1. (blank) are the basic units of structure and function in living things.
2. a (blank) is a group of similar cells that perform a specific function in an organism.
3. (blank) are nerve cells that carry response information to muscles and organs.
4. carbon dioxide and (blank) are outputs of cellular respiration.
5. (blank) is essential to living things because many of the chemical reactions that occur in living things require it.
6. scientists did not discover the cell until the (blank) was invented because cells are too small to see without one.
cells, tissue, organ, osmosis, tropism, nucleic acids, organisms, motor neurons, enzymes, microscope, phyla, respiration, water, diffusion, energy, sensory neurons.

Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.

The last few miles of the marathon are the most difficult for heather, her hair plastered to her head, sweat clinging to her arms, and her legs already feeling as if they had nothing left, just dead weight. after grabbing a cup of ice water, she feels the ice cubes smash against her nose as she gulps some cool refreshment and keeps on running. in these last few miles, the breeze kicks up and she finally feels some coolness against her skin. drips of sweat, once clinging to her forehead, now spill down, and heather feels more pain as the sweat flows into her eyes.which of the following is the most likely reason why the ice struck heather’s nose when she took a drink? a) water can function as a solvent. b) water can store large amounts of heat. c) water can moderate temperatures through evaporative cooling. d) the density of water decreases when it freezes. e) water has a cohesive nature.sweat remained on heather’s forehead and arms because of the a) high salt content of sweat b) cohesive nature of water c) ability of water to moderate heat d) high evaporative cooling effect of water e) ability of water to act as a solvent

Will mark brainliest how many electrons can be held in the energy level n = 4?