What is the function of cytoplasmic streaming?

Cytoplasmic streaming promotes the movement of the fluid substance within a cell Cytoplasmic streaming, also called Protoplasmic Streaming or Cyclosis, plays an important role in cell processes because it promotes the movement of the fluid substance (cytoplasm) within a cell. Cytoplasmic streaming is important in plant cells and large single-celled animal cells because passive diffusion is not adequate … Read more

What does the Golgi apparatus do?

Golgi Apparatus functions as the “Post Office” inside the cells Golgi apparatus is in charge of the following functions in the cell: Golgi is the protein delivery center inside the cells Golgi is in charge of adding sugar molecules onto proteins Golgi also modifies lipid molecules Golgi synthesizes the sugar components of cell walls Many … Read more

What happens to proteins as they pass through the Golgi apparatus?

“Glycosylation” – Golgi apparatus modifies proteins by adding sugar molecules Protein processing is another important function of Golgi. The raw proteins synthesized from ribosomes are purely long chains of amino acids. These proteins need to be modified by adding carbohydrate (sugar units) portions to become “glycoproteins”. The prefix “glycol-” means “sugar”. [In this figure] Type … Read more

How does a cell rid itself of defective or malfunctioning organelles?

A cell degrades and recycle its old cell parts by autophagy “Autophagy” (aka “self-eating”) is a biological process when cells are short of nutrient supply. When the cells sense that the environment becomes more challenging or the nutrient source is low, the cells turn on autophagy. In order to obtain the nutrient, the cells have … Read more

How many organelles are in a cell?

Within the cytoplasm, the major organelles and cellular structures include: (1) nucleolus (2) nucleus (3) ribosome (4) vesicle (5) rough endoplasmic reticulum (6) Golgi apparatus (7) cytoskeleton (8) smooth endoplasmic reticulum (9) mitochondria (10) vacuole (11) cytosol (12) lysosome (13) centriole. Plant cells have 3 more unique organelles: (14) cell wall (15) central vacuole (16) … Read more

Which of these organelles manufactures proteins bound for secretion out of the cell?

In order to manufacture extracellular proteins for secretion, several organelles, including ribosomes, endoplasmic reticulum, Golgi apparatus, and secretory vesicles have to work together. Golgi apparatus is the protein delivery center inside the cells The function of Golgi apparatus is like the post office inside the cells. It usually locates close to the endoplasmic reticulum (ER). … Read more

Which organelle produces sugars while releasing oxygen, and in which cell could it be found?

Chloroplasts in plant cells What is the biological function of chloroplast? Chloroplasts convert the light energy of the Sun into sugars (a process called photosynthesis) that can be used by cells. At the same time, photosynthesis produces oxygen (O2) and consumes carbon dioxide (CO2). For this reason, plants are the basis of all life on Earth. … Read more

Which plant cell organelle contains its own DNA and ribosomes?

Chloroplast and Mitochondrion Chloroplasts and mitochondria share many in common. Both organelles have two layers of membranes – called outer and inner membranes. Chloroplasts and mitochondria also have their own copies of DNA, which are independent of the cell nuclei. There are specialized ribosomes inside chloroplasts and mitochondria to make proteins only for these organelles. Scientists believe chloroplasts and mitochondria are … Read more