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MACROMOLECULES BACE PREP TEST QUESTIONS AND ANSWERS

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MACROMOLECULES BACE PREP TEST QUESTIONS AND ANSWERS....

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MACROMOLECULES BACE
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MACROMOLECULES BACE

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March 20, 2025
Number of pages
83
Written in
2024/2025
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  • bace
  • bace prep test

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Lipid - ANSWER Structural component of cell membrane, Ex: Phospholipid

Covalent bond - ANSWER A chemical bond that involves the sharing of
electron pairs between atoms.

Using too low temp. - ANSWER What is the most likely reason there is an
unexpected band in a PCR reaction?

Molecular weight marker and DNA Ladder - ANSWER What should be
included on the gel to enable you to determine actual sizes of the DNA
fragments?

What the order of amino acids on a polypeptide chain is encoded by -
ANSWER What is MRNA?

Function of Quality Assurance (QA) personnel? - ANSWER Who has final say
if a production batch may be released for sale or use?

The 3D structure of DNA is revealed. - ANSWER What contributed to
biotechnology in the 1950's?

Solid media on which bacteria grow - ANSWER What is agar?

R group - ANSWER What part of an amino acid differs from one to the other?

,Occurs when amino acid sequence is linked by hydrogen bonds. - ANSWER
What is secondary protein structure?

Form tetra relevant bonds, highly stable/unstable, able to form short and long
chains - ANSWER What are the properties of the carbon atom that make the
diversity of carbon compounds possible?

Unbranched - ANSWER A polypeptide is an ___ chain of amino acids

Hydrophobic - ANSWER Are lipids hydrophilic or hydrophobic?

Carbohydrate - ANSWER Structural component of plant cell walls, Ex:
Cellulose

Protein - ANSWER Catalyze biochemical reactions, Ex: Enzyme

Nucleic Acid - ANSWER Store and transfer genetic information in the cell, Ex:
RNA

The nucleotide strands of DNA are oriented in opposite directions in a structure
that is described as - ANSWER What is antiparallel DNA?

Restriction enzyme - ANSWER An enzyme that cuts DNA after recognizing a
specific sequence of DNA.

Phospholipid - ANSWER Form the phospholipid bilayer of the plasma
membrane.

Antibody - ANSWER Identify and neutralize foreign objects such as bacteria
and viruses.

Actin/Myosin - ANSWER Rules over cell functions which include cell
division, morphing of the shape of the cells, cell mobility and other contractile
properties/Helps in muscle contraction

Enzymes lose function outside of a narrow pH range - ANSWER Why are
enzyme solutions always prepared using a buffered solvent at a specific pH?

,20 - ANSWER How many amino acids are there?

Leads to increase in high energy collisions. - ANSWER Why does the rate of a
chemical reaction increase with increasing temperature?

Concentration of reactants, heat, the presence of a catalyst - ANSWER What
affects rate of chemical reaction?

Cellular respiration - ANSWER Converts energy into ATP; take place in
mitochondria

Aerobic respiration - ANSWER Cellular energy with oxygen

Anaerobic respiration - ANSWER Cellular energy without oxygen

Process where a single cell divides twice to produce four cells containing half
the original amount of genetic information (sex cells). They go through mitosis.
- ANSWER What is meiosis and what happens if it does not happen during
sex-cell development in plants?

What is the purpose of SDS when used in SDS electrophoresis? - ANSWER
Denature proteins and give them negative charge

Haploid: One set of chromosomes; gametes
Diploid: Two sets of chromosomes; somatic cells
Zygote: 2 haploid gametes fuse during fertilization to form a diploid cell
(zygote) - ANSWER Whats difference between diploid/haploid/zygote?

Same as parent; 46 - ANSWER After a mitotic division, how many
chromosomes do daughter cells have compared with the parent cell?

Alleles - ANSWER Alternative forms of a gene that arise by mutation and are
found at the same place on a chromosome.

Diploid - ANSWER Are humans diploid or haploid?

, Translation and Transcription - ANSWER Genes encode for proteins. During
translation, MRna encodes a blueprint to make the proteins. In transcription,
DNA makes complimentary RNA.

Semiconservative replication - ANSWER The replication of DNA, in which
each original strand of DNA serves as a template for a new strand, is called:

A technique used in molecular biology to amplify a single copy or a few copies
of a piece of DNA across several orders of magnitude - ANSWER What is
polymerase chain reaction?

Polymerase and Ligase - ANSWER Enzymes involved with in vivo DNA
replication, and which are also used as tools in biotechnology include:

Uracil - ANSWER DNA does not contain base pair

Purines - ANSWER Adenine and guanine

Pyrimidines - ANSWER Thymine and cytosine

DNA Polymerase - ANSWER (PCR) requires what enzyme to be thermostable
(resistant to high temperatures) in order to "amplify" a sample of DNA?

Ligase - ANSWER If you think of recombinant DNA technology as cutting and
pasting pieces of DNA, which molecule represents the glue?

An operon consists of a group of structural genes that code for enzymes
involved in a metabolic pathway. They are under control of a promoter (a short
segment of DNA to which the RNA polymerase binds to initiate transcription)
and regulated by an operator. - ANSWER Bacteria cell DNA is divided into
operons. Describe an operon using the terms promoter, operator, and structural
gene.

Hydrogen bonding - ANSWER Complimentary base pairing holding two DNA
strands together is due to:

Cell membranes and endoplasmic reticulums - ANSWER What are
phospholipids found in?

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