Biology

3. A cell which contains only one set of chromosomes
6. Phagocytic white blood cells are also known as.....
8. A disease that is transferred by mosquitos.
9. What is the first step in protein synthesis?
10. Are protein molecules which can be defined as biological catalysts
11. An ..... is a particular variety of a gene.
14. The smaller molecules from which DNA and RNA molecules are made
18. Are involved in seed germination and controlling stem elongation
19. A type of allele that when present on its own will not affect the individual
20. The removal of these unwanted products of metabolism
21. Tiny air sacs that function as basic respiratory units

1. is the control of body temperature
2. These are finger-like extensions of the cell surface membrane
4. Plant cells are linked to neighbouring cells by means of fine strands of cytoplasm called......
5. Any agent that causes cancer is called.....
7. The parts of a flower that are often conspicuously colored
12. An organ used for breathing
13. The ends of chromosomes are ‘sealed’ by structures called .....
15. Is a long molecule that contains our unique genetic code
16. The type of nuclear division that halves the chromosome number
17. Involves the engulfing of the material by the cell surface membrane to form a small sac