Answer:
Demostrar que los seres vivos surgen de los seres vivos es la principal razón para realizar experimentos.
Explicación:
El experimento de Pasteur en "Frascos cuello de cisne" ayudó a refutar la teoría de la generación espontánea porque Pasteur usó caldo de carne hervido en matraces cuello de cisne para mostrar que los microbios en el aire son responsables de causar la contaminación de los alimentos. Al mostrar que las criaturas vivientes surgen de la materia viva en su experimento, la teoría de la generación espontánea resulta inválida.
Answer:
chemical, mechanical, electrical
Explanation:
Plants and animals could not live without nitrogen. It is an important part of many cells and processes such as amino acids, proteins, and even our DNA. It is also needed to make chlorophyll in plants, which plants use in photosynthesis to make their food and energy.
Nitrogen is an important component of many essential structural, genetic and metabolic compounds in plant cells. It is also an elementary constituent of numerous important organic compounds including amino acids, proteins, nucleic acids, enzymes, and the chlorophyll molecule.
Of all the essential nutrients, nitrogen is the one that is most often limiting for crop growth. Nitrogen is the nutrient which normally produces the greatest yield response in crop plants, promoting rapid vegetative growth and giving the plant a healthy green color.
lymphocytes are specialized T cell ,B cell, and natural killer cell .
these cells are distinguished from other lymphocytes by a protein on their surface known as the B cell receptor .these protein is specialized to recognize and attach to specific antigens.