Answer:
The correct answer is A. Sunlight.
Explanation:
The ocean contains many plants and protists that can make their food, such as phytoplankton. These organisms are photoautotrophs, which means that they need light to photosynthesize, otherwise they would not be able to produce primary production.
Photosynthetic activity of marine organisms depends on luminous intensity, but solar light can only reach up to a certain depth in water, which is not much deeper than the surface. So every photoautotrophic organism must inhabit near the surface to get the necessary energy amount.
Each organism and species can live at different depth levels according to their needs, but all of them are restricted to the surface or near the surface because they need solar light.
The kingdom Animalia, which belongs to the Eukarya domain, is known for having organisms with cells that do not have cell walls. Other kingdoms, like Plantae and Fungi, typically have cell walls.
The kingdom known for containing organisms with cells that lack cell walls is the Animalia kingdom which exists within the Eukarya domain. In the classification of life, three main domains exist: Bacteria, Archaea, and Eukarya. The first two mainly include prokaryotic organisms which usually have cell walls. The Eukarya domain includes four kingdoms: Animalia, Plantae, Fungi, and Protista. Among these, it's typical for Plantae and Fungi to exhibit cell walls. Conversely, Animalia comprised of animals, do not have cell walls surrounding their cells. Their cells are surrounded by a plasma membrane which offers flexibility and aids in movement and interaction with the environment. This characteristic is one of the key distinguishers of the Animalia kingdom from other kingdoms.
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b. Lipids
c. Carbohydrates
d. Protein
The Nutrients that contains the most calories per gram are lipids (or fats), with 9 calories per gram compared to 4 calories per gram in both protein and carbohydrates.
Your question asks which one of the following nutrients that contains the most calories per gram.
The answer is lipids (or fats).
When we look at calories per gram, which is a measure of energy density, lipids contain more calories per gram than protein and carbohydrates.
In fact, lipids contain 9 calories per gram, while protein and carbohydrates each contain 4 calories per gram.
Vitamins do not contribute calories, but they are essential for various bodily functions.
This is why fatty foods are considered calorie-dense, meaning they have more calories per unit mass than other nutrients.
For example, animals tend to seek lipid-rich food for their higher energy content due to the high caloric content.
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The correct option is (b) Lipids.
Further Explanation:
Certain molecules or polymers are present in all the living organisms those molecules are known as biomolecules that include protein, carbohydrate, and fats. These different molecules provide a differential amount of energy to the living system.
Proteins- are the polymers that are made up of amino acids. Amino acids are linked to each other through peptide molecules.
Carbohydrate- they are the polymers that are made up of monosaccharide to further form disaccharide and polysaccharide. The bonds present between the sugar units in the carbohydrate molecules are known as the glycosidic bond.
Lipids- they contain long chains of fatty acids. It provides high energy or calorie per gram.
Vitamin- they are just the organic molecules that are required in low quantity by the organism to sustain life. It includes vitamin b, a, d, c, k, etc.
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Answer Details:
Grade: Middle school
Chapter: Biomolecules
Subject: Biology
Keywords:
Lipids, polymers, living organism, biomolecules, carbohydrate, protein, fats, amino acids, monosaccharide, disaccharide, polysaccharide, glycosidic bond, fatty acids, energy, organic molecules
Answer:
Hydrotropism causes cells to grow longer on one side of the roots.
Explanation:
Small aquatic organisms, such as coral, are the producers of the ocean.
F
b) provide essential amino acids.
c) prevent deficiency diseases.
d) provide fiber
Answer:
c) prevent deficiency diseases.
Explanation:
Vitamins are essential and specific organic compounds that are required mainly in the diet to facilitate the digestion of protein, however, they are not categorized with amino acids and as such they can't provide essential amino acid.
Vitamins are categorized into fat soluble vitamins(A,D,E and K) and water soluble vitamins (B anc C). Vitamins provides several to hundred of roles, majorly they helps to prevent deficiency diseases. Few of their roles are:
Vitamin A helps to prevent blindness. Food sources to obtain vitamin A include spinach, cod liver oil etc.
Vitamin D helps to maintain skeletal structure due to the calcium content embedded in Vitamin D. Therefore, lack of vitamin D can cause rickets.
Vitamin B-complexes e.g B-1 (thiamin) helps in synthesis of certain hormones, B-2 (riboflavin) which asssists in breakdown of fats and energy production. It can be gotten from Milk, youghurt etc. Deficiency in these vitamin B-complexes can cause heart-related disease, skin disorders, anemia etc.