🚨Z-bacteria, fungi, enzymes and Yeast Flashcards
One example of a beneficial effect of bacteria, other than the production of antibiotics, and one example of a harmful effect of bacteria
Benefits: vaccine production and produces vitamins in digestive system.
Harmful: causes disease and food decay
Name the specific math of of asexual reproduction used by bacteria
Binary fission
Describe the process of binary fission
DNA replicates,
Cell elongates,
Cell splits into two
Describe batch processing (process)
Fixed amount of nutrient added,
Product removed at the end,
Bacteria go through all stages of growth curve
Explain why the overuse of antibiotics is potentially dangerous
Development of resistant bacteria
How do certain bacteria survive when environmental conditions be some unfavourable
They form an endospore
One example of a beneficial virus
Bacteriophages,
Used to treat certain tumours and in genetic engineering
Describe how a virus replicates
Virus attaches to host cell,
Viral nucleus acid into host cell,
Host structures are used,
Cell bursts
Why are viruses not considered to be living
No organelles,
No metabolism
How does the genetic makeup of the new yeast cell relate to that of the parent cell and explain answer
Give an advantage and disadvantage of the asexual reproduction in organisms such as yeast
Name two organism that belong to the same kingdom as yeast
Define the term “obligate parasites” in relation to viruses
Can only replicate/ reproduce in a cell
One virus that can cause diseases in plants
Mosaic virus
How do scientists distinguish between different viruses
Structure,
Type of nuclei acid,
Shape of protein coat
Why are viruses difficult to classify into a kingdom
They are non cellular
Give one way in which viruses are economically important to humans
Used to manufacture vaccines or,
Genetic engineering
2015 q 8
