The reason cells stay small is most accurately stated as:
The surface area of a cell must heed exchange requirements.
The phospholipid bilayer that surrounds/maintains the integrity of a cell is called a:
The assisted transport of a molecule across the cell membrane without an expenditure of energy is known as:
An obvious dark-stained structure within the nucleus that contains ribosomal RNA is called the:
Which of the following is considered a basic tissue type? (ALL)
1. epithelial, 2. connective, 3. muscle, 4. nervous
Choose the correct statement regarding accessory organs of the integument...
Nails, hair, and glands are all structures of epidermal origin.
Choose the most correct statement concerning capillaries.
The only site of nutrient, gas exchange, and waste exchange is the capillaries.
Choose the correct statement concerning the heart. (ALL)
1. The heart is cone-shaped, 2. The heart is about the size of a human fist, 3. the heart is normally tilted toward the left, 4. The heart is between the lungs
______ pressure occurs when the ventricles are relaxing and ____ occurs when the heart ejects blood.
The major functions of the blood include:
1. Transporting oxygen, hormones, and nutrients, 2. Carrying waste products, 3. Regulating body temps and pH, 4. Fighting pathogens
Hemoglobin is ALL of the following:
1. Found in RBC's, 2. An oxygen transporter, 3. Required for cellular respiration, 4. The pigment that makes blood red
_____ exist in some bacteria and prevent them from being destroyed by phagocytic WBC's and certain one-celled organisms.
Under ideal conditions, some species of bacteria can double their numbers every 12 mins. This extraordinary ability is the result of bacteria being capable of:
Identify the positive contributions of some bacteria (ALL)
1. Bacteria can serve as decomposers in the environment, 2. Bacteria are important in the wine, cheese, and bread industry, 3. Bacteria are important in biotechnology, 4. Some bacteria are beneficial residents of the digestive tract
Choose the following statement that most accurately describes viruses. (ALL)
1. They contain a protein coat called a capsid, 2. They may contain genomic DNA or RNA, 3. They are acellular, 4. They are obligate intracellular parasites
Viruses are capable of multiplying in a host cell because:
Viral DNA instructs the cell to produce more of the virus
New viral pathogens can emerge when... (ALL)
1. They are transported to different parts of the world, 2. The virus mutates, 3. The virus can be transmitted by a new vector, 4. The immune system cannot recognize a change in the virus
The lymphatic system... (ALL)
1. Takes up excess tissue fluid, returns it to the bloodstream, 2. Absorbs fats in the intestines, 3. Helps the body defend against disease, 4. Includes the spleen, thymus, and tonsils
ALL of the following are considered a nonspecific defense. (4)
1. Barriers to entry, 2. Inflammatory reaction, 3. Natural killer cells, 4. Protective proteins
After being exposed to a contagious disease, Jennifer has accumulated a high level of antibodies, yet shows no sign of illness. She is exhibiting:
The functions of the digestive system include ALL of the following: (4)
1. To ingest food, 2. To digest food into small nutrients so that the molecules can pass through membranes, 3. To absorb nutrient molecules, 4. To eliminate indigestible remains
When you hold a piece of bread in your mouth, what enzyme initiates the process of starch digestion?
The rhythmic contractions of the digestive tract that allow movement of foodstuffs are called:
Choose the correct statement concerning the stomach. (ALL, 4)
1. Pepsin is an enzyme that helps break down proteins, 2. The pH of the stomach is about 2, 3. Alcohol is absorbed by the stomach, 4. Mucus serves as a protective secretion in the stomach
Hepatitis ___ is usually acquired through tainted blood. It can lead to chronic hepatitis, liver failure and death. There is no vaccine.
The process of filtering or removing dust and other particles in the upper respiratory tract is accomplished by ALL of the following (3):
1. Mucous, 2. Nasal hairs, 3. Cilia
What is the correct sequence of air movement during inspiration?
Pharynx, larynx, trachea, bronchi, bronchioles
The urinary system is important in the regulation of ALL these...(3)
1. Water content of the body, 2. Blood volume of the body, 3. pH of the blood
The higher the concentrations of salts in the blood, the ____ the blood volume and the ____ the blood pressure.
Scott does not understand why alcohol consumption increases urine production. How can this phenomenon be simply explained?
Alcohol inhibits ADH causing diuresis.
Hemodialysis may be used to accomplish ALL of the following: (3)
1. Remove nitrogenous wastes from the blood, 2. Remove toxins from the blood, 3. Add bicarbonate ions to the blood
Identify the major functions of the skeletal system. (ALL, 4)
1. Gives the body support and shape, 2. Protects vital organs, 3. Produces blood cells, 4. Stores essential minerals
The axial skeleton consists of 80 bones that include ALL of the following (3):
1. The skull, 2. The vertebral column, 3. The hyoid bone and ribcage