1.
The "protein factories" of the cell are the:
Correct Answer
B. Ribosomes
Explanation
Ribosomes are known as the "protein factories" of the cell because they are responsible for protein synthesis. These small organelles are found in the cytoplasm and on the endoplasmic reticulum. Ribosomes read the genetic information from the DNA and use it to assemble amino acids into proteins. They play a crucial role in cell growth, repair, and maintenance. The other organelles listed, such as the golgi apparatus, mitochondria, and lysosomes, have different functions within the cell and are not directly involved in protein synthesis.
2.
Two of these rod-shaped structures exist in every cell
Correct Answer
D. Centrioles
Explanation
Centrioles are rod-shaped structures that exist in every cell. They play a crucial role in cell division by organizing the microtubules that form the spindle apparatus. This apparatus helps in separating the chromosomes during cell division. Centrioles are typically found in pairs and are located in a region called the centrosome. Their presence in every cell makes them a correct answer to the question. Cilia, lysosomes, and ribosomes are also cellular structures, but they do not exist in every cell, making them incorrect options.
3.
Which choice functions in cell reproduction?
Correct Answer
C. Centrioles
Explanation
Centrioles are the choice that functions in cell reproduction. Centrioles play a crucial role in cell division by organizing and guiding the formation of the mitotic spindle, which helps in the separation of chromosomes during cell division. They are responsible for ensuring that each daughter cell receives the correct number of chromosomes. Therefore, centrioles are directly involved in the process of cell reproduction.
4.
This/these are the "chemical processing and packing centers" of cells
Correct Answer
D. Golgi apparatus
Explanation
The Golgi apparatus is responsible for chemical processing and packing in cells. It receives proteins and lipids from the endoplasmic reticulum and modifies them, adding carbohydrates and other molecules to create functional molecules. It then packages these molecules into vesicles for transport to other parts of the cell or for secretion outside of the cell. The Golgi apparatus plays a crucial role in sorting, modifying, and packaging molecules, making it the correct answer for this question.
5.
Stratified squamous epithelium assists the body by providing
Correct Answer
A. Protection against invasion by microorganisms
Explanation
Stratified squamous epithelium is a type of tissue that is found in areas of the body that are subjected to mechanical stress and potential invasion by microorganisms, such as the skin and the lining of the oral cavity. This type of epithelium consists of multiple layers of flat cells that provide a strong barrier against the entry of microorganisms. The cells in the outermost layer of the epithelium are constantly being shed and replaced, ensuring that any microorganisms that may have attached to the surface are removed. Therefore, the correct answer is "protection against invasion by microorganisms".
6.
Adrenosine triphosphate is the chemical substance that provides the energy required for
Correct Answer
B. Active transport
Explanation
Adenosine triphosphate (ATP) is a chemical substance that serves as the main energy source for cellular processes. Active transport is a process that requires energy to move molecules across a cell membrane against their concentration gradient. Therefore, ATP provides the energy required for active transport to occur.
7.
Is the sequence of base pairs in each gene of each chromosome that determines
Correct Answer
C. Heredity
Explanation
The sequence of base pairs in each gene of each chromosome determines heredity. Genes are made up of DNA, and the order of the base pairs in the DNA sequence determines the genetic code. This genetic code contains instructions for building and maintaining an organism, including traits that are passed down from parents to offspring. Therefore, the sequence of base pairs in each gene on each chromosome plays a crucial role in determining the hereditary characteristics of an individual.
8.
The internal living material of cells is/are the
Correct Answer
B. Cytoplasm
Explanation
The internal living material of cells is the cytoplasm. The cytoplasm is a jelly-like substance that fills the cell and contains various organelles, such as the mitochondria, endoplasmic reticulum, and Golgi apparatus. It is responsible for supporting and protecting the organelles within the cell, as well as facilitating various cellular processes, including metabolism and protein synthesis. The nucleus, plasma membrane, and centrioles are also important components of the cell, but they are not considered the internal living material of cells.
9.
Osmosis is the ________ of water across a selectively permeable membrane when some of the solutes cannot cross the membrane.
