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Bas_tet [7]
4 years ago
11

What is a eukaryote, and when did eukaryotes first arise?

Biology
2 answers:
konstantin123 [22]4 years ago
8 0
Eukaryotes are bigger
Vilka [71]4 years ago
5 0
An organism whose cells contain membrane-bound organelles and whose DNA is enclosed in a cell nucleus and is associated with proteins.

The first eukaryotes appeared between 1.5 and 2 billion years ago.
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What effect does the size of an amino acid on the retention factor?
Anarel [89]

According to proteomic data analysis, the N-terminus residues highly influence the retention of amino acids due to their role in ion-pairing. Every amino acid has a retention coefficient factor depending on the N-terminus residues it contains. Therefore, the longer the amino acid the higher the likelihood of it having high N-terminus residues and consequent high retention co-efficient.  





6 0
3 years ago
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Sarah wants to know which brand of nail polish lasts the longest without chipping.She buys 4 types of nail polish - Essie (which
son4ous [18]

Answer:

Different brands of nail polishes used by Sarah.

Explanation:

While conducting an experiment two different variables are considered namely dependant variable and independent variable. The variable which is continuously changed to see the effects is called as independent variable and the variable which is being tested is called as dependant variable.

In the given scenario, Sarah want to know best brand of nail polishes which lasts longest without chipping. Thus the different brands of nail polish used by her is considered as independent variable.

7 0
3 years ago
A person who has cerebrospinal fluid draining from the ear probably has a fracture of the __________ bone. occipital zygomatic f
Tanzania [10]

A person who has cerebrospinal fluid draining from the ear probably has a fracture of the temporal bone.

<h3>What is Cerebrospinal Fluid?</h3>

All animals have cerebrospinal fluid (CSF), a transparent, colorless bodily fluid that is present in the tissue that covers their brains and spinal cords.

Specialized ependymal cells in the choroid plexus of the brain's ventricles create CSF, which is then absorbed in arachnoid granulations. About 125 mL of CSF are present at any given moment, and 500 mL are produced daily. The CSF protects the brain inside the skull mechanically and immunologically by acting as a shock absorber, cushion, or buffer. The cerebral autoregulation of cerebral blood flow is another essential role played by CSF.

The ventricular system and subarachnoid space, which are located surrounding and inside the brain and spinal cord, respectively, are occupied by CSF.

Learn more about CSF with the help of the given link:

brainly.com/question/7142724

#SPJ4

5 0
2 years ago
Sydney wants to explain the concept of the axial and appendicular skeleton.if she uses an analogy of a coat rack,what would the
stealth61 [152]

The area residing in the center explains the bilatial tibulti, which precedents the bratuluti tubilitu. As for the rack itself, it has a half-moon (in laymens terms) axial, which appendages smoothly in all transition. The answer would certainty relate less to moving and a part itself, and more towards coordination or other terms (for which there are many), as this question is quite subjective.

In short, it has nearly free half-moon movement, though blocked in transition by its own quartsor axial.

5 0
3 years ago
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The common passageway shared by the respiratory and digestive systems is the
goldfiish [28.3K]
The common passageway shared by the respiratory and digestive system is the pharynx
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