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Lapatulllka [165]
3 years ago
7

The biggest difference between elements and molecules is that elements only have one TYPE of atom, while molecules have MULTIPLE

types of atoms. True or False​
Biology
1 answer:
Tpy6a [65]3 years ago
5 0

Answer:

the answer is true

Explanation:

el3m3nt is pure substance and is only made up of one type of atom it cabt be broken down into simpler substance

molecules form when two or more atoms form chemical bonds with eachother

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Which piece of evidence from the passage supports the theory that humans may not have been responsible for the extinction of the
Anarel [89]
The answer is A I think
7 0
4 years ago
If you suspect your culture of bacteria has 23 x 106 cells per mL, what would you want the final dilution to be in order to end
olya-2409 [2.1K]

The dilution factor in order to end up with 96 colonies of bacteria is 0.23 × 10^6 .

For calculating the colony forming unit bacteria;

Colony-forming unit (CFU or cfu) is a measurement of live bacterial or fungi cells and is used to calculate the colony-forming unit of bacteria. CFU counts only viable cells as opposed to direct microscopic counts, which count all cells, both living and dead, using a hemocytometer. Colony-forming units per milliliter (CFU/mL) for liquids and colony-forming units per gram (CFU/g) for solids are used to indicate the results for convenience. The miles and Misra method can be used to compute CFU, which is helpful for assessing the microbiological load and severity of illness in blood and other samples.

∴ cfu/ml = (no. of colonies x dilution factor) / volume of culture plate

  23 x 10^6 cells per mL          =  96 × dilution factor

  Dilution factor  = 23 ×10^6 / 96

  Dilution factor  = 0.23 × 10^6

Therefore, the dilution factor in order to end up with 96 colonies of bacteria is 0.23 × 10^6 .

Learn more about bacteria here:

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6 0
2 years ago
What do cellular respiration and fermentation have in common? They both occur in the mitochondria, they both Harvest energy from
Slav-nsk [51]

Answer:

Fermentation and cellular respiration are alike in that they both begin with a series or reactions known as glycolysis, which breaks glucose molecules into smaller pyruvate molecules. They are also similar in that during both processes ATP is produced for the cell to use.

Hope it helps.

5 0
4 years ago
Read 2 more answers
What is diffussion ?<br>Defines osmosis?<br>what is hypotonic solution?​
frozen [14]

Answer:

Diffusion is the net movement of anything from a region of higher concentration to a region of lower concentration. Diffusion is driven by a gradient in concentration. The concept of diffusion is widely used in many fields, including physics, chemistry, biology, sociology, economics, and finance.

Dictionary

Definitions from Oxford Languages

Search for a word

osmosis

/ɒzˈməʊsɪs/

Learn to pronounce

noun

1.

BIOLOGY•CHEMISTRY

a process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one.

2.

the process of gradual or unconscious assimilation of ideas, knowledge, etc.

A hypotonic solution has a lower concentration of solutes than another solution. In biology, a solution outside of a cell is called hypotonic if it has a lower concentration of solutes relative to the cytosol. Due to osmotic pressure, water diffuses into the cell, and the cell often appears turgid, or bloated.

6 0
3 years ago
Which organelle is used as temporary storage for water, waste products, food, and other cellular material?
Fittoniya [83]

A vacuole

is responsible for temporary storage for water, waste products, food, and other cellular material.


Explanation:

Vacuoles are storage bubbles found in cells. They are found in each animal and plant cells however are a lot of larger in plant cells. Vacuoles may store food or any form of nutrients a cell may got to survive. they'll even store waste merchandise that the remainder of the cell is shielded from contamination.

8 0
4 years ago
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