Cactus species have evolved to cope with hot dessert habitats by storing large amounts of water and growing spines instead of leaves. This reduces the plants surface area and minimizes the amount of water that is lost through evaporation. 2) The trait of spines on cacti: (1) Appeared in ancestral cacti because they lived in deserts and needed spines to reduce water loss Appeared in cacti because of a chance mutation. a) Only the top statement is correct. b) Only the bottom statement is correct. c) Both statements are correct. d) Neither statement is correct. (1I)
Nucleotides
It is an organic molecule made up of three basic components- a nitrogenous base, phosphate,and pentose sugar. The nucleotides are important for metabolic reactions andthe formation of DNA (deoxyribonucleic acid) and RNA (ribonucleic acid).
Nucleic Acids
Nucleic acids are essential biomolecules present in prokaryotic and eukaryotic cells and viruses. They carry the genetic information for the synthesis of proteins and cellular replication. The nucleic acids are of two types: deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). The structure of all proteins and ultimately every biomolecule and cellular component is a product of information encoded in the sequence of nucleic acids. Parts of a DNA molecule containing the information needed to synthesize a protein or an RNA are genes. Nucleic acids can store and transmit genetic information from one generation to the next, fundamental to any life form.
Step by step
Solved in 2 steps
