Answer:
Ο Α.
Sensory receptors in the skin detect the stimuli from the environment.
Explanation:
Simple process of elimination. Keratin is what makes up hair and nails. Muscles cannot detect temperature change, and connective tissue can't either. The sensory receptors that detect heat and cold are called thermoreceptors
Answer: A. True
Explanation: Cell receptors are proteins that receive signals and trigger a signal cascade for the cell can respond. There's many types of receptors, depend of their location and their enzymatic activity, and each type can recognize certain signals. For example, tyrosine-kinase receptors can recognize growth factors, JAK associated receptors can recognize cytokines, etc. That specificity is given by the structure of the receptor and the structure of the signal.
MRNA: AUG-GUA-AAC-CGC-UAG
Protein: Met-Val-Asn-Arg-stop
<span>DNA exists in a coiled form in order for it to take up a smaller volume in the cell so that is why the first thing is that it needs to be unwound by topoisomerase. Then each piece is made up of two strands that must be separated as they need to be copied separately, so next the helicase unzips the DNA. DNA polymerase needs to have something to build off so because DNA can be synthesized, the Primase needs to make an RNA "primer". DNA is then synthesized but because it cannot synthesize the whole chromosome in one piece, after DNA synthesis, the ligase must glue the shorter pieces together to make the entire chromosome.
Correct Order
1. Topoisomerase unwinds the coiled DNA
2. Helicase unzips DNA to separate strands
3. Primase lays down short RNA strands
4. Polymerase synthesizes new DNA strands
5. The new strands are glued using ligase</span>
