Answer: Membrane proteins act as receptors to molecules like hormones.
Explanation:
Membrane proteins are proteins that are closely associated with a cell membrane. On the cell membrane, they could act as receptors to molecules like hormones that need to be transported across the hydrophobic lipid bilayer.
A good example of membrane proteins is sodium channel, that acts as receptor to neurotransmitters.
Answer:
Chloroplast
Explanation:
Endosymbiosis theory explains the origin of chloroplast and mitochondria in the eukaryotic organisms.
When the pro-eukaryotes engulfed the blue-green algae or photosynthetic bacteria, these bacteria formed the symbiotic relationship with the pro-eukaryotes. These photosynthetic bacteria transformed into the chloroplast organelles of the eukaryotes which can capture the sunlight and use it in the synthesis of glucose molecules. These eukaryotic cells later formed the plant kingdom.
Thus, the chloroplast is the correct answer.
Answer:
The correct answer is D) The gummy bear will increase in size because of osmosis or the movement of water into the cell.
Explanation:
As the gummy bear contain sugar an gelatin,its osmotic pressure is greater than that of water.So when a gummy bear sits in water, the water molecules is transported into cell of that gummy bear because gummy bear is hypertonic to water in which it sits.
As a result the gummy bear will increase in size.
Answer:
3 AND 6
Explanation:
think of the plate as a clock and the serving of vegetable is in 1 corner of the plate. the plate has 4 corners
- 12 to 3
- 3 to 6
- 6 to 9
- 9 to 12
The only answer can be 3 to 6
Answer:
Virulence, the capacity to cause disease, varies markedly among viruses. Some viruses cause lethal disease while others do not. For example, nearly all humans infected with rabies virus develop a disease of the central nervous system which ultimately leads to death. In contrast, most humans are infected with circoviruses with no apparent consequence.
Explanation: One explanation for viral virulence is that it facilitates transmission. However, a comparison of infections caused by two enteric viruses, poliovirus and norovirus, does not support this general view. Both viruses infect the gastrointestinal tract and are spread efficiently among humans by fecal contamination.
