The plasma membranes BEST described CA double layer of phospholipids with hydrop

Question

The plasma membranes BEST described CA double layer of phospholipids with hydrophobic tail pointing toward the cytoplasm of A single layer of phospholipids with water molecule attaché to one side CA double layer of phospholipids molecules with hydrophilic heads directed toward each A double layer of phospholipids molecules with hydrophobic tails oriented toward each The net movement of molecules from a high concentration to low concentration is best described by which of the following, CDiffusion CActive transport Exocytosis Endocytosis The process by which white blood cells engulf bacteria is termed Adhesion Phagocvtosis Exocytosis Pinocvtosis Plant cell walls are made of Pectin Proteins Lipids Cellulose

Explanation / Answer

1) ANSWER IS:

A double layer of phospholipids molecules with hydrophobic tails oriented toward each

EXPLANATION:

Plasma membrane separates the interior of cells from the outside to protect the cell from its surrounding environment.
The phospholipid bilayer consists of two layers of phospholipids, which has hydrophobic, or water-repelling interior and a hydrophilic, or water-loving, exterior environment.

2) ANSWER IS: Diffusion

EXPLANATION:

The movement of molecules from a region of higher concentration to a region of lower concentration is called diffusion.

3)ANSWER IS: phagocytosis

EXPLANATION:

When white blood cells encounter bacteria or any other invader they engulf and destroy them by phagocytosis process. White blood cell surrounds the bacteria and releases enzymes that digest the bacteria to destroy it.

4) ANSWER IS: cellulose

EXPLANATION:

The plant cell wall is primarily made up of cellulose, most abundant macromolecule on Earth. Cellulose fibers are long, linear polymers of hundreds of glucose molecules that aggregate into bundles called as microfibrils.

5) ANSWER IS: Protein

EXPLANATION:

Ribosomes are the site of protein synthesis.

- Messenger RNA (mRNA) molecules carry the coding sequences for protein synthesis.

- ribosomal RNA (rRNA) molecules form the core of a cell's ribosomes where protein synthesis takes place).

- transfer RNA (tRNA) molecules carry amino acids to the ribosomes in protein synthesis.

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