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Which condition is essential for natural selection to result in a new species?
a) unlimited resources
b) an inherited variation
c) a static environment
d) a long life span
What do all living organisms have in common in genetic material?
a) phosphate only
b) nitrogenous bases
c) sugar molecules
d) nucleotides
what elements do all biomolecules contain?
a) nitrogen, phosphorus, hydrogen
b) carbon , nitrogen, hydrogen
c) carbon, hydrogen, oxygen
d) carbon, hydrogen, nitrogen
Which of the following biomolecules typically contains both nitrogen and phosphate?
a) carbohydrates
b) lipids
c) proteins
d) nucleic acids
During DNA replication, what is responsible for unzipping the double strands.
a) DNA polymerase
b) helicase
c) RNA polymerase
d) Acetyl CoA enzyme
What is the end product of transcription in protein synthesis?
a) amino acids are combined in a long chain that creates a protein.
b) Triplets are attached to the mRNA and bring amino acids to the ribosome(rRNA).
c) An mRNA molecule is created and can move outside the nucleus to bind with a protein.
d) Amino acids combine in the nucleus of the cells and create the traits for the organism
What process in protein synthesis creates a copy of the DNA?
a) translation
b) transcription
c) replication
d) mutation
During which process does only half the chromosomes appear in the daughter cells?
a) fertilization
b) mitosis
c) meiosis
d) protein synthesis
What are genetic material named when thickening occurs during mitosis.
a) chromosomes
b) genes
c) DNA
d) amino acids
state the name of the biomolecule responsible for the genetic information in your cells.
a) carbohydrates
b) nucleic acids
c) proteins
d) lipids
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