01
Written response
1 point
An egg with 23 chromosomes is fertilized by a sperm with 23 chromosomes. How many chromosomes are in the resulting cell?
Free Practice Quiz Question List
06 Biology and Human Body Systems Online Quiz Questions
Use this free practice quiz with 20 questions to review 06 Biology and Human Body Systems, test your knowledge, and prepare for your next test or exam.
20 questions
02
Choose one
1 point
Which body system exchanges oxygen and carbon dioxide between air and blood?
- A
Cardiovascular system
- B
Respiratory system
- C
Digestive system
- D
Urinary system
03
Choose one
1 point
A muscle cell contracts repeatedly and therefore has a high energy demand. Which cell structure is especially important for supplying most of its usable energy?
- A
Ribosomes
- B
Lysosomes
- C
Mitochondria
- D
Golgi apparatus
04
Written response
1 point
What term describes the study of how body structures function?
05
Choose one
1 point
A tissue lining part of the digestive tract absorbs nutrients. Which major tissue type best matches this role?
- A
Epithelial tissue
- B
Connective tissue
- C
Nervous tissue
- D
Muscle tissue
06
True or false
1 point
Smooth muscle helps move material through internal organs.
- A
True
- B
False
07
Written response
1 point
How many chromosomes does each human egg or sperm have?
08
Choose one
1 point
In a simple dominant–recessive model, A is dominant and a is recessive. What phenotype is expected for an individual with genotype Aa?
- A
The recessive phenotype, because a is present
- B
The dominant phenotype, because A is dominant
- C
Both phenotypes, because the alleles differ
- D
No phenotype, because the genotype is incomplete
09
Choose one
1 point
Which type of cell division produces gametes with one chromosome from each chromosome pair?
- A
Mitosis, which produces two genetically similar body cells
- B
Mitosis, which produces gametes with one chromosome from each pair
- C
Meiosis, which produces gametes with one chromosome from each pair
- D
Meiosis, which produces two genetically similar body cells for repair
10
Choose one
1 point
A body system filters blood, removes wastes, and helps regulate water and electrolyte balance. Which system performs these functions?
- A
Digestive system
- B
Lymphatic/immune system
- C
Endocrine system
- D
Urinary system
11
Choose one
1 point
After a meal, blood glucose rises. The pancreas releases insulin, which promotes glucose uptake and storage and helps bring the elevated glucose level down. Which type of feedback is illustrated?
- A
Positive feedback, because insulin intensifies the rise in glucose
- B
Negative feedback, because the response counteracts the rise in glucose
- C
Positive feedback, because glucose uptake stops insulin release permanently
- D
No feedback, because the pancreas does not respond to glucose
12
Choose one
1 point
The heart contains several tissue types working together. Which level of body organization does the heart itself represent?
- A
Organ system
- B
Tissue
- C
Organ
- D
Cell
13
Choose all
1 point
Select all statements that correctly describe the relationship among genes, DNA, chromosomes, and the nucleus.
- A
A gene is a section of DNA that provides instructions for a functional product.
- B
DNA is packaged with proteins into chromosomes.
- C
Chromosomes are located in the nucleus of human body cells.
- D
Genes are made of chromosomes.
- E
Every human cell, including eggs and sperm, has 46 chromosomes.
14
Choose all
1 point
A tissue sample is identified as connective tissue. Select all examples of connective tissue listed below.
- A
Bone
- B
Blood
- C
Cartilage
- D
Fat
- E
Nervous tissue
15
True or false
1 point
During childbirth, contractions can intensify the process until a particular endpoint is reached. This is an example of positive feedback.
- A
True
- B
False
16
True or false
1 point
Every organ belongs exclusively to one organ system, with no overlap between systems.
- A
True
- B
False
17
Written response
1 point
What is the organizational level formed by organs that cooperate to perform major functions?
18
Fill in the blank
1 point
An organ contains at least two .
19
Fill in the blank
1 point
For growth and repair, mitosis produces .
20
Open ended
1 point
Explain how tissues, organs, and organ systems are related. Use the heart and cardiovascular system to illustrate how these organizational levels connect.