No, a coenzyme is not a substrate. A coenzyme is a non-protein organic molecule that is required for the activity of certain enzymes. It acts as a carrier of specific functional groups or electrons during enzymatic reactions. In contrast, a substrate is the specific molecule upon which an enzyme acts to catalyze a chemical reaction. While coenzymes are essential for the function of certain enzymes, they are not the molecules upon which the enzymes act. **

NAD/NADH is a crucial coenzyme in metabolism as it plays a key role in redox reactions. NAD+ accepts electrons during catabolic reactions, such as glycolysis and the citric acid cycle, forming NADH. NADH then donates these electrons in anabolic reactions, such as the electron transport chain, to generate ATP. This cycling between NAD+ and NADH allows for the transfer of electrons and energy production in cells. **

To harvest crops in Minecraft, you simply need to right-click or left-click on the fully grown crop with any tool or with your bare hand. This will cause the crop to drop and be collected into your inventory. Make sure to wait until the crops are fully grown before harvesting them, as harvesting them prematurely will not yield any items. Additionally, using a tool with the "Fortune" enchantment can increase the yield of harvested crops. **

No, wheat and other crops do not harvest themselves in Minecraft. Players must manually harvest crops by breaking the fully grown plants with a tool such as a hoe. Once harvested, players can collect the crops and replant the seeds to continue growing more. There are no automated harvesting mechanisms for crops in the game, so players must actively tend to their farms to ensure a steady supply of food and resources. **

Everyone can harvest apples. Apples are a widely available fruit that grows in many different climates and regions, making them accessible to a wide range of people. Additionally, apple trees are often found in orchards or even in people's backyards, making it easy for individuals to pick their own apples. This accessibility makes apples a fruit that everyone can harvest. **

Fruit-bearing trees include apple, orange, mango, cherry, and peach trees. These trees produce fruits that are edible and often consumed by humans and animals. Fruit trees require specific conditions such as sunlight, water, and proper soil nutrients to grow and produce healthy fruits. **

Some common fruit trees that are well-suited for espalier include apple, pear, peach, and cherry trees. These trees have flexible branches that can be easily trained and pruned to grow in a flat, two-dimensional form along a trellis or wall. Other fruit trees that can also be espaliered include fig, plum, and apricot trees. It is important to choose fruit tree varieties that are suitable for your climate and growing conditions when selecting trees for espalier. **

Some fruit trees that are known to grow quickly include cherry trees, peach trees, and pear trees. These trees are relatively fast-growing and can produce fruit within a few years of planting. Additionally, apple trees and fig trees are also known for their relatively quick growth. It's important to note that the specific growth rate of fruit trees can vary depending on factors such as climate, soil conditions, and care. **