1. C There are two main types of cells Even though it's true that there are this 2 types of cells, this is not one of the following statements. Statements in cell theory: <span>-All living organisms are composed of one or more cells,
although there is controversy about virus since they have a non-cellular. -The cell is the basic unit of life and organization in organisms.<span> - Cells always arise from pre-existing cells( spontaneous generation doesn't exist)
2. C </span></span>Both Prokaryotes and Eukaryotes Both types of cells need to have genetic information, otherwise it's not possible to transfer the information to the "daughter-cells" when replication happens. Also, it would be possible to synthesize proteins, necessary for cell's survival<span>
3. B- </span><span>Eukaryotes only
</span>Plants have the so called plant cells, which are a type of <span>eukaryotic cell. </span>In plant cells we find a external wall composed by different kind of cellulose, chloroplasts; vacuoles, which don't exist in animal cells. Other organelles
such as the well define
nucleus,
mitochondria,
endoplasmic
reticulum, Golgi complex,
lysosomes, cytosol are what it makes a eukaryotic cell.
4.B -Eukaryotes only All living organisms except bacteria and Archaeas are eukaryotic, that includes protists. Protists are a diverse group of organisms but they are primarily microscopic and unicellular, or made up of a single
cell. Their cells are organized with a nucleus and organelles, making protist a group formed by eukaryotic cells.
5- BEukaryotes only All living organisms except bacteria and Archaeas are eukaryotic, that includes us humans. Trillions of cells are found in the human body and they are all eukaryotic because they have their genetic material (DNA) within the nucleus that is bound by a double membrane.
6- C <span>Both Prokaryotes and Eukaryotes </span>The cytoplasm is the material within a cell, that means: the gel-like substance and the organelles. All cells have a plasma membrane, cytoplasm, DNA, nucleus,
mitochondria,
endoplasmic
reticulum, Golgi complex and lysosomes
7. B Eukaryotic cells only
Eukaryotic cells contain groups of proteins that function as a unit
called organelles. An example of these organelles is the lysosome. It contains many
enzymes that digest proteins, nucleic acids and lipids. It's important that they are not all over the cytosol because they would digest all of the other organelles, leading to cell death. The fact that they are bound to the membrane keeps them away from killing the cell.
8. C- Both Prokaryotes and Eukaryotes Ribosomes are found in both prokaryotes and eukaryotes. They are not bound to the membrane; Ribosomes build protein based on the genetic information that the cell contains and that's a very important function for both types of cells.
9- <span>B- Eukaryotes only
There are two main types of eukaryotic cells, the animal and the plant cells. The name says it all, animals(including humans) have animal cells </span> because they have their genetic material (DNA) within the nucleus, <span>contain membrane-bound organelles,
that carry out specific functions (like lysosomes) necessary for normal cellular
operation.
10. B- </span>Eukaryotes only
The fungi group is formed by either unicelular( only one cell) or pluricellular (two or more cells) livings beings but they all are eukaryotes. <span>Fungal cells contain a membrane-bound nuclei and other cytoplasmic organelles such as mitochondria, and ribosomes bound to the membrane.
11. A- </span>Prokaryote only<span> Aside from bacteria and Archeaes, all the other groups are eukaryotes. </span><span>While the eukaryotes have a well defined nucleus with all the DNA
inside, the bacterias and archeaes have their genetic material all spread
throughout the cytoplasm of the cell.
</span>12.B Eukaryotes only This is one of the differences in Eukaryotic cells and prokaryotes. While the eukaryotes have a well defined nucleus with all the DNA inside, the prokaryotes have their genetic material all spread throughout the cytoplasm of the cell.
13. C - <span>Both Prokaryotes and Eukaryotes
</span> The cell membrane( also called cytoplasmic membrane), is a biological membrane that separates the interior of a cell from the outside environment. It's formed by a lipid bilayer with embedded proteins. This membrane chooses what comes inside the cell, and what comes out of it in prokaryotes and eukaryotes.
