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Dmitry [639]
3 years ago
7

What is the difference between pure culture and contamination?

Biology
1 answer:
balandron [24]3 years ago
4 0

In simple words, a particular bacterial culture that is contaminated indicates the presence of other types of bacteria in that culture. In contrast, mixed culture indicates a culture or medium where two or more than two types of bacteria with different strains and species are present.

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Use the periodic table to find the numbers of protons neutrons and electrons for atoms of the following elements
katovenus [111]

Explanation:

The periodic table lists elements based on their atomic numbers. It is made up of 7 periods and about 18 groups.

Atomic number is number of protons in an atom. It is on the basis of this that the period law is expressed.

The law states that "the properties of elements are a periodic function of their atomic number".

 An atom on the periodic table is designated as:

                                   ⁸ₙK

 K is the symbol of the atom

 n is the atomic number

 a is the mass number

For every atom on the periodic table, they are electrically neutral. This suggests that they have equal number of protons and electrons.

   Since n is the atomic number

The atomic number is the same as the number of protons in an atom. This is also the number of neutrons.

 To find the number of neutrons:

  Number of neutrons = mass number - atomic number

learn more:

Periodic table brainly.com/question/8543126

#learnwithBrainly

5 0
3 years ago
Amber ate a meal high in fat. Initially, after digestion and absorption, the different types of fat will be packaged into ______
Novosadov [1.4K]

Answer: Lipoproteins; site of utilization

Amber ate a meal high in fat. Initially, after digestion and absorption, the different types of fat will be packaged into lipoproteins and carried to the site of utilization

Explanation:

Lipoproteins are proteins that formed complex with lipids (fats). After a meal rich in fats, they help to transfer lipids from the site of absorption of the site of utilization. Based on the their density, lipoproteins are classified as:

- very low density lipoproteins (VLDLs) which transports triglycerides

- low density lipoproteins (LDLs) which transports several kinds of fats

- high density lipoproteins (HDLs) which transports cholesterol

- very high density lipoproteins (VHDLs) which transports phospholipids

5 0
3 years ago
Heterotrophic eukaryotes that digest their food externally and absorb the small molecules are referred to as
Andreyy89

Answer:

I believe the answer is Fungi

Explanation:

3 0
4 years ago
2. Why should you never use the coarse adjustment knob on high power?
KIM [24]

The coarse adjustment knob is used for large adjustments when focusing a microscope by the time ur at the high power ojective lens its lens would be close to the stage and using the course adjustment knob can cause the lens to  crack or brake the slide


3 0
3 years ago
I need help with a problem ​
Usimov [2.4K]
A Answer Tge question
8 0
3 years ago
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