In 1859, Charles Darwin described a model of how living things change over time. He described this model and the evidence that supported it in a book called On The Origin of Species. Which of the following is the scientific term is used to describe a testable model that seeks to explain natural phenomena? a) data b) hypothesis c) observation d) theory

Answers

Answer 1

Answer: The correct answer is D. A scientific theory is a well substantiated explanation of some aspect of the natural world. A scientific theory is usually an acceptable and organised system of knowledge that applies to a particular circumstance. Scientific theories usually present proven explanations about the phenomenon observed.

Answer 2

Answer:

Answer:

The answer would be D

Explanation:

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Which is the best characteristic that distinguishes the kingdom Archaebacteria from the kingdom Eubacteria

Answers

Archaebacteria are the oldest living organisms on earth. They are prokaryotes and unicellular. Archaebacteria are found in very harsh conditions (such as at the bottom of the sea or in volcanic vents). This is thought to be because the early Earth’s atmosphere was filled with poisonous gases and was very hot – nothing could survive, except the archaebacteria. These slowly gave way to modern organisms when the Earth’s conditions settled down and oxygen was introduced to the atmosphere. "

Answer:

A, cell wall structure

Explanation:

Without ribosomes, a cell would not produce a.lipids.
b.proteins.
c.salt.
d.water.

Answers

Answer:

b. proteins.

Explanation:

Ribosomes are cell organelles present in the cytoplasm of prokaryotic and eukaryotic cells. In prokaryotic cell ribosome is 70S (S is the Svedberg unit) type and in eukaryotes it 80S type. Besides in cytoplasm of eukaryotic cells, mitochondrial matrix and stroma of the chloroplasts have their own ribosomes similar to prokaryotic ribosomes. Ribosomes in association with endoplasmic reticulum provide platform for the synthesis of polypeptide (protein). The transcribed mRNA is translated into primary protein on ribosomes. Lipids are synthesised by smooth endoplasmic reticulum.

proteins
ribbons are responsible for making proteins in a cell

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