Answer:
1) As the body's chemical messengers, <u>hormones</u> transfer information and instructions from one set of cells to another.
2) A <u>gland</u> is a group of cells that produces and secretes, or gives off, chemicals.
3) Hormones are released into the bloodstream via small tubes called <u>duct.</u>
4) Hormones find their way through the blood to their <u>targeted/respective </u>cells.
5) Each hormone is a differently shaped key that will only fit into the correct <u>receptor</u> lock.
Answer:
a closed circulatory system.
Explanation:
an earthworm circulates blood exclusively through vessels.
It is The multicellular part
The correct answers to fill into the blank spaces are;
<h3>What is wave?</h3>
Wave is a periodic <u>disturbance</u> that moves away from a source which carries <u>energy</u> with it. Waves can be typified according to the <u>direction</u> of motion of the vibrating particles with respect to the direction in which the waves travel and according to <u>medium</u> .
<u>Longitudinal</u> waves vibrate perpendicularly to the direction in which the waves travel. This wave exhibits up and down motion. Longitudinal waves vibrate <u>perpendicular</u> or back and forth to the direction in which the waves travel.
<u>Electromagnetic</u> waves are combination of transverse and longitudinal waves. These move in a circular pattern as the waves pass by.
<u>Mechanical</u> waves need solid, liquid and gas medium to propagate or travel. Transverse, mechanical and surface waves are examples of mechanical waves.
Electromagnetic waves do not need <u>medium</u> to propagate. Radio waves, ultraviolet, infrared, and gamma rays are examples of <u>electromagnetic</u> waves. The nature of waves can be described through its terms, quantities and <u>propagation</u>.
The <u>crust</u> and trough refer to the highest point and lowest point of a wave pattern, respectively. The <u>magnitude</u> of a transverse wave is the maximum displacement of a particle of the medium on either side of its normal position when the wave passes. The frequency of periodic waves is the number of waves that pass a particular point for every one second while the <u>Amplitude</u> is the distance between adjacent crests or troughs.
The period is the time required for one complete wave to pass a particular point. The <u>speed</u> of the wave refers to the distance the wave travels per unit time. It is related to the frequency of the wave and wavelength through the following equation: wave speed= frequency x wavelength.
Read more on waves;
brainly.com/question/15531840
The cyclic adenosine monophoaphate, or the cAMP is a second messanger for multiple biological processes. The glucose, sugar and lipid metabolism is regulated by the cAMP or cyclic adenosine monophosphate. Itis the derivative of the ATP (Adenosine Triphosphate), and used for the purpose of the signal transduction. Besides this, the brain function is also affected by the cAMP.