23. Refer to your text as this is the author's opinion
Sorry about the lack of formatting
I think the answer 13, but I don't sure about the others one.
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My apologies. I was answering from my ipad, and had some difficulties with responding; as you can see my answers all came out in a string. #13 as I gave it to you was definitely incorrect. This time I have bolded the answers. If you are still dissatisfied, I will opt out and try to get another expert to help you with this. Again I apologize for any inconvenience I may have caused.
Which statement correctly describes the ability of bases? (Points : 4) release only hydrogen ionstake up only hydrogen ionsrelease only hydroxide ionsboth take up and hydrogen ions and release hydroxide ionsrelease hydrogen and release hydroxide2. How do isotopes of an element differ? (Points : 4) proton numberelectron numberneutron numbertypes of bondsatomic number3. Which of the following explains the events occurring when water boils? (Points : 4) Hydrogen bonds are broken between neighbor water molecules.Covalent bonds are broken between oxygen and hydrogen atoms.Ionic bonds are broken when the minerals in water are heated.The bond between one water molecule and another is strengthened.The hydrogen atoms break away from the oxygen and escape as vapor.4. The pH scale is a mathematical indicator of what? (Points : 4) the concentration of H+ present in a solutionthe concentration of OH+ present in a solutionthe total amount of all ions in a solutionthe ability of a solution to bufferthe ability to dissolve in water5. How is the atomic number of an element determined? (Points : 4) Number of protons.Total of protons and neutrons.Number of electrons.Number of electron levels.Number of neutrons.6. Which of the following is the smallest unit of matter that has all the properties of an element? (Points : 4) moleculeelementatomcompoundelectron7. Which of the following is NOT a property of water? (Points : 4) It is a good solvent.It is denser when frozen than when liquid.It is cohesive.It resists temperature changes.It can be found as a solid, liquid, or gas.8. What is important about an atom's outermost electron shell? (Points : 4) is filled when it has three electronsdetermines its chemical reactivitydetermines its atomic massis filled with positively charged particles.is filled identically for every element.9. What category of biological molecules are steroids included in? (Points : 4) proteinslipdscarbohydratesnucleic acids10. What element do all organic molecules have in common? (Points : 4) HydrogenCarbonNitrogenOxygenPhosphorous11. Glycogen is a _____ made of many ______. (Points : 4) simple sugar; amino acidspeptide; amino acidspolymer; glucose moleculesprotein; fatty acidsnucleic acid; nucleotides12. A gene in DNA is the code for what? (Points : 4) a sequence of amino acidsa sequence of glucose moleculesa sequence of fatty acids used in a fata sequence of sugarsa sequence of functional groups13. If a material mixes readily with water it is classified as which of the following? (Points : 4) dehydratedhydrophobicsaturatedhydrophilicsalty14. What is the principle role for sugars in living things? (Points : 4) - sugars are energy storage molecules - monosaccharaides are "ready energy"to form cell membranesto serve as a form of energy storageto create out genetic codefor creating energyto produce hormones15. What makes a lipid unsaturated? (Points : 4) At least on double or triple bond.All single bonds.Hydrogens are added.Short fatty acid chains.16. Which of the following is a primary function of proteins? (Points : 4) energy storageenzymatic activitygenetic codingenergy sourceinsulation17. Which of the following is in correct order from smallest to largest? (Points : 4) protein- amino acid- polypeptideamino acid-polypeptide- peptidepeptide-polypeptide-proteinprotein-glycerol-amino aciddisaccaride-polysaccharide-monosaccharide18. Which of these things would make you question the validity of a scientific study? (Points : 4) Study originated from a simple observation.Hypothesis has never been tested before.Experiment canot be repeated.Results published in a journal read only by scientists.Original hypothesis was rejected.19. Which of the following correctly lists the classification categories from least to most inclusive? (Points : 4) kingdom, phylum, domain, class, order, family, genus, speciesdomain, kingdom, class, order, family, phylum, genus, speciesgenus, species, family, class, order, domain, phylum, kingdomspecies, genus, family, order, class, phylum, kingdom, domainphylum, species, genus, kingdom, domain, order, class, family20. To which group to prokaryotes belong? (Points : 4) Domain EukaryaKingdom PlantaeKingdom ProtistaDomain ArchaeaKingdom Animalia21. Scientists were studying temperature selection among pregnant big brown bats, to see if being pregnant has an effect on the preferred temperature the bats select. What would the control group be in this experiment? (Points : 4) Pregnant batsFemale bats that were not pregnant.Pregnant bats kept in higher temperatures.Male batsFemale bats kept at lower temperatures.22. Which process transforms solar energy into chemical energy? (Points : 4) metabolismhomeostasisrespirationphotosynthesisreproduction23. According to the Mader text, what is the single most significant bioethical issue that we face today? (Points : 4) Genetically modified organisms.Loss of biodiversity - (my best guess without having the book)Pollution to air and water.Carcinogens.24. What is the smallest unit of life? (Points : 4) tissue.organ.cell.specie.organsim.25. Which statement is true about a theory? (Points : 4) is tested by an experimentis more narrow in scope than a hypothesisencompasses many hypotheses.cannot be testedis held to be an absolutely correct answer to a question.
