Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
55 Cards in this Set
- Front
- Back
|
Somatic cell increases in the body by: A. apoptosis B. replication C. cell division D. transformation |
cell divison |
|
|
Programmed cell death is known as: A. apoptosis B. replication C. cell division D. cancer |
Apoptosis |
|
|
The orderly set of stages that occur between the time a cell divides and the time the resulting daughter cell divide is known as: A. apoptosis B. cell cycle C. cell division D. cancer |
Cell Cycle |
|
|
The nucleus divides during: A. cytokinesis B. replication C. mitosis D. transformation |
mitosis |
|
|
Internal and external signals control: A. The cell cycle B. the caspases C. replication D. chromosome produciton |
the cell cycle |
|
|
Cancer cells formation may be aided by:
B. checkpoints C. oncogenes D. proto-oncogenes |
oncogenes |
|
|
These encode proteins that stop the cell cycle and promote apoptosis: A. tumor suppressor genes B. proto-oncogenes C. glycosyltransferases D.chromosomes |
Proto-oncogenes |
|
|
Carcinogenesis is the development of: A. genes B. chromosomes C. DNA D. cancer |
cancer
|
|
|
Cells that have a pair of each type of chromosome are known as: A. haploid B. diploid C.triploid D. polyloid |
Diploid |
|
|
Human cell body cells have: A. 23 chromosomes B. 80 chromosomes C. 46 chromosomes D. 100 chromosomes |
46 chromosomes |
|
|
Which of the following does not occur during mitosis? A. nuclear division in which chromosomes number stays constant B. one 2n cell becomes two 1n cells C. DNA replication produces duplicated chromosomes D. sister chromatids are genetically identical |
one 2n cell becomes two 1n cells ( one 2n cell becomes two 2n cells) |
|
|
Human eggs and sperm have _______ chromosomes. A. 23 B. 80 C.46 D.100 |
23 |
|
|
During which phase of mitosis will cytokinesis occur? A. prophase C.anaphase D. telophase |
telophase |
|
|
During which phase of mitosis will the nuclear membrane disappear? A.prophase B. metaphase C. anaphase D. telophase |
Prophase |
|
|
A cleavage furrow develops between daughter and nuclei during: A. apoptosis B.centromere division C. chromatin condensing D. cytokinesis |
cytokinesis |
|
|
Which of the following does not occur during cytokinesis of plant cells? A. build a new cell wall between daughter cells B. cell plate forms C. vesicle membrane complete plasma membrane D. a cleavage furror forms |
a cleavage furrow forms |
|
|
Meiosis: A.occurs in the life cycle of sexually reproducing organisms B. increases the number of chromosomes C. provides offspring with a identical combination of traits from parents D. occurs in somatic cells |
Occurs in the life cycle of sexually reproducing organisms |
|
|
Meiosis ends with: A.2 haploid daughter cells B. 4 haploid daughter cells C. 2 diploid daughter cells D. 4 diploid daughter cells |
4 haploid daughter cells |
|
|
Gametes are:
B. somatic cells C. body cells D. mitotic cells |
Sperm and egg |
|
|
Genetic recombination occurs in two ways known as: A. crossing over and synapsis B. crossing over and chromatin C. crossing over and independent assortment D. crossing over and segregation |
Crossing over and indepent assortment |
|
|
Meiosis in the male is called: A. oogenesis B. oocyte C.spermatogenesis D. ferilization |
Spermatogenesis |
|
|
Alternate forms of genes are called: A.phenotypes B.alleles C. chromosomes D. Genotype |
Alleles |
|
|
An individual's actual appearance known as its: A.phenotypes B.alleles C. chromosomes D. Genotype |
Phenotype |
|
|
The alleles the chromosome carry that are responsible for a given trait is known as its: A.phenotypes B.alleles C. chromosomes D. Genotype |
genotype |
|
|
There is one _____ for each trait, such as hairline, in each person. A. phenotype B. Allele C. protein D. carrier |
Allele |
|
|
If two members of the allelic pair are the same (XX or xx), the organism is siad to be: A. homozygous B.heterozygous C. dihybrid D. single trait |
Homozygous |
|
|
If two members of the allelic pair are different (Xx), the organism is said to be: A. homozygous B.heterozygous C. dihybrid D. single trait |
Heterozygous |
|
|
A test-cross crosses an organism with a dominant phenotype with one showing a ______ phenotype. A. heterozygous B. dominant C. heterozygous dominant D. recessive |
recessive |
|
|
Both a man and a woman are heterozygous for freckles. Freckles (F) are dominant over no freckles (f). What is the chance that their child will have freckles? A. 50% B. 25% C. 75% D. 100% |
75% ____F_______f__ F| FF | Ff _________________ f | Ff |ff |
|
|
Two- trait crosses are ________ crosses. A. monohybrid B. dihybrid C.recessive D. dominant |
Dihybrid |
|
|
A chart of family's history with regard to a particular genetic trait is known as a: A. genetic tree B.gene flow C. pedigree D. test cross |
pedigree |
|
|
Which of the following is not an autosomal recessive disorder? A.tay-sachs disease B. cystic fibrosis C. sickle cell disease D. marfan syndrome |
Marfan syndrome |
|
|
Which autosomal recessive disorder affects the red blood cells by causing them to be irregular in shape creating abnormal hemoglobin?
