1.
What is a Cell?
Correct Answer
B. The basic unit of all organisms
Explanation
A cell is the fundamental unit of all living organisms. It is the smallest structure that can perform all the necessary functions of life, such as metabolism, growth, and reproduction. Cells are the building blocks of tissues, organs, and ultimately, entire organisms. They contain genetic material, such as DNA, which carries the instructions for the development and functioning of the organism. Cells come in various shapes and sizes and can specialize to perform specific functions within an organism.
2.
what is Unicellular?
Correct Answer
C. An organism which is made of one cell
Explanation
The correct answer is "an organism which is made of one cell." Unicellular organisms are composed of a single cell and can carry out all necessary functions for survival within that one cell. This is in contrast to multicellular organisms, which are made up of multiple cells that are specialized to perform specific functions.
3.
what is Multicellular?
Correct Answer
C. An organism which is made of more than one cell
Explanation
Multicellular refers to an organism that is composed of multiple cells. This means that the organism has different specialized cells that work together to carry out various life processes. Unlike unicellular organisms, which are made up of only one cell, multicellular organisms have a higher level of complexity and organization. The cells in multicellular organisms are specialized to perform specific functions, such as muscle cells for movement or nerve cells for communication. This organization allows multicellular organisms to have a higher level of complexity and perform more complex tasks.
4.
Cell membrane is?
Correct Answer
A. Flexible structure which surrounds a cell and controls the movement of materials in and out of the cell
Explanation
The cell membrane is a flexible structure that surrounds a cell and is responsible for controlling the movement of materials in and out of the cell. It acts as a barrier, allowing certain substances to pass through while keeping others out. This selective permeability is crucial for maintaining homeostasis and regulating the internal environment of the cell. The cell membrane also plays a role in cell communication and recognition, as it contains various proteins and receptors that interact with other cells and molecules.
5.
Phospholipids is a type of molecule which regulates the transport of materials?
Correct Answer
A. True
Explanation
Phospholipids are indeed a type of molecule that regulates the transport of materials. They have a hydrophilic (water-loving) head and hydrophobic (water-fearing) tails, which allows them to form a bilayer in cell membranes. This arrangement creates a selectively permeable barrier that controls the movement of substances into and out of the cell. Phospholipids also play a crucial role in the formation of vesicles, which transport materials within the cell. Therefore, the statement "Phospholipids is a type of molecule which regulates the transport of materials" is true.
6.
Proteins are one type of biochemical which regulates the transport of materials?
Correct Answer
A. True
Explanation
Proteins are indeed one type of biochemical that play a crucial role in regulating the transport of materials. They can act as transporters, channels, or carriers, facilitating the movement of substances across cell membranes or within cells. These proteins help maintain the balance of ions, nutrients, and other molecules, ensuring proper functioning of cells and organisms. Therefore, the statement "Proteins are one type of biochemical which regulates the transport of materials" is true.
7.
what is Osmosis?
8.
what is Specialized cell?
Correct Answer
C. A cell which has a specific function to perform
Explanation
A specialized cell is a cell that has a specific function to perform within an organism. Unlike other cells, which may have more general functions, specialized cells are uniquely adapted to carry out specific tasks. These cells are often found in multicellular organisms and work together to form tissues, organs, and organ systems. Examples of specialized cells include red blood cells, which are specialized for carrying oxygen, and nerve cells, which are specialized for transmitting electrical signals.
9.
Active transport is?
Correct Answer
A. The movement of particles through a protein which requires energy
Explanation
Active transport is the process by which particles are moved through a protein, such as a membrane protein, against their concentration gradient. This movement requires energy, usually in the form of ATP (adenosine triphosphate), to be expended in order to drive the transport process. Unlike passive transport, which does not require energy and occurs along the concentration gradient, active transport allows particles to be transported from an area of lower concentration to an area of higher concentration. This process is essential for various cellular functions, such as nutrient uptake and waste removal.
10.
what is Passive transport?
Correct Answer
B. The movement of particles through a protein which does NOT require energy
Explanation
Passive transport refers to the movement of particles through a protein without requiring any energy. This process occurs along a concentration gradient, where particles move from an area of higher concentration to an area of lower concentration. Unlike active transport, which requires energy, passive transport relies on the natural movement of particles to achieve equilibrium. This can happen through various mechanisms such as diffusion, osmosis, or facilitated diffusion, where proteins act as channels or carriers to facilitate the movement of particles across the cell membrane.
11.
What is tissue?
12.
a Organ is a group of tissues which work together to perform a specific function?
Correct Answer
A. True
Explanation
An organ is indeed a group of tissues that work together to perform a specific function. Tissues are groups of cells that have a similar structure and function, and when different types of tissues come together, they form an organ. Each organ has a specific role in the body and contributes to the overall functioning of the organism. Therefore, the statement that an organ is a group of tissues working together to perform a specific function is correct.
13.
a Organ system is a group of organs which work together to perform a specific function?
Correct Answer
A. True
Explanation
An organ system is indeed a group of organs that work together to perform a specific function. Each organ within the system has a unique role, but they all collaborate to achieve a common goal. This coordination allows the body to carry out complex tasks and maintain homeostasis. Therefore, the statement "Organ system is a group of organs which work together to perform a specific function" is correct.
14.
Organism is ?
Correct Answer
A. Anything which can independently carry out life processes
Explanation
An organism refers to any living entity that has the ability to independently carry out life processes. This means that it can perform functions such as growth, reproduction, metabolism, and response to stimuli without relying on another organism for survival. Organisms can range from single-celled microorganisms to complex multicellular organisms like plants and animals. They are characterized by their ability to maintain homeostasis and adapt to their environment.
15.
diffusion is?
Correct Answer
A. The movement of particles from an area of high concentration to low concentration
Explanation
Diffusion is the process by which particles move from an area of high concentration to an area of low concentration. This occurs due to the random motion of particles and the tendency for them to spread out and achieve a more uniform distribution. This movement continues until equilibrium is reached, where the concentration of particles is the same throughout the system. Diffusion is a fundamental process in various biological, chemical, and physical systems, and it plays a crucial role in processes such as gas exchange in the lungs and the movement of nutrients across cell membranes.
16.
Semi-permeable is the characteristic of a material which allows only certain materials to pass through it?
Correct Answer
A. True
Explanation
Semi-permeable refers to the property of a material that allows only certain substances to pass through it. This means that the material selectively permits the passage of some molecules or ions while blocking others based on their size, charge, or other properties. Therefore, the statement "Semi-permeable is the characteristic of a material which allows only certain materials to pass through it" is correct.
17.
Permeable is the characteristic of a material which allows other substance to pass through it?
Correct Answer
A. True
Explanation
Permeable is indeed the characteristic of a material that allows other substances to pass through it. This means that the material has pores or openings that enable the movement of liquids or gases.