Biology MCQs

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The pituitary gland is one of the smallest glands of the human body and it secretes the most number hormones in the body. It is also known as the master gland of the human body.

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The testes produce testosterone which is responsible for male sexual characteristics.

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The Corpus luteum secretes relaxin during pregnancy. The human corpus luteum secretes relaxin, oxytocin, and progesterone.

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44 is the number of autosomes in a human primary sperm cell. An autosome is a chromosome, which is not a sex chromosome.

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A connective tissue cord extending between the testis and the abdominal wall is known as the spermatic cord.

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Symptoms of rinderpest include constipation with hard stools containing fever, dysentery or blood, discharge from the eyes and nose, anorexia, leukopenia followed by diarrhea or diarrhea with an unpleasant odor.

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A molecule that contains nitrogen and has the chemical properties of a base is called a Nitrogenous base. Nucleic acids are composed of a combination of 5 nitrogenous bases:
1. Guanine and adenine are double-ringed purine molecules.
2. Cytosine, thymine, and uracil are single-ringed pyrimidine molecules.

Notes:
A virus has a simple structure. It has no internal cellular structure, no cell wall or cell membrane, just the protein coat that holds the string of nucleic acid. It is made only of a nucleic acid + a protein coat. A cell wall is a layer located outside the cell membrane found in plants, fungi, bacteria, algae, and archaea.

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The cerebrum or cortex is the largest part of the human brain, associated with higher brain function such as thought and action. Functions of the cerebrum include: initiation of movement, coordination of movement, temperature, touch, vision, hearing, judgment, reasoning, problem solving, emotions, and learning.

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Myrmecology is the scientific study of ants, a branch of entomology. The word myrmecology was coined by William Morton Wheeler (1865–1937), although human interest in the life of ants goes back further, with numerous ancient folk references.