The cell theory states that all cells arise from pre-existing cells, not spontaneously.

The anther is part of the male reproductive structure (stamen) and is not part of the female reproductive structure.

The anther is part of the male reproductive structure (stamen) of a flower, while stigma, style, and ovary are parts of the female reproductive structure (pistil).

Viruses are not included in the five-kingdom classification as they are not considered living organisms.

The root is not a part of the flower; it is part of the plant's root system.

The ovary is not a part of the male reproductive system; it is part of the female reproductive system.

Fossil fuels are not products of biotechnology; they are natural resources formed from ancient organic matter.

Glucose is not a product of cellular respiration; it is a reactant that is broken down to produce ATP, water, and carbon dioxide.

Sugar is not a product of microbial fermentation; it is a substrate that microbes ferment.

Brittleness is not a property of metals; they are typically malleable and ductile.

Nitrogen is colorless, odorless, and diatomic, but it does not support combustion.

Thermoplastics are generally not brittle at room temperature; they can be reshaped upon heating.

Transition metals generally have high density, not low density.

Tuberculosis is primarily a respiratory disease and is not classified as a sexually transmitted disease.

Tuberculosis is not a sexually transmitted infection; it is primarily a respiratory disease.

The Calvin cycle is part of photosynthesis, not cellular respiration.

Synthesis is not a stage of the cell cycle; it refers to the S phase where DNA is replicated.

Addition of monomers is not a step in condensation polymerization; it is characteristic of addition polymerization.

Transcription is the process of synthesizing RNA from DNA, which is not a step in gene cloning.

Protein synthesis is not a step in recombinant DNA technology; the process focuses on manipulating DNA rather than directly synthesizing proteins.

Weight gain is not a typical symptom of diabetes; rather, weight loss is more common in type 1 diabetes.

Epithelial tissue is not a type of connective tissue; it serves as a protective layer and is distinct from connective tissues.

Quadratic is not a recognized type of crystal system; the correct systems include cubic, tetragonal, hexagonal, orthorhombic, and others.

Amorphous solids do not have a long-range order and are not classified as crystalline solids.

Transgenic inheritance is not a recognized pattern of inheritance; it refers to organisms that have been genetically modified.

Xylem is a complex tissue, while parenchyma, collenchyma, and sclerenchyma are types of simple permanent tissues.

Electrolysis is not a type of transport in plants; it is a chemical process involving the decomposition of substances.

Water pollution is not a use of microbes; rather, microbes can help improve soil fertility and act as biopesticides.

Causing infections is not a beneficial use of microbes; it is a harmful effect.

Prokaryotic cells do not have a nucleus; their genetic material is not enclosed within a membrane.