A substance that enters the cell without the expense of cellular ATP, but are too large to directly pass through the membrane, use membrane protein in order to gain access to the inside of the cell.
Further Explanation:
The plasma membrane is an outer boundary of the cell. It is composed of phospholipids and proteins. It is also called selectively permeable membrane because it allows only selective substances to cross. Transport across the membrane can be active and passive transport. Active transport requires energy for the movement of substances, whereas in passive transport the molecules move across the membrane without using energy. Water can freely move inside the cell with the help of aquaporins. Also, the osmotic gradient set plays a vital role in the transportation of water.
Glucose and electrolytes require energy to be transported. Facilitated diffusion is a passive movement of the molecules, across the “plasma membrane”, through the aid of the trans membrane protein or substrate-specific protein. This is used by the molecules that are not able to cross the phospholipid layer freely. But, it doesn’t need energy for the transportation process. Glucose is transported by this method.
Learn More:
Answer Details:
Grade: High School
Subject: Biology
Chapter: Cell Biology
Keywords:
Glucose, transported, facilitated diffusion, water, transportation, permeable membrane, phospholipid, composed, plasma membrane, osmotic gradient.
The spinal cord
The spinal cord part of the central nervous system is involved in this automatic response.
The spinal cord is a long, tiny tube of nervous tissue that support cells which passes from the end of the brainstem to the bottom of the spine. The central brain nervous system is made up of the spinal cord and the brain. The spinal cord is the center for coordinating many reflexes and it plays major roles in the transmission of nerve signals (messages) between the brain and the rest of the body.
Melanism related to the process of adaptation is called adaptive. Most commonly, dark individuals become fitter to survive and reproduce in their environment as they are better camouflaged. This makes some species less conspicuous to predators, while others, such as black panthers, use it as a foraging advantage during night hunting.Typically, adaptive melanism is heritable: A dominant gene, which is entirely or nearly entirely expressed in the phenotype, is responsible for the excessive amount of melanin.
Adaptive melanism has been shown to occur in a variety of animals, including mammals such as squirrels, many felines and canids, and coral snakes. Adaptive melanism can lead to the creation of morphs, the most notable example being the peppered moth, whose evolutionary history in the United Kingdom is offered as a classic instructional tool for teaching the principles of natural selection.
Answer:
C
Explanation:
B) sucrose.
C) oxygen gas.
D) water vapor.
Answer:
The correct answer is D) water vapor.
Explanation:
During photosynthesis, plants make glucose from carbon dioxide and water with the help of sunlight. Respiration is opposite to photosynthesis in which the glucose is broken down into carbon dioxide and water.
Respiration occurs in both animals and plants which is required to provide energy to the system in the form of ATP. The carbon dioxide released during respiration is again taken by plants during photosynthesis to make glucose,
The reaction takes place during respiration is:
C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O + ATP
Therefore the correct answer is D) water vapor.
A lysosome is spherical membrane-bound organelle. In the lysosome, there are many hydrolytic enzymes which role is to break down different kind of molecules and components used by the cell. The pH inside of the lysosome is low (acidic: 4.5 - 5.0) which is optimal for enzymes. Also, there are substances involved in energy metabolism, cell signalling, etc.
Answer:
THE Answer IS C
Explanation:
b Hypotonic
c turgor pressure
d homeostatsis