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6. _____ layer that helps maintain blood pressure by stretching and springing back.

  • Elastic
  • Fat
  • Springy
  • Muscle

7. Molecule that carries oxygen molecules from the lungs to respiring muscle cells.

  • Haemoglobin
  • Red blood cells
  • Glucose

8. What one bacterium passes to another through the (16) tube.

  • Plasmid
  • Linear ribosome
  • Lipase

9. Pathway water can move through the cytoplasms of cells.

  • Symplastic
  • Apoplastic
  • Transpirational

10. Meiosis occurs in cells called _______.

  • Sperm and eggs
  • Gametes
  • Meiotic cells

11. Name given to plants adapted to survive in dry conditions.

  • Pioneers
  • Xerophytic
  • Zerophytic

12. Agriculture normally reduces genetic _______.

  • Diversity
  • Pool size
  • Variation

13. Horizontal gene transmission is where on bacterium inserts a __________ tube into another.

  • Informational
  • Conjugation
  • Joining

14. Pathway water can move through spaces in cell walls.

  • Apoplastic
  • Symplastic
  • Transpirational

15. Taxonomic group beginning with 'O'.

  • Odus
  • Order
  • One

16. Half the number of chromosomes.

  • Haploid
  • Diploid
  • Half-chromosomal

17. Haemaglobin has an ________ for oxygen.

  • Attraction speed
  • Association
  • Affinity
  • Association curve

18. The name of non-coding DNA.

  • Intron
  • Codon
  • Exon
  • Incodon

19. Highest taxonomic group.

  • Kingdom
  • Phylum
  • Class