Correct Answer
A. Diffusion
Explanation
Osmosis is the process of water moving across a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration. In this process, the solutes themselves do not cross the membrane. Diffusion, on the other hand, is the movement of particles from an area of higher concentration to an area of lower concentration. Since osmosis involves the movement of water molecules, it is a type of diffusion. Therefore, diffusion is the correct answer.
10.
The energy required for active transport process is obtained from
Correct Answer
D. ATP
Explanation
Active transport is a process that requires energy to move molecules or ions across a cell membrane against their concentration gradient. ATP (adenosine triphosphate) is the main source of energy for cellular processes, including active transport. ATP molecules are broken down by enzymes, releasing energy that is used to power the active transport process. Therefore, ATP is the correct answer as it provides the energy required for active transport.
11.
Is the function of blood transportation?
Correct Answer
A. True
Explanation
Blood transportation is a vital function of the circulatory system. Blood carries oxygen, nutrients, hormones, and waste products throughout the body, ensuring that all organs and tissues receive what they need and waste is removed. It transports oxygen from the lungs to the cells and carbon dioxide from the cells to the lungs for exhalation. Additionally, blood transports nutrients absorbed from the digestive system to cells, carries hormones produced by glands to their target organs, and helps regulate body temperature. Therefore, the statement "The function of blood is transportation" is true.
12.
Blood is which type of tissue?
Correct Answer
C. Connective
Explanation
Blood is classified as connective tissue because it consists of cells suspended in a liquid extracellular matrix called plasma. Connective tissues are characterized by their ability to connect, support, and protect other tissues and organs in the body. In the case of blood, it connects various parts of the body by transporting oxygen, nutrients, hormones, and waste products. Additionally, blood also plays a role in immune responses, clotting, and maintaining homeostasis.
13.
Where is adipose tissue is located? (sentence punctuation isn't necessary)
Correct Answer
Under the skin, under the skin, UNDER THE SKIN, Below the skin, below the skin
Explanation
Adipose tissue is located under the skin or below the skin. This tissue is responsible for storing energy in the form of fat and providing insulation and cushioning to the body.
14.
Which type of epithelial tissue is located on the urinary bladder?
Correct Answer
B. Stratified transitional
Explanation
Stratified transitional epithelial tissue is located on the urinary bladder. This type of tissue is specialized to accommodate the stretching and expansion of the bladder as it fills with urine. The multiple layers of cells allow for flexibility and protection against leakage. The transitional epithelium is also capable of changing shape and stretching without tearing, making it ideal for the urinary bladder's function.
15.
What is the function of the connective tissue areolar?
Correct Answer
D. Connection
Explanation
The function of the connective tissue areolar is to provide a connection between various tissues and organs in the body. It acts as a binding material, holding structures together and allowing for movement and flexibility. Areolar tissue also plays a role in cushioning and protecting organs, as well as providing support to surrounding tissues. However, its primary function is to establish connections and maintain the structural integrity of the body.
16.
The location of this epithelial tissue is the surface layer of lining of the stomach, intestines, & parts of the respiratory tract. Choose the correct epithelial tissue:
Correct Answer
A. Simple columnar
Explanation
Simple columnar epithelial tissue is the correct answer because it is found in the surface layer of the lining of the stomach, intestines, and parts of the respiratory tract. This type of tissue is characterized by its tall, column-shaped cells that are closely packed together. It functions to absorb nutrients and secrete mucus in the digestive tract, as well as to protect and move mucus in the respiratory tract.
17.
Where is homeopoietic connective tissue located?
Correct Answer
B. Red bone marrow
Explanation
Red bone marrow is the correct answer because it is the specific location where homeopoietic connective tissue is found. Homeopoietic connective tissue is responsible for the production of blood cells, including red blood cells, white blood cells, and platelets. It is located within the spongy bone tissue of certain bones, such as the sternum, ribs, pelvis, and long bones of the arms and legs.
18.
The function of this muscle tissue is the contraction of the heart. (no punctuation is necessary after the word)
Correct Answer
Cardiac, cardiac, CARDIAC
Explanation
The given correct answer is "Cardiac, cardiac, CARDIAC". This answer is correct because it correctly identifies the type of muscle tissue being referred to, which is cardiac muscle tissue. Cardiac muscle tissue is responsible for the contraction of the heart, allowing it to pump blood throughout the body. The repetition of the word "cardiac" in different cases (upper and lower case) may indicate emphasis or reinforcement of the importance of this type of muscle tissue in the heart's function.
