Answer:
d. the pattern of proteins on the cell's surface
Explanation:
Cell to cell interaction is a very important phenomenon for a multicellular organism where the cells have to coordinate and cooperate to perform similar functions.
The cell interacts with another cell through chemicals which could act as signals to another cell.
The cell to cell interaction depends on the recognition of another cell which is mediated by the proteins.
The proteins are present on the cell membrane in the form of receptors and recognition proteins which could be arranged in the pattern. It is the pattern of the proteins which define the specificity to the recognition of the cell.
Thus, option-D is the correct answer.
Explanation:
The lungs are specialized organs in the process of inspiration and expiration. They are part of the pulmonary system. Lung tissue is elastic which allows it to inflate and deflate without losing its shape. Therefore, the lung tissue is not rigid. On the other hand, the lungs must be of sufficient size to satisfy the vital respiratory processes of the organism that possesses them. In humans, the lungs are large. The weight depends on the sex and the hemithorax they occupy, but approximately the right lung weighs an average of 600 grams and the left reaches an average of 500.
Then, we can conclude that the correct answer is:
Answer:
4)Lungs are large and spongy.
Answer:
1. CLIMATE CHANGES............easing temperatures have altered migration patterns of humpback whales.
2. NATURAL DISASTERS...........the eruption of mount saint Helens destroyed some populations of conifers.
3. HUMAN EXPLOITATION..........African forest elephants have been hunted to near extinction levels to obtain ivory.
4. DISEASES.........An infection with a fungus reduced population of north American elm trees.........
I HOPE THIS ANSWER WAS HELPFUL
Explanation:
Answer:
if there is a mutation in genetic material then cell cannot correct it
Don’t mind me just need to answer a question