Which of the following statements is correct regarding the events of the cell cycle?
DNA is duplicated during the G1 and G2 phases
DNA replicates during cytokinesis.
Interphase consists of G1, S, and G2.
The M phase is usually the longest phase.
The cell stops growing in G2 phase.
When a eukaryotic cell is not undergoing cell division what form is it's DNA in?
Chromatin wound around histones.
Sister chromatids attached by a centromere.
Compacted into chromosomes.
Formed into tetrads.
Susan was examining a cell under the microscope and noticed the formation of a cell plate in the midline of the cell and the formation of nuclei at opposite poles of the cell. What kind of cell is she viewing?
animal cell in the G1 phase of the cell cycle
dividing bacterial cell
plant cell undergoing cytokinesis
animal cell undergoing cytokinesis
plant cell in the prophase stage
Cancer is a disorder in which some cells have lost what ability?
To produce spindle fibers
To control growth rate
To communicate with other cells.
To regulate cell volume
How do the daughter cells at the end of mitosis and cytokinesis compare to their parent cell when it was in G1 of the cell cycle?
The daughter cells have the same number of chromosomes and twice the amount of DNA.
The daughter cells have the same number of chromosomes and the same amount of DNA.
The daughter cells have the same number of chromosomes and half the amount of DNA.
The daughter cells have half the number of chromosomes and half the amount of DNA.
The daughter cells have half of the amount of cytoplasm and half the amount of DNA.
When the telomeres of chromosomes of a normal adult cell become too short, what happens to the cell?
DNA is repaired by telomerase
Cell undergoes metastasis and moves away.
Cell begins to reproduce rapidly.
Programmed cell death by apoptosis.
Cell loses ability to function.
Which of the following statements about mitosis is NOT true?
The cells arising from the process have half of the original genetic material.
The cells arising from the process are genetically identical.
the process of cytokinesis occurs simultaneously with the end of mitosis.
Spindle fibers are involved in the movement of chromosomes.
Both sexually and asexually reproducing organisms utilize the process of mitosis.
What do we call the proteins that are involved in the regulation of the cell cycle, and that show fluctuation in concentration during the cell cycle?
Which of the following statements about mitosis and meiosis is correct?
Meiosis involves 2 divisions and produces 4 non-identical daughter nuclei.
Meiosis involves 1 division and produces 2 non-identical daughter nuclei.
Mitosis involves 1 division and produces 2 non-identical daughter nuclei.
Mitosis involves 2 divisions and produces 4 identical daughter nuclei.
Meiosis involves 2 divisions and produces 4 identical daughter nuclei.
What is a tetrad?
two chromosomes with two sister chromatids each.
two sister chromatids with separate centromeres.
four chromosomes with two sister chromatids each.
four sister chromatids with a common centromere.
four sister chromatids attached at a common centromere.
How does the process of meiosis I differ from meiosis II?
crossing over occurs in prophase of meiosis I but not in prophase of meiosis II.
sister chromatids are separated during meiosis I while homologous chromosomes are separated during meiosis II
the resulting cells at the end of meiosis I are diploid while the cells at the end of meiosis II are haploid.
in telophase of meiosis I four daughter cells form from the parent cell and in telophase of meiosis II each parent cells gives rise to two daughter cells.
in meiosis I there is no pairing of chromosomes while homologues pair in meiosis II.
What will result if a human egg with 22 chromosomes is fertilized by a normal sperm?
a zygote with trisomy.
a zygote with disomy.
a zygote with monosomy.
a zygote with normal chromosome number.
cell death or loss of control of cell cycle.
What is the normal complement of sex chromosomes for a human male?
In what way is mitosis different from meiosis?
Mitosis involves division of the nucleus while meiosis is division of the cytoplasm.
Cytokinesis occurs with mitosis but not with meiosis.
Mitosis results in cells with identical DNA while meiosis yields cells with varied DNA combinations.
Mitosis occurs in all cells while meiosis occurs only in somatic cells.
They are the same except mitosis has one division while meiosis has 2.
What is the result when a set of homologs does not separate in meiosis I?
Cells with multiple nuclei.
Following meiosis I, the daughter cells are ______; following meiosis II, the daughter cells are ______; and following mitosis, the daughter cells are _______.
diploid; haploid; diploid
diploid; diploid; haploid
haploid; haploid; diploid
haploid; haploid; haploid
diploid; diploid; diploid
How many pairs of chromosomes are found in a normal human cell?
Which of the following is NOT true with regard to the law of segregation?
Each individual has 2 factors for each trait.
Genes segregate during gamete formation.
Gametes contain only 1 gene from each pair.
During fertilization, each new individual obtains 2 genes for each trait.
Each gamete contains 2 genes for each trait.
Parents with the dominant phenotype cannot have offspring with the recessive phenotype.
True because the dominant gene must be passed down from each parent.
