How does a cell bind with a hormone molecule?
a. It increases its receptor levels.
b. Cells circulate through the body looking for hormones to which they can bind.
c. Molecules in the cell membrane have a binding site that matches a binding site on the hormone.
d. It decreases its receptor levels.
c. Molecules in the cell membrane have a binding site that matches a binding site on the hormone.
Molecules in the cell membrane have a binding site that matches a binding site on the hormone.
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Nurse cells
A. transcribe bicoid mRNA and then transport it to the embryo. B. translate bicoid mRNA into protein. C. induce the embryo to transcribe and translate bicoid mRNA. D. transport Bicoid protein to the embryo. E. translate bicoid mRNA into protein and transport the protein to the embryo.
Why do the purple bacteria occupy a thinner layer of the mat that than the green and the cyanobacteria?
What will be an ideal response?
The main shaft of a long bone is known as the epiphysis
____________________ Indicate whether the statement is true or false.
Some applications in biology, such as polymerase chain reaction (PCR), require melting the DNA double helix into single strands of DNA. This can be accomplished by heating the DNA. As DNA is heated, why does the double helix structure denature into single strands of DNA but not into individual nucleotides? In other words, why do the single strands remain intact even though the double helix does not?
A. The double helix structure is important for DNA replication, while the single strands carry the information. B. The single strands are wrapped around histones, which protects them from denaturing. C. The double helix is held together with phosphodiester bonds, while the single strands are linked by hydrogen bonds. D. The double helix is held together with hydrogen bonds, while the single strands are linked by phosphodiester bonds.