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balandron [24]
3 years ago
15

How many factors should a well-designed experiment test at one time?

Biology
1 answer:
LuckyWell [14K]3 years ago
3 0
Only 1- the experiment can not show a cause and effect relationship if there are more than one factors contributing to the outcome.
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Which of the following is an organism whose cells each contain a membrane<br> bound nucleus?
DerKrebs [107]

Answer:

D. Eukaryote

Explanation:

An organism that has membrane-bound organelles will have more complex organelles like mitochondria, Golgi apparatus, and ER. These are known as Eukaryotes. Additionally, they will have a nucleus that has the DNA coiled inside. Prokaryotes do not have membrane-bound organelle and the DNA floats in the cytoplasm. Most plants and animals are eukaryotes and all multicellular organisms are too.

3 0
3 years ago
Which of the following would change the allele frequencies of a
Readme [11.4K]
C is the correct answer
4 0
3 years ago
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Describe how an organisms niche is different than its habitat
Snowcat [4.5K]
A habitat defines the interaction of organisms with the other factors, which can be living or non-living, while niche describes how that specific organism is linked with its physical and biological environment. Habitat is the part of the ecosystem, while niche plays an important role in the formation of an ecosystem.
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3 years ago
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The blue people of Troublesome Creek Kentucky were genetically isolated from the rest of the world for generations. A rare reces
Serhud [2]

Answer:

The correct answer would be - d. With the end of genetic isolation gene flow took place

Explanation:

It is given that people of Troublesome Creek Kentucky were isolated and have a rare recessive allele that results in a blue tone to their skin. However, later these isolated people connected with the people from outside, and due which allow them to intermate. Intermating among populations from isolated and people from outside leads to gene flow.

Methemoglobinemia was present in the isolated population as they had both recessive alleles in their genotype and other hand people from outside might have heterozygous or both dominant allele genotypes that make them free from this disorder.

Due to the intermating and gene flow, the number of heterozygous conditions rises and after many generations slowly methemoglobinemia could have disappeared due to the masked recessive allele.

4 0
3 years ago
Construct an argument about how the physical and biological components in the Chesapeake Bay ecosystem affect the crab populatio
Tamiku [17]

To make an argument about how environmental imbalance affects the ecosystem of the Chesapeake Bay, research on reliable sources on the topic is necessary.

<h3 /><h3>How is the Chesapeake Bay?</h3>

The bay corresponds to the largest ecosystem of estuaries in the USA, being a source of diverse types of habitat for wildlife, with more than 3,600 species of animals and plants.

An example of the environmental imbalance in the area is the commercial and recreational fishing of blue crab, whose population had a significant reduction in 2022.

Therefore, environmental factors and human exploration are responsible for generating such an imbalance, and the development of policies and actions to promote sustainability is essential.

Find out more about sustainability here:

brainly.com/question/25713190

#SPJ1

5 0
2 years ago
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