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Pancreatic beta cells secrete the hormone insulin to regulate blood glucose levels. Which of the following organelles are beta cells most likely to have in abundance and why?

a.

Mitochondria – because insulin is also used to synthesize ATP
b.

Peroxisomes – because excess insulin must be recycled to avoid toxic levels
c.

Smooth ER – because insulin is a steroid hormone like testosterone
d.

Centrosomes – because extra microtubules are needed for insulin transport
e.

Plasmodesmata – because insulin is secreted through plasmodesmata in the cell membrane.
f.

Rough ER – because insulin is a secreted protein synthesized by bound ribosomes

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Related questions

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

________30. If you are investigating the inner structure of a new cell and see that it has a significantly larger amount of RER than other cells. You would conclude the cell does a great deal of____?
A. ATP synthesis

B. protein synthesis
C. DNA synthesis
D. active transport
E. polysaccharide hydrolysis

________31. If a cell comes in contact with a toxic substance such as H2O2, it could survive as long as it has a ___ to digest it.
A. DNA
B. peroxisome

C. mitochondria
D. phospholipids
E. intermediate filaments

________32. Some cells have structures to help them withstand osmotic pressure. For example,
A. Plant cells due to their walls
B. Animal cells due to the sodium/potassium pumps

C. Bacterial cell due to their swimming

D. Viruses due to their protein coats

________33. Evolution occurs only as a cell ____.

A. They undergo mitosis
B. Change in their gene pool
C. They move from one habitat to another

D. They begin to eat different foods

________34. Ribosomes are produced in the

A. nucleoli.
B. chromatin.
C. nuclear envelopes.

D. Golgi complex. E. cisternae.

________35. Algae are often green, but there are red and brown species also. What accounts for this difference in color?
A. The chlorophyll of chloroplasts
B. The pigments in other plastids

C. The presence of a mitochondria
D. The accumulation of cellular wastes

________36. The chloroplast and other like prokaryotes have which of the following that helps with photosynthesis?
A. They live in water based environments
B. They have chloroplasts in their cytoplasm

C. Change color in the dark vs. the sun
D. They have photoreceptor proteins in their membranes or mesosomes.

________37. Located in the membrane, we see a set of proteins called receptors that only connect with or bind to specific substances. This is called __.
A. ligand specificity.
B. hormone selectivity.

C. cell tonicity.
D. water saturation. E. signal resolution.

________38. Of the following statements, we could say that ___ is false.
A. All organisms are composed of cells and cell products.
B. An organism's structure and all of its functions are due to the activities of cells.
C. The cellular organelles are the simplest structural and functional unit of life.
D. Cells come from preexisting cells.
E. Cells are made from nonliving components including the nucleus, cell membrane and cytoplasm.

________39. If it is really true that our cells are the smallest anatomical unit that meets all of the properties of life, then which of the following could imply otherwise?
A. vacuoles
B. centrioles

C. Golgi apparatus
D. mitochondria
E. endoplasmic reticulum

________40. Oxygen is an absolute need for animal and plant cells alike due to the ___.

A. RER
B. Mitochondria
C. Lysosomes

D. DNA

________41. In a plasma membrane, we expect to see the carb/protein structures to extend into the ___, but the secondary messengers to move within the __.
A. extracellular fluid; cytosol
B. cytosol; extracellular fluid

C. intracellular fluid; cytosol

D. cytosol; intracellular fluid

E. extracellular fluid; plasma

________42. Bacteria are found in all of the following habitats:

A. Caves
B. Oceans
C. Animals

D. Everywhere on Earth

________43. Two solutions are separated by a selectively permeable membrane. Solution A has a higher concentration of an impermeable solute compared to solution B. Which of the following do you expect would happen?
A. solute will move from solution A to solution B

B. solute will move from solution B to solution A

C. water will more from solution A to solution B

D. water will move from solution B to solution A E. no movement of solute or water will occur

________44. In the kidney, we notice that almost all of the cells involved in the production of urine have high concentrations of the Na+/K+ pump. Which typically works to push Na+ ___ its concentration gradient by using ___.
A. up; active transport

B. up; facilitated transport
C. up; cotransport
D. down; active transport
E. down; facilitated transport

________45. In the charts of a patient recently admitted to the hospital noted that he was taking a medication called lithium and high doses of calcium supplements. Given this, we would expect the patient’s liver to have a higher than normal amount of __ to purify out the lithium and calcium.

A. lysosomes.
B. centrosomes.
C. mitochondria.
D. peroxisomes.
E. rough endoplasmic reticulum.

________46. We have long observed that our neural cells in the brain cannot replicate or replace themselves due to the lack of ____.
A. produce ATP.
B. divide.

C. produce enzymes.
D. secrete material across their plasma membrane E. conduct electrical signals.

________47. An organism’s structure and function is ultimately due to the structure and function of it’s __.
A. Organs
B. Tissues

C. Cells

D. Nuclei

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