All animals need oxygen gas (O2 ) for their primary cellular-level functioning. Inside the cell, O2 is split apart into oxygen atoms. Eventually, electrons that are flowing through the cell will be "received" by this oxygen
But first, the electrons combine with protons present in the cell to form a basic element that has a single proton and a single electron. Then this element combines with the oxygen to form a certain chemical compound.
In this scenario, what chemical compound is produced when this element combines with oxygen?
A) Bicarbonate (HCO3 ) B) Water (H2O)
C) Carbon dioxide (CO2 ) D) Ozone (O3)
B
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Which organisms have four-chambered hearts?
a. amphibians and most reptiles b. fish c. arthropods d. birds and mammals e. earthworms
If alleles L, M, and N are on the maternal
chromosome and l, m, and n are on the paternal chromosome, the only way that a gamete from a heterozygote will produce a gamete with alleles l, m, and N is through a. nondisjunction. b. the laws of segregation. c. the law of independent assortment. d. crossing over. e. chromosome aberration.
A codon consists of 5 bases in a mRNA molecule
a. true b. false
Cytokinesis takes place during metaphase
Indicate whether the statement is true or false