#1
Which of the following structures is responsible for the production of ATP in a cell?
Mitochondria
ExplanationMitochondria produce ATP through cellular respiration.
#2
What is the function of a microscope's condenser?
To focus light onto the specimen
ExplanationThe condenser concentrates light onto the specimen for better visibility.
#3
What is the function of a centrifuge in a laboratory?
To separate components of a mixture based on density
ExplanationCentrifuge separates components by spinning based on density differences.
#4
Which of the following is NOT a type of microscope commonly used in biological laboratories?
Geological microscope
ExplanationA geological microscope is not typically used in biological labs.
#5
What is the function of a coverslip in microscopy?
To hold the specimen in place
ExplanationCoverslip secures the specimen on the microscope slide.
#6
Which of the following is NOT a component of the cell membrane?
Nucleic acids
ExplanationNucleic acids are not part of the cell membrane structure.
#7
Which organelle is responsible for the synthesis of proteins in a cell?
Ribosome
ExplanationRibosomes are the cellular structures responsible for protein synthesis.
#8
Which of the following is NOT a type of tissue found in the human body?
Ionic tissue
ExplanationIonic tissue is not a recognized category of human body tissues.
#9
What is the purpose of a microtome in a laboratory setting?
To slice thin sections of tissue for microscopic examination
ExplanationMicrotome is used to cut thin slices of tissue for microscopic study.
#10
What is the function of a hemocytometer?
To count cells in a sample
ExplanationHemocytometer is used for manual counting of cells in a sample.
#11
Which of the following is a common fixative used to preserve biological specimens?
Formalin
ExplanationFormalin is a commonly used fixative to preserve biological specimens.
#12
What is the primary function of a spectrophotometer in a laboratory?
To measure the concentration of substances in a solution
ExplanationSpectrophotometer quantifies substance concentration in solutions.
#13
Which of the following is a type of staining technique used in microscopy to visualize lipids?
Oil Red O staining
ExplanationOil Red O staining is used to visualize lipid deposits in tissues.
#14
Which of the following is NOT a type of epithelial tissue?
Adipose epithelium
ExplanationAdipose tissue is a connective tissue, not an epithelial type.
#15
Which of the following is a common stain used in histology to distinguish cell nuclei?
Hematoxylin
ExplanationHematoxylin is a stain that highlights cell nuclei in histological sections.
#16
Which of the following is NOT a function of a microtubule in a cell?
Synthesizing proteins
ExplanationMicrotubules provide structural support, not involved in protein synthesis.
#17
What is the function of a microfuge tube in a laboratory?
To centrifuge small volumes of liquid
ExplanationMicrofuge tubes are used to spin small liquid volumes in a centrifuge.
#18
Which of the following is a commonly used fluorescent dye in microscopy to label DNA?
Hoechst stain
ExplanationHoechst stain is frequently used to fluorescently label DNA in microscopy.
#19
Which of the following is a commonly used stain in histology to visualize connective tissue?
Masson's trichrome
ExplanationMasson's trichrome stain is commonly used to visualize connective tissue in histology.