Does the cell membrane provide a rigid structure?
Does the cell membrane provide a rigid structure?
Because the interior of the phospholipid bilayer is occupied by hydrophobic fatty acid chains, the membrane is impermeable to water-soluble molecules, including ions and most biological molecules. Because of its rigid ring structure, cholesterol plays a distinct role in membrane structure.
What does every cell have in common?
All cells share four common components: (1) a plasma membrane, an outer covering that separates the cell’s interior from its surrounding environment; (2) cytoplasm, consisting of a jelly-like region within the cell in which other cellular components are found; (3) DNA, the genetic material of the cell; and (4) …
What are the 4 cell theory?
Modern interpretation All living cells arise from pre-existing cells by division. The cell is the fundamental unit of structure and function in all living organisms. The activity of an organism depends on the total activity of independent cells. Energy flow (metabolism and biochemistry) occurs within cells.
Which is the smallest part of brain?
The midbrain is the smallest region of the brain, and is located most centrally within the cranial cavity. Limbic System – the limbic system is often referred to as our “emotional brain”, or ‘childish brain’. It is found buried within the cerebrum and contains the thalamus, hypothalamus, amygdala and hippocampus.
What is the small brain called?
Cerebellum
Which is the largest part of human brain * 1 point?
The cerebrum hemisphere is considered to be the largest part of the brain and it consists of two cerebral hemispheres with four lobes: frontal lobe, parietal lobe, occipital lobe and temporal lobe.
Which is the second largest part of the brain?
cerebellum
Is the brain stem part of the brain?
Though small, the brainstem is an extremely important part of the brain, as the nerve connections from the motor and sensory systems of the cortex pass through it to communicate with the peripheral nervous system. The brainstem consists of the medulla oblongata, pons, and midbrain.