Lesson 5

Question 1

Sum of all chemical processes that take place in a living organism and results in its growth, energy generation, waste disposal, and other functions in relation to cell nutrient
distribution.

Answer 1

Metabolism

Question 2

Synthesis of complex molecules and energy production

Answer 2

Anabolism

Question 3

Large complex molecules are broken down into simpler, smaller molecules accompanied by
energy utilization

Answer 3

Catabolism

Question 4

What are the 2 general processes used to produce energy?

Answer 4

1. Respiration
2. Fermentation

Question 5

Efficient ATP-generating process in which molecules are oxidized, resulting in an inorganic molecule as the final electron acceptor

Answer 5

Respiration

Question 6

– Does not require Oxygen (Anaerobic), Kreb’s cycle, or an electron transport chain
– Release energy from sugars or other organic molecules (Amino Acids, Purines)
– Forms a mixture of end products (Lactate, Butyrate, Ethanol, Acetoin)

Answer 6

Fermentation

Question 7

– Is an organism that require oxygen and grow well in room air.
– Air contains 15-21% oxygen and 1% CO2

Answer 7

Aerobe

Question 8

Organism that requires 2-10% oxygen for growth.

Answer 8

Microaerophile

Question 9

Require 5-10%
CO2 (Hemophilus influenzae,
Neisseria gonorrheae and
Streptococcus pneumoniae)

Answer 9

Capnophiles

Question 10

This type of bacteria require additional substances for growth and survival.

Answer 10

Fastidious

Question 11

Is the optimum temperature for most bacteria

Answer 11

35°C-37°C

Question 12

Is the lowest/minimum time required to kill organisms in a constant temperature.

Answer 12

Thermal Death Time

Question 13

Is the lowest temperature required to kill organisms in a constant time

Answer 13

Thermal Death Point

Question 14

Optimum pH for most pathogenic
bacteria is?

Answer 14

6.5 - 7.5 pH

Question 15

Important for bacterial growth

Answer 15

Moisture requirement

Question 16

Requires increased concentration of
sodium chloride

Answer 16

Halophiles

Question 17

Halophed

Answer 17

organisms that grow rapidly in the presence of high pressure 600 to 1100 atmospheric pressure

Question 18

Measure of the growth rate of an organism

Answer 18

Length of Generation Time

Question 19

Is the period wherein there is no cell division; no abrupt increase in cell number

Answer 19

Lag Phase

Question 20

It is the period wherein microorganisms are
actively growing and dividing; bacterial
numbers increased logarithmically - cellular production is most active during this period

Answer 20

Log/Exponential Phase

Question 21

It is the period wherein there is a balance between cell division and dying organisms - the number of viable microorganisms remains constant

Answer 21

Stationary/Plateau Phase

Question 22

It is the period wherein there is cessation of bacterial growth - the number of cell death exceeds the number of living microorganisms

Answer 22

Death/Decline Phase

Question 23

The doubling of cell number

Answer 23

Generation

Question 24

Is the time required for a bacteria to double its population

Answer 24

Generation/Doubling Time