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Questions and Answers
The branch of science that studies life is:
The branch of science that studies life is:
- Taxonomy
- Morphology
- Biology (correct)
- Physiology
Humans, like all other multicellular organisms, grow by:
Humans, like all other multicellular organisms, grow by:
- Increasing the number of existing cells
- Increasing the size of existing cells
- Increasing the amount of non-cellular material around cells
- All of the above (correct)
What are the defining features of living organisms that respond to their environment?
What are the defining features of living organisms that respond to their environment?
- Organization
- Sensitivity
- Development, growth, and reproduction
- All of the above (correct)
Maintenance of internal favorable conditions despite changes in the external environment is called:
Maintenance of internal favorable conditions despite changes in the external environment is called:
An example of thermoregulation is:
An example of thermoregulation is:
All chemical reactions that occur in a cell of an organism are called:
All chemical reactions that occur in a cell of an organism are called:
Metabolism is:
Metabolism is:
Which of the following best describes a population?
Which of the following best describes a population?
Organelles exist within cells which exist within tissues.
Organelles exist within cells which exist within tissues.
Single-celled prokaryotes are included in:
Single-celled prokaryotes are included in:
The purpose of taxonomy or classification is:
The purpose of taxonomy or classification is:
Which of the following is least similar in characters?
Which of the following is least similar in characters?
According to Carl Linnaeus, the hierarchical system of taxonomy, the highest level is:
According to Carl Linnaeus, the hierarchical system of taxonomy, the highest level is:
Which of the following is most similar in characters as compare to genus?
Which of the following is most similar in characters as compare to genus?
The branch of science that studies life is:
The branch of science that studies life is:
Humans, like all other multicellular organisms, grow by:
Humans, like all other multicellular organisms, grow by:
The defining features of living organisms respond to their environment:
The defining features of living organisms respond to their environment:
Maintenance of internal favorable conditions despite changes in the external environment is:
Maintenance of internal favorable conditions despite changes in the external environment is:
An example of thermoregulation is:
An example of thermoregulation is:
All chemical reactions that occur in a cell of the organism are called:
All chemical reactions that occur in a cell of the organism are called:
Metabolism is:
Metabolism is:
Catabolism is:
Catabolism is:
The correct sequence of increasing complexity/organization is:
The correct sequence of increasing complexity/organization is:
Which of the following best describes a population?
Which of the following best describes a population?
Organelles exist within cells which exist within tissues.
Organelles exist within cells which exist within tissues.
All individuals within a species living within a specific area are called:
All individuals within a species living within a specific area are called:
Single-celled prokaryotes are included in:
Single-celled prokaryotes are included in:
The source of the diversity of life is:
The source of the diversity of life is:
Species is:
Species is:
The branch of biology connected with nomenclature, identification, and classification is:
The branch of biology connected with nomenclature, identification, and classification is:
Arrangement of categories from lowest to highest is called:
Arrangement of categories from lowest to highest is called:
First act in taxonomy is:
First act in taxonomy is:
Which of the following is least similar characters?
Which of the following is least similar characters?
Which of the following is most similar characters?
Which of the following is most similar characters?
According to Carl Linnaeus, the hierarchical system of taxonomy, the highest level is:
According to Carl Linnaeus, the hierarchical system of taxonomy, the highest level is:
According to Carl Linnaeus, the hierarchical system of taxonomy, the lowest level is:
According to Carl Linnaeus, the hierarchical system of taxonomy, the lowest level is:
The only category that has a real existence is:
The only category that has a real existence is:
Linnaeus was first credited with:
Linnaeus was first credited with:
Basic unit or smallest taxon is:
Basic unit or smallest taxon is:
The generic 'genus' name of Mango is:
The generic 'genus' name of Mango is:
According to Carl Linnaeus, the hierarchical system of taxonomy from lowest to highest levels is:
According to Carl Linnaeus, the hierarchical system of taxonomy from lowest to highest levels is:
Which of the following is correct sequences of taxonomic category from highest to lowest levels is:
Which of the following is correct sequences of taxonomic category from highest to lowest levels is:
Which covers the largest number of organisms:
Which covers the largest number of organisms:
The purpose of taxonomy or classification is:
The purpose of taxonomy or classification is:
The scientific name of coconut palm is:
The scientific name of coconut palm is:
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Study Notes
Characteristics of Life
- Biology is the study of life.
- Living organisms are organized, meaning they are composed of cells.
- Living organisms respond to stimuli, such as the sunflower turning towards the sun.
- Living organisms grow and develop, increasing in size and complexity.
- Living organisms adapt to their environment, which can be seen in the diversity of life on Earth.
- Living organisms regulate their internal environment, maintaining a stable state called homeostasis.
- Living organisms process energy, which is necessary for all life processes.
Levels of Organization
- The basic unit of matter is the atom, which combines to form molecules.
- The smallest unit of life is the cell, which can be either prokaryotic or eukaryotic.
- DNA is a macromolecule, a complex molecule important for life.
- Cells combine to form tissues, which are groups of cells with similar structure and function.
- Tissues work together to form organs, which carry out specific functions.
- Organs make up organ systems, which are groups of organs that work together to carry out general functions.
- All individuals of the same species living in a particular area form a population.
- Different populations living in the same area form a community.
- A community and the physical environment in which it lives make up an ecosystem.
- The biosphere encompasses all living organisms and their physical environment.
Diversity of Life
- Evolution is the source of the diversity of life on Earth.
- Species are the basic unit of evolution.
- Three domains contain all living organisms: Eukarya, Bacteria, and Archaea.
- Eukarya include plants, animals, fungi, and protists.
- Bacteria and Archaea are single-celled prokaryotes.
Taxonomy
- Taxonomy is the branch of biology concerned with naming, identifying, and classifying organisms.
- The hierarchical system of taxonomy arranges organisms into categories from lowest to highest: species, genus, family, order, class, phylum/division, kingdom, and domain.
- The lowest level, species, is the only category that has a real existence.
- The system of binomial nomenclature, introduced by Carolus Linnaeus, uses a two-part name for each species: genus and species.
- In binomial nomenclature, the genus is capitalized, both genus and species are written in italics, and genus is written first, then species.
Taxonomy Examples
- Coconuts belong to the genus Coco and species Nucifera.
- Mangoes belong to the genus Mangifera.
- Dogs, lions, and snakes belong to the phylum Chordata and the kingdom Animalia.
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