The correct answer is letter b. adrenaline secreted by the adrenal glands.
The heart pumps harder and blood pressure rises during a fight-or-flight response. This response is due to adrenaline secreted by the adrenal glands. Adrenaline is <span>a substance that is released in the body of a person who is feeling a strong emotion.</span>
A spring surface. hope that helped
Answer:
The preferable option will be - E.
E. A platyhelminth has the largest surface-area-to-volume ratio.
Explanation:
Platyhelminth :
- They have soft bodies.
- Their body is bilaterally symmetrical.
- They are free-living.
- Some of them are marine species and others live in freshwater or moist transitional environments.
- At the anterior part of their body, possesses their mouth.
- Their organ is situated along their body size.
- They are divided into four classes such as : Turbellaria, Monogenea, Trematoda, and Cestoda.
- E.g, flatworm, tapeworm, monogenea, flukes etc.
Answer:
- Hemoglobin
- Blood
Explanation:
Since Anne is 19th century scientist, she would use conservative or classical methods of detecting blood traces on a glass at a crime scene because disovery of DNA was still not done. In 1853, Dr. Teichmann developed a test (also known as Teichmann test) that aim to crystallize haemoglobin when it is heated with glacial acetic acid. Since blood as haem group (hemin) and any surface that has traces of blood would react with glacial acetic acid and form crystals which can be then detected. This was one of the breakthrough discovery of that time.
Answer:
option A IS THE ANSWER : jellyfish, sea anemones, and sponges
Explanation:
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