The questions from (1-5): Complete the following sentences with suitable words: 1- In ferns, the male genital organs are known as …….. and the female genital organs are known as ……. 2- The Shoulder bones of man consist of ……. and ……..bones. 3- The chromosomal number is …… in the endospermic nucleus. 4- The sequence of nucleotides in the gene enables us to know ……. In the corresponding protein. 5- Contraceptive pills stop ovulation during the time of its administration because it contain …….. 6- Describe by a labeled diagram only the structure of a sperm in man. The questions from (7-10): The opposite diagram represents steps of one type of immunity, answer the following questions:
7- What this diagram indicates? 8Mention the labels of this diagram 9Mention function of structure (1) and (3). 10- Why the complex resulting from the binding between the antigen and the MHC transfers to the plasma membrane of the macrophage. The questions from (11-12): Compare between: 11- Nucleic acid DNA and nucleic acid RNA. 12- Alpha and Beta cells of the pancreas. The questions from (13-17): Complete the following statements with the suitable answer: 13-Amino acids in a protein molecule are joined with each other through …….(nitrogenous bases – peptide bonds – phosphate groups – hydrogen bonds) 14In man, There are …… pairs of ribs. (12 – 16 – 20 – 24) 15- The walls of plant cells become stronger, ………. Is deposited in them. (cutin – suberin – cellulose – all the previous) 16- ….. is an example of Non-protein amino acids that resist the pathogens in