• anonymous
11. The highest level in the organizational hierarchy of the human body is the (1 point) atom. organ system. organism. tissue. 12. The brain of the cell is called the (1 point) endoplasmic reticulum. nucleus. lysosome. cytoplasm. 13. Within the cell, the clean-up crew is the (1 point) endoplasmic reticulum. nucleus. lysosomes. cytoplasm. 14. Within the cell, a tubular network that is involved in protein synthesis and transport is the (1 point) endoplasmic reticulum. nucleus. lysosomes. cytoplasm.
  • Stacey Warren - Expert
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  • katieb
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  • kirbykirby
11) organism. 12) nucleus 13) lysosomes 14) endoplasmic reticulum This is the wrong forum by the way, but I'll help since I know bio :)
  • kirbykirby
I can provide some explanation if you need (perhaps the questions are a bit "vague" (what is the "brain" of the cell). Maybe this is causing confusion
  • kirbykirby
11) atoms are the smallest components of any matter (although you may argue that it's quarks instead, but don't need to worry about that!). Lots of atoms form molecules, and many molecules will make up a tissue of a living being (roughly saying). Then, we get organs systems which are large structures in the body, and the organism is the whole human. 12) The nucleus essentially helps direct the activity in the cell. It contains DNA which in turn are made of genes that are used to synthesize proteins and enzymes. The genes themselves can be regulated to be activated or inactivated and this will change what the cell is producing in terms of proteins. This is why you'd call it the "brain" of the cell because it is responsible for many important functions. 13) Lysosomes are the clean-up crew because they essentially degrade other proteins/molecules and other waste in the cell with hydrolytic enzymes.They will digest non-function enzymes and possibly some viruses. So, essentially they are "cleaning up" the cell of what's not good for the cell :) 14) This is pretty much to be known by definition of the endoplasmic reticulum. The question accurately describes it's function (either you know this or you don't).

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