Humans belong to which of the following domains?
A) Bacteria
B) Archaea
C) Eukarya
D) vertebrates
C
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The sense of pain is one of the most important of all the senses. Nociception is critical to survival because
_____ signals from nociceptors trigger memories and emotions associated with pain. _____ the activation or inhibition of enzymes are triggered by nociceptors in the brain. _____ pain triggers behavioral responses that protect from further danger. _____ signals from nociceptors tell an animal whether it has been injured and increase alertness and arousal.
What cellular structure is unique to plant cells and some photosynthetic fungi?
a. nucleus b. vacuoles c. chloroplasts d. mitochondria e. endoplasmic reticulum
Antimicrobial agents usually work best at high temperatures and high pH levels.
Answer the following statement true (T) or false (F)
An ionic bond between two atoms is formed as a result of the ______________
(a) sharing of electrons. (b) loss of electrons from both atoms. (c) loss of a proton from one atom. (d) transfer of electrons from one atom to the other.