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
ahrayia [7]
2 years ago
7

There are so many microbes in a single mL of culture, it is very difficult to perform one dilution to produce countable cells. M

icrobiologists need to perform a dilution series, where multiple dilutions are performed in sequence to arrive at the correct dilution. Dilutions are cumulative. Multiply the series of dilutions together to find the final dilution value. If 6 serial dilutions are performed, each with a dilution of 0.1, what is the cumulative dilution
Biology
1 answer:
Feliz [49]2 years ago
4 0

Answer:

cumulative dilution = 0.000001

Explanation:

A serial dilution is a stepwise kind of dilution repeated a certain number of times, in which the concentration reduces exponentially each time.

The cumulative dilution is the final dilution gotten depending on the number of times dilution has been done and the dilution factor. The formula is given as:

Cumulative dilution = (F)ⁿ

where:

F = dilution factor = 0.1

n = number of serial dilutions = 6

∴ cumulative dilution = (0.1)⁶ = 0.000001

You might be interested in
Desert rabbits are adapted to the warm climate because their large ears aid in the removal of heat due to the
Nady [450]
<span>Desert rabbits are adapted to the warm climate because their large ears aid in the removal of heat due to the high heat of vaporization of water.
The rabbits that live in the desert are jackrabbits. An extensive network of blood vessels is present in the large ears of jack rabbits, due to this their large ears are used in cooling and radiating heat.</span>
8 0
3 years ago
How does the urinary system control the water in the body
lyudmila [28]

Answer:

The kidneys can regulate water levels in the body; they conserve water if youare dehydrated, and they can makeurine more dilute to expel excesswater if necessary. Water is lost through the skin through evaporation from the skin surface without overt sweating and from air expelled from the lungs.

4 0
3 years ago
Read 2 more answers
How are things transported through the membrane
AlladinOne [14]

Answer:

The mechanisms of transport across the cell membrane are as follow: 1- simple diffusion, 2- facilitated diffusion, 3- primary active transport and 4-secondary active transport

Explanation:

The cell membrane is a selectively permeable structure capable of transporting substances by different mechanisms. Simple diffusion is a type of passive transport (i.e. does not require energy) where non-polar molecules (e.g. O2, CO2) pass across the membrane by a process that does not require energy from the cell. Facilitated diffusion is another type of passive transport where larger polar molecules (e.g., glucose and amino acids) pass across the membrane by using specific transmembrane integral proteins. On the other hand, primary active transport is a type of active transport that uses chemical energy (e.g., ATP) to move substances such as metal ions (Na+, K+, Ca2+) across the cell membrane against their concentration gradient. Finally, secondary active transport is another type of active transport where transporter proteins are used to couple the movement of ions (e.g., H+ protons) down their electrochemical gradient to the transport of another ions/solutes against their concentration/ electrochemical gradient.

6 0
3 years ago
If we had a Gold necklace, and we melted it down and reshaped it to a gold coin
LuckyWell [14K]

Answer:

D

Explanation:

D) Volume mass and density

volume mass and density do not change because when the necklace is melted down it doesn't change the amount or density of the necklace.

3 0
3 years ago
Which of the following is a node that you would expect to find on the cladogram for animals?
spayn [35]

Answer:

B - Deuterostome development

7 0
2 years ago
Read 2 more answers
Other questions:
  • If George is startled by a loud noise immediately after his baby sister cries, he is likely to become fearful every time she cri
    9·2 answers
  • Question 1 (1 point)
    12·1 answer
  • How does chromatid cohesion differ in mitosis and meiosis? how does chromatid cohesion differ in mitosis and meiosis?
    15·1 answer
  • In the united states, the most at risk and highest reported rates of infection of gonorrhea are among sexually active ________.
    6·1 answer
  • If an individual inherits two of the same alleles, either both recessive or both dominant for a particular trait, the inherited
    9·1 answer
  • ANSWER QUICK Which is a biotic factor? A. rotting carcass b. rock c. drop of water d. fire
    14·1 answer
  • Guys please help me !!
    13·1 answer
  • Small, nonpolar molecules, like ____________ , pass directly through the phospholipid bilayer. Charged particles, like _________
    6·1 answer
  • 1. Blood in the gills runs in the opposite direction as the water outside the gill filaments. By running in the direction opposi
    5·1 answer
  • Based on your understanding of nucleic acids, what type of bonds form between the CRISPR/guide RNA molecule and the target DNA
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!