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Rzqust [24]
3 years ago
12

After Darwin proposed his ideas about natural selection as a mechanism for evolution, it took time before evolution was generall

y considered a theory. Why do we now refer to it as a theory?
Biology
2 answers:
dezoksy [38]3 years ago
4 0

Enough supporting evidence has accumulated for it to be called a theory.  Darwin did not invent the idea and he did not observe and collect all of the supporting evidence on his own. However, he carried out the research necessary to document that evolution has occurred, proposed a plausible mechanism (natural selection) to explain why and how it occurs, and then published the theory and evidence in order to make it available to other scientists and to the general public. Unlike Lamarck's idea that individuals alter their traits based on the environment, Darwin proposed that variations already existed within a population and those individuals with the more favorable, or useful, traits survive to reproduce. These traits then become more common in the population, leading the population to evolve slowly over time.


sashaice [31]3 years ago
3 0

politics tbfh but this answer has to be 20 characters sooooooooooooo


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Living cells are made of:<br> nitrogen<br> hundreds of different proteins<br> a specific protein
bekas [8.4K]

Answer:

All cells are made from the same major classes of organic molecules: nucleic acids, proteins, carbohydrates, and lipids.

Explanation:

4 0
2 years ago
Read 2 more answers
So were is the genetic material find in a prokaryotic cell
tiny-mole [99]
Endomembrane system -- not in prokaryotes
cytoskeleton -- a structural part of cytoplasm sometimes occurrent in prokaryotes
mitochondria -- not in prokaryotes 
nucleus -- if this is a "membrane-bound" nucleus, then definitely not in prokaryotes
cytoplasm -- this is the fluid that houses everything in the cell membrane
flagella -- little "tail" for locomotion, so no
cilia -- similar to flagella, little feelers usually for locomotion 
ribosomes -- these make protein using amino acids
chloroplasts -- not in prokaryotes
membrane -- just a casing surrounding a cell or organelle
organelles -- general word for the parts of a cell that perform various functions
cell membrane -- just the casing for the cell, not where genetic material's located
<span>nucleoid --- ding ding ding :-) this is it; a nucleoid is the genetic material which is loosely existing in the cytoplasm of a prokaryotic cell</span>
5 0
3 years ago
The surface of the skin can be mapped into distinct regions, each served by a single spinal nerve: these regions are called:
Ivan

Answer:

The correct answer is D. The surface of the skin can be mapped into distinct regions, each served by a single spinal nerve: these regions are called dermatomes.

Explanation:

A dermatome is the area of skin innervated by a single spinal nerve and its spinal ganglion. The cutaneous nerves are those that reach the skin, picking up the sensitivity of the skin. Each cutaneous nerve is distributed in a certain area of skin, called a dermatome.

A pair of posterior or sensory roots and a pair of anterior or motor roots arise from each cord segment, joining laterally at the level of the intervertebral foramen to form a mixed spinal nerve. Each of these innervates a strip of skin called a dermatome, so the body surface can be considered a true mosaic of these.

In the extremities the arrangement of dermatomes is more complicated because of the embryological rotation of the limbs as they grow from the trunk.

6 0
3 years ago
DNA contains the code for constructing which molecules?
mixas84 [53]
The answer is proteins.


The process of translation can be seen as the decoding of instructions for making proteins, involving mRNA in transcription as well as tRNA. The genes in DNA encode protein molecules, which are the "workhorses" of the cell, carrying out all the functions necessary for life.
5 0
3 years ago
What is the physical description of sulfur
Olenka [21]
The physical description of sulfur is hydrogen
8 0
3 years ago
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