<p>Ok, if you answer a question please post another question.</p>
<p>An animal that has a high surface-area-to-volume ration of the body and takes in all the oxygen it needs through it’s outer epithelium is most likely which of the following?</p>
<p>A. A fish
B. An earthworm
C. A mammal
D. An insect
E. A snake</p>
<p>I’m not sure… I know the thyroid produces T3/T4 which are needed to maintain metabolism… and the adrenal medulla produces norepinephrine/epinephrine which causes the body to make more sugars and metabolize faster?</p>
<p>The thyroid gland, after being stimulating by thyroid-stimulating hormones from the anterior pituitary gland, is responsible for controlling metabolic rates. If an excess of thyroxine is produced, the metabolic rate is increased (hyperthyroidism - also results in nervousness). </p>
<p>The adrenal medulla is responsible for secreting (nor)epinephrine hormones which also increase metabolic rates in your body. For example, they increase heart rate, blood pressure, pupil dilation, constrict blood vessels, and even redirect blood flow to skeletomuscular parts for a “fight or flight” response.</p>
<p>Therefore, the thyroid gland and adrenal medulla are related because they can both be involved in increasing metabolic rate. </p>
<p>To observe the process of mitosis in plant root cells, a biologist should examine the plant’s
A) root hairs
B) Casparian strip
c) root cap
d) zone of maturation
e) apical meristem</p>
<p>:D</p>
<p>And, for added bonus of review, differentiate between the sympathetic and parasympathetic nervous systems.</p>
<p>Also, the sympathetic nervous system and parasympathetic nervous systems are both offshoots of the autonomic nervous system (offshoot from peripheral). The SNS is related to “fight or flight” responses which increase heart rate, blood pressure, pupil dilation, etc., while the PNS works antagonistically to return the body to homeostasis.</p>
<p>I don’t know. I’d say the answer is E because active cell division occurs at the apical meristem. Don’t forget that stems also have apical meristems, and stems obviously do not have root caps.</p>