Vista previa 1 fuera de 6 páginas
Vista previa 1 fuera de 6 páginas
Algunos ejemplos de esta serie de preguntas de práctica
1.
Where is the nucleus found in cells?
Respuesta: Animal cells: Found in the center of the cells. Plant cells: Pushed to one side due to the large vacuole.
2.
Name two functions of the nucleus.
Respuesta: 1. Controls all cell activities, because the DNA found in the nucleus is responsible for the formation of proteins. Since hormones and enzymes are proteins in nature and they control all metabolic reactions, we can say that the nucleus controls all activities of the cell. 2. Transmits hereditary characteristics from parent to offspring.
3.
What are nucleic acid monomers (nucleotides) made up of?
Respuesta: 1. Phosphate (P) 2. Sugar (S) 3. Nitrogen base (NB)
4.
Name the three types of DNA of where they are located.
Respuesta: 1. Nuclear DNA - found within the nucleus 2. Mitochondrial DNA - found outside the nucleus (extra-nuclear DNA) 3. Chloroplastic DNA - found outside the nucleus (extra-nuclear DNA)
5.
Name the two types of nitrogen bases and identify their complementary base pairs.
Respuesta: 1. Purines - adenine; guanine 2. Pyrimidines - thymine; cytosine
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