The right answer is a. they contain many small, repeating subunits bonded together.
In chemistry and biology, a polymer is a molecule made up of a chain of similar molecules, called monomers; a polymer is a macromolecule resulting from the assembly of many identical units (monomers), a chemical compound with repetitive structural units.
DNA, glycogen and proteins are polymers
Answer:
Schwann cells or neurilemma cells are the cells which form the myelin sheath around neuronal axons in the peripheral nervous system (PNS) only.
Neurilemma is the collective term used for cytoplasm and nuclei present around the myelin sheath which helps in the regeneration process of nerves.
A Schwann cell surrounds the axon, invaginate it and the plasmalemma of the Schwann cells joins and from a double membrane structure called mesaxon. This mesaxon starts wrapping the axon in spiral fashion and cytoplasm start condensing into the compact myelin sheath.
Answer:
Explanation:The Photosystems are the functional centers of photosynthesis. The pigments, such as chlorophyll, in the photosystems absorb light energy, which excites electrons. These electrons are transferred to electron-accepting molecules, eventually producing ATP and NADPH.
Answer:
<u>State</u> anxiety is the actual experience of apprehension and uncontrolled arousal and <u>trait</u> anxiety is a personality characteristic, which represents a latent disposition to perceive situations as threatening.
Explanation:
<u>State anxiety:</u> It is basically a "right now" feeling which changes from moment to moment, manifesting itself as an interruption of an individual's emotion state, leading to a sudden superversion of emotional equilibrium, caused by external factors of current state. e.g An atheletes emotional state at any given time that is variable from situation to situation.
<u>Trait anxiety:</u> It is a personality disposition which is stable over time. e.g An atheletes disposition to interpreting a situation as threatning and responding with an increase in state anxiety.
Carbon and nitrogen and an important element of living things. Nitrogen is a major component of DNA and amino acids while carbon can be found in almost all biomolecules. These elements, therefore, need to be renewed and recycled as they are utilized by ecosystems that is ever dynamic.
