Welcome to your Grade 11 Biology chapter 4
After carefully reading the following 30 questions, choose the correct answer.
1.
Which two scientists are credited with discovering the double helix structure of the DNA molecule?
2.
What are the basic building blocks of a DNA molecule?
3.
In the DNA ladder-like structure, which nitrogenous base always pairs with Cytosine?
4.
Which nitrogenous base is found in RNA but replaces thymine found in DNA?
5.
What is the term for threadlike structures made of histone protein and DNA molecules?
6.
Which process results in the formation of two genetically identical daughter cells?
7.
During which phase of mitosis do sister chromatids separate and move toward opposite poles?
8.
How many daughter cells are produced at the end of Meiosis II?
9.
What phenomenon in Prophase I of meiosis leads to an increase in genetic variation?
10.
Which molecule carries genetic information from the DNA in the nucleus to the ribosome?
11.
Protein synthesis consists of which two main processes?
12.
What is the role of tRNA during the process of translation?
13.
Who is known for explaining the mechanism of trait transfer through monohybrid and dihybrid crosses?
14.
The principle stating that genes for different traits are passed independently from parents to offspring is:
15.
In a monohybrid cross between two heterozygous (Aa) parents, what is the expected phenotypic ratio?
16.
Which cross is used to determine the unknown genotype of an individual with a dominant phenotype?
17.
In humans, which sex chromosome combination typically determines a male?
18.
What is the term for a type of inheritance where both alleles are expressed equally in the phenotype?
19.
Which field deals specifically with the function, shapes, interactions, and abundance of proteins?
20.
What is an environmentally induced phenotype that mimics a genetic trait called?
21.
A diagram showing how a gene or disease passes through generations in a family is a:
22.
Which technique involves introducing genes into existing cells to prevent or cure diseases?
23.
What is the sugar found in a DNA nucleotide?
24.
In the DNA double helix, the two strands run in opposite directions, which is described as:
25.
Which phase of the cell cycle involves the replication of DNA?
26.
How many different naturally occurring amino acids are used to make proteins?
27.
The Law of Segregation states that gametes receive how many alleles for each gene?
28.
Which area of bioinformatics examines the role of protein and DNA interactions on the whole function of cells?
29.
A disease caused by a change or mutation in an individual's DNA is called a:
30.
What is the final step of cell division where the cytoplasm physically separates?
