Why are mass extinctions important to geologic time?

Answers

Answer 1
Answer: Mass extinctions are important to geologic time because they wiped out many species all at once, and using the dinosaurs as an example, it causes new life forms or new ways of evolution to come about.


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If a skull becomes fossilized, it would most likely be what type of fossil?A mold fossil
Cast fossil
Petrified fossil
Trace fossil

Answers

 Mold/cast fossils occur when a plant or animal dies and is covered by layers of mud or silt. So its petrified

Similarly, legends of the Cyclops may be based on fossilized elephant skulls found in Crete and other ... The process of a once living organism becoming a fossil is called fossilization. ... The most common method of fossilization is permineralization. ... Some fossils form when their remains are compressed by high pressure.

Do carbon dioxide molecules go into or out of the cell ?

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We inhale oxygen, in which is carried around the body for cellular respiration. To answer your question, carbon dioxide molecules are converted from oxygen therefore, it technically goes out of the cell.

Select all that apply. _____ trigger other proteins and enzymes to stimulate cell division. External and internal stimuli Regulating protein agents Activators and inhibitors Metabolic pathways

Answers

The right answer is Regulating protein agents.

The regulating protein agents they are talking about is certainly the cyclin, especially cyclin B.

Cyclins have no enzymatic activity, they are regulatory proteins necessary for Cdk to be enzymatically active.

The activation of the Cyclin B / Cdk1 stock is the result of a series of complex and interdependent reactions:

When replication is complete, the Cdc25 phosphatase is no longer sequestered in the cytoplasm and passes into the nucleus, and at the end of the G2 phase, the Cdc phosphatase is activated, probably by phosphorylation by the Polo kinase. Cdc 25 then acts to remove the two phosphates inhibitors Cyclin B / Cdk 1 (after that, there is a process of self-activation).

Cyclin B / Cdk 1 complexes, once activated, allow entry into mitosis. For this, they intervene by triggering a number of phenomena that take place at the beginning of mitosis, that is to say in prophase.

What eats a Surgeonfish?

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Tuna, Bar jacks, and Tiger groupers.

Hope this helps!

-Payshence

2. How does the structure of an enzyme affect its function?

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Explanation:

Enzymes. Most enzymes are proteins and therefore their function is specific to their structure. ... The enzyme binds with the appropriate substrate only in the correct alignment and orientation to connect the molecules. The resulting enzyme-substrate complex enables the reaction to occur.

The child of a short mother with black hair and a tall father with red hair is tall with black hair. This occurred because A) the parents provided some of the chromosomes.
B) the parents and the child have identical nuclei.
C) the child inherited chromosomes from both parents. D) the child inherited more chromosome from the father.

Answers

Answer: The correct answer is -

C) the child inherited chromosomes from both parents.

The child inherits 50% of the chromosomes from his father and other 50% from his mother (through fusion of male and female gametes that are sperm and egg respectively).

Due to this, child exhibits some of the paternal traits and some of the maternal traits. As per the given information in this question, mother is short with black hair and father is tall with red hair. The child produced is tall with black hairs. This also suggests that tall height and black hair are dominant traits (depicted by dominant gene variant) that suprress the expression of recessive trait (depicted by recessive gene variant), which are short height and red hairs.

Your answer is C. the child inherited chromosomes from both parents. Good luck with the rest of homework and have a merry 1/10/17!!