BIOL 120 Lecture Notes - Lecture 2: Cytosol, Plant Cell, Eukaryote
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i need help with this homwork please choose the correct answers and just be claer to read and understand for the slect the apply qusestions too and it is important i realy need the right answers so please be claer not write randomly i really need the correct answers to study for my test so hop you can help me
Question 1
What is the smallest cell you could find?
Mycoplasma |
Archaea |
Bacteria |
Cyanobacteria |
Question 2
TEMs appear as 3D images
True |
False |
Question 3
Bacteria are what cell type? Write one word as the answer in lowercase and using no syntax.
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Question 42 pts
ALL eukaryotic cells have which of the following. Click all that apply.
nucleoid |
cell membrane |
chloroplasts |
nucleus |
membrane enclosed cell organelles |
mitochondria |
Question 5
Prokaryotes and eukaryotes both have which if the following cellular components. Click all that apply.
ribosomes |
plasma membrane |
DNA |
nucleoid |
Question 6
I am made of one 60s and one 40s subunit, which organelle am I?
protein |
lipid |
bacterial ribosome Question 9 The difference between the rough and smooth ER is
Question 10 The site where many lipids, including cell membrane is produced.
Question 11 Name the organelle: In muscle cells in particular, I would increase in number and size in response to frequent exercise
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Question 12 In animal cells, glucose would be mobilized from its storage molecule (glycogen) in this part of the cell.
Question 13 Which of these is associated with the rough ER
Question 14 Which organelle sorts, modifies and stores substances produced on the rough ER. Write two words as the answer in lower case separated by a space. Question 15 Which organelle is responsible for ATP production. Write one word in the singular as the answer. Question 16 You inherit all of your mitochondria from your
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Question 27
What accounts for 40% of the protein in our bodies?
Fibers |
Cells |
Collagen |
Keratin |
Question 28
Animal cells have cell walls
True |
false |
The vesicles that transport materials from donor membranes to acceptor membranes include:
1. | COP-II coated vesicles | |
2. | COP-III coated vesicles | |
3. | COP-I coated vesicles | |
4. | Clathrin coated vesicles |
2.5 points
QUESTION 11
During skeletal muscle contraction, the roles of ATP include:
1. | ATP is not required for forming the crossbridges between myosin and actin filaments. | |
2. | ATP is utilized as a structural linker to mediate the interaction between myosin and actin filaments | |
3. | Hydrolysis of ATP provides energy for myosin head to move along actin filaments and the binding of ATP to myosin head allows the detachment of myosin fromactin filaments. | |
4. | ATP binds to actin filaments to drive the power stroke of myosin head. |
2.5 points
QUESTION 12
One of the functions of smooth endoplasmic reticulum is
1. | Synthesizing steroid hormone in the endocrine cells of the gonad and adrenal cortex | |
2. | Serves as the starting point of the biosynthetic pathway | |
3. | Synthesizing secretory proteins | |
4. | Degrading cell debris |
2.5 points
QUESTION 13
The function of COP-II coated vesicles is mainly:
1. | Transporting materials from endosomes to Golgi complex | |
2. | Moving materials from the ER to the ERGIC and Golgi complex. | |
3. | Transporting materials from Golgi complex back to endoplasmic reticulum. | |
4. | Involved in receptor-mediated endocytosis. |
2.5 points
QUESTION 14
Which of the following processes is completed in rough endoplasmic reticulum?
1. | Chaperones help misfolded proteins fold correctly. | |
2. | Proteins that target to nucleus are synthesized in rough endoplasmic reticulum. | |
3. | O-linked glycosylation occurs in rough endoplasmic reticulum. | |
4. | Misfolded proteins are destructed in rough endoplamic reticulum. |
2.5 points
QUESTION 15
Kinesin is the motor protein that coorporates with microtubules. It has the following functions:
1. | It uses GTP as energy source. | |
2. | It can hydrolyze ATP and use the energy to drive cargo along microtubules from minus end to plus end. | |
3. | It has a globular head that can act as GTPase | |
4. | The tail of kinesin is more diverse and binds to cargo |
2.5 points
QUESTION 16
For correct segregation and trafficking, lysosomal proteins are tagged in the cis-Golgi with phosphorylated mannose residues, and then the tagged lysosomal enzymes are recruited to clathrin coated vesicles by mannose 6-phosphate receptors.
True
False
2.5 points
QUESTION 17
The process that specialized cells, such macrophages, engulf relatively large particles is:
1. | Called pinocytosis | |
2. | Called phagocytosis | |
3. | Mediated by COP-II coated vesicles | |
4. | Called autophagy |
2.5 points
QUESTION 18
Proteins synthesized on rough endoplasmic reticulum and smooth endoplasmic reticulum are imported co-translationally to their destinations
True
False
2.5 points
QUESTION 19
Treatment of cells with a drug that promotes microtubule disassembly disperses Golgi complex into separate stacks of membrane compartments, suggesting that:
1. | Golgi complex is made of microtubules. | |
2. | Microtubules are important for the organization of Golgi complex. | |
3. | Microtubules are transported into Golgi complex | |
4. | Golgi complex is composed of tubulin proteins |
2.5 points
QUESTION 20
Which of the following is correct about signal sequence of a secretory protein?
1. | It is an âaddress codesâ for protein trafficking pathways | |
2. | It is usually located at the C-terminus. | |
3. | It targets the ribosome and the protein that is being synthesized to endoplasmic reticulum. | |
4. | It is removed in Golgi complex. |