Calculo

Páginas: 2 (382 palabras) Publicado: 11 de octubre de 2011
NATURAL SCIENCES

Answer the questions 41 to 43 agree with the following information.

41. The cell shown in the diagram above corresponds to:

A. an animal cell, since it has defined nucleusand mitochondria.

B. a plant cell, given its cell wall, chloroplasts and vacuoles.

C. an animal cell, cell wall that presents and lysosomes.

D. a plant cell, that presents mitochondria andcell membrane.

42. the cell membrane is formed by a double layer of lipids, in which some proteins are embedded. The main function of the cell membrane is:

a. Define the cell

b. carry outprotein synthesis

c. store nutrients

d. produce chemical energy

43. The cell shown in the diagram is typical

a. mammals

b. bacteria

c. reptiles

d. plants-------------------------------------------------
Principio del formulario
answers questions from the 54 to 56 according to the following

in human nutrition is a process that involves the digestive, circulatory andrespiratory systems. digestion processes are regulated and coordinated by the nervous and endocrine systems.

in the mouth are the teeth and tongue, salivary glands besides helping in the process ofdigestion.
teeth are responsible for cutting and grinding food. kneaded and tongue pushes the food into the esophagus. thus the food particles become smaller and easier to swallow.

54. salivaryglands aid in the process that produced disgestion:

Principio del formulario
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Principio del formulario
answers questions from the 54 to 56 accordingto the following

in human nutrition is a process that involves the digestive, circulatory and respiratory systems. digestion processes are regulated and coordinated by the nervous and endocrinesystems.

in the mouth are the teeth and tongue, salivary glands besides helping in the process of digestion.
teeth are responsible for cutting and grinding food. kneaded and tongue pushes the food...
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