Biology · Question 1
Which base pairs with cytosine in a DNA molecule?
- Uracil
- Guanine
- Thymine
- Adenine
Show AnswerHide Answer
Correct answer: B
Guanine
DNA base pairing joins cytosine with guanine and adenine with thymine.
LEARN AT YOUR OWN PACE
Nursing Question Bank
Think through each question, then reveal the answer and explanation.
Take a practice test →Prepare for Army AFNS and civilian nursing admissions in one place. Choose a pathway or browse all questions.
Each pathway includes common preparation. These are original practice questions, not verified official past papers.
Biology · Question 2
Which sugar occurs in the backbone of DNA?
- Ribose
- Glucose
- Fructose
- Deoxyribose
Show AnswerHide Answer
Correct answer: D
Deoxyribose
DNA contains deoxyribose; its backbone alternates sugar and phosphate groups.
Biology · Question 3
In DNA, what directly encodes the genetic information?
- The thickness of the cell wall
- The order of bases
- The colour of the nucleus
- The number of cell membranes
Show AnswerHide Answer
Correct answer: B
The order of bases
The sequence of DNA bases carries biological instructions.
Biology · Question 4
Which organelle produces most ATP during aerobic energy production in a typical human cell?
- Lysosome
- Mitochondrion
- Nucleolus
- Golgi apparatus
Show AnswerHide Answer
Correct answer: B
Mitochondrion
Mitochondria convert energy from nutrients into ATP.
Biology · Question 5
What is the full name of ATP?
- Adenosine triphosphate
- Adenine tetraphosphate
- Adenosine diphosphate
- Amino triphosphate
Show AnswerHide Answer
Correct answer: A
Adenosine triphosphate
ATP means adenosine triphosphate and is a cellular energy carrier.
Biology · Question 6
Human mitochondrial DNA is ordinarily inherited from which parent?
- Neither parent
- Both parents equally
- Father
- Mother
Show AnswerHide Answer
Correct answer: D
Mother
Mitochondrial inheritance in humans is normally maternal.
Biology · Question 7
A ribosome is principally made of which two materials?
- Glucose and glycogen
- DNA and starch
- RNA and protein
- Lipid and cellulose
Show AnswerHide Answer
Correct answer: C
RNA and protein
Ribosomes contain ribosomal RNA and proteins.
Biology · Question 8
Which molecule does a ribosome read during translation?
- Messenger RNA
- Glycogen
- Cellulose
- Cholesterol
Show AnswerHide Answer
Correct answer: A
Messenger RNA
Ribosomes read mRNA to assemble an amino-acid sequence.
Biology · Question 9
During translation, amino acids are joined to build which product?
- A polypeptide
- A triglyceride
- A starch granule
- A DNA strand
Show AnswerHide Answer
Correct answer: A
A polypeptide
A polypeptide is an amino-acid chain that can fold into a protein.
Biology · Question 10
Which name refers to an upper chamber of the human heart?
- Pericardium
- Septum
- Ventricle
- Atrium
Show AnswerHide Answer
Correct answer: D
Atrium
The two atria are the upper heart chambers.