A sequence of three nucleotides on DNA is a

codon; a single amino acid in the protein to be made

triplet; the entire protein to be made

triplet; a single amino acid in the protein to be made

codon; gene

Answer and Explanation

The Correct Answer is C

A. codon; a single amino acid in the protein to be made: A codon is a sequence of three RNA nucleotides, not DNA. Codons are found in mRNA during translation.
B. triplet; the entire protein to be made: A triplet codes for one amino acid, not the entire protein.
C. triplet; a single amino acid in the protein to be made: In DNA, a triplet is a group of three nucleotide bases that codes for a single amino acid during protein synthesis.
D. codon; gene: A codon (in mRNA) corresponds to one amino acid, not an entire gene.

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Correct Answer is A

Explanation

A. positively charged; cations: Sodium (Na), potassium (K), and calcium (Ca) are metals that lose electrons, becoming positively charged ions, called cations.
B. negatively charged; cations: Cations are always positive. A negative ion is an anion.
C. positively charged; anions: The term anion refers to a negatively charged ion, not a positive one.
D. negatively charged; anions: These elements do not gain electrons-they lose them and do not become anions.

A. eicosanoids B. fat soluble vitamins C. phospholipids D. fats E. steroids

Correct Answer is E

Explanation

A. eicosanoids: Eicosanoids (like prostaglandins) are derived from arachidonic acid, not cholesterol.
B. fat soluble vitamins: These are vitamins A, D, E, and K, which are lipids but are not cholesterol-based structures.
C. phospholipids: Phospholipids have a glycerol backbone, fatty acids, and a phosphate group, not a steroid ring structure.
D. fats: Fats (triglycerides) are made of glycerol + three fatty acids, not cholesterol.
E. steroids: Steroids include cholesterol, testosterone, estrogen, and other hormones with a four-ring carbon backbone.

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A sequence of three nucleotides on DNA is a

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Naxlex Comprehensive Predictor Exams

Due to the electrons in their orbitals, sodium, potassium and calcium tend to lose electrons when bonding. When these bonds are dissolved in water, these particles become ________ particles called ________

Correct Answer is A

Explanation

Which subclassification of lipids would include cholesterol and its derivatives?

Correct Answer is E

Explanation

Flourine has an atomic number of 9. You would expect fluorine would like to do which of the following?

The smallest part of an element that still exhibits the chemical characteristics of that element is

When carbon and oxygen bond they do so by sharing electrons, but the electrons spend most of their time orbiting around oxygen. What type of bond forms between these two atoms?

I am in the laboratory separating plasma membranes from the cytoplasm in cell cultures. Using my ultra high powered scanning electron microscope to look at the plasma membrane samples, which of the following would you expect to see in greatest abundance?

As you know, water mixes with other compounds to form a variety of mixes. Which of the following would best describe a mix where the particles are not dissolved but will precipitate out?

Which of the following terms is mismatched?

Of the storage forms of glucose, which can we not digest?