Sarah and jane were playing basketball. they collided and fell. sarah’s knee was lightly bruised. jane’s elbow was scratched, causing a little blood to ooze out. after a few days, jane observed pus formation around the scratch on her elbow, while sarah’s knee was fine. the pus formation on jane’s elbow is a result of . the receptors on the sensed the pain that jane experienced. nextreset

1. The pus formation on Jane’s elbow is a result of: Inflammation

2.  The receptors on the sensed the pain: Cutaneous receptors of dermis

Explanation:

The inflammatory reaction is a non specific immune response against the entry of pathogen or any damage to tissues caused by physical or chemical factors. It includes the arrival of phagocytes at the site of infection to kill the entered pathogen. The pus includes the dead pathogens, dead tissue cells and some cells of the immune system. Hence, pus was formed on Jane's elbow as a result of the inflammatory response against tissue damage.  

Some of the cutaneous receptors present in the dermis of skin serve as pain receptors. The pain experienced by Jane is actually sensed by pain receptors present in the dermis of the damaged region of the elbow.  

answer: a) a compound microscope has a greater magnification ability than a simple microscope.

explanation:

step 1: initiation

initiation is the beginning of transcription. it occurs when the enzyme rna polymerase binds to a region of a gene called the promoter. this signals the dna to unwind so the enzyme can ‘‘read’’ the bases in one of the dna strands. the enzyme is now ready to make a strand of mrna with a complementary sequence of bases.

step 2: elongation

elongation is the addition of nucleotides to the mrna strand. rna polymerase reads the unwound dna strand and builds the mrna molecule, using complementary base pairs. there is a brief time during this process when the newly formed rna is bound to the unwound dna. during this process, an adenine (a) in the dna binds to an uracil (u) in the rna.

step 3: termination

termination is the ending of transcription, and occurs when rna polymerase crosses a stop (termination) sequence in the gene. the mrna strand is complete, and it detaches from dna.