ATP is the energy unit of cells. Specifically, what biological molecule is it?
protein
amino acid
glycogen
nucleotide
Chitin is most similar to __________.
cholesterol
cellulose
insulin
testosterone
Cigarette smoke is said to be carcinogenic because it causes mutations to form in the DNA. If DNA has a mutation, what other molecules will also become mutated?
RNA and proteins
sugar molecules and proteins
triglycerides and RNA
phospholipids and proteins
Carbon tends to form large molecules because of its capability to form ______ bonds with several other atoms.
ionic
organic
hydrogen
covalent
inorganic
Consumption of what type of fats helps you obtain a healthy ratio of LDL to HDL?
cholesterol
polyunsaturated fats with omega-3s
trans fats
monounsaturated fats
DNA is to nucleic acid as wax is to__________.
lipid
nucleic acid
cholesterol
protein
Four is to nucleic acids as ___________ is to proteins.
20
1
4
2
HDL is to LDL as testosterone is to _______.
lipoprotein
The Essay on Protein Synthesis Amino Acid
... the ribosomes where it is used to arrange amino acids into proteins. The DNA molecule in the nucleus is unzipped by an enzyme ... replaced with uracil. The formation of this molecule allows for the construction of proteins in the ribosome without risking the DNA in ... condon. When this happens the amino acid chain is released from the tRNA and is a protein. This process allows for the ...
cholesterol
triglyceride
protein
If a cell is unable to make RNA it will also be unable to make ___________.
protein
nucleic acids
triglycerides
glycogen
If your diet is deficient in glucose, it will be hard for you to make ______.
lipids
proteins
nucleic acids
glycogen
1If you isolate a polymer of nucleotides, the polymer is most likely ___________.
glycogen
nucleic acids
a protein
triglycerides
If you are able to isolate a molecule with a phosphate group, the molecule is most likely a(n) ____________.
RNA
triglyceride
protein
amino acid
If you isolate a fatty acid with one double bond, you know the fatty acid is a ________.
omega-3 fatty acid
saturated fat
polyunsaturated fat
monounsaturated fat
Many plants store their excess carbohydrates in the form of a polysaccharide called ______.
glucose
glycogen
starch
chitin
Nucleotides are used for several functions in cells. Which of the following is NOT a correct function for a nucleotide?
building plant cell walls
serving as a chemical carrier of energy
building ribonucleic acid (RNA)
building deoxyribonucleic acid (DNA)
Nucleotides are to DNA as ________ are to _________.
amino acids; proteins
carbon; fatty acids
fatty acids; carbohydrates
glycogen; starch
saturated fats; lipids
Nucleotides share structural similarity to _______.
steroids
proteins
amino acids
glycogen
Nucleotide is to nucleic acid as amino acid is to __________.
triglycerides
protein
glycogen
nucleic acids
Proteins differ from one another because ______.
of the host organism
the sequence of amino acids in the polypeptide chain differs from protein to protein
the number of nucleotides found in each protein varies from molecule to molecule
The Essay on Amino Acid Protein Supplements Body
... Two Animal Products vs. Two Protein Amino Acid Supplements The Protein and Amino Acid supplement make claims to build lean muscle ... and minerals are added to the protein supplements and also Amino Acids. Complete forms of amino acids are necessary to inner-case lean ... a healthy diet and exercise (especially weight training). Protein and Amino Acid supplement companies advocate eating 6-8 small healthy ...
each protein contains its own unique sequence of sugar molecules
the peptide bonds linking amino acids differ from protein to protein
Phospholipids are said to have a dual nature because they are ______.
Selected Answer: part hydrophilic and part hydrophobic
The color of your hair is determined by a _________, which is made based on instructions provided by _________.
protein; DNA
carbohydrate; proteins
nucleic acid; DNA
carbohydrate; DNA
lipid; DNA
Which of the following statements about hormones is true?
All hormones are proteins.
Some hormones are proteins and some are steroids.
All steroids are hormones.
All hormones are steroids.
While studying various cells under a microscope, you see one with very fragile membranes. This fragility is probably caused by a deficiency in the production of ______________.
protein
amino acids
triglycerides
phospholipids
Which functional group is found in amino acids?
amino only
both carboxyl and amino
hydroxyl only
carboxyl only
Which of the major types of biological molecules does NOT consist of monomers and polymers?
lipids
carbohydrates
nucleic acids
proteins
Which of the following statements about steroids is true?
