wk 10 assignment 1

By convention, the sequence of DNA bases is usually written in the______ to ______ direction

: 5', 5 prime, five', five prime, 5`, 5′, or 5´ : 3', 3 prime, three', three prime, 3`, 3′, or 3´

Why do we say that a DNA or RNA strand has an intrinsic polarity?

Because it has a free 5' phosphate at one end and a free 3' OH group at the other end

A chromosome is primarily composed of (chose all that apply)

DNA proteins

In which of the following chromosomal entities are an individual's traits specified?

Genes

Nucleotides contain a sugar, a phosphate, and a nitrogenous

base

Genes, which contain trait specifying information, are located on

chromosomes

Indicate the 4 nitrogenous bases used in DNA.

cytosine guanine adenine thymine

Which of these are used in RNA?

guanine adenine uracil cytosine

Match each element of the nucleotide to the sugar carbon atom it is attached to. 1 3 5

nitrogenous base OH group phosphate group

Select all of the following that are components of a nucleotide.

nitrogenous base phosphate group sugar

In DNA, consecutive nucleotides are linked via_____ bonds, which are made between the 5' phosphate of one nucleotide and the 3'_____group of another nucleotide.

phosphodiester hydroxyl or OH

Adjacent nucleotides in the same DNA strand are held together by covalent bonds known as______bonds.

phosphodiester or phosphoester

Chromosomes are primarily composed of DNA and_____

protein

In nucleic acids, the prime symbol is used to indicate

the carbon in a sugar rather than the atoms in the bases attached to the sugars