Biology

Biology Multiple Choice Questions and Answers (MCQ) PDF: Quizzes & Practice Tests with Answer Key. This section Biology basic concepts, theory and objective tests.

This section covers following topic MCQs: Bioenergetics, biological molecules, cell biology, coordination and control, enzymes, fungi, recyclers kingdom, gaseous exchange, growth and development, kingdom Animalia, kingdom plantae, kingdom prokaryotae, kingdom protoctista, nutrition, reproduction, support and movements, transport biology, variety of life, and homeostasis etc.

    Cell Cycle
    Which term defines division of genetic material in somatic cells?
    Author: rikazzz Comment
    Cell Cycle
    Which of following is an example of single-celled Eukaryote?
    Author: rikazzz Comment
    Common Human Diseases
    Siderosis or Welder’s disease is caused by inhaling:
    Siderosis, also known by the name of Welder’s Lung is a pathological condition of the lungs caused by chronic exposure to iron oxide dust, usually at the workplace.Siderosis is considered to be an occupational illness because people breathe in the iron dust at work. The condition usually shows up on Xrays as small, opaque spots on the worker’s lungs.
    Author: Bismil Hameed Comment
    Cell Cycle
    Place at genomic DNA where replication starts is called:
    Author: rikazzz Comment
    Heredity and Evolution
    When a gene exists in more than one form, the different forms are termed as:
    All copies of a gene are not identical and alternative forms of a gene are called alleles. They lead to the alternative or different forms of one trait.
    Author: rikazzz Comment
    Homeostasis
    Select the example below that describes an example of positive feedback.
    Examples of positive feedback in human physiology are rare. The contractions of childbirth is one. The other three describe negative feedback.
    Author: rikazzz Comment
    Homeostasis
    What does the term “homeostasis” refer to?
    This is the best definition of homeostasis. Choice D refers to negative feedback.
    Author: rikazzz Comment
    Cell Cycle
    HeLa cell line is an example of which of following cells?
    Author: rikazzz Comment
    Reproduction System
    How many pairs of the ovaries and testis are present in human females and males respectively?
    One pair of ovaries and testis are present in human females and males respectively. Ovaries produce ovum and sperm is produced by the testis. Ovum is the female gamete and sperm is the male gamete. Ovum and sperm fuse to form the zygote.
    Author: rikazzz Comment
    Heredity and Evolution
    Common origin of man and chimpanzee is best shown by:
    Common origin of man and chimpanzee is best shown by DNA similarity. According to DNA studies, DNA of humans and chimpanzees is 98% similar. Humans and chimpanzees share a common ancestry.
    Author: rikazzz Comment