Answer:
Because older cultures of gram-positive bacteria tend to lose their ability to retain crystal-violet in the peptidoglycan of their cell walls and can be confused with gram-negative bacteria.
Explanation:
Gram staining is used to differentiate between two major groups of bacteria. Gram-positive and gram-negative, these bacteria differ in the amount of peptidoglycan in their cell walls. Gram-positive bacteria have a higher amount of peptidoglycan, which absorbs the violet crystal complex used in gram staining, staining them purple/violet. Old cultures of gram-positive bacteria tend to lose the ability to retain the violet crystal and are stained by safranine, staining them red/pink and appear to be gram-negative.
Answer:
A pain receptor detects the shard a glass (the stimuli) and triggers an electrical impulse along the sensory neurone. The electrical impulse reaches a synapse and neurotransmitters diffuse across the gap, triggering an electrical impulse along a relay neurone in the spinal cord. The electrical impulse reaches a synapse and neurotransmitters diffuse across the gap, triggering an electrical impulse along a motor neurone to the leg muscles (the effector). This causes the muscles to contact and lift your foot
Answer:
B. are complicated, larger, and have DNA captured in a membrane-bound structure.
Explanation:
DNA is found in the nucleus of the cell that is membrane bound structure.
Answer:
There is no way around it: food production must become sustainable. Norway is striving to do its share with the help of ground-breaking technology. Sustainable development