19.
Match the term listed to its corresponding word/pharse:Integumentary
Correct Answer
A. Hair
Explanation
The term "Integumentary" refers to the skin, which includes hair as one of its components. Hair is a filamentous structure that grows from the epidermis of the skin. It serves various functions such as protection, insulation, and sensory perception. Therefore, hair is the correct answer for the term "Integumentary".
20.
Match the term listed to its corresponding word/pharse:Skeletal
Correct Answer
E. Joints
Explanation
Joints are the correct term that corresponds to the word/phrase "Skeletal". Joints are the points where two or more bones meet in the skeletal system. They allow movement and provide flexibility to the body. Hair, spinal cord, hormones, and tendons are not directly related to the skeletal system and do not correspond to the term "Skeletal".
21.
Match the term listed to its corresponding word/pharse:Muscular
Correct Answer
D. Tendons
Explanation
Tendons are fibrous connective tissues that connect muscles to bones, allowing for movement and stability. They are responsible for transmitting the force generated by muscles to the bones, enabling us to move our body parts. The other terms listed - hair, spinal cord, hormones, and joints - do not have a direct association with the term "muscular" and therefore, do not correspond to it.
22.
Match the term listed to its corresponding word/pharse:Nervous
Correct Answer
B. Spinal cord
Explanation
The term "nervous" is matched with "spinal cord" because the spinal cord is a crucial part of the nervous system. It is responsible for transmitting signals between the brain and the rest of the body, allowing for communication and coordination of various bodily functions.
23.
Match the term listed to its corresponding word/pharse:Endocrine
Correct Answer
C. Hormones
Explanation
The term "endocrine" refers to a system in the body that produces and releases hormones. Hormones are chemical messengers that regulate various bodily functions and processes. Therefore, the correct match for "endocrine" is "hormones."
24.
Match the term listed to its corresponding word/pharse:Esophagus
Correct Answer
D. Digestive
Explanation
The term "Esophagus" refers to a part of the human body that is involved in the process of digestion. It is a muscular tube that connects the throat to the stomach, allowing food to pass from the mouth to the stomach for further digestion and absorption of nutrients. Therefore, the correct corresponding word/phrase for "Esophagus" is "digestive".
25.
Match the term listed to its corresponding word/pharse:Ureters
Correct Answer
B. Urinary
Explanation
The term "Ureters" corresponds to the word "urinary". The ureters are tubes that connect the kidneys to the bladder and are part of the urinary system. They carry urine from the kidneys to the bladder, where it is stored before being eliminated from the body.
26.
Match the term listed to its corresponding word/pharse:Larynx
Correct Answer
D. Respiratory
Explanation
The term "Larynx" corresponds to the word/phrases "respiratory" because the larynx is a part of the respiratory system. It is commonly known as the voice box and is responsible for producing sound and protecting the airway during breathing. The larynx plays a crucial role in the process of respiration by allowing air to pass through and facilitating vocalization.
27.
Match the term listed to its corresponding word/pharse:Genitalia
Correct Answer
E. Reproductive
Explanation
The term "genitalia" refers to the reproductive organs of an organism. Therefore, the correct corresponding word/phrase for "genitalia" is "reproductive".
28.
Match the term listed to its corresponding word/pharse:Spleen
Correct Answer
B. Lymphatic
Explanation
The term "spleen" corresponds to the word/phrase "lymphatic." The spleen is an organ located in the lymphatic system, which is responsible for filtering and storing lymph fluid, as well as producing immune cells. It plays a vital role in the body's defense against infections and diseases.
29.
Match the term listed to its corresponding word/pharse:Capillaries
Correct Answer
A. Circulatory
Explanation
The term "Capillaries" corresponds to the word "circulatory" because capillaries are tiny blood vessels that connect arteries and veins, allowing for the exchange of oxygen, nutrients, and waste products between the blood and the surrounding tissues. The circulatory system is responsible for transporting blood throughout the body, and capillaries play a crucial role in this process.
30.
Which of the following is NOT an accessory organ of the female reproductive system?
