Unit 3 Semester Study Guide

The cell membrane is responsible for maintaining the integrity of the cell and regulating the passage of substances in and out of the cell. The other structures mentioned, nucleus, mitochondria, and endoplasmic reticulum, have different functions within the cell and are not directly involved in nutrient exchange.

Mitochondria are known as the powerhouse of the cell, producing ATP through cellular respiration, while chloroplasts are responsible for photosynthesis in plant cells, converting sunlight into energy. The other organelles mentioned do not play a direct role in energy conversion.

Mitochondria are known as the powerhouse of the cell and are responsible for the conversion of sugar into usable energy in the form of ATP. Chloroplasts are responsible for photosynthesis, Ribosomes are involved in protein synthesis, and Endoplasmic Reticulum is involved in protein and lipid metabolism.

Chloroplasts are the organelles responsible for photosynthesis in plants and some algae. They are where light energy is converted into sugar through the process of photosynthesis.

The cell wall is the rigid, outermost layer of a plant cell that provides structural support and protection. Chloroplasts are responsible for photosynthesis, mitochondria are the powerhouse of the cell, and vacuoles store water and maintain turgor pressure.

Plant cells have unique organelles such as cell wall for structural support and protection, and chloroplasts for photosynthesis. These organelles are not present in animal cells, which have alternative structures such as lysosomes for cellular waste management and mitochondria for energy production.

The correct answer includes organelles that are commonly found in both plant and animal cells. The incorrect answers are specific to either plant or animal cells, making them inaccurate for this question.

Chloroplasts are specialized organelles in plant cells that contain chlorophyll, allowing plants to undergo photosynthesis and convert light energy into chemical energy in the form of sugar. This process is essential for plant growth and survival.

Animal cells do not need chloroplasts because they obtain energy from the food they consume, rather than using photosynthesis like plant cells.

Mitochondria are the powerhouse of the cell responsible for converting sugar into usable energy through the process of cellular respiration. Both animal cells and plant cells require this energy conversion to function properly, which is why they both contain mitochondria.

The correct answer is 'Nucleus'. The nucleus contains the cell's DNA and is responsible for controlling gene expression and mediating cell division. While mitochondria are involved in energy production, ribosomes are responsible for protein synthesis, and the endoplasmic reticulum plays a role in protein and lipid synthesis, none of them specifically hold the hereditary information of the cell like the nucleus does.

The heredity material in a cell that carries genetic information is known as DNA, which stands for deoxyribonucleic acid. It is responsible for encoding the instructions necessary for the development, functioning, and reproduction of all living organisms.

DNA contains the genetic instructions necessary for the growth, development, functioning, and reproduction of an organism. It provides the blueprint for the structure and function of cells, tissues, and organs within the body.

Cells are the basic units of life, responsible for carrying out all the processes necessary for an organism to function. Organs, atoms, and tissues are all important components as well, but cells are the fundamental units that make up living organisms.

Multicellular organisms are made up of multiple specialized cells, like humans. Unicellular organisms are composed of a single cell, while bacterial organisms are a type of single-celled microorganisms. Plants are also multicellular organisms, but the specific question refers to a person, which is a more specific term for a multicellular human. Therefore, the correct answer is 'Multicellular'.

Plant and animal organs refer to specific parts of plants and animals that serve particular functions in their respective organisms. Rocks, earth, and clouds are not organs found in living organisms. Similarly, items like chairs, tables, and lamps are man-made objects and not organs. Lastly, cars, boats, and planes are machines used for transportation and do not qualify as organs in biology.

The correct order of levels of organization is from smallest to largest: cells, tissues, organs, organ systems, organism. This hierarchy represents how different structures in living organisms work together to form a functioning whole.

Tissues are specialized groups of cells that work together to perform specific functions within an organ. While cells are the basic building blocks of life, organelles are subunits within cells, and organisms are complete living beings.

In organizational levels, each smaller level typically has a specific function to perform, contributing to the overall functioning of the larger organization.

The skeletal system consists of bones, cartilage, ligaments, and tendons that provide structural support for the body. The muscles (Muscular system) work with the skeletal system to enable movement, the respiratory system is responsible for breathing, and the nervous system controls various bodily functions.

The reproductive system is specifically responsible for the production of offspring in living organisms, while the other systems listed have different functions related to digestion, respiration, and circulation.

The cardiovascular system, composed of the heart, blood vessels, and blood, is responsible for delivering nutrients and oxygen throughout the body. The other options listed, respiratory system, digestive system, and nervous system, play important roles in the body but do not primarily function to transport nutrients and oxygen.

The muscular system is responsible for the body's movement by contracting and relaxing muscles. It works in conjunction with the skeletal system to enable physical activity.

The cell membrane is the outer covering of a cell that separates it from the external environment. It controls the movement of substances in and out of the cell. The nucleus is the control center of the cell, the mitochondrion is the powerhouse of the cell, and the endoplasmic reticulum is involved in protein and lipid synthesis.

In the diagram, the letter B is pointing to the cell wall which provides structural support and protection to plant cells.

The letter C is pointing to the Nucleus, which is a membrane-bound organelle that contains genetic material of a cell.

The correct answer is Mitochondria, as it is the powerhouse of the cell responsible for generating most of the cell's supply of adenosine triphosphate (ATP), which is used as a source of chemical energy.

The correct answer is Chloroplast because it is an organelle in plant cells where photosynthesis takes place. Mitochondria, Nucleus, and Endoplasmic Reticulum are also organelles in cells but do not perform photosynthesis like the chloroplast.