1.
Made of many cells.
Correct Answer
B. Multicellular
Explanation
the word is derived from many
2.
Made up of a single cell.
Correct Answer
C. Unicellular
Explanation
The term "unicellular" refers to an organism that is composed of a single cell. This means that all of the functions and structures necessary for life are contained within that one cell. Examples of unicellular organisms include bacteria and protozoa. In contrast, multicellular organisms are made up of multiple cells that work together to form tissues, organs, and systems. Therefore, the correct answer in this case is "unicellular" because it accurately describes an organism consisting of a single cell.
3.
All the populations of different species that live and interact in an area.
Correct Answer
D. Community
Explanation
A community refers to all the populations of different species that live and interact in a specific area. It includes various organisms such as plants, animals, and microorganisms, which coexist and interact with each other in a particular ecosystem. This term encompasses the relationships, interactions, and interdependencies between different species within a given area.
4.
Cellular
fluid surrounding a cell's organelles.
Correct Answer
A. Cytoplasm
Explanation
The correct answer is cytoplasm. The cytoplasm is the cellular fluid that surrounds a cell's organelles. It is a gel-like substance that fills the cell and provides a medium for the organelles to carry out their functions. The cytoplasm also helps to maintain the shape and structure of the cell, as well as transport molecules and nutrients within the cell.
5.
A
combination of two or more tissues that work together to perform body
functions.
Correct Answer
C. Organ
Explanation
An organ is a combination of two or more tissues that work together to perform body functions. It is a higher level of organization in the body compared to individual tissues. Organelles are small structures within cells that perform specific functions, while an organ system is a group of organs that work together to perform a particular function. An organism refers to a complete individual living thing. Therefore, the correct answer is organ.
6.
Membrane-covered
organelle found in eukaryotic cells that contains a cells DNA and
serves as a control center for the cell.
Correct Answer
A. Nucleus
Explanation
The nucleus is a membrane-covered organelle found in eukaryotic cells that contains the cell's DNA and serves as a control center for the cell. It is responsible for regulating gene expression, cell division, and the overall functioning of the cell. The nucleus is essential for maintaining the integrity and stability of the genetic material and plays a crucial role in various cellular processes, including protein synthesis and cell growth.
7.
Describes cells that have a nucleus.
Correct Answer
C. Eukaryotic
Explanation
The term "eukaryotic" refers to cells that have a nucleus. These cells are more complex and evolved compared to prokaryotic cells, which lack a nucleus. Eukaryotic cells also contain other organelles, such as mitochondria, which play important roles in cellular functions. Therefore, the correct answer is "eukaryotic" because it accurately describes cells that have a nucleus.
8.
A structure that surrounds the cell membrane of some cells and
provides strength and support.
Correct Answer
A. Cell Wall
Explanation
The correct answer is "Cell Wall". The cell wall is a structure that surrounds the cell membrane in some cells, such as plant cells, and provides strength and support. It helps to maintain the shape of the cell and protect it from external stresses. The cell wall is composed of cellulose and other materials, and it acts as a barrier, allowing substances to pass through selectively. It is an essential component of plant cells, providing rigidity and support to the plant's structure.
9.
Cell organelles found in plant and algae cells where
photosynthesis occurs.
Correct Answer
E. Chloroplasts
Explanation
Chloroplasts are cell organelles found in plant and algae cells where photosynthesis occurs. They contain a green pigment called chlorophyll, which captures sunlight and converts it into energy through the process of photosynthesis. This energy is used to produce glucose, a form of sugar that is essential for the plant's growth and survival. Chloroplasts also contain other pigments and enzymes that aid in the photosynthetic process. Therefore, chloroplasts play a crucial role in the production of food and oxygen in plants and algae.
10.
A small organelle in cells where proteins are made from amino
acids.
Correct Answer
D. Ribosome
Explanation
The ribosome is a small organelle in cells where proteins are made from amino acids. It is responsible for protein synthesis, which is a vital process for the functioning of cells. Ribosomes can be found in both prokaryotic and eukaryotic cells, and they are composed of RNA and proteins. During protein synthesis, the ribosome reads the genetic information from mRNA and assembles the amino acids in the correct order to form a protein. Therefore, the ribosome plays a crucial role in the production of proteins, which are essential for various cellular functions.
11.
A Community of organisms and their nonliving environment.
