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djyliett [7]
3 years ago
7

In which mitotic phase are the sister chromatids separated and pulled to opposite poles? see section 12.2 ( page 258) . in which

mitotic phase are the sister chromatids separated and pulled to opposite poles? see section 12.2 ( page 258) . anaphase metaphase telophase prophase?
Biology
1 answer:
Brrunno [24]3 years ago
8 0
During anaphase, sister chromatids are pulled to opposite poles by the spindle fibers in preparation for cleavage. 
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Record your data from each trial in the data chart below:
Galina-37 [17]

Limiting factors are the biotic and abiotic environmental elements that model a species  population size affecting their carrying capacity. 1) alligators and mosquitoes 2) pollution 3) alligators 4) pollution 5) frogs are control species 6) + alligators, - frogs // + mosquitoes, + frogs.

<h3>What is a limiting factor? </h3>

Limiting factors are all the environmental elements, biotic and abiotic, that act directly on populations and individuals, limiting their distribution and growth.

These factors affect the carrying capacity, influencing on natality and mortality rate, migration, etcetera.

In the exposed example, limiting factors are

  • Alligators (predator)
  • Pollution
  • Mosquitoes (food)

These three elements model the Frog population size according to their magnitude and population sizes.

Two simulations per factor were performed in order to see how much each factor affected the frog's populations.

The <u>data chart</u> shows the following tendency,

<u>Alligators</u>

- Low number of alligators →  there was an increase in frogs number from  

                                                10 to 18.

- High number of alligators →  there was a decrease in frogs number from  

                                                 10 to 3.

<u>Pollution</u>

- Low pollution level →  there was no change in frogs number

- High pollution level →  there was a decrease in frogs number from  

                                        10 to 7.

<u>Mosquitoes</u>

- Low number of mosquitoes →  there was a decrease in frogs number

                                                     from 10 to 5.

- High number of mosquitoes → there was an increase in frogs number  

                                                      from 10 to 17.

Information from the graph expresses thesame tendency,

<u>Alligators</u>

- Low number of alligators →  there was an increase from 50k to 90k.

- High number of alligators →  there was a decrease from 50k to 10k.

<u>Pollution</u>

- Low pollution level →  there was no change

- High pollution level →  there was a decrease from 50k to 35k.

<u>Mosquitoes</u>

- Low number of mosquitoes →  there was a decrease from 50k to 25k.

- High number of mosquitoes → there was an increase from 50k to 85k.

1. Which limiting factor(s) in this lab simulation are biotic?

Alligator (predator) and mosquitoes (food)

2. Which limiting factor(s) in this lab simulation are abiotic?

Pollution

3. Which limiting factor impacted the cricket frog population the most? Use evidence to support your answer.

According to the chart and to the graph, the presence/absence of predators impacted the most on the frogs population.

4. Which limiting factor impacted the cricket frog population the least? Use evidence to support your answer.

Pollution is the factor that least affected the frogs population size.

5. Mosquitoes can carry and transmit disease to animals and humans. Explain how the cricket frog plays an important role in limiting the spread of mosquito-borne illnesses like West Nile virus and malaria.

Since frogs feed on mosquitoes, they become a natural control species for the mosquitoes, limiting their spread and effects on humans and animals.

Frogs are a biotic limiting factor for moesquitoes population.

6. Predict the long-term effects of these limiting factors on the cricket frog population in the pond ecosystem.

It depends on the pond ecosystem.

  • If there are too many alligators, frogs population will decrease. This decrease will probably affect alligator population size (assuming no other source of food for this last species), and only when predator population size decreases, frogs population will increase again.

  • If there are too many mosquitoes, frogs population will increase, which will cause a decrease in mosquitoes population. Less mosquitoes will drive to less frogs. The decrease in the number of frogs will increase the number of mosquitoes again.

↑ alligators and ↑ mosquitoes ⇒ ↓ frogs

↓ alligators and ↑ mosquitoes ⇒s ↑ frogs

↑ alligators and ↑ mosquitoes ⇒↓frogs

↓ alligators and ↓ mosquitoes ⇒ ↓frogs

You can learn more about limiting factors at

brainly.com/question/1375274

brainly.com/question/11165311

#SPJ1

Download pdf
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1 year ago
Emma believes it is important to consider the influence of our brain, genes, thoughts, feelings, family, and culture on our beha
Pavel [41]

Answer:

Answer is Biopsychosocial perspective.

Explanation:

The biopsychosocial model is a method of adopting the biological factor[ e.g brain], psychological factor [ emotions or behaviors], and sociological factor [culture or family], which are affecting individual to find out how and why disorders occur.

This method of using biopsychosocial model is known as the biopsychosocial perspective.

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3 years ago
A/an _____ is an injury to a joint such as the ankle, knee, or wrist.​
777dan777 [17]
I think its strain or sprained
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2 years ago
Which of the following is true of coral? a. It is located in deep sea regions. b. It supports few species. c. It is composed of
Leokris [45]

The answer is D. Coral reefs are built from stony corals, which in turn consist of polyps that cluster in groups. The polyps belong to a group of animals known as Cnidaria, which also includes sea anemones and jellyfish. Unlike sea anemones, corals secrete hard carbonate exoskeletons which support and protect the coral polyps. Most reefs grow best in warm, shallow, clear, sunny and agitated water. @wiki Hope this helps and if your feeling generous give it a rate, thanks and brainliest because it would really help me get virtuoso and I would appreciate it ;)

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3 years ago
Read 2 more answers
Why is osmosis important to the survival cell​
Rudiy27

The most important function of osmosis is stabilising the internal environment of an organism by keeping the water and intercellular fluids levels balanced. In all living organisms, nutrients and minerals make their way to the cells because of osmosis. This obviously is essential to the survival of a cell.

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