What is the net yield of water molecules in photosynthesis?
Correct answer C. 0 molecule
Subject / 1,067 questions
MDCAT Biology MCQs
Page 30 of MDCAT Biology multiple-choice questions with answers. Tap an option to check yourself.
Page 30 of 54
- Biological Molecules 74
- Coordination and Control 72
- Biology Diagnostic 70
- Cell Structure and Function 67
- Biotechnology 65
- Reproduction 58
- Bioenergetics 55
- Circulation 50
- Inheritance 48
- Digestion 45
- Immunity 45
- Support and Movement 45
- Acellular Life (Viruses) 45
- Homeostasis 45
- Respiration and Gaseous Exchange 45
- Evolution 45
- Enzymes 45
- Cell Cycle 41
- Chromosome and DNA 40
- Biology Introduction 38
- Ecosystem 27
In which organisms do carotenoids perform a protective function?
Correct answer C. Both of these
What is the molecular formula of chlorophyll b?
Correct answer D. C55H70O6N4Mg
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Which molecule acts as the chemical link between catabolism and anabolism?
Correct answer A. ATP
The value of the resting membrane potential of a neuron is about?
Correct answer C. −0.07 V
What is the chemical nature of insulin and glucagon?
Correct answer C. Protein
When an action potential begins, Na⁺ gates open and Na⁺ ions flow in. What kind of process is this?
Correct answer A. Passive transport
Who was the first to put forward an objective definition of instinct?
Correct answer B. Darwin
What is the simplest form of learning?
Correct answer C. Habituation
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Gibberellins can substitute for which light, so promoting flowering in long-day plants?
Correct answer C. Red
Animals with the greatest number of similarities are grouped together in which category?
Correct answer A. Genus
Which of these relationships is NOT an example of symbiosis?
Correct answer D. Marchantia sporophyte and gametophyte
In most ecosystems, through which group does the greatest amount of energy flow?
Correct answer B. Herbivores
In humans, which structure is formed or modified from the embryonic gill pouches?
Correct answer D. Eustachian tube
About how long ago did the first eukaryotes appear?
Correct answer D. 1.5 billion
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According to Lamarck, evolution took place as a result of what?
Correct answer C. Inheritance of acquired characters
Which enzyme can break open a plasmid ring?
Correct answer D. Restriction endonuclease
In which disease is the transmembrane carrier for chloride ions not produced?
Correct answer D. Cystic fibrosis
How many main types of tRNA are there?
Correct answer C. 20
What is a genome?
Correct answer B. Full set of genes of an individual