [OH-]? A. 0.06 B. 3.5 C. 7.5 D. 10.7

What best describes measuring with a graduated cylinder?

The top layer of a flat lying sedimentary rock is the ...

The Great Migration during World War I refers to the movement of (1) factory workers from the Northeast to the Sun Belt (2) communists deported to Russia as undesirable aliens (3) African Americans to northern cities to find work (4) refugees

Why are fibrous proteins important as structural molecules both within cells and extracellularly?

What type of weapon is consisted with low velocity spatter