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daser333 [38]
3 years ago
12

What are index fossils and how can they be used to help find the relative age of the rock layers?

Biology
1 answer:
bagirrra123 [75]3 years ago
8 0

Answer:

Certain fossils, called index fossils, help geologists match rock layers. To be useful as an index fossil, a fossil must be widely distributed and represent a type of organism that existed for a brief time period.

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In receptor-mediated endocytosis, which event occurs immediately after the fusion of coated vesicles with lysosomes that are fil
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The acidic environment of the lysosome and the lysosomal enzymes detach the ligands from their receptors.

Receptor-mediated endocytosis is a process in which cell surface receptors are employed for transporting substances such as proteins, hormones, and metabolites from extra-cellular matrix into the cells. Receptor-mediated endocytosis usually occurs through clathrin (a type of protein)-coated pits and vesicle and it allow only the receptor-specific substances to enter the cell. Under this process, molecule binds to protein receptors after which the receptor molecule moves to clathrin coated pits and vesicle. The cell membrane then folds inwards and there is fusion of a coated vesicle. After this, the ligands are detached from their receptors.  



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3 years ago
A bond of the following elements would be of what type? Drawing a model may be helpful.
Tresset [83]

The answer is ionic :)

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PLEASE ANSWER QUICKLY LIMIT TIME ! <br><br> Make a list of 5 facts about the moon.
nika2105 [10]

Answer:

The moon is earths only permanent natural satellite

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7 0
3 years ago
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If there is an excess of reactive oxygen species (ross) in a system, where would the problem least likely be found?
serious [3.7K]

This condition is known as a super oxide in which mutated enzyme extremely functional because it helps in production of cells .

when unstable molecules that contains oxygen and that easily react with other molecules in the cells. a build up of reactive oxygen species and cells causes damage of DNA ,RNA & protein ,which cause cell death.

super oxide refers various toxic oxygen containing free radicals such as monovalant anion O2 (negative) or that compound containing potassium super oxide KO2. reactive oxygen can cause damage to the basic building block of the cell. DNA damage can occur in the form of double stranded breaks as a result of reactive oxygen induced conversion of guanine to 8-oxo guanine.

To learn more about the cell death here

brainly.com/question/14263310

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7 0
1 year ago
Bomb shelters are found under the school. Some people refer to these areas as the catacombs. true or false?
Dmitriy789 [7]
That would be false. A catacomb is an ancient underground cemetery.

exact meaning: an underground cemetery consisting of a subterranean gallery with recesses for tombs, as constructed by the ancient Romans.
3 0
2 years ago
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