<u><em>-Describe the structure and function of the Golgi apparatus </em></u>
Structure:
- Stacked flat sacs
- It is found within the cytoplasm of both plant and animal cells
- The Golgi is composed of sacks of membrane-bound structures
Function:
- The cell synthesize a huge amount of macro-molecules.
- Main function is to modify, sort and package the macro-molecules that are synthesized by the cells
- Secretion purposes or for use within the cell
- Mainly modifies the proteins that are prepared by the RER
- Creates Lyosomes
<u><em>-Describe the structure and function of the lysosome.
</em></u>
Structure:
- Spherical organelles
- Contains enzymes
Function:
- Breaks down food particles, invading objects, or worn out cell parts
- Digests macro-molecules
- Cleans up broken down organelles
- Storage of digestive enzymes
The things that are impervious to water are objects that are waterproof. Example of waterproof objects are as stones and steel. I hope this answer helps. Looking forward to help you again.Have a great day!
Answer:
The correct answer is 4.6 percent.
Explanation:
The Oort cloud refers to the clouds of icy objects, which is present in the outermost section of the solar system. These are the disperse layer of clouds found in the external layer of the solar system.
In the given question, it is given that the number of comets in the Oort cloud is 10^12 comets.
The number of comets getting close towards the Sun is 10 comets in a year.
The age of the solar system is 4.6 * 10^9 years
The number of comets used since the start of the solar system is,
(4.6 * 10^9 years) (10 comets/year)
= 46 * 10^9 comets
Thus, the number of comets disappeared since the beginning of the solar system is 46 * 10^9 comets.
The initial number of comets at the start of the solar system is 10^12 comets.
The percentage of comets that are used up are:
(change in no of comets) / (initial no of comets) % = (46 * 10^9 comets) / (10^12 comets) * 100
= 4.6 percent.
Answer:
A) is the right answer in think