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Stels [109]
2 years ago
14

What accounts for the variation Darwin observer among island species

Biology
1 answer:
vovangra [49]2 years ago
4 0

Answer AND Explanation:

The islands had different environments, and the organisms had adaptations that enabled the organism to live in those environments. The island had been inhabited by its own kind of species found nowhere else in the world. Darwin also noticed that considerable variation exists between members of the same species. Offspring vary from their parents and between themselves.

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Which pair of scientists put their ideas together to create the initial Cell Theory?
Jlenok [28]
Shleiden and Theodor Schwann were the first to recognize that all plants and animals are composed of cells.

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6 0
3 years ago
DNA is considered the blueprint of life, yet in eukaryotic organisms, such as humans, it never leaves the nucleus. Which of the
tensa zangetsu [6.8K]

Answer: B

Explanation: The DNA in the nucleus can be transcribed in mRNA, which can then leave the nucleus and be translated into proteins, which make up physical traits and characteristics.

5 0
2 years ago
Identify the properties of heat as it relates to the molecules within a body
Brut [27]

At the molecular level, the heat comes from the agitation of the molecules and therefore their atoms. This increase in agitation causes the molecules to be less condensed between them and will separate after breaks in the intermlecular bonds. This distends the material, as we see when we heat a metal, or a transformation of the phase of the material, such as melting ice or boiling water.

3 0
3 years ago
How s dominant allele masks the presence of a recessive allele
zysi [14]

the answer is the ratio is off

4 0
3 years ago
What is the basic difference between simple diffusion and facilitated diffusion across a cell membrane? hints?
Licemer1 [7]

Simple diffusion is the process by which a substance moves across a cell membrane from an area of high concentration to an area of low concentration. Substances that move by simple diffusion are able to diffuse directly across the phospholipid bilayer of the cell membrane. These substances are generally small and neutral, as large or charged particles cannot cross the phospholipid bilayer. Some examples of molecules that move by simple diffusion are carbon dioxide and oxygen.  

Facilitated diffusion is the process by which a substance moves across a cell membrane from an area of high concentration to an area of low concentration with the aid of a membrane protein. Substances that move by facilitated diffusion are not able to diffuse directly across the phospholipid bilayer of the cell membrane. These substances are generally large and/or charged. They therefore travel through a protein channel in the cell membrane along their concentration gradient. Some examples of substances that can move by facilitated diffusion are glucose, sodium ions and chloride ions.  

The similarities between facilitated diffusion and simple diffusion are:  

They both involve the movement of a substance across a cell membrane along its concentration gradient (from an area of high concentration to an area of low concentration).  

They are both examples of passive transport, as neither requires energy from the cell to move the substance across the membrane.

8 0
3 years ago
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