Biology 100 UNLV (Dr. Jeff Jaeger) Exam 2 Study Guide Questions with Verified Solutions
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Course
Biology 100 UNLV
Institution
Biology 100 UNLV
Biology 100 UNLV (Dr. Jeff Jaeger) Exam
2 Study Guide Questions with Verified
Solutions
**Define nucleotide.** Fundamental units that repeat in DNA molecules.
**List the names of nucleotides.** Adenine & thymine, Guanine & cytosine.
**Where can nucleotides typically be found?** They...
Biology 100 UNLV (Dr. Jeff Jaeger) Exam 2 Stud y Guide Questions with Verified Solutions **Define nucleotide.** ✔✔ Fundamental units that repeat in DNA molecules. **List the names of nucleotides.** ✔✔ Adenine & thymine, Guanine & cytosine. **Where can nuc leotides typically be found?** ✔✔ They are located within DNA. **Define gene.** ✔✔ A segment of DNA that specifies a particular protein. **What does DNA transcribe (code) to?** ✔✔ RNA. **How many strands does RNA have?** ✔✔ RNA consists of one strand. **Identify the DNA nucleotides transcribed into RNA nucleotides.** ✔✔ Adenine → Uracil, Thymine → Adenine, Guanine → Cytosine, Cytosine → Guanine. **Define codon.** ✔✔ A triplet code used in RNA. **How many types of amino acids are there?** ✔✔ There are 20 amino acids. **Define chromatin.** ✔✔ Extended strands of DNA. **Define chromosome.** ✔✔ A packaged DNA molecule. **How many chromosomes do humans have?** ✔✔ Humans have 46 chromosomes. **Define chromatid.** ✔✔ One of two identical strands of a chromosome. **What do chromosomes look like?** ✔✔ **What does a sister chromatid look like?** ✔✔ It resembles an X shape. **Define centromere.** ✔✔ The central part of a chromosome. **Why do c ells undergo division?** ✔✔ Cells divide for growth, repair, and reproduction. **Define zygote.** ✔✔ A single cell formed by the union of sperm and egg. **How many zygotes do adults typically have?** ✔✔ Adults can have trillions of zygotes. **Define mit osis.** ✔✔ The process of cell division resulting in identical cells.
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