.The cell constantly exchanges materials by bringing nutrients in from the external
environment and shuttling unwanted by- products back out. Which terms describes the
process of by which internal materials are transported toward extracellular space of the
cell?

exocytosis

Src is one of the well characterized ________.

tyrosine kinase

Transcription is a process of generating mRNA by using dNTPs

False

(Transcription is the first step of gene expression, in which a particular segment of
DNA is copied into RNA (especially mRNA) by the enzyme RNA polymerase not
dntp)

Replication is a process of generating mRNA.

False

Replication is a process of generating more DNA

________ is the organelle physically connected to the nucleus.

Endoplasmic reticulum

Ester bond forms between

alcohol and acid

Which of the following statements is false?

GTP can be hydrolyzed to release energy to power hundreds of cells

The potential energy stored in high – energy bonds are commonly harnessed when
the bonds are split by the addition of _______ in a process called __________.

water, hydrolysis

The pK of amino acid X is 4. When [A^-] /[AH] is 100, what is the pH? (Help: pH = pK +
log [A^-] /[AH])

6

.Where areas ionic bond form a ( ), covalent bonds between atoms form a molecule.

salt

Many types of cells have stores of lipids in their cytoplasm, usually seen as fat
droplets. What is the lipid most commonly found in these droplets?

triacylglycerol

The side chain of amino acid R is