BioExam2Key - BIOLOGY 101 AND 102 ANSWERS FOR THE SECOND...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
BIOLOGY 101 AND 102 BIOLOGY 101 AND 102 ANSWERS FOR THE SECOND LECTURE EXAM, FALL 2005 Answers are in bold typeface 1. Which of the following is closest to the number of protein-coding genes across all of the chromosomes in a human body cell, as determined by the Human Genome Project? A. About 30,000 a. About 300,000 b. About 3 million c. About 30 million d. About 300 million 2. Most of the DNA in a human cell codes for proteins: a. True b. False 3. Which of the following is true of restriction enzymes? a. They cut specific sequences of amino acids in proteins b. They cut specific sequences of DNA nucleotides c. They cut specific sequences of mRNA codons d. They cut proteins away from fats in cell membranes e. They cut proteins away from sugars in cell membranes 4. What natural process is mimicked in the lab when we use the PCR (polymerase chain reaction) technique? a. Mutation of a gene b. Protein synthesis in ribosomes c. Angiogenesis d. Replication of DNA 5. Into what structures can we place human genes so that bacteria will then produce human proteins? a. Acrosomes b. Ribosomes c. Plasmids d. Mitochondria 1
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
6. ‘Golden rice’ has been genetically engineered. What is so special about this modified food plant? a. It produces its own insect-killing chemicals b. It contains high levels of certain vitamins c. It produces insulin, a human hormone used to treat diabetes d. It is resistant to the poisonous effects of certain weed-killers e. It produces human growth hormone 7. ‘Round-up Ready soybeans’ have been genetically engineered. What is so special about this modified food plant? a. It produces its own insect-killing chemicals b. It contains high levels of certain vitamins c. It produces insulin, a human hormone used to treat diabetes d. It is resistant to the poisonous effects of certain weed-killers e. It produces human growth hormone 8. If two carriers of a recessive genetic disease visit a genetic counselor, what will that person tell them about the chances that they will produce an unhealthy child? a. The chances are 1 in 4 b. The chances are 2 in 4 c. The chances are 3 in 4 d. Sorry – the chances are 100% 9. If a mother who is heterozygous and a father who is homozygous for a recessive genetic disease visit a genetic counselor, what will that person tell them about the chances that they will produce an unhealthy child? a. The chances are 1 in 4 b. The chances are 2 in 4 c. The chances are 3 in 4 d. Sorry – the chances are 100% 10. How many chromosomes would you expect to find in a normal human body cell (such as a skin or liver cell)? a. 46 b. 26 c. 16 d. 36 11. How many chromosomes would you expect to find in a normal human egg or sperm cell? a.
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 9

BioExam2Key - BIOLOGY 101 AND 102 ANSWERS FOR THE SECOND...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online