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Murljashka [212]
3 years ago
7

If, after extensive research, the expected observations predicted by a theory fail to materialize, then the theory _____

Biology
2 answers:
Marizza181 [45]3 years ago
7 0
Should be abandoned or modified
Kisachek [45]3 years ago
5 0
<span>The question is asking us to complete the sentence "If, after extensive research, the expected observations predicted by a theory fail to materialize, then the theory" and the way we can complete it is by saying that the theory is likely wrong - the theory must then be rejected and a new theory should be proposed, one that will lead to a new hypothesis which then should be tested. </span>
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6 0
3 years ago
Use the drop-down menus to decide if an example of similar traits is likely a homologous structure or an analogous structure.
snow_tiger [21]

Answer:

- Bird wings and dragonfly wings are both used for flight: Analogous structure

- Clams and snails both have similar muscle structure even though the muscles do different jobs: Homologous structure  

- Human and giraffe necks both have 7 vertebrae because we are related: Homologous structure  

- The flaps of a Venus flytrap have a similar makeup to oak leaves: Homologous structure  

Explanation:

Analogous structures are similar structures that have the same or similar functions in unrelated organisms. Analogous structures aren't the result of evolutionary relationships among organisms (i.e., they were not inherited from a common ancestor). On the other hand, homologous structures are structures inherited from a common ancestor. Homologous structures may or may not have an identical function, but they are the result of evolutionary relationships among organisms and, therefore, they are genetically related.

6 0
3 years ago
Read 2 more answers
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Serga [27]
Protein channels + no energy spent + following concentration gradient = passive transport via facilitated diffusion :)
8 0
3 years ago
What landform develops on coral reefs as a result of wave action
Talja [164]
A reef is a ridge of a rock of any type of land that extends some distance just under the surface of the water. A coral reef is a lot of calcium carbonate that is also made up of living creatures. A coral reef is created when a small amount of dead coral turns into calcium carbonate. This process is very slow. The famous reefs are the Great barrier Reef of Austria and Belize and Cayman Islands.
Wave actions are usually not a problem due to hard coral reefs. The reef reduces a wave energy. But sometimes waves can break off or flatten large portions of coral reefs, forming grooves in once circular reef. The higher areas between the grooves are known as buttresses and may grow together at the top producing arches. 
Answer:  Landform that develops on coral reefs as a result of wave action are Arches.  
8 0
3 years ago
when looking for Endoplasmic reticulum of a cell, the microscope zooms in enough to see ribosomes that are embedded in the outsi
nalin [4]

Answer:

Rough ER

Explanation:

This type of Endoplasmic Reticulum has ribosomes around its outer membranes hence is a major organelle in the processing of cell proteins. When polypeptide chains are formed in the ribosomes, they enter the lumen of the RER where they are folded properly using chaperones and post-translational modification carried out on them.

8 0
3 years ago
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