An Introduction To Biology

Explanation
Carbohydrates are a type of sugar, and all types of sugars are known as carbohydrates. Sugars are simple carbohydrates, while complex carbohydrates include starches and fibers. Carbohydrates are an essential source of energy for the body and are found in various foods like fruits, vegetables, grains, and dairy products. They play a crucial role in providing fuel for cellular processes and are an important part of a balanced diet.

Explanation
Polyunsaturated fatty acid is not a type of sugar. Sugars are carbohydrates, specifically monosaccharides, disaccharides, and polysaccharides. Polyunsaturated fatty acids, on the other hand, are a type of fat.

Explanation
Carbohydrates can indeed be classified into three categories. These categories are monosaccharides, disaccharides, and polysaccharides. Monosaccharides are the simplest form of carbohydrates and cannot be broken down any further. Examples include glucose and fructose. Disaccharides are formed when two monosaccharides join together through a process called dehydration synthesis. Examples include sucrose and lactose. Polysaccharides are complex carbohydrates made up of long chains of monosaccharides. Examples include starch and cellulose. Therefore, the statement "Carbohydrates can be broken down into three categories" is true.

Explanation
Ecology is not solely the study of plants. It is a broader field that encompasses the study of the relationships between organisms and their environment, including both plants and animals. Ecology examines how organisms interact with each other and their physical surroundings, such as the air, water, and soil. Therefore, the statement that ecology is the study of plants is incorrect.

Explanation
The end product of photosynthesis is glucose. During photosynthesis, plants convert sunlight, water, and carbon dioxide into glucose and oxygen. Glucose is a simple sugar that serves as a source of energy for plants and is also used to produce other complex carbohydrates like starch and sucrose. Galactose is not a direct product of photosynthesis, and while starch is a storage form of glucose in plants, it is not the immediate end product of photosynthesis.

Explanation
Plants produce glucose as the main product and oxygen as a by-product through the process of photosynthesis. Glucose is a type of sugar that serves as a source of energy for the plant. It is essential for the plant's growth and development. Oxygen, on the other hand, is released into the atmosphere as a waste product of photosynthesis. This process allows plants to convert sunlight, water, and carbon dioxide into usable energy in the form of glucose, while also releasing oxygen into the environment.

Explanation
Starch and glycogen are both polysaccharides because they are composed of long chains of glucose molecules. Starch is the main energy storage molecule in plants, while glycogen serves as the primary energy storage molecule in animals. Both polysaccharides are made up of alpha glucose units linked together by glycosidic bonds. Therefore, it is correct to say that starch and glycogen are both polysaccharides.

Explanation
The statement is false because a carbohydrate, a polysaccharide, and starch are not forms of salt. Carbohydrates are organic compounds that consist of carbon, hydrogen, and oxygen, while polysaccharides are complex carbohydrates made up of many sugar molecules bonded together. Starch is a type of polysaccharide that serves as a storage form of energy in plants. Salt, on the other hand, is a compound made up of sodium and chloride ions.

Explanation
Ecology is the study of the relationships between organisms and their environment, including both plants and animals. It focuses on understanding how organisms interact with each other and their surroundings, including the physical and biological factors that influence their behavior, distribution, and abundance. This field of study helps us understand the complex web of life on Earth and how it is influenced by factors such as climate change, habitat destruction, and human activities.

Explanation
Ecology is the study of the biotic and abiotic components of an ecosystem. It focuses on the relationships between organisms and their environment, including the interactions between living organisms and their physical surroundings. Ecology examines how organisms adapt to their environment, how they interact with other organisms, and how they influence their ecosystem. By studying ecology, scientists gain a better understanding of the complex web of life and the interconnectedness of all living things.