<span>The concept of cell signaling is a communication network that is responsible for majority of the cellular activities. It is important that if the cell is deprived of this ability it will soon die. Since a cell is able to correctly interact with it's environment and perceive it, they are able to repair tissues, develop, and become immune to normal tissue homeostasis.
</span>
Carbon-14, also known as radiocarbon, is radioactive.
Answer:
Fully enclosed in an ovary
Explanation:
A gymnosperm is a group of a plant which can be distinguished from other groups of a plant is through the presence of seeds but they are not enclosed and are naked.
The seeds are considered naked as they are not fully enclosed in the ovary like in the angiosperms rather they are present as on modified leaves called sporophylls and the cones.
The seeds are sheltered by the sporophyll and when they mature are enclosed by the sporophytic tissues. Since they are not enclosed in the ovary, therefore, are considered the gymnosperms.
Thus, the selected option is correct.
A.<span> Air pollution............................</span>
<span>Coenzymes are
tiny and microscopic, nonproteinaceous molecules that gives a transfer site for
a functioning enzyme. They are intermediate carriers of an atom or group of
atoms, allowing a reaction to occur. Coenzymes are not part of an enzyme's structure, They are
sometimes referred to as </span>cosubstrates.
