Biology Concepts Review

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Questions and Answers

Which of the following best illustrates the concept of emergent properties in biological systems?

The transport of oxygen by red blood cells.
The process of a single cell undergoing mitosis.
The ability of a community to maintain biodiversity. (correct)
The arrangement of atoms to form a water molecule.

A biologist discovers a new organism. Which of the following characteristics would classify it as belonging to the Domain Eukarya?

The absence of a membrane-bound nucleus.
The presence of peptidoglycan in its cell wall.
The ability to survive in extreme environmental conditions.
The presence of membrane-bound organelles in its cytoplasm. (correct)

In an ecosystem, which of the following components represents the abiotic factors?

The population of herbivores.
The interactions between predators and prey.
The community of decomposers.
The amount of sunlight and water availability. (correct)

Which of the following cellular components is primarily responsible for the synthesis of lipids and the detoxification of drugs?

Smooth Endoplasmic Reticulum (A) Signup and view all the answers

If a scientist is studying the energy flow and nutrient cycling in a forest, which level of ecological study is being conducted?

Ecosystem ecology (B) Signup and view all the answers

Which process ensures that each daughter cell receives the same number and kind of chromosomes as the parent cell?

Mitosis (A) Signup and view all the answers

Which of the following best describes the role of natural selection in evolution?

It favors the survival and reproduction of individuals with advantageous traits. (A) Signup and view all the answers

Which of the following is a direct result of the selective permeability of the cell membrane?

The regulation of substances entering and exiting the cell. (A) Signup and view all the answers

If a mutation occurs in a gene, what is the most likely direct consequence?

A change in the sequence of amino acids in a protein. (A) Signup and view all the answers

Which of the following represents the correct order of biological organization, from least to most complex?

Cell, tissue, organ, organ system, organism. (B) Signup and view all the answers

How does the structure of the cell membrane contribute to its function as a selectively permeable barrier?

The phospholipid bilayer has hydrophilic heads and hydrophobic tails, allowing only certain molecules to pass. (B) Signup and view all the answers

What is the primary role of ribosomes in a cell?

To synthesize proteins. (A) Signup and view all the answers

How do eukaryotic cells differ from prokaryotic cells in terms of genetic material organization?

Eukaryotic cells have DNA in a nucleus, while prokaryotic cells have DNA in a nucleoid region. (A) Signup and view all the answers

Which process converts light energy into chemical energy in plants?

Photosynthesis (A) Signup and view all the answers

How does the process of meiosis contribute to genetic diversity?

By creating four genetically distinct daughter cells (B) Signup and view all the answers

Which level of ecological study considers the interactions between different species in a specific area?

Community ecology (A) Signup and view all the answers

Which of the following is the best example of homeostasis?

A human sweating to regulate body temperature. (C) Signup and view all the answers

According to the Linnaean system of classification, which level of classification is more inclusive than family but less inclusive than class?

Order (C) Signup and view all the answers

What evidence supports the theory of evolution?

All of the above (D) Signup and view all the answers

Which of the following represents the primary function of vacuoles in plant cells?

Storage and maintenance of cell turgor (D) Signup and view all the answers

Flashcards

What is Biology?

The scientific study of life, exploring structure, function, and evolution.

Cell Theory

All living organisms are composed of cells.