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Korvikt [17]
2 years ago
13

Describe how plant cells keep themselves rigid. Word Count: of 125

Biology
1 answer:
Sveta_85 [38]2 years ago
4 0

Las paredes externas de una casa o un automóvil brindan una barrera fuerte e inflexible que protege a sus habitantes humanos de un mundo externo rudo e impredecible. Podría esperarse que el límite externo de una célula viva estuviera construido de una barrera igual de fuerte e impenetrable porque también debe proteger su delicado contenido interno ante un ambiente no vivo y a menudo inhospitalario. Sin embargo, las células están separadas del mundo externo por una estructura delgada y frágil llamada membrana plasmática que sólo mide 5 a 10 nm de espesor. Se requerirían casi 5 000 membranas plasmáticas apiladas una sobre otra para igualar el grosor de una sola página de este libro.

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The pupil is the adjustable opening in the center of the eye through which light enters. transparent structure that focuses ligh
Black_prince [1.1K]

Answer:

1) IRIS

2) LENS

3) RETINA

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Note: Answers 1 - 4 follows question pattern

Explanation:

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Fovea Centralis is at the center of the retina responsible for sharp and accurate vision, also it is where cones cells cluster.

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