Microbial growth

Question 1

What is mitosis?

Answer 1

Diploid division of cell. Hproducesthe exact copy and is considered asexualreproduction

Question 2

What is meiosis?

Answer 2

Haploid division of cell.sexual reproduction

Question 3

What is binary fission ?

Answer 3

Asexual reproduction. The cell grows then divides once it gets to about twice the size of it’s original size.

Question 4

What is budding?

Answer 4

daughter cell that is produced asexually and unequally

Question 5

How does the cell affectenvironment?

Answer 5

Products produced from metabolismcan have a negative or positive effect on the environment

Question 6

How can the environment affect the cell?

Answer 6

Can either increase ordecrease growth’ environmental factors include: temperature, pH, osmotic pressure/moisture, substrate availability

Question 7

How does the cold affect amicrobe?

Answer 7

It slows down the growth.h does not kill it, it preserves it.

Question 8

What are acidophiles?

Answer 8

Microbes that grow in pH levelsless than 7 . In acidic environment.

Question 9

What are obligate aerobes?

Answer 9

They need O2 and have the enzymes needed to process toxic oxygen products

Question 10

Facultative organism?

Answer 10

. It is an iorganism thatcan stillgrow even without oxygen.

Question 11

What are microaerophiles?

Answer 11

Only requires a small amount of oxygen. Doesn’t grow at normal atmospheric oxygen levels Hdoes have enzymes that will process toxic oxygen by products

Question 12

What are strict or obligate aerobes?

Answer 12

This doesn’t use oxygen in its metabolism.it will die with oxygen because it doesn’t have theenzymes required to process toxic oxygen byproducts.

Question 13

What are aerotolarent anaerobes?

Answer 13

Doesn’t use oxygen in its metabolism, but it does have the . enzymes to process toxic oxygen byproducts

Question 14

Osmophiles?

Answer 14

Live in habitats with a high solute concentration

Question 15

Xerophiles

Answer 15

Lives in very dry environments

Question 16

Halophiles

Answer 16

Lives in habitats with high salt concentration

Question 17

Halotolerant

Answer 17

Can grow in high salt concentrations, but it isn’t optimum

Question 18

What do cells do to survive in a hypertonic environment

Answer 18

Cells pump solutes that are outside of the cell into themselves to make a more isotonic environment.

Question 19

What do cells do to survive in a hypotonic environment

Answer 19

Their cell walls protect themfrom bursting and amoeba moves excess water out of the cell.