Biology: Introduction and Definition

What is the mass number or atomic mass of an element?

Which best defines an isotope?

What is the most common isotope of carbon?

Which elements are part of the major classes of biological macromolecules?

Which type of molecule provides energy to the body?

What is the general formula representing carbohydrates?

What is the main focus of biology?

Which of the following is NOT a characteristic of living organisms?

What is the basic unit of life in all living organisms?

In multicellular organisms, what do similar cells form together?

Which of the following lists the levels of organization in increasing complexity?

What maintains distinct internal compartments in cells and keeps them separated from external threats?

What are the main components of a fat molecule, such as a triglyceride?

Which type of fats are solid at room temperature?

What is the major constituent of the plasma membrane?

Why are fatty acid chains considered hydrophobic?

What is the main characteristic of phospholipids in terms of hydrophobicity and hydrophilicity?

Where do the fatty acids of phospholipids face in the cell membrane?

What is the main function of proteins in biological systems?

Which macromolecule carries the genetic blueprint of a cell?

What happens to a protein when subjected to changes in temperature or pH?

Which type of macromolecule has a ring structure with four linked carbon rings?

What is denaturation of a protein?

What is the main role of nucleic acids in living organisms?

What is an organ system?

What is metabolism?

What is anabolism?

What is catabolism?

What is an organism?

What is a community?

What distinguishes living organisms from nonliving objects?

What is the correct order of organization levels in increasing complexity for body structures?

Which level of organization involves the formation of tissues by collaborating similar cells?

What maintains distinct internal compartments in cells?

At what level of organization do cells work together to form organ systems?

What is the fundamental level of organization below macromolecules?

What is the mass number of Carbon-14?

Which elements are organic and make up the majority of a cell's mass?

Which class of biological macromolecules provides energy to the body through glucose?

How many protons are found in Carbon-12?

What is the main characteristic that distinguishes isotopes from each other?

In the formula (CH2O)n for carbohydrates, what does 'n' represent?

What is the function of anabolism in metabolism?

Which level of organization includes all the different living things (organisms) in the same place at the same time?

In an ecosystem, what do the non-living factors (abiotic) include?

What does catabolism involve in terms of chemical reactions?

Which term describes a group of organs that work together to perform major functions in the body?

What is the main characteristic of biosphere?

What type of molecules have a ring structure with four linked carbon rings?

Which macromolecule may serve as structural, regulatory, contractile, protective, or toxin functions?

What is the consequence of irreversible denaturation of a protein?

Which macromolecule carries the genetic blueprint of a cell?

What are the two main types of nucleic acids?

Why are the functions of proteins very diverse?

What is the main difference between a tissue and an organ?

Which level of organization consists of two or more tissue types working together?

What is the primary function of an organelle within a cell?

In terms of organization, what differentiates an ecosystem from a community?

What distinguishes an atom from a molecule in terms of composition?

What characteristic distinguishes cells from tissues in terms of structure?

Organization is not a characteristic that distinguishes living organisms from nonliving objects.

Organs work independently in multicellular organisms to carry out specific functions.

Molecules are made up of subatomic particles, atoms, and cells in the fundamental levels of organization.

Homeostasis is the term used to describe the ability of living organisms to move and adapt to their environment.

An ecosystem is a level of organization that is more complex than an organism.

In multicellular organisms, tissues are formed by collaborating similar molecules.

Organelle is a small part formed by molecules, inside a cell that has a specific functional or structural purpose.

All living structures of human anatomy contain only atoms.

A tissue is a group of many different random cells working together.

An organ is composed of a single tissue type.

Cells are the smallest independently functioning unit of a living organism.

Atoms are made up of subatomic particles such as the proton, electron, and neutron.

All steroids have five linked carbon rings.

An organism is a group of organs that work together to perform major functions in the body.

Proteins are always irreversible after denaturation occurs.

The biosphere is the part of the earth's surface where living things cannot be found.

DNA is the only type of nucleic acid found in living organisms.

Metabolism involves only one type of reaction, either anabolism or catabolism.

RNA is mainly involved in energy storage within cells.

Anabolism is the process where larger, complex substances are broken down into simpler molecules.

Proteins may serve as toxins or enzymes, among other functions.

Catabolism releases energy during the breakdown of larger, complex substances.

Cholesterol is an example of a steroid with a short tail.

The ecosystem only consists of living organisms (biotic factors) in a specific place at a specific time.

Phospholipids are the main component of the plasma membrane.

Saturated fats are usually liquid at room temperature.

Fatty acids consist of a long chain of hydrocarbons and a basic amino group.

The third carbon of the glycerol backbone in phospholipids is linked to a phosphate group.

Unsaturated triglycerides are called oils and are solid at room temperature.

The phosphate group in phospholipids is hydrophobic and excludes itself from water.