Podcast
Questions and Answers
What type of receptors do steroid hormones and some amino acid-derived hormones utilize?
What type of receptors do steroid hormones and some amino acid-derived hormones utilize?
- Nuclear receptors
- Intracellular receptors (correct)
- Membrane-bound receptors
- Extracellular receptors
Why do lipid-soluble hormones like steroids require carrier molecules when traveling in the body fluids?
Why do lipid-soluble hormones like steroids require carrier molecules when traveling in the body fluids?
- To increase their solubility in water-based body fluids (correct)
- To reduce their reactivity with other molecules
- To facilitate transport through the hydrophilic environment
- To allow them to pass easily through the plasma membrane
Where does the activated hormone-receptor complex with high DNA affinity typically enter to initiate changes in DNA transcription?
Where does the activated hormone-receptor complex with high DNA affinity typically enter to initiate changes in DNA transcription?
- Nucleus (correct)
- Ribosomes
- Mitochondria
- Endoplasmic reticulum
What region of DNA is thought to be targeted by the hormone-receptor complex during gene regulation?
What region of DNA is thought to be targeted by the hormone-receptor complex during gene regulation?
What is the primary function of steroid hormones in terms of gene regulation?
What is the primary function of steroid hormones in terms of gene regulation?
How do steroid hormones exert their effects on genes within target cells?
How do steroid hormones exert their effects on genes within target cells?
What type of proteins are produced in response to hormones?
What type of proteins are produced in response to hormones?
Which invertebrates rely heavily on neuro-endocrine control systems?
Which invertebrates rely heavily on neuro-endocrine control systems?
Which substance is secreted by the rest of a Hydra's body if its head is removed?
Which substance is secreted by the rest of a Hydra's body if its head is removed?
In nematodes, where are the neuro-endocrine secretory structures associated with their nervous systems?
In nematodes, where are the neuro-endocrine secretory structures associated with their nervous systems?
Why do some nematode worms need up to four moults of their cuticle?
Why do some nematode worms need up to four moults of their cuticle?
What is the effect of the 'head activator' substance secreted by a Hydra?
What is the effect of the 'head activator' substance secreted by a Hydra?
