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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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Describe how the structure of sucrose differs from that of erlose.
grin007 [14]
<span>Sucrose is a disaccharide. It has the chemical formula C12H22O11. Its structure is composed of one glucose and one fructose joined at the glucosyl C1 to the fructosyl C2 by an ether bridge.

Erlose is a trisaccharide, composed of two glucosyls and one fructosyl subunit. Erlose can be formed from sucrose and glucose by joining the glucose C1 to the C4 of the glucosyl subunit of glucose by an ether bridge.</span>
4 0
3 years ago
All eukaryote cells belong in which group?
Wittaler [7]

Answer:

The correct answer is a. domain Eukarya.

Explanation:

Bacteria archaea and eukarya are considered as the three domains of life. Bacteria and eukarya lack a membrane-bound nucleus and other membrane bound organelle therefore they are considered in prokaryotes and organisms having membrane-bound nucleus comes under domain eukarya.

So the organism which have eukaryotic cell comes under domain eukarya. These organisms can be single cellular or multicellular and their genetic material is packed in a double membranous structure called the nucleus. So the correct answer is a. Eukarya.

7 0
3 years ago
Which statement about phloem is true? *
Ivan

Answer:

2. It carries water from the roots to the leaves.

Explanation:

Phloem is the vascular tissue in charge of transporting and distributing organic nutrients.

4 0
3 years ago
How does primary succession occur?
Inessa [10]

Answer:

Primary succession occurs in areas without any soil where basically nothing is there. After an event such as a volcanic eruption, pioneer species such as lichens and mosses are able to colonize the land since they can grow without soil and are primitive. Lichens can break down rock to form soil and they can add small amounts of organic matter to the rocks when they decompose to make even more soil. Simple plants like ferns can then grow in the created soil. After these simple plants die, more organic material is added to the soil and the soil thickens, allowing grasses, wildflowers, and other plants to begin to take over. Next, after these plants die, enough nutrients are added to the soil for trees and shrubs to survive. Finally, insects, small birds, and mammals begin to move into the area and form a community, so what was once bare rock can now support a variety of life.

3 0
3 years ago
Develop a theory on the relationship between the amount of growfast used and the growth rate of carrots?
Sati [7]
The more growfast used the higher the growth rates of carrots are expected to be.
8 0
3 years ago
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