.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
...