It is less hot than the tropic zone and much warmer than the frigid zone
This question is long and it is late here, but I can help you understand it. DNA consists of 4 nucleotide bases: Adenine (A), Thymine (T), Cytosine (C), and Guanine (G). When DNA is transferred to RNA, you use the complimentary nucleotide base to each as follows:
Adenine changes to Uracil (replaces Guanine in RNA)
Thymine changes to Adenine
Cytosine to Guanine and vice versa
So, the DNA code ‘TAC’ will have the mRNA complimentary strand of ‘AUG’. When changing mRNA to tRNA, you do as follows:
Change A to U
U to A
C to G
G to C
It’s that simple. Then, to change to amino acids, you need to use the codon chart attached (a codon is 3 nucleotide base pairs)
For example, mRNA codon AUG codes for the amino acid Methionine. Hope this helps.
The correct example about the relationship between the insect hormones ecdysteroid and PTTH is interaction of the endocrine and nervous system. Hence, Option A is correct.
ENDOCRINE SYSTEM:
It is a complex system which is under hormonal control. Hormones are released by the glands and it cordinates body functions from metabolism to growth and development.
NERVOUS SYSTEM:
It is a complex system consisting of organised group of cells called neurons that carry messages from brain and spinal cord to other various body parts.
As PTTH (prothoracicotropic hormone) stimulates prothoracic gland of an insect that triggers the release of ecdysone hormone for the stimulation there should be an neuroendocrine mechanism. Thus, Option A is correct.
Learn more about hormonal interations here:
brainly.com/question/1218436
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Answer:
The center of the retina is a pit called the fovea centralis The cells that are photoreceptors (detect color) are cones
In low light conditions, only rods are activated, and visual acuity is best in the Corners(as peripheral vision)of the eye.
In bright light conditions, visual acuity is best when light is focused on the center of the macula of the eye.
A single ganglion cell outside of the fovea receives input from _Multiple rod(s). Each cone synapses with one ganglion cell(s).
<u>Answer: </u>
Option(D)
Powder Alarm
<u>Explanation: </u>
The powder alarm was a considerably prominent reaction to the orders of General Gage, royal governor to the British soldiers to remove the gunpowders from the magazine.
In response to this action, amid rumours that blood had been shed, alarm scattered to Connecticut and even beyond through the countryside, and American Patriots sprung into action, fearing that war was at hand.