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Without a cytoskeleton eukaryotic cells would not be able to carry out many essential processes including cell division. Which of the following statements is true?

a. Cells that do not divide as they are in G0 phase, no longer need to produce microtubules

b. Microtubules are the smallest type of cytoskeleton element

c. During cell division, the mid-body organizes the microtubules that attach to the chromosomes

d. Transport proteins can move along microtubules to move vesicles around the cell

e. Because the subunits of microtubules already contain GTP, transport proteins do not require ATP to power their movement

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Related questions

Movement of vesicles within the cell depends on what cellular structures?

centrioles and motor proteins
microtubules and motor proteins
actin filaments and motor proteins
actin filaments and microtubules
actin filaments and ribosomes

Why is water considered a polar molecule?

The negatively charged oxygen atom attracts the positively charged hydrogen atoms.
The oxygen is found between the two hydrogens.
It remains liquid even at very low temperatures.
Both hydrogens are at one end of the molecule, and oxygen is at the other end.
Its electrons spend more time with its oxygen than with either hydrogen.

Which of the following is a major difference between prokaryotic cells and eukaryotic cells?

Prokaryotes have cells while eukaryotes do not.
Eukaryotic cells have more intracellular organelles than prokaryotes.
Prokaryotes are generally larger than eukaryotes.
Prokaryotes are not able to carry out aerobic respiration, relying instead on anaerobic metabolism.

Which of the following is not a necessary component of life?

needs energy
uses DNA for heredity
breathes oxygen
irritability
depends on other living forms

Lipids _____.

contain less energy than proteins and carbohydrates
are made by dehydration reactions
are insoluble in water
contain sulfur polymers
are made from glycerol, fatty acids, and nitrogen

What is biology?

the study of life
the study of genetics
the study of biomes
the study of the environment
the naming and classifying of species

_____ is an example of an element.

Methane
Water
Carbon
Salt
Glucose

With what are saturated fats saturated?

carbon
nitrogen
hydrogen
phosphorus
oxygen

Beryllium's atomic mass is 9, and its atomic number is 4. How many neutrons are found in a beryllium atom?

2
5
13
9
4

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.

Flag this Question

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

the rough produces lipids where as the smooth does not
the rough has many folds and convolutions where as the smooth does not
the rough has ribosome embedded and the smooth does not
the rough is closer to the cell membrane whereas the smooth is closer to the nucleus

Question 10

The site where many lipids, including cell membrane is produced.

rough ER
nucleus
smooth ER
lysosomes

Question 11

Name the organelle: In muscle cells in particular, I would increase in number and size in response to frequent exercise

mitochondria
nuclei
ribosomes
nucleoid

Question 12

In animal cells, glucose would be mobilized from its storage molecule (glycogen) in this part of the cell.

rough ER
mitochondrion
nucleus
smooth ER

Question 13

Which of these is associated with the rough ER

production of carbohydrates
production of steroid hormones
production of ATP
production of proteins that are secreted from the cell

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

father
half from your mother and half from your father
your siblings

mother

Question 17

An organelle that contains chlorophyll

chlorosomes
chlorochondria
chloroplasts
chlorophytes

Question 18

Microtubules have a variety of roles, which of the options below is NOT one of them?

separate chromosomes
cilia and flagellum movement
tracks for organelle movement
constrict the cell during cell division

Question 19

Made of tubulin subunits

microfilaments
chromosomes
intermediate filaments
microtubules

Question 20

Name the part of the cytoskeleton that is made of two twisted rods of actin. Write one word as the answer in lower case.

Question 21

Which part of the cytoskeleton is made of the same protein as your hair and nails?

microfilaments
microtubules
Intermediate filaments

Question 22

The extracellular matrix is found outside of, but attached to the cell membrane?

True
False

Question 23

Which of the options below is an important function of the extra cellular matrix?

connecting cells together
regulate the movement of substances into and out of the cell
helping cells divide into two cells
keeping the cell in a fixed and ridged shape

Question 24

Which part of the cell wall has a high pectin content?

secondary cell wall
extracellular matrix
primary cell wall
middle lamella

Question 25

Plants have mitochondria, chloroplasts, a cell wall, and nuclei.

True

False

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


1. Name two similarities and two differences between thecellular processes of importing

protein into the ER and importing protein to the nucleus.

2. What proteins are directly involved in the transportation ofcargo in a clathrin-coated

vesicle?

a. Dynamin

b. Adaptins

c. Cargo receptors

d. t SNARES

3. Suppose a cell was treated with colchiine, a drug causingmicrotubule disassembly.

What would happen within the cell? Why?

Suppose there were a genetic defect in the genes that code forkinesins and dyneins.

What would happen within the cell? Why?

4. Which of the following are true about microtubules?

a. They are utilized by the disease causing bacteriaLysteria.

b. Instability in the minus-end of the microtubule is caused bythe hydrolization of GTP.

c. Centrosomes contain binding sites for microtubules composed atype of tubulin ring.

d. Cellular concentrations of tubulin are above the criticalconcentration for plus-end

polymerization.

e. Motor proteins can attach organelles to the microtubules.

5. Indicate which of the following statements are false:

a. Membrane fusion is energetically unfavorable and thusrequires ATP or similar high

energy molecule to occur

b. Clathrin is responsible for capturing specific molecules fortransport in coated vesicle

structures.

c. Receptor proteins that are incorporated into an endosome canbe retrieved back to the

membrane domain it originated from; can return to a new domainof the membrane; or

can enter the lysosome for digestion.

d. Transport vesicles occasionally bud from the trans Golginetwork to fuse with the

plasma membrane in a process called constitutive exocytosis.

e. Most components of the endocytic vesicle membrane eventuallyare returned to the

plasma membrane for reuse.

6. Match the following organelles with their function:

Organelle Bank:

a. Mitochondria

b. Endoplasmic reticulum

c. Nucleus

d. Lysosome

e. Endosome

f. Peroxisome

g. Golgi apparatus

_____ quality control of mRNA

_____ location of oxidative phosphorylation

_____ responsible for detoxifying organic molecules (livercells)

_____ houses and protects genetic material

_____ responsible for modification and sorting of proteins andlipids

_____ location of ATP synthesis

_____ responsible for sorting endocytosed materials

_____ site of degradation and digestion

_____ responsible for oxidizing toxic molecules

_____ location of lipid synthesis

_____ location of hormone synthesis (adrenal cells)

B. Which organelle(s) from the above list communicate(s) withother organelle(s)

through the use of vesicular transport? ________________

C. Which organelle(s) from the above list receive proteins madein the

cytosol?___________________

D. Through which organelle(s) must proteins pass to reach theorganelle(s) which do not

receive proteins made exclusively in thecytosol?______________

E. Entrance into which organelle(s) requires that proteinsunfold and snake through the

membrane? _________________

F. How do organelles maintain their position in the cytosol? Bespecific.

G. Give 2 advantages that eukaryotic cells gain by havingorganelles.

7. Which of the following statements are true regardingactin?

a. They are arranged in a

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