B. cystic fibrosis C. sickle cell disease D. marfan syndrome |
Sickle cell disease |
|
|
Blood type AB is example of: A. codominance B. incomplete dominance C. multiple allele inheritance D. transformation dominance |
Codominance |
|
|
Normal males and females have only one pair of: A. autosomes B. sex chromosomes D. genes |
Sex chromosomes |
|
|
What type of traits are controlled by genes on the sex chromosomes? A. autosomal B. alleles C. sex-linked D. gamete-linked |
Sex-linked |
|
|
Most X linked traits are: A.dominant B. recessive C. non-functioning D. unimportant |
Recessive |
|
|
Which of the following is not an X-linked recessive disorder? A. Hemophilia B. color blindness C. down syndrome D. fragile x syndrome |
Down syndrome |
|
|
What occurs during meiosis I, when both members of a homologous pair go into the same daughter cell? A. linkage B. nondisjunction C. fragile x syndrome D. sex-linked allele |
Nondisjunction |
|
|
The most common autosomal trisomy seen in humans is: A. down syndrome B. hemophilia C. fragile X syndrome D. color blindness |
Down syndrome |
|
|
All of the following can be used to diagnose a fetus for a genetic disorder except: A. karyotyping B. amniocentesis C. chorionic villus sampling D. all of these may be used |
karyotyping, amniocentesis, chorionic villus sampling |
|
|
When a single break causes a chromosome to lose an end piece or when two simultaneous breaks lead to the loss of an internal chromosome segment, a ________ occurs.
A. Deletion B. translocation C. inversion D. synapse |
Deletion |
|
|
In the Hershey-Chase experiment, radioactive phosphorus was found: A. outside the bacterial cells B. inside the bacterial cells C both a and b |
inside the bacterial cells |
|
|
According to Chargaff's fules, in DNA the amount of A. A=t and G=C B. A=G and T=C C. A=C and T=G D. A=T and C=G |
A=T and G=C |
|
|
During DNA replication, the parental strand ATTGGC would code for the daughter strand: A. ATTGGC B. CGGTTA C. TAACCG D. GCCAAT |
TAACCG |
|
|
Which of the following carries amino acids to the ribosomes? A. messenger RNA B. Ribosomal RNA C. Transfer RNA |
Transfer RNA |
|
|
Which of the following is a structural component of the organelle responsible for protein synthesis? A. messenger RNA B. Ribosomal RNA C. Transfer RNA |
Ribosomal RNA |
|
|
In contrast to DNA, RNA: A. is a helix B. contains uracil C. is double stranded D. contains deoxyribose sugar |
Contains uracil |
|
|
Mutation rates are typically low due to: A. proofreading by DNA polymerase B. DNA repair enzymes C. silent mutations D. all of these are correct |
Proofreading by DNA polymerase, DNA repair enzymes, silent mutations |
|
|
The process of converting the information containted in the nucleotide sequences of RNA into a sequence of amino acids is called: A. transcription B. translation C. translocation D. replication |
Translation |
|
|
How is transcription directly controlled in eukaryotic cells? A. through the use of phosphorylation B. by means of apoptosis C. using transcription factors and activators D. when chromatin is packed to keep genes turned on |
Using transcription factors and activators |
|
|
Which of these is a characteristic of cancer cells? A. they do not exhibit contact inhibitors B. they lack specialization C. they have abnormal chromosomes D. they fail to undergo apoptosis |
The do not exhibit contact inhibitors, they lack specialization, they have abnormal chromosomes, they fail to undergo apoptosis |
|
|
Which of these is not a possible cause of cancer? A. radiation B. metastasis C. viruses D. genes |
Metastasis |
|
|
Which of these is not a possible behavior that could help prevent cancer? A. maintain a healthy weight B. eating more dark-green, leafy vegetables, carrots, and various fruits C. not smoking D. consuming large amounts of smoked pickled foods E. consuming alcohol in moderation |
Consuming large amounts of smoked pickled foods |
|
|
If the original DNA sequence is ACGCGT, which of the following represents a point mutation? A. ACGGGT B. TGCCGT C. GGGCCC D. ACGCGT |
ACGGGT |
