A community is where a group of people live really close by vs. a population counts how many people live in a area
Answer:
What can be inferred about the evolution of the cranium and the vertebral column from examining hagfishes and lampreys? Comparison of hagfishes with lampreys shows that the cranium evolved first in early vertebrates, as it is seen in hagfishes, which evolved earlier than lampreys.
Explanation:
I hope this helps!
The different degrees of sleep and wakefulness through which newborns cycle, ranging from deep sleep to great agitation, are called states of arousal. These states are regular sleep, irregular sleep, drowsiness, quiet alertness and crying. About eight to nine hours each of an infant's day is dedicated to regular and irregular sleep. So, most of the time of the infant is spent in these states. These are the states where the brain of an infant is developing the important connections for growth and survival. Crying is the means for infants to communicate their needs. Different type of cries would represent different needs of the infant.
Only lymphocytes possessing receptors that can bind with the antigens on an invading pathogen are involved in the immune response against it.
<h3>Are receptors and antibodies the same?</h3>
B cell receptor refers to an immunoglobulin molecule which serves as a type of trans membrane protein on the surface of B cells while an antibody refers to a blood protein that the B cells produce in response to and counteracting a specific antigen.
Thus, this is the main difference between B cell receptor and antibody.
<h3>What is the purpose of the antigen receptor?</h3>
Its function is as a receptor that recognizes and binds antigen by the V regions exposed on the surface of the cell, thus transmitting a signal that causes B-cell activation leading to clonal expansion and specific antibody production.
Learn more about receptors and antigens here:
<h3>
brainly.com/question/25510938</h3><h3 /><h3>#SPJ4</h3>
