What is DNA?
DNA is found in which cell organelle?
Nucleus
DNA has how many nitrogenous bases?
four (A -G-C-T)
What is a gene?
A segment (piece) of a DNA that is the basic physical and functional unit of heredity.
Which of the following can be found on one DNA molecule?
A. No more than 2 base pairs
B. A single amino acid
C. Hundreds of genes
D. At least 10 chromosomes
(C) Hundreds of genes
DNA is which of following organic molecules?
A) A lipid
B) A carbohydrate
C) A protein
D) A nucleic acid
nucleic acid
What is the name for the shape of DNA?
(double) helix
What are the function(s) of Genes?
Genes are pieces of DNA that act as instructions for building specific proteins, which in turn determine various traits and functions within an organism
What sugar is found in DNA?
deoxyribose
Which statement is true about DNA?
A. It makes proteins line up in a certain order.
B. It produces all the differences among living things.
C. It contains a small number of proteins.
D. It packages all the genes in a living thing.
What is: (B) It produces all the differences among living things.
A nucleic acid is made up of smaller units, or building blocks, called ____________________
What are nucleotides
One model of a DNA molecule is a twisted ladder.
In this model, what do the 'rungs' of the ladder represent?
What is are the nitrogen bases
If DNA can be described as the instruction book for building an organism, which phrase best describes a gene?
A) A sentence in the instruction book
B) A single letter in the instruction book
C) C.A three-letter word in the instruction book
D) The paper the instruction book is written on
What is: (A) A sentence in the instruction book
How many chromosomes does a human have?
46
What is the function of a chromosome?
A. To tightly package a single protein
B. To tightly package a single molecule of DNA
C. To tightly package a single gene
D. To tightly package a single amino acid
(B) To tightly package a single molecule of DNA
DNA nucleotides are made up of three components (parts), Name them
1. A sugar, 2. A phosphate, 3. A nitrogen base (need all 3 to be correct)
Genes provide the directions for a cell to put together molecules that express our ...............
Traits
What are genes used to make?
proteins
Chromosomes are made of proteins and...........
DNA
Complete the DNA sequence: ATCGGCTAATCG
TAGCCGATTAGC
What is DNA?
What is: the molecule that carries genetic information for the development and functioning of an organism.
What do the nitrogen bases code for?
What is a gene?
Where do you find genes?
What is: found on chromosomes (in the nucleus)
Put in order from smallest in size to largest in size [chromosome, gene, nucleus, DNA, nucleotides, cell]
nucleotides, gene, DNA, chromosome, nucleus, cell
The well-known molecular structure of DNA is called ...............
Double helix