In an experiment investigating the mechanism of protein secretion, researcherstracked the movement of radioactively labeled polypeptides in pancreatic cells. At
various times after the labeling, samples of the cells were observed using an electron
microscope to determine the location of the radioactively labeled polypeptides.
Figure 1 summarizes the results at 5 minutes, 15 minutes, and 30 minutes. The dark
dots in the figure represent the radioactively labeled polypeptides.
Nucleus
Golgi
Secretory
Vesicles
Time
5 min
ER
15 min
30 min
Figure 1. Radioactively labeled polypeptides
Using the experimental results, describe the pathway that secretory proteins take
from their synthesis to their release from the cell. (3 Points)

Answers

Answer 1

Answer:

Answer/Explanation:

First, the polypeptides are synthesised and folded in the endoplasmic reticulum, which is a series of folded membranes.

Then, the polypeptide is packaged into vesicles and moved into the Golgi apparatus, which are stacks of flattened sacs. At the Golgi apparatus, the polypeptide is modified, forming the final structure of the protein. The proteins are then packaged in to vesicles to be transported to their final destination outside of the cell.

The proteins are delivered outside the cell in vesicles via a process called exocytosis. The vesicles reach the membrane, fuse with the membrane, and are then delivered outside the cell.

Related Questions

The red-cockaded woodpecker is found in the pine forests of Georgia. It eats insects found in the barks of the pine trees and nests in the trees. How will a reduction in the number of pine trees MOST LIKELY affect the red-cockaded woodpecker? A) It will decrease in number. B) It will adapt to a new habitat. C) It will build nests in other trees. D) It will hide better from animals that eat it.
What are ribosomes?
Why do allele frequencies give us genetic variation
The name for continents in one landmass surrounded by gigantic ocean
Give an example of a 'baleen skimmer'

Many cities suffer from serious air and noise pollution—as well as endless traffic jams—because of too many cars. Some people feel that cities with extensive public transportation systems should ban passenger cars and force people to walk, bike, or use public transportation. Do you think this is a good idea? Why or why not?

Answers

Answer: I do think its a good idea cause it lessens pollution in the air we breathe in and stops us from burning fossil fuels

Explanation:

Final answer:

Banning passenger cars and promoting public transportation in cities is a good idea for reducing pollution and traffic congestion.

Explanation:

I believe that banning passenger cars and promoting the use of public transportation in cities is a good idea. This approach can help reduce air and noise pollution, alleviate traffic congestion, and improve overall quality of life. By encouraging people to walk, bike, or use public transportation, cities can create a more sustainable and livable environment for their residents.

One example of a city that has successfully implemented this approach is Copenhagen, Denmark. The city has an extensive public transportation system, including a well-connected network of bike lanes. As a result, more than 60% of residents commute by bike or public transportation. This has significantly reduced air pollution and traffic congestion in the city.

Additionally, adopting this approach can have numerous benefits, such as promoting physical activity, reducing carbon emissions, and improving public health. Overall, I believe that cities with comprehensive public transportation systems should consider implementing policies that restrict the use of passenger cars in order to create a cleaner, more sustainable urban environment.

Describe the invasion of wild parsnip, including the harm it causes

Answers

Answer:

poisonus

Explanation:

Answer:

came from Europe and Asia

invaded the entire state of Wisconsin

can burn your skin

reproduces rapidly

can be removed at root or with a powered brush cutter for large populations

Explanation:

Sorry that it is late, but this is the Edge version.

Using the hardy-weinberg principle, which expression represents the frequency of the homozygous recessive genotype?

Answers

The Hardy-Weinberg Principle has two equations:
$p + q = 1\np^(2) + 2pq + q^(2) = 1$

Answer: The frequency of the homozygous recessive genotype is the value of $q^(2)$ .

What gametes are produced by the following organisms:_______. a. Genotype YyRr, if Y and R are on different chromosomes
b. Genotype YyRr, if dominant Y and R are on the same chromosome, no crossing over
c. Genotype YyRr, if dominant Y and recessive r are on the same chromosome, no crossing over
d. Genotype YyRr, if dominant Y and R are on the same chromosome, 50% crossing over

Answers

Answer:

The correct answer would be -

1- YR, Yr, yR and yr.

2. Yr, yR

3. YR, yr

4. YR, Yr, yR & yr

Explanation:

A mature male or female haploid germ cell that fuses with another gamete of the opposite sex during the process of fertilization to make a zygote in sexual reproduction.

The law of Independent Assortment presented by Mendel says that alleles for different traits are passed and assort independently of one another in the gametes.

1. If Y and R on different chromosomes then they will produce four gametes and assort independently - YR, Yr, yR & yr.

2) If Y and R on the same chromosomes and no crossing over occurs then they will produce only two gametes as Y and R will not come together - Yr & yR.

3). if dominant Y and recessive r are on the same chromosome, no crossing over then only two gametes will form as Y and r will not assort together - YR & yr.

4). if dominant Y and R are on the same chromosome, 50% crossing over produces 4 types of gametes, YR, Yr, yR & yr.

Will give 15 PointsBased on this graph, which type of gas is the most common in Earth's atmosphere?

Answers

Answer:

based on the graph the most common gas in the atmosphere would be nitrogen

Eukaryotic cells do NOT have a cytoplasm true or false

Answers

False is the correct

Other Questions

Which of the following would be the last step in the process of DNA fingerprinting? A DNA sample is obtained. B. Restriction fragments are separated. C. Restriction enzymes are used to cut DNA into fragments. D. DNA fragments containing repeats are labeled with radioactive probes.

Which of the folowing epithelia and/or cell surface modifications are present in large bronchi? (Check all that apply) a. clia b. goblet cells c. microvillid. pseudostratified ciliated columnar epithelium e. stratified squamous epithelium

What is the role of enzymes primase in the DNA replication?A. Primase relaxes the DNA double helix so that other enzymes can reach the DNA.B. Primase initializes replication by building short RNA primer complementary to the template. C. Primase seals any gaps between Okazaki fragments or Fragments of DNA. D. Primase is the enzyme that connects the ribosome to the DNA.

Some areas of an ocean are known as dead zones. These zones form when excess organic material decomposes. This increased decomposition uses up the oxygen from the water. Which human activity is most affected by the increasing number of dead zones in the ocean? A.Offshore oil drilling, because water in dead zones is toxicB.Commercial fishing, because fish cannot survive without oxygenC.Commercial shipping, because dead zones change the course of ocean currentsD.Sand mining, because oxygen is not available to form the sands on ocean beaches