Correct Answer
B. Gonads
Explanation
Gonads are not an accessory organ of the female reproductive system. The gonads, which are the ovaries in females, are primary reproductive organs responsible for producing eggs and sex hormones. The vagina, mammary glands, and fallopian tubes are all accessory organs that support the reproductive process. The vagina serves as the birth canal and receives the penis during sexual intercourse. The mammary glands produce milk for breastfeeding. The fallopian tubes transport eggs from the ovaries to the uterus for fertilization.
31.
Appendages of the integumentary system include all of the following EXCEPT:
Correct Answer
D. Hormones
Explanation
The integumentary system is responsible for protecting the body from external factors. It includes various appendages such as nails, sweat glands, and oil-producing glands, which play a role in maintaining the health and function of the skin. However, hormones are not considered appendages of the integumentary system. Hormones are chemical messengers produced by various glands in the body, such as the endocrine glands, and they regulate various bodily functions. While hormones can have an impact on the skin, they are not directly part of the integumentary system's appendages.
32.
Which of the following is NOT an endocrine gland?
Correct Answer
D. Vas deferens
Explanation
The vas deferens is not an endocrine gland because it is a part of the male reproductive system responsible for transporting sperm from the epididymis to the urethra. Endocrine glands secrete hormones directly into the bloodstream, while the vas deferens has a different function related to reproduction.
33.
Which of the following is NOT a primary organ of the digestive system?
Correct Answer
C. Liver
Explanation
The liver is not a primary organ of the digestive system. While it plays a crucial role in digestion by producing bile, which helps break down fats, it is not directly involved in the physical breakdown or absorption of food. The primary organs of the digestive system are the mouth, esophagus, stomach, and small and large intestines, where the majority of digestion and absorption occur. The rectum, although not a primary organ, is part of the digestive system as it is responsible for storing and eliminating waste.
34.
A structure made up of two or more kinds of tissues organized to perform a more complex function than a tissue alone is a(n):
Correct Answer
B. Organ
Explanation
An organ is a structure made up of two or more kinds of tissues organized to perform a more complex function than a tissue alone. Unlike a single tissue, an organ has a specific role and function within the body. It is composed of different types of tissues that work together to carry out a specialized task. Organs can be found in various systems of the body and are essential for the overall functioning and well-being of an organism.
35.
Oil glands belong to which system?
Correct Answer
B. Integumentary
Explanation
Oil glands belong to the integumentary system because they are responsible for producing and secreting oil, or sebum, onto the skin's surface. The integumentary system includes the skin, hair, nails, and various glands, such as sweat glands and oil glands. These glands play a crucial role in maintaining the health and function of the skin by producing substances that protect and moisturize it. Therefore, oil glands are an integral part of the integumentary system.
36.
Which system do tonsils belong to?
Correct Answer
C. Lymphatic
Explanation
Tonsils belong to the lymphatic system. The lymphatic system is responsible for maintaining the body's immune system by producing and transporting lymphocytes, which are a type of white blood cell that helps fight off infections. Tonsils are small masses of tissue located at the back of the throat and are part of the lymphatic system's defense against pathogens that enter through the mouth and nose. They help to filter out bacteria and other harmful substances before they can enter the rest of the body.
37.
Which system does the appendix belong to?
Correct Answer
A. Digestive
Explanation
The appendix belongs to the digestive system. It is a small, finger-shaped organ located at the junction of the small and large intestines. Although its exact function is not fully understood, it is believed to play a role in immune function and the storage of beneficial bacteria. It is not part of the female reproductive system, urinary system, or integumentary system.
38.
Which system does the thyroid belong to?
Correct Answer
D. Endocrine
Explanation
The thyroid belongs to the endocrine system. The endocrine system is responsible for producing and releasing hormones that regulate various bodily functions. The thyroid gland, located in the neck, produces hormones that control metabolism, growth, and development. These hormones are released into the bloodstream and affect cells throughout the body. Thus, the thyroid is an integral part of the endocrine system.
39.
Which one of these words does NOT belong with the others?
Correct Answer
D. Tendons
Explanation
Cartilage, joints, and ligaments are all connective tissues found in the body that help support and connect different parts. Tendons, on the other hand, are not connective tissues but are rather fibrous cords that connect muscles to bones. Therefore, tendons do not belong with the others as they have a different function and structure.