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ohaa [14]
3 years ago
14

What is true of hydroxide ions

Biology
1 answer:
Stolb23 [73]3 years ago
4 0

They have a negative charge.

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According to this evolutionary tree, the archaea and eukaryotes last shared a common ancestor ________.
Lostsunrise [7]

Answer:

2.5 billion years ago.

Explanation:

Evolutionary tree is constructed to understand the phylogeny and evolution relationship of the organism. The evolutionary tree is constructed by looking at the molecular and physiology of the different organisms.

The eukaryotes are more closely related to the archaea. Depending on the biochamical and molecular evidence is has been found that they share the common ancestor almost 2.5 billion years ago. This can also be deduced by the fossil evidence as well.

Thus, the answer is 2.5 billion years ago.  

5 0
3 years ago
Read 2 more answers
Which type of epithelium lines the inferior portions of the pharynx?
konstantin123 [22]

Answer:

The type of epithelium that lines the inferior portions of the pharynx is stratified squamous epithelium.

Explanation:

The pharynx is a structure made up of muscles and mucous membranes -like many internal organs- that is part of the respiratory system and is an intermediate step in the digestive tract.

This structure has two portions:

  • <em>Upper or nasopharynx </em>
  • <em>Lower, or oropharynx, in contact with the airways. </em>

Some even propose that the borderline surface between the pharynx and larynx can be called the laryngopharynx, due to its tissue structure.

The lower portion of the pharynx is covered by a squamous stratified epithelium, the inner layers of which rest on a basal lamina. The more superficial layers provide protection to the interior of the pharynx against friction, in addition to remaining lubricated by mucous secretion at that level.

Learn more:

Lower portion of the pharynx brainly.com/question/7300121

7 0
3 years ago
These animals all have similar
ladessa [460]
I would say C but I’m not too sure.
4 0
3 years ago
Are frogs nocturnal and are they warm blooded or cold blooded?
vova2212 [387]
Frogs are cold blooded and most camouflaged frogs are nocturnal
3 0
2 years ago
Read 2 more answers
Cellulose differs from starch in that?
torisob [31]
You can eat starch, but you can't digest cellulose
8 0
3 years ago
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