The steroid estrogen is used by athletes to bulk up.
Cholesterol is not a steroid.
Testosterone is made only by men.
Estrogen is made by both men and women.
Which of the following statements is (are) true about carbon?
It can covalently bond with up to four other atoms.
It is used to create the molecules of life found in cells.
Its outer electron shell is not complete.
Carbon compounds form in many shapes.
All the above statements are correct.
Which of the following statements about HDL and LDL is true?
It is better to have higher levels of LDL than of HDL.
It is best to have equal levels of HDL and LDL.
Your levels of HDL and LDL are really not important enough to monitor.
It is better to have higher levels of HDL than of LDL.
The Essay on Biuret Test for Proteins and Emulsion Test for Lipids
... useful to determine if the sample has complex proteins or only the simpler amino acids. On higher concentrations and when there is ... the presence of proteins, a simple visual check for color change is enough. EMULSION TEST FOR lIPIDS The lipids are a large ... and water. ( This happens as hydrophobic portion of the lipid molecules project inwards and excludes the aqueous environment; the hydrophilic ...
Which of the following is an example of secondary structure of a polypeptide?
the way beta pleated sheets and alpha helixes fold around each other to give the protein its final shape
the amino acid sequence found in a protein
the formation of a beta pleated sheet
the interaction of many polypeptides that gives rise to the final protein
Which of the following statements about proteins is correct?
All enzymes are proteins but not all proteins are enzymes.
All proteins are enzymes, and all enzymes are proteins.
Proteins and enzymes are not related.
All proteins are enzymes, but not all enzymes are proteins.
Which of the following macromolecules function in energy storage?
only fats
both fats and carbohydrates
only proteins
only carbohydrates
Which of the following is a polymer?
any amino acid
chitin
glucose
a nucleotide
You isolate a cell that cannot bring information from the DNA to the ribosomes. What molecule is probably deficient in this cell?
RNA
protein
DNA
amino acids
1 You have a friend who lives on french fries eats almost nothing else. Realizing that french fries are mostly starch, you warn your friend that he might __________ as a result of this diet.
not be able to make glycogen
not be able to make proteins
not be able to make DNA
not be able to make lipids
Your doctor has told you to limit your intake of saturated fats. As an expert in biology you know that to have a healthier diet you should ______.
increase your consumption of polyunsaturated fats
eat mostly fats from plant products
eat only fats from animal products
ignore your consumption of trans fats
You isolate a polymer that contains adenine, guanine, and cytosine. What type of molecule could it be?
either RNA or DNA
protein
DNA only
RNA only
You eat a steak for lunch. What is the primary molecule you will be eating?
nucleic acids
lipids
protein
The Essay on Protein Synthesis Amino Acid 2
... contains the code for the order of the amino acids in a protein. It also carries this information from the DNA of ... , by far, is their use as enzymes to speed up the reactions in the body. Proteins contain the elements carbon, oxygen, hydrogen ... DNA into RNA. In this process the RNA uses the enzyme RNA polymerase, which shows the RNA where to start its ...
glucose
You eat a very large meal with lots of glucose. What will your body do with the glucose you do not require to meet your energy needs?
polymerize the glucose into glycogen
polymerize the glucose into lipids
excrete it in your urine
polymerized the glucose into proteins
You isolate a new protein composed of four separate protein chains. What level of protein structure would you say this protein achieves?
tertiary
folding
quaternary
primary
secondary
Your friend Paula tells you that her doctor said she needs more of the principal female steroid. The physician is referring to ___________.
cholesterol
estrogen
testosterone
triglycerides
You isolate a cell that cannot make RNA. The cell will therefore not be able to make _______.
nucleotides
lipids
proteins
DNA
You isolate a protein in which a change in the amino acids causes the protein to fold into pleats rather than coil into a helix. What level of protein structure has changed as a result of the amino acid change?
secondary structure
primary structure
tertiary structure
quaternary structure
You eat a carrot for lunch. What is the primary biological molecule group you will be eating?
nucleic acids
glucose
lipids
protein
