Biology Mcqs

Who is commonly known as “the Father of Microbiology”?A. Charles Darwin
B. Robert Hook
C. Antonie van Leeuwenhoek
D. None of these

 

Which of following is a tiny gland?

A. Thyroid
B. Pancrease
C. eal
D. Pituitary

eal gland situated in________?

A. Brain
B. Neck
C. Stomach
D. Above kideys

The eal gland is located deep in the brain in an area called the epithalamus, where the two halves of the brain join. In humans, this is situated in the middle of the brain; it sits in a groove just above the thalamus, which is an area that co-ordinates a variety of functions related to our senses.

Cotton, wool, silk are examples of ____________ ?A. Plant Fibres
B. Animal Fibres
C. Natural Fibres
D. Synthetic Fibres

All cell of an organism are similar in_________?

A. Shape
B. Size
C. Structure
D. Fundamental organization

DNA of mitochondria is__________?A. circular
B. spring
C. straight
D. All of these

Mitochondrial DNA is the small circular chromosome found inside mitochondria. The mitochondria are organelles found in cells that are the sites of energy production. The mitochondria, and thus mitochondrial DNA, are passed from mother to offspring.

 

Which organelles contain its own DNA?A. nucleus
B. mitochondria
C. chloroplast
D. All of these

The three organelles that contain DNA are the nucleus, mitochondria and chloroplasts. Organelles are membrane-bound subunits within a cell — analogous to organs in the body — that perform specific functions. The nucleus is the control center of the cell, and houses genetic information. The mitochondria and chloroplasts both produce energy, in animal and plant cells, respectively.

 

A decrease in the rate of beating of heart is called__________?

A. Bradycardia
B. Tachycardia
C. Braditachycardia
D. Non of these

A decrease in the rate of beating of heart is called Bradycardia. Bradycardia is a condition typically defined wherein an individual has a resting heart rate of under 60 beats per minute (BPM) in adults, although some studies use a heart rate of less than 50 BPM. Bradycardia typically does not cause symptoms until the rate drops below 50 BPM.

An increase in the heart rate is termed as:_________?

A. Bradycardia
B. Tachycardia
C. Trachybradycardia
D. Non of these

In tachycardia, an abnormal electrical impulse starting in the upper or lower chambers of the heart causes the heart to beat faster. Tachycardia is the medical term for a heart rate over 100 beats per minute. There are many heart rhythm disorders (arrhythmias) that can cause tachycardia

Muscle fatigue occurs due to accumulation of___________?

A. Acidic acid
B. Butyric acid
C. Citric acid
D. Lactic acid