To detect predators by using the large size and flexible positioning of the external ears to channel sound waves into the ear canal.
<h3>What is thermoregulation ?</h3>
Mammals regulate their body temperature carefully and independently of their environment through a process called thermoregulation. A method of maintaining a constant internal temperature necessary for survival is temperature regulation.
- Poikilothermy and homeothermy are the two main reactions to changing environmental temperatures (TA) that animals display.
- Progesterone tends to promote heat conservation and higher body temperatures, whilst estradiol tends to increase heat dissipation, and both hormones have an impact on thermoregulation both centrally and peripherally.
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The correct option is B.
For a mature woman, each month the increased level of estrogen hormone leads the pituitary gland to secrete luteinizing hormone. Once this hormone is secreted, the ovary releases a single egg which moves down to the lining of the uterus. If fertilization does not occur, the egg is shed together with the lining of the uterus in a monthly process called mensuration. If fertilization occur, then the fertilized egg attach to the lining of the uterus and placenta is formed. The fertilized egg then send signal to the ovary to keep secreting progesterone, which will sustaining the pregnancy by keeping the uterus lining thick and nourishing for the developing embryo.
<span><span>What is the distance covered by a vehicle
moving in a straight line during 20 s if the vehicle changes its speed from 10
m/s to 16 m/s during that time interval? In order to calculate the distance of
the boat we first have to identify the suited formula for acceleration in this
scenario. </span>
<span>Hence, a = vf – vi / t. Vi = 10 m/s Vf = 16 m/s T
= 20 seconds </span>
<span>Solution: </span>
distance = velocity x time</span>
Distance = 16 + 10 m/s / 2 x 20 seconds
Distance = 260 meters
According to the research, the correct option is They bind to intracellular receptors. Steroid hormones are lipophilic this allows steroid hormones to bind to intracellular receptors.
<h3>What are
Steroid hormones?</h3>
They are lipids with a polycyclic structure from which different compounds are derived that are relevant to biology and interact with intracellular nuclear receptors.
Steroids are lipophilic hormones that are found in nature and can easily enter the cell, cross the cytoplasm and reach the nucleus, exerting their action by binding to intracellular receptors, although they can also be synthesized in laboratories.
Therefore, we can conclude that according to the research, the correct option is They bind to intracellular receptors. Steroid hormones are lipophilic this allows steroid hormones to bind to intracellular receptors.
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