Answer: Dinosaurs
Many forms of plants, invertebrates, and fishes evolved during the Mesozoic Era. Since the dinosaurs were the dominant animals on land then, the Mesozoic Era is called the Age of Reptiles. Dinosaurs, however, became extinct even before the end of the Era.
In organic molecules, the atoms are linked by covalent bonds. Organic molecules are generally large and may be complex, involving many such bonds. Inorganic compounds have considerably simpler structure in terms of number, but not necessarily type, of bonds. In organic molecules, to a first approximation, we may say that one bond does not affect another. Thus an atom such as a chlorine atom, -Cl, or a group of atoms such as the alcohol group, -OH, on one end of a molecule will behave chemically in the same way almost without regard to the molecule to which it is covalently attached. The idea of different independent or semi-independent atoms or groups of atoms on the same molecule is central to our modern understanding of organic chemistry. It is called the concept of functional groups. The nomenclature of organic compounds, like most of the rest of our understanding of reactions of organic compounds, is based upon the concept of functional groups.
Answer:
Answer is all the options are correct. A, B, C and D.
Explanation:
Systematists are the biologists that developed system of classification and naming of organisms.
On this aspect, gross morphological traits described the collective structures of an organism. It referred to all the structures that are found internally and externally.
The biochemical traits and molecular traits described the genetic variability of an organism. In this case, they explained that trait is an important feature in an organism.
The behavioral traits described some actions which are particularly found to be specific to certain species of organism.
Answer:
The appropriate order for the basic steps of protein synthesis are listed below
Explanation:
First step D The large ribosomal subunit joins the initiation complex preparing it for elongation stage.
Second step C Binding of mRNA by small Sub unit followed by association of a particular initiator aminoacyl tRNA that recognizes the first codon.
Third step B The P site is occupied by peptidyl tRNA carrying the growing polypeptide chain.
Fourth step A The elongation reaction transfers the peptide chain from the peptidyl tRNA in the p site to the aminoacyl tRNA in the A site.
Fifth step E The new longer Peptidyl tRNA moves from A site into the p site as the ribosome moves one codon further along the mRNA.
The main difference between haploid cells and diploid cells is diploid cells have two complete sets of chromosomes, while haploid cells only have one complete set of chromosomes.
