1. A cell within a multicelled heterotroph that requires lots of energy: a. is larger than those that need little energy. b. is packed with chloroplasts. c. is packed with golgi bodies. d. is packed with mitochondria.
Cell Structure
The knowledge and concept about the structure of the cells have changed constantly over the past years. Primarily the scientist defines the cells as a simple membranous sac with fluids and some particles. Researches have now revealed that the cell is the more complex and basic unit of life. There are different types of cells and they also differ in shape and structure. The basic three parts of a cell are cell membrane, cytoplasm, and organelle.
Plant Cell
The smallest functional unit of a living organism is known as the cell. It is composed of cytoplasm enclosed by an outer layer known as the cell membrane. A cell is classified as a prokaryotic cell and a eukaryotic cell. A prokaryotic cell does not contain a nucleus, and the genetic material is freely suspended in the cell cytoplasm; for example, bacteria are composed of a prokaryotic cell. Whereas a eukaryotic cell contains a nucleus and membrane-bound cell organelles with a specific function, plants and animal cells are examples of eukaryotic cells.
Plant Cell Types
Plants are made up of a variety of cell types that include both living and dead cells. These cells provide them mechanical and structural support along with the growth of plants. Plant tissue is a group or collection of cells, which are similar in structure and work together to accomplish a specific function. Plant cells are most similar to animal cells, both being eukaryotic cells.
1. A cell within a multicelled heterotroph that requires lots of energy:
a. is larger than those that need little energy.
b. is packed with chloroplasts.
c. is packed with golgi bodies.
d. is packed with mitochondria.
2. Glycolysis yields:
a. more ATP than a cell needs to survive
b. 36 ATP only when O2 is used during this process
c. 2 ATP in both aerobic and anaerobic organisms
d. less ATP than it uses up during the process
3. Photosynthesis provides the following to living systems:
a. lipids and oxygen.
b. atmospheric oxygen and chemical energy
c. organic "fixed" carbon.
d. hydrophyllic compounds.
e. b and c
4. Gamma rays:
a. are necessary for plants to photosynthesize
b. cause cells to begin to divide
c. are high energy short wavelength rays from the sun
d. are low energy long wavelengths rays from the sun
5. An example of a short-term energy storage molecule is:
a. glucose.
b. enzymes.
c. cellulose.
d. fats.
6. Cell membranes are:
a. composed of hydrophobic lipid tails and hydrophyllic phosphate heads.
b. composed of hydrophobic phosphate heads and hydrophyllic lipid tails.
c. different in eukaryotes compared to prokaryotes.
d. found in eukaryotes only.
7. Nucleoplasm is surrounded by:
a. the nucleolus.
b. a double phospholipid bilayer membrane.
c. a cell wall.
d. a protein coat.
8. ATP is composed of:
a. a sugar, a
b. a sugar, a
c. ribose, adenine and 3 phosphate groups.
d. b and c.
9. An example of a long term energy storage molecule is:
a. ATP.
b. glucose.
c. fats.
d. polysaccharides like starch
e. a and b
f. c and d
10. Passive transport:
a. occurs from regions of low to high concentration.
b. always requires a carrier protein.
c. moves molecules into or out of cells.
d. moves large quantities of molecules into or out of cells.
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