The importance of attachments between cells and with the extracellular matrix is reflected by the fact that between 1% and 5% of the human genome consists of genes responsible for these attachments
A. true
B. false
B
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Although it is too simple an explanation, the concept of a key fitting into a lock is descriptive of the:
a. inhibition of enzymes by small molecules b. fit of coenzymes to enzymes c. matching of enzyme with substrate d. regeneration of ATP from ADP e. stepwise cascade of electrons in the oxidation-reduction reactions
__________ relay signals between neurons. Fill in the blank(s) with the appropriate word(s)
If a parent cell has 16 chromosomes and undergoes meiosis, each of the resulting cells will have how
many chromosomes? a. 64 b. 32 c. 16 d. 8 e. 4
The primary difference between enhancers and promoter-proximal elements is that enhancers _____
A) are transcription factors; promoter-proximal elements are DNA sequences B) enhance transcription; promoter-proximal elements inhibit transcription C) are at considerable distances from the promoter; promoter-proximal elements are close to the promoter D) are DNA sequences; promoter-proximal elements are proteins