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Korolek [52]
3 years ago
7

Why are organelles surrounded by membranes?

Biology
1 answer:
ehidna [41]3 years ago
7 0
Membranes control whats good or whats bad to get inside the cell, basically it allows good things to pass into the cell and bad things to stay out
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C) needs little sunlight

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What’s a characteristic of windward
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The windward side faces the prevailing, or trade, winds, whereas the island's leeward side faces away from the wind, sheltered from prevailing winds by hills and mountains. Here is only some characteristics.
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Please provide the answer for the problem below.
Lera25 [3.4K]

Answer:

cell wall) function:protects and holds the structure of the cell

X for plant cell

chloroplast) absorbs energy from sun through photosyn. to make nutrients

plant cell-x

cytoplasm) a gel like substance in which most of the cell's processes take place

x for plant&animal

ER) packages & transports proteins made by ribosome to the golgi apparatus

GA) transports proteins to their destined location throughout the cell

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vacuole: stores food and water

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HOPE THIS HELPS

Explanation:

8 0
3 years ago
Question 22 (Essay Worth 3 points) (02.01 HC) A prediction of the theory of Plate Tectonics is that new volcanoes can form at th
Darina [25.2K]

Answer:

What would be the expected result of the experiment?

For the drawing of the map part, the scientific will find that effectively, a very large number of volcanoes are located near the meeting points of tectonic plates. The volcanoes that aren't now at the edge of the plate were most probably at the moment of their formation, and were moved away by the movement of the plate.

But I doubt the scientist would be able to identify many new volcanoes, because the creation of a volcano isn't something happening overnight.

How would you interpret the results if the scientist observes no new volcanic activity?

I would say that does NOT invalidate the theory because the observation period is extremely short.  10 years is an insignificant amount of time geologically speaking... the study would have to be conducted over at least 1,000 years to maybe have some results at all.   Just imagine how many volcanoes there would be if a new one was created every 10 years along the side of a tectonic plate.

6 0
3 years ago
Which data would not affect maximum likelihood estimates of phylogenies when comparing different tree hypotheses?.
Solnce55 [7]

The tree topology

The lengths of the branches

The branching order of the tree

Nucleotide substitution rate

These would not affect maximum likelihood estimates of phylogenies when comparing different tree hypotheses.

<h3>What is tree topology?</h3>
  • A unique kind of structure called a tree topology has numerous connected parts arranged like the branches of a tree.

<h3>The lengths of the branches:</h3>
  • Branch lengths are a sign of genetic divergence; the longer the branch, the more genetic divergence has taken place.
  • Usually, we calculate the average number of nucleotide or protein substitutions per site to assess the degree of genetic alteration.

<h3>The branching order of the tree:</h3>
  • The topology of a tree refers to its branching structure.
  • Species (or higher taxa), populations, genes, and proteins are examples of taxonomic units that the nodes represent.
  • A branch is referred to as an edge, and it represents an estimate of the length of time between the evolutionary relationships between taxonomic units.

<h3>What is nucleotide substitution rate?</h3>
  • The instantaneous rate of change from each of the four nucleotides to each of the other four nucleotides is summarized in the nucleotide substitution rate matrix.

To learn more about tree phylogeny visit:

brainly.com/question/8573900

#SPJ4

7 0
1 year ago
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