DNA, chromosomes, genes

Question 1

Genes

Answer 1

Segments of DNA which can code for specific proteins.

located on chromosomes

offspring inherit traits encoded by genes present within their parents DNA

Question 2

(old ATI)
Which of the following is the number of different types of nucleotide bases found in DNA?

A. 1
B. 2
C. 3
D.4

Answer 2

D. 4

There are 4 nucleotide bases in DNA.
There is one type of sugar in DNA
There are two strands of DNA in a double helix
Three nucleic acids make a codon.

Question 3

(old ati)
In which of the following directions is DNA coded?

A. left to right
B. Top to bottom
C. 5’ to 3’
D. 3’ to 5’

Answer 3

C. 5’ to 3’

There is no left and right in chromosomes.
There is no top and bottome in chromosomes

Question 4

(Old ati)
A segment of DNA that contains a word made of three nucleotides is refered to as which of the following?

A. gene
B. Codon
C. Chromosome
D. Genome

Answer 4

B. codon

A codon is a three-nucleotide “word” that codes for an amino acid

A gene is an instructional “sentence” made of codon “words”.

A chromosome is composed of a length of DNA incorporating a linear arrangement of genes on each strand.

A gene is made of codon “words” that link to form a gene “sentence”.

A genome represents the sum total of all the chromosomal information in the cell.

Question 5

(OLD ati)
Match the letters shown in the figure to their description.

Answer 5

first- Genome “book”
second- chromosome “chapter”
third- Gene “sentence”
fourth- nucleotide “letter”
fith- codon “word”

Question 6

(new ati)
Which of the following nucleotides pairs with adenine in DNA?

A. Guanine
B. Adenine
C. Cytosine
D. Thymine

Question 7

(new ati)
Which of the following is the number of chromosomes found in the human cell?

A. 1 circular chromosome
B. 22( 11 pairs)
C. 46 (23 pairs)
D. 50 (25 pairs)

Question 8

(new ati)

Which of the following statements about nucleotides and genes is correct?

A. A gene contains thousands of chromosmes
B. A nucleotide contains many genes and chromsomes.
C. Nucleotides form strings of DNA that make up genes
D. Nucleotides form strings of chromosomes that make up DNA

Question 9

(new ati)
Which of the following is the name for a segment of DNA that codes for a protein?
A. Nucleotide
B. Gene
C. Chromosome
D. DNA

Question 11

(new ati)
In your own words, explain the relationship among chromsomes, DNA, RNA, and genes.