True because at least one dominant gene will be passed down from each parent.
False because one parent could carry the recessive allele.
False because both parents could carry the recessive allele.
True because both parents have the dominant allele.
What is the phenotype of a black rabbit whose complement of alleles for the trait is Bb?
impossible to determine
Skin color is coded for by several different genes which results in a range of skin colors from very dark to very light. This is an example of what type of inheritance?
the rule of multiplication
Morgan breeds and sells snakes. He knows that he can make the most money by breeding and selling albino snakes. Albinism is a recessive trait. His female albino corn snake just produced 6 offspring. Two displayed normal coloration and 4 were albino. What do you know about the genotype of the baby snakes with the normal coloration?
They must be homozygous dominant.
They must be homozygous recessive.
They must be heterozygous.
They could be either heterozygous or homozygous dominant.
There is not enough information to determine their genotype
What term is used to refer to an individual who is carrying two identical alleles of the same gene?
What are linked alleles?
Genes on homologous chromosomes.
Traits with similar effects.
Genes that are very close together in location on a chromosome.
Alleles inherited on the sex chromosomes.
Genes that tend to code for the same traits.
A woman carries a sex-linked gene for a disorder. Her husband is normal. What can you determine about their children?
All sons will have the disorder.
All daughters will be carriers.
None of the children will inherit the disorder.
50% chance of any child having the disorder.
None of the daughters will have the disorder
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What term is used to refer to a testable explanation of a broad range of related phenomena that is relied upon by scientists with a high degree of confidence? (Points : 5) an acta lawa theorya dogma
2. What are the smaller unit molecules (monomers) which combine to form proteins and polypeptides called? (Points : 5) fatty acidsmonosaccharidesamino acidsnucleotides
3. Enzymes, some hormones, and structural molecules like keratin and collagen are examples of what kind of molecule? (Points : 5) nucleic acidscarbohydrateslipidsproteins
4. What term is used to refer to an atom that has gained or lost electrons ? (Points : 5) an iona moleculean isotopean element
5. What is the best way to describe the structure of cell membranes? (Points : 5) a complex carbohydrate webbinga flexible sheet of proteina network of microfilaments and microtubulesa double layer of phospholipids
6. Which of the following transport mechanisms requires ATP to move materials across a plasma membrane? (Points : 5) simple diffusionfacilitated diffusionosmosisactive transport
7. A cell is placed in a solution. If the cell is observed to shrink, the solution must be _________________ relative to the interior of the cell. (Points : 5) hypertonichypotonicisotonictoxic
8. Consider the following two statements:
(1) " Energy can neither be created nor destroyed, but it can be changed in form."
(2) "If energy changes form, the change is never 100% efficient."What generalization can be made about these two statements?
(Points : 5) These statements are expressions of the 1st and 2nd energy laws.These statements don't apply to any cells.These statements are both false.These statements apply only to eukaryotic (higher) cells.
9. What term is applied to the part of an enzyme that "fits" its substrate? (Points : 5) repressorpromoteractive siteoperator
10. In higher cells, where is cellular (aerobic) respiration with production of adenosine triphosphate (ATP) is carried out? (Points : 5) mitochondrionnucleusplasma membraneendoplasmic reticulum
11. In what way does meiosis differ from mitosis ? (Points : 5) meiosis results in diploid daughter cellsmeiosis involves two cell divisionsDNA replicates before the start of meiosismeiosis occurs all over the human body
12. What causes leaves to appear green? (Points : 5) carotenoids absorb green lightcarotenoids reflect green lightchlorophylls a and b absorb green lightchlorophylls a and b reflect green light
13. Many human traits such as eye color and height are controlled by what type of inheritance? (Points : 5) sex-linked inheritanceMendel's lawspolygenic inheritanceincomplete dominance
14. Which nucleic acid base is found in ribonucleic acid (RNA) but not in deoxyribonucleic acid (DNA)? (Points : 5) Thymine (T)Guanine (G)Cytosine (C)Uracil (U)
15. Which of the following is not a possible outcome of recombinant deoxyribonucleic acid (rDNA) technology? (Points : 5) mass production of human hormones by bacteriaestimating the age of a rock sampleincreasing the production of hardier cropscorrecting a human disease
16. What is the polymerase chain reaction (PCR) method used for? (Points : 5) mass-producing proteinsspeeding up the production of mRNA proteinsmaking multiple identical copies of small amounts of DNAdecoding the nucleotide sequence of a gene
17. Which of the following is most likely to cause a cell to become cancerous? (Points : 5) mutation of a tumor supressor genepremature apoptosiscytokinesiscontact inhibition
18. What is the normal complement of sex chromosomes for a human male ? (Points : 5) YYXYXXXXY
19. What is an allele? (Points : 5) an alternate form of a genea gene found on different chromosomes (e.g., on chromosome numbers 1 and 5)a gene located at two different positions on the same chromosomea sex cell
20. What do we call a visual display of metaphase chromosomes arranged by size, shape, and banding pattern? (Points : 5) a genetic disordera centrosomea karyotypeamniocentesis
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