27 Questions
What is the main focus of Biology as a scientific study?
Life
Reductionism in Biology is best described as:
An approach that simplifies complex systems into manageable components for study.
Which of the following is NOT one of the five unifying themes in Biology?
Diversity
What is the significance of studying life at different levels of biological organization?
To understand the emergent properties that arise at different levels.
What is the most common form of regulation in living organisms?
Negative feedback
How can the scope of Biology be described?
Subject of enormous scope
Which biological process can self-regulate through feedback mechanisms?
Cell division
In positive feedback regulation, what happens to the end product?
It speeds up its own production
Which components make up living organisms according to the text?
Cells and organs
What type of interactions do organisms have at the ecosystem level?
With other organisms and physical factors
Which form of interaction occurs when an organism speeds up its own production?
Positive interaction
What is the universal genetic language common to all organisms?
DNA
Which of the following best represents the unity in diversity of life?
Different animals having similar skeletons
What did Charles Darwin propose as the mechanism behind descent with modification?
Natural selection
According to Darwin, what evidence supported 'descent with modification'?
Evidence of species evolving from common ancestors
What does the history of life as documented by fossils and other evidence represent?
The saga of a changing Earth over billions of years
What is the largest organelle in a eukaryotic cell?
Nucleus
What is the main genetic material found in chromosomes?
DNA
Which cell type does not contain a nucleus or other membrane-enclosed organelles?
Prokaryotic cell
What is the study of whole sets of genes in one or more species called?
Genomics
Which term describes the entire set of proteins expressed by a given cell, tissue, or organ?
Proteome
What are the units of inheritance that encode information for building molecules within the cell?
Genes
What is the primary source of energy for life on Earth?
Solar energy
In an ecosystem, how is energy typically lost to the surroundings?
As heat
What role do consumers play in an ecosystem?
Feed on producers or their remains
How do interactions between components ensure smooth integration in biological systems?
By assisting in the integration of all parts
What happens to chemicals within an ecosystem after they are used by organisms?
They are recycled within the ecosystem
Explore the concept of energy transfer and transformation in living organisms. Learn how energy from the sun is converted by producers like plants, and passed along to consumers. Understand how some energy is lost as heat when organisms use energy to perform work.
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