Exam (elaborations)
CELLULAR FOUNDATIONS IN BIOCHEMISTRY EXAM QUESTIONS AND ANSWERS
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CELLULAR FOUNDATIONS IN BIOCHEMISTRY EXAM QUESTIONS AND ANSWERS...
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The simplest elements ______________were formed. - ANSWER (hydrogenand helium)
What happened 15-20 billion years ago? - ANSWER There was a cataclysmic
eruption of hot, energy-rich subatomic particles.
It is called the dying star. - ANSWER Supernova
Supernovae (Plural Form)
How many years ago when the earth was formed? - ANSWER 4.6 Billion
years ago
What is the early earth called? - ANSWER Dynamic
Chemical formed except oxygen: - ANSWER • Nitrogen
• Nitrogen
oxides
• Carbon
dioxide
• Methane
• Ammonia
• Hydrogen
• Hydrogen
Sulfide
A collection of chemicals trapped within membranes. - ANSWER
PROTOBIONT
-the first living things
- arose between 3.9
and 3.5 billion years
ago - ANSWER PROKARYOTES
, Earth's first photosynthesizers - ANSWER The cyanobacteria: appeared 2.4
billion years ago, set the
stage for a remarkable transformation
Eukaryotes probably evolved by a
process called _________________ A symbiotic relationship where one
organism lives inside the other. - ANSWER Endosymbiosis
First eukaryotic cell called________. - ANSWER Algae
The start of the multicellular life: - ANSWER EUKARYOTES
The first animals - ANSWER Sponges
Sponges get their nutrition by? - ANSWER filtering food particles from the
water.
Today, our ecosystems are structured by ________. - ANSWER feeding
relationships
The Necessary Features of Living Organisms
(MRS H. GREN) - ANSWER Movement, Respiration, Sensitivity,
Homeostasis, Growth, Reproduction, Excretion, Nutrition
movement response to light - ANSWER phototropism
movement response to gravity - ANSWER Gravitropism
sensitivity to light - ANSWER Phototaxis
sensitivity to chemicals - ANSWER Chemotaxis
It is to maintain balance, example is thermoregulation. - ANSWER
Homeostasis
What are the 4 Cellular components that all living organisms have? (CCDR) -
ANSWER 1. Cell Membrane
2. Cytoplasm
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