Bacterial growth curves typically can be divided into four distinct phases: lag phase, log phase, stationary phase, and death phase. drag the following descriptions to the appropriate location on the bacterial growth curve.
1- log of the number of bacteria
2- period of most rapid growth. number of bacteria is increasing exponentially
3- bacteria are metabolically very active, but the numbers are not increasing.
4- population growth has halted. number of new cells formed balances the number of cells dying.
5- time
6- rate of the cells death exceeds the rate at which new cells are being formed. number of cells decline exponentially.

lag phase

Bacteria are metabolically very active, but the numbers are not increasing

log phase

Period of most rapid growth. Number of bacteria is increasing exponentially

stationary phase

Population growth has halted. Number of new cells formed balances the number of cells dying.

death phase

Rate of the cells death exceeds the rate at which new cells are being formed. Number of cells decline exponentially.

Explanation:

There are four distinct phases in the bacterial growth curve -

a) lag phase - In this phase cellular activities takes place but the cell do not grow. Also the size of  cells grow but no cell division happens

b) log phase -   In this phase the cell starts dividing by the process of binary fission and start doubling themselves in numbers. Metabolic activity is at a high pace for preparing the cell for DNA replication.

c) stationary phase - After the full growth the population starts declining due to diminishing nutrients and accumulating waste products.

d) death phase - At this stage the quantity of waste becomes higher than the nutrients and thus the cell starts dying more and more.

lag phase

Bacteria are metabolically very active, but the numbers are not increasing

log phase

Period of most rapid growth. Number of bacteria is increasing exponentially

stationary phase

Population growth has halted. Number of new cells formed balances the number of cells dying.

death phase

Rate of the cells death exceeds the rate at which new cells are being formed. Number of cells decline exponentially.

image result for describe the various types of gene mutationsghr.nlm.nih.gov

the types of mutations include: missense mutation: this type of mutation is a change in one dna base pair that results in the substitution of one amino acid for another in the protein made by a gene. nonsense mutation: a nonsense mutation is also a change in one dna base pair.

explanation: