Consider statements about human anatomy: 1. The sternum is located in the chest. 2. The clavicle is the collar bone. 3. The scapula is the shoulder blade. Which are correct? MCQ with Answer and Explanation

Consider statements about human anatomy: 1. The sternum is located in the chest. 2. The clavicle is the collar bone. 3. The scapula is the shoulder blade. Which are correct?
A. 1, 2 and 3
B. 2 and 3 only
C. 1 and 3 only
D. 1 and 2 only
Answer: Option A
Solution (By JKSSB Mock Tests)
The sternum, or breastbone, is a flat bone located in the center of the chest, to which the ribs attach. The clavicle, commonly known as the collarbone, connects the arm to the body, running horizontally above the first rib. The scapula, or shoulder blade, is a flat, triangular bone located on the upper back, forming the posterior part of the shoulder girdle. All statements are correct.

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More Biology Questions

Question #1
Which of the following is a cartilaginous fish?
A. Hippocampus (seahorse)
B. Scoliodon (dogfish)
C. Catla
D. Rohu

Correct Answer: Option B


Explanation:
Scoliodon is a cartilaginous fish (Chondrichthyes), possessing a cartilaginous endoskeleton, placoid scales, and ventral mouth. Rohu and Catla are bony fishes (Osteichthyes). Hippocampus is also a bony fish. Chondrichthyes include sharks, rays, and skates. They lack an air bladder and have to swim constantly to avoid sinking.

This question belongs to: Science Biology
Question #2
Which radioactive isotope is commonly used for dating relatively recent fossils (up to about 50,000 years old)?
A. Potassium-40
B. Rubidium-87
C. Carbon-14
D. Uranium-238

Correct Answer: Option C


Explanation:
Carbon-14 (radiocarbon) dating is used to determine the age of organic materials up to about 50,000 to 60,000 years old. Living organisms absorb Carbon-14 from the atmosphere. When they die, absorption stops, and the Carbon-14 decays at a known rate (half-life of 5,730 years). By measuring the remaining Carbon-14, the age of the fossil can be calculated.

This question belongs to: Science Biology
Question #3
The technique used to visualize and separate DNA fragments based on size is:
A. Microscopy
B. Gel electrophoresis
C. PCR
D. Centrifugation

Correct Answer: Option B


Explanation:
Agarose gel electrophoresis separates DNA fragments by size as they move through the gel under an electric field; smaller fragments migrate faster. DNA is stained with ethidium bromide and visualized under UV light. PCR amplifies DNA, centrifugation separates by density, microscopy provides magnified images. Gel electrophoresis is essential in molecular biology and forensics.

This question belongs to: Science Biology