RNA Synthesis and Evolution
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RNA Synthesis and Evolution

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Questions and Answers

Protobionts are capable of directing the synthesis of new copies of themselves.

False

RNA synthesis is the first stage of chemical evolution.

False

Natural selection operated on the different RNAs during the protobiont synthesis stage.

True

Prokaryotic cells evolved from the diversity of protobionts.

<p>True</p> Signup and view all the answers

Proteins can serve as templates for synthesis because of specific base pairings between complementary nucleotides.

<p>False</p> Signup and view all the answers

Melvin Calvin introduced the term 'biological evolution' in the context of chemical evolution.

<p>False</p> Signup and view all the answers

The 'Calvin cycle' explains the process of chemical evolution on the primitive Earth.

<p>False</p> Signup and view all the answers

Chemical evolution gave rise to the first forms of eukaryotic life.

<p>False</p> Signup and view all the answers

The building block molecules formed during chemical evolution included amino acids, fatty acids, and nucleobases.

<p>True</p> Signup and view all the answers

The Big Bang theory proposes that the building block molecules were formed on Earth through endogenous synthesis.

<p>False</p> Signup and view all the answers

The evolution of photosynthesis utilized H2O to convert CO2 to organic molecules.

<p>False</p> Signup and view all the answers

ATP is a by-product of oxidative metabolism.

<p>False</p> Signup and view all the answers

The development of oxidative metabolism occurred before photosynthesis.

<p>False</p> Signup and view all the answers

Glycolysis is a semi-conservative metabolic energy pathway that uses ATP.

<p>False</p> Signup and view all the answers

The release of O2 as a by-product of photosynthesis led to the development of glycolysis.

<p>False</p> Signup and view all the answers

Plant cells are more diverse than animal cells.

<p>False</p> Signup and view all the answers

Ground tissue, dermal tissue, and vascular tissue are the three main tissue systems found in animal cells.

<p>False</p> Signup and view all the answers

Epithelial tissue forms sheets that cover the surface of and line internal organs in plants.

<p>False</p> Signup and view all the answers

Nervous tissue is composed of nerve cells and are highly specialized for signal transmission throughout the body in plants.

<p>False</p> Signup and view all the answers

Xylem and phloem are responsible for the transport of oxygen and carbon dioxide in plants.

<p>False</p> Signup and view all the answers

Parenchyma cells are a type of dermal tissue found in plants.

<p>False</p> Signup and view all the answers

Collenchyma and sclerenchyma are two types of xylem cells found in plants.

<p>False</p> Signup and view all the answers

Blood is a type of tissue found in plants that functions in oxygen transport, immunity, and inflammatory reactions.

<p>False</p> Signup and view all the answers

Muscle tissue provides structure and elasticity to the body in plants.

<p>False</p> Signup and view all the answers

The human body is composed of fewer than 100 different kinds of cells.

<p>False</p> Signup and view all the answers

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