Imagine a primitive Earth where early life utilized arsenic instead of phosphorus in its biomolecules. Which crucial biomolecule would be MOST directly affected by this substitution?
Proteins
Lipids
Carbohydrates
Nucleic acids
Related Questions
The study of tissues is called:
Cytology
Histology
Morphology
Physiology
A hypothetical organism exhibits a unique genetic code where codons are composed of four nucleotides instead of three. If this organism utilizes 20 amino acids, what is the minimum number of different nucleotides required for its genetic code?
2
3
4
5
Which of the following is NOT a characteristic shared by all living organisms?
Cellular organization
Response to stimuli
Multicellularity
Adaptation
Which statement regarding phloem transport is incorrect?
It involves the movement of sugars.
It requires energy for active loading.
It occurs primarily by diffusion.
It is influenced by source-sink dynamics.
The hierarchical organization of life progresses from atoms to biosphere. Which level of organization represents interacting populations of different species in a given area?
Population
Ecosystem
Community
Biosphere
Which of these is NOT a branch of Chemistry?
Organic Chemistry
Inorganic Chemistry
Physical Chemistry
Astrology
Which of the following is NOT a taxonomic aid?
Herbarium
Museum
Botanical garden
Wildlife sanctuary
Binomial nomenclature was developed by:
Robert Hooke
Anton van Leeuwenhoek
Gregor Mendel
Carolus Linnaeus
Which level of protein structure is MOST directly affected by the formation of disulfide bridges?
Primary structure
Secondary structure
Tertiary structure
Quaternary structure
What is the most accurate description of the relationship between growth and development in living organisms?
Growth and development are synonymous processes.
Growth always precedes development.
Development always precedes growth.
Growth is a quantitative increase in size or mass, while development encompasses qualitative changes and differentiation.
