Answer:
b. a fluid-mosaic of phospholipids and proteins
Explanation:
According to the currently accepted structure, the cell membrane is made up of two layers of amphipathic phospholipids in which proteins are embedded or present. The hydrophobic tails of phospholipids make the core of the membrane. These tails are not covalently attached to each other and are free to move laterally. Likewise, the protein molecules float in the fluid bilayer. This mosaic pattern is not static since the positions of the proteins in the bilayer are constantly changing. The fluid mosaic model to explain the structure of the cell membrane was given by S.J. Singer and Garth L. Nicolson in 1972.
Answer:
The Calvin cycle, light-independent reactions, biosynthetic phase, dark reactions, or photosynthetic carbon reduction cycle of photosynthesis are the chemical reactions that convert carbon dioxide and other compounds into glucose.
Explanation:
Answer:
Organism.
Explanation:
The cell is the smallest form of life. Cells work together to form tissues, tissues work together to form organs, and organs work together to create an organ system, and organ systems work together to create organisms. I believe "organism" includes all of these other levels.
Answer:
Option B.
Transcription will be silenced.
Explanation:
Gal4 is a transcription factor that regulate gene expression in a positive way. It is a year protein that regulates gene induced by galactose. It lies upstream of the activating sequence and activate them. It binds to 17 basepair sites of the upstream activating sequence(UAS). If USAg prevents Gal4 from binding, transcription will be silenced.
Answer:
bilateral symmetry
Explanation:
The mollusks are a group of animals that is one of the oldest in existence. This groups of animals has two primary characteristics that make them easily distinguishable from the other animal groups, one of them being that they are unsegmented, and the other that they are bilaterally symmetrical. Being bilaterally symmetrical means that the left side and the right side of the body are perfect copies of one another, mirror images. Animals that are considered as mollusks are the snails, slugs, octopuses, squids, cuttlefish, shrimps etc.
