Answer:
Option B, Mammals and reptiles in the post-dinosaur age.
Explanation:
Adaptive radiation is mechanism through which species evolve very fast from common single ancestors. In simple words two different species are said to have evolved through adaptive radiation when they have descended from a single lineage. This is not the case with mammals and reptiles.
Generally in adaptive radiation, a species evolve when it faces new environmental challenges due to change of habitat or area. For example mammals have evolved from dinosaurs.
Hence, option B is correct
It would not be plants, even though it has cell walls. They are not made of chitin. Plants are also not heterotrophic.
Fungi, however, decompose other matter, and have cell walls made of chitin. This would fit the description.
Nucleic acids, proteins, carbohydrates, and lipids are the four major types of biomolecules that form all living things. These biomolecules consists of monomers linked together by covalent bonds to form polymers.
- Nucleic acids, proteins, carbohydrates and lipids can be classified according to their basic elements, monomer constituents, and functions.
Basic elements:
- Nucleic acids: Hydrogen (H); Carbon (C); Oxygen (O); Nitrogen (N); Phosphorous (P)
- Proteins: Hydrogen (H); Carbon (C); Oxygen (O); Nitrogen (N); Sulfur (Z)
- Carbohydrates: Hydrogen (H); Carbon (C); Oxygen (O)
- Lipids: Hydrogen (H); Carbon (C); Oxygen (O); Phosphorous (P)
Monomer constituents:
- Nucleic acids: nucleotides
- Proteins: amino acids
- Carbohydrates: monosaccharides
- Lipids: fatty acids and glycerol
Functions:
- Nucleic acids: contains the hereditary information to synthesize proteins
- Proteins: regulate metabolic processes (enzymes), the main biomolecule of cellular structures
- Carbohydrates: store energy (short term); form cellular structures
- Lipids: store energy (long term); the main component of biological membranes
Examples:
- Nucleic acids: DNA and RNA
- Proteins: lactase; collagen
- Carbohydrates: starch (polysaccharide); glucose (monosacharide)
- Lipids: phospholipids; cholesterol
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Hi!
The answer is B. chloroplast because prokaryotic cells don't have contractile vacuoles, DNA, or a nucleus.
Hope this helps! :))<span />
