Biology Basics Quiz

Biology is the scientific study of life. It is a natural science with a broad scope, encompassing the study of all living organisms and their interactions with the environment.

The unifying themes in biology include the cellular basis of life, heredity and gene expression, evolution, energy processing, and regulation of internal environments.

Cells are the basic structural and functional units of all living organisms. They process hereditary information encoded in genes, which can be transmitted to future generations.

<p>Evolution is the process by which populations of organisms change over time. It explains how all living organisms share a common ancestry and have diversified into different species through natural selection and adaptation.</p> Signup and view all the answers

<p>Energy processing allows organisms to perform essential functions such as movement, growth, and reproduction. It is necessary for the maintenance of life processes.</p> Signup and view all the answers

<p>Human reproduction is sexual reproduction that involves sexual intercourse between a sexually mature human male and female. During sexual intercourse, the male and female reproductive systems interact and fertilization of the ovum by the sperm occurs, forming a zygote which develops into a human offspring.</p> Signup and view all the answers

<p>Gametes are specialized reproductive cells created through gametogenesis. Unlike normal cells which contain 46 chromosomes (23 pairs), gamete cells only contain 23 single chromosomes.</p> Signup and view all the answers

<p>Genetic recombination occurs when the gamete cells from the male and female merge into a zygote cell. It is during this process that the new zygote contains 23 chromosomes from each parent, resulting in a total of 46 chromosomes (23 pairs).</p> Signup and view all the answers

<p>Human embryogenesis is the defined development process of the zygote. It starts after fertilization of the ovum and marks the beginning of the typical 9-month gestation period.</p> Signup and view all the answers

<p>The fertilization of the ovum can be achieved through sexual intercourse between a sexually mature human male and female, or through artificial means.</p> Signup and view all the answers