Why was the 1mL of experimental culture medium that was removed each day replaced by 1mL of sterile culture medium?

Answers

Answer 1

Answer:

A sample of a specific species of microorganism was added to 100 mL of a liquid culture medium. ... The 1 mL of experimental culture medium was replaced by 1 mL of new sterile culture medium to maintain a constant volume.


Related Questions

didn’t mean to type a question
ignore this

Answers

All good but thanks

select the most correct statement concerning skin cancer

Answers

Melanomas are rare to occur but must be removed quickly to prevent them from spreading.

Melanoma is also called "the most serious skin cancer disease" because it can spread very quickly. Melanoma can develop within a mole that is already present on our skin and appear suddenly as a dark spot on the skin that looks different from the remaining types of mole.

Early diagnosis and treatment of Melanoma type of cancer are of great importance so we can conclude that early treatment of Melanomas can prevent it from spreading.

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a very long note on what age human beings stop growing​

Answers

Answer:

did you mean

Explanation:

human beings stop growing at 35 age  i think

Briefly summarize the difference between Kinetic and Potential Energy

Answers

Potential energy is stationary , with stored energy to be released

kinetic energy is energy in motion (using energy for movement)


Kinetic energy can be transferred from one moving object to another, say, in collisions. Potential energy cannot be transferred. Flowing water, such as when falling from a waterfall. Water at the top of a waterfall, before the precipice.

how many inches does unpackaged food need to be stored above the ground

Answers

Answer:

6 inches

Explanation:

Unpackaged food should be stored at least 6 inches above the ground to protect it from contamination by pests, water, and cleaning chemicals

What are storage conditions for unpacked food?

Unpacked food should be stored under appropriate conditions to ensure its safety and quality. The storage conditions may vary depending on the type of food, but in general, food should be stored in a cool, dry, and well-ventilated area, away from direct sunlight, heat sources, and other contaminants.

Unpackaged food should be stored at least 6 inches above the ground to protect it from contamination by pests, water, and cleaning chemicals. This is a standard requirement in most food safety regulations and guidelines, including the FDA Food Code and the USDA Food Safety and Inspection Service (FSIS) guidelines

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what part of the microscope adjusts the amount of light?

Answers

Answer:

Iris diaphragm

A positive feedback loop is illustrated by all of the following except?
A. Compound interest in a savings account.
B. Exponential population growth.
C. A thermostat maintaining certain temperature in your house.
D. The greenhouse effect.

Answers

Answer:

Option A. Compound interest in a savings account.

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what is not an example of solid​

Answers

Gas, oil, fumes, water, sunlight.

1. State two diferences sexual reproduction and vegetable reproduction​

Answers

Answer:

Sexual reproduction involves the participation of two organisms where the two organisms will share each other's gametophyte or gamete. These gametes or gametophytes can fuse to form a fertilized zygote. On the other hand, in vegetative reproduction, only the vegetative parts of the plant give rise to new offspring.

Explanation:

Which mutation is harmful to the organism?

Answers

D.Mutation causing uncontrolled cell division

Explanation:

have a good day :)

answer is d lol
hv a good day

*100 points* *Giving brainiest*

Answers

Answer:

what do you have do in this question bro

Explanation:

I will help you do it

Answer:

Please elaborate and I can help you!

Explanation:

give the function of a Egg cell
please not a copy and paste answer ​

Answers

Answer:

helps in receiving the sperm cell which helps in fertilization

Explanation:

at which stage of the cell cycle could you see sister chromatids with a microscope?

Answers

Answer:

Metaphase

Explanation:

During metaphase, the chromosomes line up along the center axis of the cell, called the metaphase plate, and attach to the spindle fibers. Since the chromosomes have already duplicated, they are called sister chromatids.            

there you go

please help me asap it should go in 5mins​

Answers

Answer:

the type of seed planted

Explanation:

Which macromoleule stores energy in the muscles and in the liver for quick energy like running during gym?

Answers

Glycogen

complex carbohydrate that the body can easily and rapidly convert to energy. Glycogen is stored in the liver and the muscles

I NEED HELP!!!!
PLEASE READ THE QUEUSTION AND AWNSER IT'S A MULTI ANSWER.

Answers

Answer:

The direction of sunlight

The amount of resources they had access to

Explanation:

the answer is 3

Explanation:

sunflower go the direction the sun is

b. nuclear______occurs in star's
core that combines elements to make
BIGGER elements.

Answers

Answer:

nuclear fussion occurs in star's core that combines elements to make BIGGER elements.

Explanation:

Hope this helps :)

13. Small streams and rivers that flow into larger ones are called
a. resaca
b. tributaries
c. lakes
d. ponds

Answers

Answer:

B

Explanation:

lol

Answer:

B. tributaries

Explanation:

QUICK!! What is the job of mitochondria?


