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irina [24]
2 years ago
13

Which of the following is a concern if you forgot to resuspend (mix) culture solutions when performing serial dilution?

Biology
1 answer:
Illusion [34]2 years ago
3 0

Answer:

B) CFU/mL calculations would not be accurate

Explanation:

In microbiology CFU is the acronym for Colony Forming Unit, which indicates the number of bacteria or fungi capable of multiplying under suitable conditions. In this case, CFU/mL indicates how much bacterial or fungal cells, susceptible to reproduction, exist within 1 mL of a culture solution.

When this solution is used, to make a dilution or other laboratory activity, it is important that it be resuspended, that is, mixed, as the bacteria or fungus cells can accumulate in the bottom or surface of the substance, changing the value of CFU/mL and causing inaccurate dilutions if used. When resuspended, the substance presents the appropriate value of CFU/mL, ensuring that the dilution is accurate and effective.

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These are all hypothalamic hormones except
Paul [167]

Answer:

The correct answer is luteinizing hormone.

Explanation:

Hypothalamus has two sets of nerve cells that produce hormones. One set sends the hormones that are anti-diuretic hormone and oxytocin. ADH regulates or water in the bloodstream by reabsorption of water at the kidney and oxytocin helps in pregnancy and breastfeeding.

The other set produces hormones growth regulating, stress releasing and stimulating and inhibiting hormones are dopamine, corticotrophin-releasing hormone, growth hormone-releasing hormone, gonadotropin-releasing hormone, somatostatin, and thyrotropin-releasing hormone.

Luteinizing hormone is secreted by the pituitary gland. It is one of the main hormones that control the reproductive system.

Thus, the correct answer is luteinizing hormone.

4 0
2 years ago
What happens in prophase.
Reptile [31]
During prophase, the parent cell chromosomes — which were duplicated during S phase — condense and become thousands of times more compact than they were during interphase. ... Cohesin forms rings that hold the sister chromatids together, whereas condensin forms rings that coil the chromosomes into highly compact forms.
4 0
2 years ago
3. The island of Rum in Scotland had wolves and trees 500 years ago. It now has neither. A. Offer one hypothesis for the current
pychu [463]

To test for the keystone species hypothesis, the wolves in another region can be removed or trees can be reintroduced to see the effect on the ecosystem.

<h3>What is a keystone species?</h3>

A keystone species is an organism whose existence defines an entire ecosystem such that them, the ecosystem would be severely affected or may not exist.

Trophic cascades are events which result in serious distortions in an ecosystem as a result of the removal or addition of a top predator.

To test for the hypothesis of keystone species and trophic cascades, the wolves in another region can be removed or trees can be reintroduced to see the effect on the ecosystem.

Learn more about keystone species at: brainly.com/question/2044051

#SPJ1

3 0
1 year ago
How does anaphase 1 in meiosis differ from anaphase in mitosis
slega [8]

Answer:

The differecnce is in the amount of DNA present and what type. In meiosis you have a diffrent amount of DNA than mitosis and the DNA in meisosis has done crossing over aand is different than the original. Mitosis is exactly the same

Explanation:

3 0
2 years ago
Why were wolves introduced to Coronation Island?
Black_prince [1.1K]

Answer:

Wolves can also increase tourism.... Wolves were introduced for habitat conservation at Coronation Island, Alaska in 1960, and there they successfully managed deer before the wolf population expanded and then crashed.

5 0
2 years ago
Read 2 more answers
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