BIO 024 LAB QUIZ - A30
Question 1
Which of the following is an example of a fat-soluble vitamin?
Vitamin C
Vitamin B12
Vitamin D
Folate
Question 2
Which of the following minerals is considered a trace mineral?
Zinc
Sodium
Calcium
Potassium
Question 3
In the vitamins experiment, how long should the jars be left to stand after the extraction process?
5–10 minutes
30 minutes
1 hour
Overnight
Question 4
How long should you observe the changes on the filter paper strip?
5–10 minutes
15 minutes
Approximately 30 minutes
Overnight
Question 5
Which pigment is most likely found at the top of the filter paper?
Chlorophylls
Xanthophylls
Carotenes
Anthocyanins
Question 6
What is the shape of DNA?
Single strand
Triple helix
Double helix
Circular
Question 7
What forms the “backbone” of the DNA ladder?
Nitrogenous bases
Sugar and phosphate groups
Proteins
Hydrogen bonds
Question 8
Which of the following is the correct base pairing in DNA?
Adenine (A) – Guanine (G); Cytosine (C) – Thymine (T)
Adenine (A) – Thymine (T); Guanine (G) – Cytosine (C)
Adenine (A) – Cytosine (C); Guanine (G) – Thymine (T)
Adenine (A) – Uracil (U); Guanine (G) – Cytosine (C)
Question 9
Who proposed the double helix model of DNA in 1953?
Rosalind Franklin and Linus Pauling
Francis Crick and Rosalind Franklin
Gregor Mendel and James Watson
James Watson and Francis Crick
Question 10
According to the Central Dogma of Molecular Biology, what is the correct flow of genetic information?
Protein → RNA → DNA
RNA → DNA → Protein
DNA → RNA → Protein
DNA → Protein → RNA
Question 11
What is the role of ribosomal RNA (rRNA)?
Carry genetic instructions to the ribosome
Bring amino acids to the ribosome
Form part of the ribosome and facilitate protein synthesis
Transcribe DNA into RNA
Question 12
Where does transcription occur in the cell?
Cytoplasm
Nucleus
Ribosome
Mitochondria
Question 13
What is produced during transcription?
DNA
Protein
mRNA
tRNA
Question 14
Which type of point mutation does not change the amino acid sequence of a protein?
Silent
Missense
Nonstop
Frameshift
Question 15
Which chromosomal mutation involves a DNA segment being lost?
Duplication
Inversion
Deletion
Translocation