ANSWERS:

A to turn food into energy
B to get rid of waste
C control all the cells activities
D to turn food into meals

Answers

Answer:

A

Explanation:

Answer:

i would think A. but sorry if its not it and have a good day.

Which of the following does not illustrate a time delay?

1. A smoker develops lung cancer.
2. CFCs deplete ozone layer.
3. Increase carbon dioxide levels enhance greenhouse effect.
4. A fox eats a rabbit.

Answers

Answer:

option 3 increase carbon dioxide level enhance greenhouse effect

Explanation:

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identify the muscles as voluntary, involuntary or both!

Answers

Answer: The skeletal muscles are considered as the voluntary muscles

Explanation:

Answer:

Voluntary, Involuntary Involuntary

Explanation:

how did mitochondria and chloroplasts most likely arise?

Answers

They are from bacteria that were not digested. Mitochondria are thought to have arisen from aerobic bacteria, and chloroplasts from photosynthetic bacteria. This explains their double membrane and own chromosomes.

:)

What makes amino acids unique from one another?

a. the 'R' group
b. The amino group
c. The carboxyl group
d. The type of sugar molecule in the molecular backbone

Answers

Answer:

The type of sugar molecule in the molecular backbone

Species are identified as ?

Answers

Answer:

Groups

Explanation:

Answer:

plss mark me brainlest

Explanation:

species, in biology, classification comprising related organisms that share common characteristics and are capable of interbreeding. This biological species concept is widely used in biology and related fields of study.

The code for a DNA strand is CGTA. What is the complementary strand?

Answers

Explanation:

The complementary DNA strand of the sequence ATGC will be TACG. The complementary base pairing in DNA is as per the...

The DNA molecule is composed of two long complementary chains of nucleotides. The complementary DNA sequence of CGTA is GCAT.

The DNA molecule is composed of two antiparallel strands of nucleotides linked together by hydrogen bonds.

In DNA, there are four types of nucleotides, each containing one different nitrogenous base (i.e., Adenine, Guanine, Cytocine and Thymine).

In RNA, Thymine bases are replaced by Uracil bases.

According to the base pair rules, Adenine (A) always pairs with Thymine (T), whereas Cytosine (C) always pairs with Guanine (G).

In conclusion, the complementary DNA sequence of CGTA is GCAT.

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Know the difference between a molecular and structural formula

Answers

Answer:

With a molecular formula, it can specify the actual number of atoms of each element in a molecule. When writing the molecular formula, you have to write the symbols for all the elements that are contained within a molecule. A structural formula shows the structure of how atoms and molecules are built.

Brainliest please ASAP! The model of electrons orbiting around the nucleus like planets orbit the sun has been proven to be inaccurate. What’s a more accurate way to describe electron orbitals?

Answers

Answer:

Explanation:

An orbital is a three dimensional description of the most likely location of an electron around an atom. Below is a diagram that shows the probability of finding an electron around the nucleus of a hydrogen atom. ... 2) Orbitals are combined when bonds form between atoms in a molecule.

which part of the nervous system is most immediately activated by sudden fear?

Answers

Answer:

The Amygdala

Explanation:

The fear response starts in a region of the brain called the amygdala. This almond-shaped set of nuclei in the temporal lobe of the brain is dedicated to detecting the emotional salience of the stimuli – how much something stands out to us.

I used this site, if you would like to know more information please read it whenever you are free.

https://www.smithsonianmag.com/science-nature/what-happens-brain-feel-fear-180966992/

The Amygdala is part of the nervous system is most immediately activated by sudden fear.

What is nervous system?

Nervous system is defined as a well organised system found inside our body as it will  performs a very important function in the body. The main component of nervous system would be spinal cord as well as brain.

The nerves which are arranged in the form of branches that starts from the spinal cord and later distributed in all the parts of body uniformly. The location where the  brain as well as spinal cord are located is known as dorsal body cavity and these two parts of the body has play a vital role in the role of communication of all parts of the body.

The location where the  brain as well as spinal cord are located is known as dorsal body cavity and these two parts of the body has play a vital role in the role of communication of all parts of the body. The main component of nervous system would be spinal cord as well as brain.

Therefore, The Amygdala is part of the nervous system is most immediately activated by sudden fear.

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how are respiration and photosynthesis related to each other?

Answers

Answer:

Photosynthesis makes the glucose that is used in cellular respiration to make ATP. The glucose is then turned back into carbon dioxide, which is used in photosynthesis. ... While photosynthesis requires carbon dioxide and releases oxygen, cellular respiration requires oxygen and releases carbon dioxide.

Explanation:

Which of the following statements best describes the process of photosynthesis?
Chloroplasts absorb sunlight and store chemical energy.

Plants use oxygen to make simple sugars.

Chlorophyll builds sugars in the thylakoid membrane.

Light breaks down water molecules and releases carbon dioxide.

Answers

Answer:

Chloroplast absorbs sunlight and store chemical energy

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