1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Marianna [84]
3 years ago
12

Pancreatic cells, which secrete a large amount of digestive enzymes, are labeled with radioactive leucine and then chased for se

veral hours with nonradioactive leucine. Photographic emulsions are prepared at different times during the chase. Where would the black spots appear on an emulsion prepared 3 hours after the pulse?
A. Golgi apparatus
B. Secretory vesicles
C. Exterior of the cell
D. Rough ER
Biology
1 answer:
LiRa [457]3 years ago
5 0

Answer:

Option-C

Explanation:

A pulse-chase experiment which is used to study the cellular process taking place in the cells. This uses the labelled molecule which is incorporated into the cellular pathway and then the unlabeled molecules are used over time to determine how much time is required by the unlabeled molecule to replace the labelled molecule.

In the given question, the pancreatic cell which secretes the digestive enzyme known as the acinar cell is labelled with the leucine and then used unlabeled leucine.

When observed after three hours, the black spots will appear on the exterior of the cell as the protein has been synthesised by the ER and now has been secreted from the cell.

Thus, Option-C is the correct answer.

You might be interested in
List at least two possible reasons for the differences you see between the pinch strength of the first two fingers and the secon
andriy [413]

Answer:

The first two fingers may be stronger due to the fact that they are used the most often and could build up more strength and dexterity. Another reason the first two fingers may be stronger could be due to the fact that the ulnar muscle that controls digits 4 and 5 is smaller than the radial muscle.

Explanation:

Pinch strength is a widely used measurement of hand function. A direct relationship between pinch strength and function has been demonstrated and illustrates the importance of hand strength in clinical practice.There is a difference in grip strength in the dominant and non-dominant hands.Dominant hand  is significantly stronger. According to the pinch strength data, he index finger and the thumb are the strongest, the middle finger and the thumb are the second strongest, the ring finger and the thumb are the third strongest, and the little finger and the thumb are last. The difference is the largest between the middle finger and the thumb and the ring finger and the thumb.

The first two fingers may be stronger due to the fact that they are used the most often and could build up more strength and dexterity. Another reason the first two fingers may be stronger could be due to the fact that the ulnar muscle that controls digits 4 and 5 is smaller than the radial muscle.

Difference in the pinch strength may be due to one possible reason that the radial muscle is larger than the ulnar muscle which controls digits 4 and 5. Another reason could be that you generally use the thumb, index, and middle fingers more than the ring and little finger, therefore the first three fingers have more strength and muscle memory.

8 0
3 years ago
A skeleton muscle is a composition of several components bundled one into the other.
Ivan

Answer:

An individual skeletal muscle may be made up of hundreds, or even thousands, of muscle fibers bundled together and wrapped in a connective tissue covering. Each muscle is surrounded by a connective tissue sheath called the epimysium. Fascia, connective tissue outside the epimysium, surrounds and separates the muscles.

Explanation:

8 0
2 years ago
A carrier in a pedigree represents a shape that is?
frozen [14]
C. Half shaded and half white.
6 0
3 years ago
Do the six kingdoms each have a purpose in the real world today like it did back then.
Nuetrik [128]
I’m assuming the six kingdoms of life, but yes they do have a very large purpose for providing characteristics to bacteria, animals, fungi, humans, etc.
3 0
3 years ago
Which property of igneous rocks does the rate of cooling influence the most
Paha777 [63]
The rate mainly effects the size of the crystals in the rock forming
5 0
3 years ago
Other questions:
  • The phase of the bacterial growth curve in which newly inoculated cells are adjusting to their new environment, metabolizing but
    13·1 answer
  • How many cell divisions would it take to produce at least 1,000 cells from one cell
    6·1 answer
  • 1 9.3.2 Quiz: Variation and Adaptation
    11·1 answer
  • All of the following are advantages of decentralization except
    6·1 answer
  • What is the total surface area of a human lung
    9·2 answers
  • 16. The genetic variation that leads to evolution can occur when genes from
    13·2 answers
  • *HELP*
    5·1 answer
  • WILL GIVE BRAINLIEST I PROMISE.
    11·1 answer
  • Through _____ large molecules are formed
    6·2 answers
  • What was Mendel the first researcher to discover?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!