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Goryan [66]
3 years ago
13

1. What animals dominated the Mesozoic Era?

Biology
1 answer:
SVEN [57.7K]3 years ago
5 0
1. A !! Its Mesozoic era and Jurassic period !!

2.B !! Archaeopteryx led to evolution of birds as they are connecting link between birds and reptiles.

3.B !! Very popular to be known , dinosaurs extinct due to metroites collision !!
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How were fossils used to further substantiate Wegener’s hypothesis? Choose all correct answers.
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Answer:

b.

Explanation:

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3 years ago
1. How did Hubble determine that the Universe is expanding?
inna [77]

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Explanation:

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4 years ago
Each of the following will enhance and promote phagocytosis, except Multiple Choice tumor necrosis factor (TNF) and other cytoki
ozzi

Answer:

The correct answer is: deposition of interferon on bacterial cells.

Explanation:

Phagocytosis is the mechanism by which a cell uses its plasma membrane to ingest a big particle, forming a phagosome within the cell. It's a form of endocytosis used by the <u>immune system to eliminate pathogens such as </u><u>bacteria </u><u>and cell debris</u>.

Phagocytosis can be enhanced through various ways when an infection is taking place in the body. For example, cytokines and TNF are secreted by different kinds of cells to stimulate this process - for these cytokines to be released, certain parts of the bacteria called PAMPs need to be recognized by specific receptors located in phagocytes and epithelial cells called TLRs. Another way to stimulate this mechanism is by depositing complement fragments on bacterial cells, which is done thanks to the Complement cascade, a system of great importance in the innate immune response against extracellular bacteria - these fragments will opsonize ("mark") the pathogens for the phagocytes to recognize them and engulf them.

Interferon, on the other hand, while hugely important on the immune response against viruses and other pathogens that infect our cells by entering them and using their organelles to replicate and translate proteins, is not an enhancer of phagocytosis, as it is mostly involved in the translation of genes that will lead to the infected cell's death.

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3 years ago
Identify one bird that would most likely compete for food with the large tree finch
Tanzania [10]
Considering that this bird most likely is going to compete for food with the large tree finch possible examples are woodpecker finch because they use the same food resources and small tree finch because they eat mainly animal food. 
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The law that states rock layers closest to the surface are the newest or youngest rock is
liubo4ka [24]
That would be the law of superposition :)

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3 years ago
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