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Biology
Where does photosynthesis take place?
A
Mitochondria
B
Chloroplast
C
Nucleus
D
Ribosome
Correct Answer
B
Biology
Which organ pumps blood throughout the human body?
A
Brain
B
Heart
C
Kidney
D
Liver
Correct Answer
B
Biology
Which type of immunity is acquired when a person receives ready-made antibodies from another individual, such as a mother to a fetus via the placenta?
A
Active immunity
B
Passive immunity
C
Innate immunity
D
Cell-mediated immunity
Correct Answer
B
Biology
What type of cellular transport mechanism moves substances against their concentration gradient and requires the expenditure of cellular energy (ATP)?
A
Simple diffusion
B
Facilitated diffusion
C
Active transport
D
Osmosis
Correct Answer
C
Biology
What name is given to the microscopic pores found on the surfaces of plant leaves that regulate gas exchange and water vapor loss?
A
Stomata
B
Lenticels
C
Trichomes
D
Hydathodes
Correct Answer
A
Biology
In which organ of the human digestive tract does the vast majority of chemical digestion and nutrient absorption take place?
A
Stomach B) C) D)
B
Small intestine
C
Large intestine
D
Esophagus
Correct Answer
B
Biology
Which nitrogenous base is found in RNA molecules but is completely absent from DNA molecules?
A
Adenine
B
Thymine
C
Uracil
D
Cytosine
Correct Answer
C
Biology
In which specific part of the mitochondrion does the citric acid cycle (Krebs cycle) take place?
A
Inner mitochondrial membrane
B
Mitochondrial matrix
C
Intermembrane space
D
Outer membrane
Correct Answer
B
Biology
What zone of an aquatic ecosystem receives enough sunlight to allow photosynthesis to occur?
A
Aphotic zone
B
Photic zone
C
Benthic zone
D
Abyssal zone
Correct Answer
B
Biology
What molecular technique allows scientists to make millions of copies of a specific DNA segment rapidly for research or forensic analysis?
A
Gel electrophoresis
B
Western blotting
C
Polymerase chain reaction (PCR)
D
DNA sequencing
Correct Answer
C