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Stells [14]
3 years ago
14

Signals from the ___ system cause contractions in skeletal muscles. A. Respiratory B. Endocrine. C. Nervous. D. Digestive

Biology
1 answer:
Andru [333]3 years ago
3 0
Answer: C) Nervous Sytem
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The best method to isolate single colonies is the ___________ plate, and the best method to count colonies is the ___________ pl
OverLord2011 [107]

Answer:

option a. streak, pour

Explanation:

The best method to isolate single bacterial colonies is the "streak-plating" method.

The "streak-plate" procedure is used to isolate pure cultures of bacteria or also colonies, from mixed populations by mechanical separation. Millions of cells form a colony, they grow in a cluster on an agar plate. With this method, a mixture of cells is spread over the surface of a agar-based nutrient in a petri dish, that makes that less bacterial cells are deposited at widely separated point on the surface and, after incubation, they develop into colonies.

On the other hand, the best method to count colonies is the pour plate method. It helps to enumerate bacterial cells in a mixed sample, often used to count the number of microorganisms in those samples, which are added to a molten agar medium before its solidification occur. The result is colonies uniformly distributed throughout the solid medium when the appropriate sample dilution is plated.

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3 years ago
Explain why high penetrance for a trait is an important criterion for including a disease in a genetic diagnosis test
Svetradugi [14.3K]
If penetrance is high, it is more likely that the phenotype of the disease will be exhibited if the genotype is present.
Hope I helped!
5 0
3 years ago
The cell cycle
tankabanditka [31]

Answer:The cell cycle a. includes mitosis as an event.

Explanation:

The cell cycle consists of two stages:

interface and phase M (mitosis). In the first, the cell grows and doubles its DNA; It consists of phases G1, G2 and S. In phase M, the cell divides its already duplicated DNA and the cytoplasm divides into 2 (cytokinesis), forming 2 daughter cells. There is a G ° phase, where the cell is in a "vegetative" state, called "senescence." The cell cycle is regulated cyclin / CDK complexes, tumor suppressor genes (example: p53).

5 0
3 years ago
Are there any disadvantages to an individual with the peppered moth?
Anuta_ua [19.1K]
There are no disadvantages to an individual with the peppered moth.<span />
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3 years ago
Help me on number 9 please!
jasenka [17]

Answer:

D

Explanation:

I believe its D because we cross out the first 2 options because the question is asking about the dark line which is the pups and not the adults. if we look D and the lowest point of dark line, we can say its talking about <u>few</u> and 1995 talking about <u>many. </u>

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3 years ago
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