Correct Answer
B. Ecosystem
Explanation
An ecosystem refers to a community of organisms that live in a specific area and interact with each other and their nonliving environment. It includes both living organisms, such as plants, animals, and microorganisms, as well as the physical factors of the environment, such as temperature, sunlight, soil, and water. Ecosystems can vary in size and can be found in various locations, such as forests, deserts, and oceans. They are characterized by the flow of energy and the cycling of nutrients between organisms and their environment.
12.
A group of similar cells that work together to perform a specific
job in the body.
Correct Answer
C. Tissue
Explanation
Tissue is a group of similar cells that work together to perform a specific job in the body. It is the correct answer because the other options, such as organism, organ, cell membrane, and Golgi complex, do not accurately describe a group of cells working together. Organism refers to a complete living being, organ refers to a structure made up of different tissues, cell membrane is a protective layer around the cell, and Golgi complex is an organelle involved in packaging and transporting proteins.
13.
A group of individuals of the same species that live together in
the same area at the same time.
Correct Answer
C. Population
Explanation
A population refers to a group of individuals of the same species that live together in the same area at the same time. It is a fundamental ecological concept that helps us understand the dynamics and interactions within a species. By studying populations, scientists can analyze factors such as population size, density, distribution, and growth rate, which are crucial for understanding the overall health and sustainability of a species in its environment.
14.
Structures within a cell, sometimes surrounded by a membrane.
Correct Answer
B. Organelle
Explanation
Organelles are structures within a cell that are sometimes surrounded by a membrane. They perform specific functions necessary for the cell's survival and reproduction. Examples of organelles include the nucleus, mitochondria, endoplasmic reticulum, and Golgi apparatus. These structures are responsible for processes such as protein synthesis, energy production, and cellular transport. Therefore, organelles are the correct answer to the question.
15.
The cell organelle that modifies, packages, and transports
materials out of the cells.
Correct Answer
C. Golgi Complex
Explanation
The Golgi Complex is responsible for modifying, packaging, and transporting materials out of the cell. It receives proteins and lipids from the endoplasmic reticulum and modifies them by adding sugars and other molecules. It then packages these modified molecules into vesicles and transports them to their final destination within or outside the cell. The Golgi Complex plays a crucial role in the secretion of proteins, the formation of lysosomes, and the synthesis of cell wall materials in plant cells.
16.
A membrane covered compartment in an eukaryotic cell that forms
when part of the cell membrane surrounds and object.
Correct Answer
D. Vesicle
Explanation
A vesicle is a membrane-covered compartment in a eukaryotic cell that forms when part of the cell membrane surrounds an object. This allows for the transportation of molecules within the cell and between different parts of the cell. Vesicles play a crucial role in processes such as secretion, endocytosis, and exocytosis. They are involved in the transport of proteins, lipids, and other molecules, helping to maintain the overall organization and functioning of the cell.
17.
A special vesicle in cells that digest food particles, wastes,
and foreign invaders.
Correct Answer
A. Lysosomes
Explanation
Lysosomes are special vesicles in cells that are responsible for digesting food particles, wastes, and foreign invaders. They contain enzymes that break down these substances into smaller molecules that can be used by the cell or eliminated. Lysosomes play a crucial role in maintaining cellular homeostasis and protecting the cell from harmful substances. They are often referred to as the "garbage disposal" of the cell.
18.
An organelle found in plant and algae where photosynthesis
occurs.
Correct Answer
E. Chloroplasst
Explanation
Chloroplasts are the organelles found in plant and algae cells where photosynthesis occurs. During photosynthesis, chloroplasts capture sunlight and convert it into chemical energy, which is then used to produce glucose and oxygen. This process is essential for the plant's survival as it provides energy for growth and development. Chloroplasts contain chlorophyll, a pigment that gives plants their green color and is responsible for absorbing light energy. Without chloroplasts, plants would not be able to carry out photosynthesis and produce their own food. Therefore, the correct answer is Chloroplast.
19.
Extremely small single celled organisms without a nucleus.
Correct Answer
C. Bacteria
Explanation
Bacteria are extremely small single-celled organisms without a nucleus. They are prokaryotic, meaning they lack a membrane-bound nucleus. Bacteria are distinct from eukaryotic organisms, which have a true nucleus. Bacteria are found in various environments and can have different shapes, such as rods, spheres, or spirals. They play important roles in various ecological processes and can be both beneficial and harmful to humans.