1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Lera25 [3.4K]
3 years ago
5

When bacteria are inoculated into a new sterile nutrient broth, their numbers don’t begin to increase immediately. Instead, ther

e is a lag phase that may last for an hour or even several days. Why don’t bacterial numbers increase immediately?
A. The medium contains inhibitors that prohibit rapid growth of the bacteria, and these must be inactivated before bacterial numbers will increase.
B. The bacteria must adjust to the nutrient content in the new medium, synthesizing necessary amino acids, growth factors, and enzymes.
C. There are not enough nutrients for the bacteria to grow, and growth is delayed until there are some dead cells to cannibalize.
D. The bacteria have to establish a biofilm before their numbers can increase.
Biology
2 answers:
Natalka [10]3 years ago
8 0

Answer: B. The bacteria must adjust to the nutrient content in the new medium, synthesizing necessary amino acids, growth factors, and enzymes.

Explanation: The lag phase is a time for adjustement to new environments, in this case new mediums. In that phase, bacteria sense the available nutrients to synthesize those required and grow as preparing for division, metabolizing to produce energy, making proteins, fatty acids, etc.

nataly862011 [7]3 years ago
6 0

Answer: Option B is the correct answer.

Explanation:

When bacteria is introduced into a medium it first has to adapt and secrete the necessary growth factors and enzymes that will aid in the digestion of nutrients found in this new medium. After lag phase follows exponential growth where bacteria grows at a rapid rate till it reaches a stationary phase due to nutrient depletion.

You might be interested in
Describe how cooperativity of oxygen binding in hemoglobin is advantageous for the transport of oxygen from the lungs to the tis
Nostrana [21]
The affinity of hemoglobin for oxygen is less than its structural analog myoglobin. However, this does not affect hemoglobin's usefulness for the body; on the contrary, it allows hemoglobin to be a  more efficient carrier than myoglobin. This is because hemoglobin can release oxygen more easily than can myoglobin. It is both important for oxygen to be carried to different areas and also to be released when needed. The higher affinity of a given protein for oxygen, the harder it will be for that protein to release oxygen when needed. Therefore, hemoglobin's lower affinity for oxygen serves it well because it allows hemoglobin to release oxygen more easily in the body. 
3 0
3 years ago
Developing countries tend to have more people in urban areas than rural areas.<br> True or False?
MA_775_DIABLO [31]
This statement is true. Developing countries indeed tend to have more people in urban areas than rural areas. For example, New York City has the massive population in the state of New York, compared to its rural areas upstate. 
6 0
3 years ago
Read 2 more answers
Speciation is found on the principle of genetic mutations and
Julli [10]
Speciation is founded on the principle of genetic mutations and
<span>
speculated genetic possibilities</span>
7 0
3 years ago
Read 2 more answers
HI GUYS VRY BORING. ANYONE ONLINE​
kiruha [24]

Answer:

hiii hru I want to talk with you

7 0
2 years ago
Read 2 more answers
List the 3parts of cell theory
GarryVolchara [31]

Answer:

1. All living things are composed of cells.

2. Cells are the basic units of structure and function for living things.

3. All cells come from pre-existing cells. Also, organisms grow by “adding on more cells” NOT by increasing the size of their cells.

Explanation:

8 0
2 years ago
Read 2 more answers
Other questions:
  • When glycogen phosphorylase is phosphorylated Group of answer choices its activity decreases. its activity increases. its activi
    11·1 answer
  • a patient is found to be suffering from a bacterial infection. which genetically engineered medicine is most likely to be used t
    15·2 answers
  • How does upwelling affect the weather of a coastal region?
    5·1 answer
  • Which of the following describes a drug target?
    10·1 answer
  • What are the functions of the proteins that mRNA helps to produce?
    13·1 answer
  • A zygospore is the product of sexual reproduction. <br>True or False ?
    8·1 answer
  • Why is dna referred to as your genetic fingerprint??
    8·1 answer
  • Proteins are made in organelles called _____.
    11·1 answer
  • access the capabilities of animal and plant cell types owing the presence or absence of chloroplast and cell wall
    10·1 answer
  • Which property of matter does the instrument measure?​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!