Pancreatic cells, which secrete a large amount of digestive enzymes, are labeled with radioactive leucine and then chased for several hours withnonradioactive leucine. Photographic emulsions are prepared at different times during the chase. Where would the black spots appear on an emulsionprepared 3 hours after the pulse?- Rough ER
- Secretory vesicles
- Golgi apparatus
- Exterior of the cell

Answers

Answer 1

Answer:

Answer:

The answer is: Exterior of the cell.

Explanation:

Black spots would appear on the exterior of the cell after 3 hours, indicating that the proteins had been secreted from the cell.

This due to:

Exocytosis_ is the process of moving materials from within a cell to the exterior of the cell. This process requires energy and is therefore a type of active transport.

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Water is considered a polar molecule because _____. it has partial positive and negative charges at each end
it expands when it freezes
it dissolves solutes

Answers

Answer: Option (a) is the correct answer.

Explanation:

A water molecule contains two hydrogen atoms and one oxygen atom. The chemical formula of water is $H_(2)O$ .

Here, hydrogen is electropositive whereas oxygen atom is electronegative in nature. Hence, oxygen atom pulls electrons from hydrogen atom and as a result partial positive charge develops on hydrogen and partial negative charge develops on oxygen atom.

Therefore, molecule of water becomes polar in nature.

Thus, water is considered a polar molecule because it has partial positive and negative charges at each end.

Answer:

The answer is It has partial positive and negative charges at each end.

Explanation:

When a neutral molecule has a positive area at one end and a negative area at the other, it is a polar molecule. Water is a polar molecule, because there is an irregular distribution of electron density in it. This means that water has a negative partial charge near the oxygen atom and a positive partial charge near hydrogen atoms.

Which term describes stacks of thylakoids?a. chloroplasts
b. grana
c. stroma
d. ferredoxins

Answers

Grana is the term that describes stacks of thylakoids.

Lee and Celia are lab partners. While Celia pours a chemical into a graduated cylinder, some of the chemical splashes onto her arm. What should happen next?

Answers

She Should Go To A Washing Station To Get The Chemicals Off Of Her Arm

What part of the human body uses lactic acid fermentation

Answers

Explanation:

Lactic acid is mainly produced in muscle cells and red blood cells. It forms when the body breaks down carbohydrates to use for energy when oxygen levels are low. Times when your body's oxygen level might drop include: During intense exercise.

How do cells in the ovary detect a hormone from the brain?

Answers

By receptors on these cell that recognizes the hormones

NOT a major accomplishment of the Kennedy administrationA. the New Frontier
B. the Great Society
C. the Peace Corps
D. Nuclear Test Ban Treaty

Answers

The Great Society is NOT a major accomplishment of the Kennedy administration. The answer to your question is B. I hope this is the answer that you are looking for and it comes to your help.

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