問題一覧
1
What is a cytoplasm?
a jelly like substance that supports the organelle inside.
2
What is a cell membrane?
encloses the cells contents (contains nucleus)
3
What are chromosomes?
DNA of eukaryotes is clear self packed into chromosomes
4
What’s endoplasmic reticulum?
serves as a system of channels from the nucleus
5
What is the Golgi apparatus?
a group of Golgi body that collect and package and distribute molecule systems from one location to the next
6
Which of the following are characteristics of lysosmes? (More than one answer!)
breaks down foods particles , breaks down worn out cells parts, contains digestive enzymes from golgi apperatus
7
What are ribosomes?
they contain protein
8
What does the mitochondria do?
convert glocuse to usable energy
9
Which of the following characters or for chloroplasts? (More then one answer!)
there only found in plant cells, have special pigment molecules called chlorophyll that absorb sunlight and convert to glucose
10
What are all the characteristics of a plant cell? (More then one!)
central vacuole , storage facility for water and other materials, supports cell because it is filled with water
11
What is the cell wall?
made of cellulose (ling chains of glucose molecules)
12
What does the animal cell lack?
cell walls
13
What are 3 things that a open system cell does? (More then one answer!)
intake nutrients , exchange gases, reproduction
14
What type of bilayer does a cell membrane have in a open system?
phospholipid bilayer
15
What is a characteristic of a cell membrane in a open system?
proteins are suspended in the bilayer, sugar molecules are attached to some of the proteins.
16
What is a cell membrane In The fluid mosaic model?
membrane proteins are interspersed through the membrane, with their hydrophilic and hydrophobic ends.
17
What does a biological barrier do in the fluid mosaic model?
prevents many substances for entering the cells
18
What does selective filters do?
has a semi permeable filter which only lets some particles move in and out of the cell
19
What molecules can move through a semi permeable layer?
oxygen
20
How many layers does a phosolipid bilayer have?
2