Biology, 20.11.2020 03:10 sarahfsakrani
According to the primordial soup model, the first organic molecules could have
formed from simpler inorganic substances in Earth's early oceans, but only if there
were a source of energy to cause such chemical reactions to take place. Which are
possible sources of energy that could have led to the production of these first
precursors to life?
a. lightning and cellular respiration
b. nuclear radiation and photosynthesis
c. photosynthesis and cellular respiration
d. solar radiation, volcanic eruptions and lightning
Answers: 1
Biology, 21.06.2019 13:30
Plzz hurry im being timed during times of vigorous physical activity, muscles require a constant supply of oxygen. how does the body respond to these needs? a. breathing rate and heart rate both decrease. b. breathing rate and heart rate both increase. c. heart rate decreases, but breathing rate remains stable. d. breathing rate increases, but heart rate remains stable.
Answers: 1
Biology, 21.06.2019 15:30
Order the steps of protein synthesis. amino acids are lined up in a sequence. rna is modified into mrna. dna is transcribed. a ribosome binds to mrna. chemical bonds are formed and a protein is produced.
Answers: 3
Biology, 22.06.2019 08:30
Both male and female gametes are created during the process of meiosis. the formation of male gametes is called spermatogenesis. after telophase il of spermatogenesis, there would be are all genetically male gametes created that
Answers: 2
According to the primordial soup model, the first organic molecules could have
formed from simpler...
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