BIO Test 2 – Flashcards

In a DNA double helix an adenine of one strand always pairs with a(n) _____ of the complementary strand, and a guanine of one strand always pairs with a(n) _____ of the complementary strand. cytosine ... thymine uracil ... cytosine thymine ... cytosine guanine ... adenine cytosine ... uracil

If one strand of a DNA double helix has the sequence GTCCAT, what is the sequence of the other strand? CUGGTU TGAACG ACTTGC CAGGUA CAGGTA

Which one of the following is a list of the four bases contained in DNA? guanine, pyroline, thymine, uracil adenine, guanine, cytosine, thymine adenine, guanine, purine, thymine adenine, guanine, uracil, thymine cytosine, guanine, thymine, uracil

A major characteristic of the structure of DNA is that __________. the ratio of A to T is close to 1:1 and the ratio of G to C is close to 1:1 A + G = C + G A + T = G + C the ratio of A to C is close to 1:1 and the ratio of G to T is close to 1:1 the ratio of A to G is close to 1:1 and the ratio of T to C is close to 1:1

In a DNA double helix, adenine pairs with ______ and guanine pairs with ______. cytosine . . . thymine uracil . . . cytosine cytosine . . . uracil thymine . . . cytosine guanine . . . adenine

One strand of a DNA molecule has the base sequence ATAGGT. The complementary base sequence on the other strand of DNA will be _____. TGGAUA UAUCCA TATCCA TGGATA ATAGGT

If adenine makes up 20% of the bases in a DNA double helix, what percent of the bases are guanine? 20% 40% 60% 30% 80%

RNA contains the nitrogenous base ______ instead of ______, which is only found in DNA. uracil . . . thymine a deoxyribose sugar . . . a ribose sugar cytosine . . . guanine nucleotides . . . nucleic acids adenine . . . guanine

Genetic information is transferred from the nucleus to the cytoplasm of eukaryotic cells in the form of _____. mRNA lipids sterols carbohydrates proteins

When messenger RNA (mRNA) is being made, the RNA base _____ always pairs with the base _____ in DNA. A ... U T ... A U ... A T ... G U ... T

The DNA code is CGT. What is the sequence of nucleotides in the transcribed mRNA? GCA TCU CTA ATU UCG

The flow of information in a cell proceeds __________. from DNA to RNA to protein from RNA to DNA to protein from RNA to protein to DNA from protein to RNA to DNA from DNA to protein to RNA

If a strand of DNA has the sequence AAGCTC, transcription will result in a(n) ______ single RNA strand with the sequence UUCGAG DNA double helix with the sequence AAGCTC for one strand and TTCGAG for the complementary strand single RNA strand with the sequence TTCGAG single DNA strand with the sequence TTCGAG RNA double helix with the sequence UUCGAG for one strand and AAGCUC for the complimentary strand

A gene is usually __________. the same thing as a chromosome made by a ribosome made of RNA the information for making a polypeptide made of protein

Which of the following treatments with stem cells is currently most likely to be effective? Giving them to a person with multiple sclerosis. Injecting them into the spinal cord of a paraplegic. Injecting them into a lung cancer patient. Bone marrow transplant.

Which of the following is true? Embryonic stem cells do not contain DNA. All cells in the human body can be traced back to an embryonic stem cell. Adult stem cells turn into embryonic stem cells. Adult stem cells turn into embryonic stem cells.

Which of the following is true? Your cheek cells contain the same DNA as your brain cells. Your cheek cells have the exact DNA as your mother's cheek cells. Your cheek cells have about 75% of the same DNA as your brain cells. All human cheek cells have identical DNA.

You are part of a research team working on developing a stem cell treatment for amyotrophic lateral sclerosis. What type of cells are you trying to repair? bone blood nerve muscl

Your uncle has a stem cell treatment in which he has skin cells injected into his lungs. A benign tumor of skin cells resulted. What is this called? a hematoma a sarcoma a melanoma a teratoma