Portage_Learning_Chem_210 All modules Exams and problems with Correct Answers

Question 1 0 / 0 pts Name three different functions of proteins. Transport, hormones, catalysis, structure, and protection Question 2 0 / 0 pts What function does a protease have? catalysis. It degrades proteins. Question 3 0 / 0 pts What is the function of hormones? These proteins communic...

Which of the following monosaccharides is a ketose? Dihydroxyacetone Galactose Glucose Glyceraldehyde Idose Dihydroxyacetone Question 2 3 / 3 pts When two carbohydrates are epimers: One is a pyranose, the other a furanose One is an aldose, the other a ketose They differ in length by one ...

Glycerol contains how many alcohol functional groups? 1 2 3 4 None of the above 3 Question 2 3 / 3 pts Which of the following are derived from or made from fatty acids? Cholesterol Carotenoids Phosphoglycerides Both A and B Both A and C PHOSPHOGLYCERIDES Question 3 3 / 3 pts Triacy...

Question 1 3 / 3 pts In RNA, guanine always pairs with . Thymine Guanine Cytosine Uracil Both A and B CYSTOSINE DNA is built from which of the following? Nucleosides Genes Purines Nucleotide Codons NUCLEOTIDE The Z-form helix of DNA is stabilized mainly by . Ionic bonds Covalent bon...

What is the difference between a nucleoside and nucleotide? A nucleoside is formed from the covalent bonding of a base, purine or pyrimidine, to either ribose or 2-deoxyribose. Nucleotides are built from a nitrogen-containing organic base, a monosaccharide, and phosphate. Question 2 0 / 0 pts W...

Question 1 3 / 3 pts True or False: The ΔG value for a particular reaction is -78kJ/mol. This value indicates the reaction is NOT spontaneous. FALSE Question 2 3 / 3 pts True or false: A biochemical metabolic pathway is a single reaction that converts starting material into products. FALSE ...

A scientist uses the term flux regarding a biochemical pathway. What does flux mean? Flux is the rate of flow through a biochemical pathway. Question 2 0 / 0 pts A particular pathway breaks down proteins into amino acids. Is this an anabolic or a catabolic pathway? Catabolic. This is degradatio...

True or False: Nitrogen is called the superglue of the chemical world. FALSE True or False: Large elements, such as strontium, are common in biomolecules. FALSE True or False: The time it takes for a compound to flow through a metabolic pathway is called the payoff phase. FALSE True or False: Pr...

True or False: According to the Module, a compound with a molecular mass of 3,000 g/mol is considered a macromolecule. FALSE Question 2 3 / 3 pts True or False: Biomolecules can have only two functional groups. FALSE Question 3 0 / 3 pts True or False: The following functional group is an ami...

What are three ways that biochemists study biological organisms? Biochemists study 1) the relationship between structure and function ofbiomolecules, 2) chemical reactions of organisms (metabolism) 3) 3) communication within and among organisms. Question 2 0 / 0 pts What is the definition of bi...

What is the shape of water? Bent. The bond angle is 104.5 degrees. What is autoionization, and how is it important for water? Autoionization is the ability of a compound to react with itself to form ions. One water molecule reacts with a second molecule to form two ions: H3O+ and OH-. These ions...