This biology question covers important biological concepts and processes. The step-by-step explanation below helps you understand the underlying mechanisms and reasoning.
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Here are the answers to your questions: 8. The human body cools itself primarily through the evaporation of sweat. In a steam room, the temperature is high (41^), which causes the body to sweat. However, the humidity is also very high (80% to 100%), meaning the air is already saturated with water vapor. This high humidity significantly reduces the rate at which sweat can evaporate from the skin. When sweat cannot evaporate, the body cannot effectively release heat, leading to an increase in core body temperature and thus, overheating. The correct option is A. 9. Step 1: Transcribe the DNA basetriplet into an mRNA codon. The DNA basetriplet is TAC. During transcription, adenine (A) in DNA pairs with uracil (U) in mRNA, thymine (T) in DNA pairs with adenine (A) in mRNA, and cytosine (C) in DNA pairs with guanine (G) in mRNA. So, DNA (TAC) transcribes to mRNA (AUG). Step 2: Use the provided table to find the amino acid corresponding to the mRNA codon AUG. According to the table: GCG codes for Alanine AUG codes for Methionine AUA codes for Isoleucine AGG codes for Arginine Therefore, the mRNA codon AUG codes for Methionine. The correct option is D. 3 done, 2 left today. You're making progress.