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
Alinara [238K]
3 years ago
12

During streak plate technique: Why is it necessary to flame the loop in between streaks?A. To grab bacteria from previous streak

ed area going into new streaked areaB. In order to count colonies from streaked areas based on previous areasC. To reduce number of bacteria from previous streaked area going into new streaked areaD. to kill bacteria and avoid contamination
Biology
2 answers:
Alex Ar [27]3 years ago
8 0

Answer: Option C

Explanation:

In case of streaking, the loop is flame in between streaks. This is done in order to prevent the number of bacteria from entry into the new area of the streak.

The bacterial population is taken from the loop and is streaked on the petri dish containing the nutrient medium.

This loop is flamed and then again used for streaking the another bacterial species. So, no two bacterial species should be mixed with each other do it is flamed in between the intervals of streaking.

slavikrds [6]3 years ago
7 0

Answer:

Option C, To reduce number of bacteria from previous streaked area going into new streaked area

Explanation:

A loop is sterilized by flaming the loop in between streaks. A streak plate method is used to isolate discrete bacterial colonies so that the number of organisms in the inoculums is reduced. During the procedure, microorganism get deposited in the initial region. This would cause growth of culture across the streaked area and hence the loop is sterilized.

In order to sterilize the loop, it is kept between the blue flame of the Bunsen burner after every section so that the number of depositing microorganism reduces.

Hence, option C is correct

You might be interested in
The longest vein in the body is the
vagabundo [1.1K]

Answer: d. Great Saphenous Vein

Explanation:

The great saphenous vein is the major vein of the medial leg and thigh. It extends from the top of the foot to the upper thigh and groin.

(pls mark me the brainliest)

7 0
3 years ago
Read 2 more answers
why Repeat your investigation 3 times? Why is it important to repeat the steps of data collection in biology?
Xelga [282]

Answer:

to get a Repeating answer so you know the first time wasn't a fluke

Explanation:

7 0
3 years ago
DDT is a pesticide that has been used worldwide over the past 50 years. DDT is used to prevent insects from destroying crops and
olga2289 [7]

Answer:

I think B or C but mainly C

Explanation:

6 0
3 years ago
Which of these describes one way the nervous system and the circulatory system interact to maintain homeostasis?
NeTakaya

Answer:

Mañana tengo escuela y son las 3 de la mañana

Explanation:

weno me esperas 29 minutos para poder traducir lo que dice ahí? es que no entendí.

3 0
3 years ago
What cellular material is solely composed of DNA and proteins?
lukranit [14]
Chromosomes are made up of DNA and molecules are packed around proteins called Histones
5 0
3 years ago
Other questions:
  • Draw a sketch of your replicating molecule. Make sure you label all of the important parts.
    8·1 answer
  • The earth’s early atmosphere did not contain oxygen. This changed dramatically once the early cells underwent photosynthesis. Ex
    10·1 answer
  • To cells that are defective in primer removal, you add fluorescent ribonucleotides when the cells are undergoing dna replication
    15·1 answer
  • What is carbon needed for in living things?
    11·1 answer
  • Plz help me! <br> I have the problem upload as an attachment down below↓.
    13·1 answer
  • Which of the following statements is true? (4 points)
    10·1 answer
  • How do proteins travel from the endoplasmic reticulum to the Golgi apparatus ?
    10·2 answers
  • On a coral reef in the Florida keys, a population of damselfish has two color variation: brown and pink. These fish seek habitat
    9·1 answer
  • The most abundant cells of the epidermis are called:.
    8·1 answer
  • Explain why the metric system and si are important​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!