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science final 2018
Terms in this set (23)
which medicines are used to treat bacterial infections, but not viruses?
which of these processes does not involve the replication of chromosomes?
~formation of sex cells
how do the chromosomes in a sex cell differ from those in a body cell?
~a sex cell has half the number of chromosomes as a body cell
~a sex cell has twice the number of chromosomes as a body cell
~a sex cell has chromosomes that are half as long as those in a body cell
~a sex cell has chromosomes that are twice as long as those in a body cell
a sex cell has half the number of chromosomes as a body cell
DNA contains genes that provide instructions for inherited traits. What is the relationship between the genes and chromosomes?
~genes are made up of thousands of chromosomes
~genes are segments of DNA that are located on the chromosomes of each cell
~genes correspond to the phenotype, while chromosomes correspond to the genotype
~chromosomes correspond to the phenotype, while genes correspond to the genotype
genes are segments of DNA that are located on the chromosomes of each cell
Dante wants to match the types of cells with how they are produced. Which choice correctly pairs a type of cell with how it is produced?
~egg cell - meiosis in males
~sperm cell - mitosis in males
~body cell - meiosis in females
~body cell - mitosis in females
body cell - mitosis in females
what aids in the movement of bacteria?
what part of our bodies help to fight off viruses?
~red blood cells
~white blood cells
white blood cells
what do fossils provide evidence for?
~the history of life in the geologic past
~developmental patterns of living organisms
~why species became extinct in the past
~the genetic similarities between living and extinct organisms
the history of life in the geologic past
Raylene inherited certain physical characteristics from her parents. Which of these below is not an inherited characteristic?
~wavy, red hair
~purple painted fingernails
purple painted nails
which is these lists presents the stages of the cell cycle in the correct order?
~interphase, mitosis, cytokinesis
~mitosis, interphase cytokinesis
~cytokinesis, mitosis, interphase
~interphase, cytokinesis, mitosis
interphase, mitosis, cytokinesis
what do viruses need to survive?
~ a mate
~ a host
which of these lists correctly identifies all four bases in DNA?
~ adenine, thymine, guanine, cytosine
~ adenine, thymine, uracil, cytosine
~ adenine, uracil, guanine, cytosine
~ uracil, thymine, guanine, cytosine
adenine, thymine, guanine, cytosine
a scientist described two modern-day species as sharing a common ancestor. what does it mean when two species share a common ancestor?
~ it means that the two species are actually the same species.
~ it means that both species evolved from one species that lived in the past
~ it means that one of the species evolved from other species
~ it means that the two species share all the same traits
it means that both species evolved from one species that lived in the past
how would living things differ if cell division took place only for reproduction.
~ all living things would be single-celled organisms
~ living things would be more genetically diverse
~ multicellular organisms would be much smaller
~ multicellular organisms would be unable to repair damaged cells
all living things would be single-celled organisms
what are the two Kingdoms of Bacteria?
~Archaebacteria and Viruses
~Archaebacteria and Eubacteria
~Eubacteria and Viruses
~Bacteria and Viruses
Archaebacteria and Eubacteria
how is meiosis related to sexual reproduction?
~meiosis allows the offspring produced during sexual reproduction to grow and develop
~meiosis produces the sex cells
~meiosis joins together during sexual reproduction to produce new offspring
~meiosis produces the body cells that join to form new offspring during sexual reproduction
meiosis produces the sex cells that join to form new offspring during sexual reproduction
what is the result of one sex cell undergoing meiosis in humans?
~ two sex cells, each 23 chromosomes
~ four sex cells, each with 23 chromosomes
~ two sex cells, each with 46 chromosomes
~ four sex cells, each with 46 chromosomes
four sex cells, each with 23 chromosomes
the body cells of adult fruit flies each contain four PAIRS of chromosomes. how many chromosomes are there in the sex cells of each fly that result from meiosis?
how is RNA different from DNA?
~ RNA contains the nucleotide base thymine
~ RNA is a molecule that is present in all living cells
~ RNA contains a different sugar in its backbone
~ RNA is composed of a sugar, a phosphate, and a base
RNA contains a different sugar in its backbone
many plants reproduce sexually through the joining of sex cells in a flower. The female sex cell is an egg. The male sex cell is part of the pollen. By what process is the sex cell in pollen produced?
which of the following is not a shape of bacteria?
kara has a plant that produces either purple or white flowers. she crosses a plant that has two recessive alleles for white flowers with a plant that has two dominant alleles for purple flowers. which result would be true of all of the offspring?
~ all of the offspring would have two recessive alleles and white flowers
~ all of the offspring would have one recessive allele, one dominant allele, and white flowers
~ all of the offspring would have two dominant alleles and purple flowers
~ all of the offspring would have one recessive allele, and purple flowers
all of the offspring would have one recessive allele, one dominant allele, and purple flowers
which of these terms best describes the structure of DNA?
~ single strand
~ double helix
~ triple octagon
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