Ans.
Cell-to-cell communication allows signalling of essential substances between the plant cells, which are surrounded by cell walls. The molecules used by plants for long-distance signalling are known as hormones, such as auxin, ethylene, and gibberelin.
These hormones are secreted by one plant cell and received by another plant cell, where it exerts it affect. Thus, the correct answer to be fill in the blank is 'option A). hormones.'
Answer:
Option B, chemical energy to thermal energy
Explanation:
All living organism feed on food that contains energy in the form of chemical energy. Once the food is intake and processed for fulfilling energy requirement of all metabolic processes with in a cell, the remaining energy is released as heat (thermal energy). Thus, an amoeba while consuming a sugar molecule converts chemical energy with in the sugar to thermal energy in the form of energy molecules.
Hence, option B is correct
Answer: (C) The production of tissue-specific proteins.
Explanation:
The cell differentiation is the process in which the cell change from one cell place to another place. It basically occur due to the process of gene expression.
The cell differentiation involve the production of the specific tissue protein known as muscle actin. In cell differentiation, the pluripotent stem cell basically go in the specific differentiation level and then reach in the state of fully differentiation.
The fully differentiation produced a specific function that the production of the protein. Therefore, option (C) is correct.
Answer:
Telescope also known as "spyglass"
Explanation:
In 1609, using this early version of the telescope, Galileo became the first person to record observations of the sky made with the help of a telescope. He soon made his first astronomical discovery.
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Answer;</u></h3>
-The name of the general was Leslie Richard Groves Jr. He Graduated fourth in his class<u><em> in the U.S. Military Academy at West point.</em></u>
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Explanation;</u></h3>
- <u>The name of the general was Leslie Richard Groves Jr. He graduated from the United States Military Academy of West point in the year 1918.</u>
- As an engineering aide, He led a small team of workers who helped produce the exterior casing of "Fat Man," a nuclear bomb dropped on Nagasaki, Japan, that hastened the Japanese unconditional surrender three weeks later.
