Which of the following are properties of steroid hormones?

I) Steroid hormones are lipid soluble and easily cross the phospholipid bilayer.

II) Steroid hormones usually exert their effects on target cells through membrane receptor proteins.

III) Steroid hormones act on cells close to where they were produced.

IV) Steroid hormones regulate gene transcription by binding to intracellular receptor proteins.

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#Question id: 745

#Unit 1. Molecules and their Interaction Relevant to Biology

The structure of RNA differs from that of DNA, as RNA contains:

TLS Online TPP Program

#Question id: 11464

#Unit 1. Molecules and their Interaction Relevant to Biology

Green fluorescent protein consists of a chain of 238 amino acid residues. The light-emitting group is a derivative of three consecutive amino acids are

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#Question id: 3736

#Unit 3. Fundamental Processes

What is the DNA sequence (5ʹ → 3ʹ) determined in this gel sequenced by Sanger's methods? Assume the samples were applied near the top of the gel.

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#Question id: 8691

#Unit 9. Diversity of Life Forms

Use the following information to answer the question.

Applying the principle of parsimony to the trait "ability to fly," which of the two phylogenetic trees is better?

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#Question id: 18763

#Unit 13. Methods in Biology

Which of the following occurs between particular short sequences present on otherwise dissimilar parental molecules?