• Need Help WIth Questions!!!?

    Best answer: 1) C Suppose that neutral pH is optimum for most plants... pH affects how proteins work (enzymes are proteins, and they are involved in photosynthesis). Too high/low of a pH will denature proteins. 2) B Compare the substances' pH levels... vinegar has a pH around 2-3, bleach 12-13, baking soda 8... the one farthest from... show more
    Best answer: 1) C Suppose that neutral pH is optimum for most plants... pH affects how proteins work (enzymes are proteins, and they are involved in photosynthesis). Too high/low of a pH will denature proteins. 2) B Compare the substances' pH levels... vinegar has a pH around 2-3, bleach 12-13, baking soda 8... the one farthest from neutral pH will have the greatest effect. In this case, it's bleach. 3) Not sure, I'd guess C since chloroplasts are green... 4) A Basic solutions will lower pH. See #1
    1 answer · Biology · 7 years ago
  • How are nutrients such as Ca and K cycled through an ecosystem?

    Best answer: Your textbook's essentially correct, here are some graphics of the calcium & potassium cycle that might help. Calcium: http://dardel.info/images/hydrologic_cyc... Potassium: http://www.ipni.net/ppiweb/ppibase.nsf/b...
    Best answer: Your textbook's essentially correct, here are some graphics of the calcium & potassium cycle that might help. Calcium: http://dardel.info/images/hydrologic_cyc... Potassium: http://www.ipni.net/ppiweb/ppibase.nsf/b...
    1 answer · Biology · 7 years ago
  • In the Krebs cycle, production of ATP requires?

    Best answer: D. All of the above. Acetyl-CoA is one of the entering molecules for the Krebs cycle. Without it, the cycle cannot run. The six-carbon compound is another of the molecules. The compound will eventually break off into two 3 carbon compounds for sugars and regeneration. Of course, the creation of ATP (adenosine triphosphate, with... show more
    Best answer: D. All of the above. Acetyl-CoA is one of the entering molecules for the Krebs cycle. Without it, the cycle cannot run. The six-carbon compound is another of the molecules. The compound will eventually break off into two 3 carbon compounds for sugars and regeneration. Of course, the creation of ATP (adenosine triphosphate, with 3 phosphates) requires an addition of one phosphate to ADP (adenosine diphosphate, with only 2 phosphates).
    1 answer · Biology · 8 years ago
  • Name of the nervous system concerned with stimulatory actions?

    Best answer: Peripheral Nervous System. The other nervous system (central nervous system) deals with the spinal cord and brain.
    Best answer: Peripheral Nervous System. The other nervous system (central nervous system) deals with the spinal cord and brain.
    1 answer · Biology · 7 years ago
  • What is the optimum range of Enzymes?

    Best answer: Optimum range refers to the range of temperatures and pH levels that an enzyme works best in. Enzymes denature (stop working properly) if the temperature is too high or too low, or if the pH is too acidic or basic. Different enzymes have different ranges, so there are enzymes that only work in boiling temperatures and others that work... show more
    Best answer: Optimum range refers to the range of temperatures and pH levels that an enzyme works best in. Enzymes denature (stop working properly) if the temperature is too high or too low, or if the pH is too acidic or basic. Different enzymes have different ranges, so there are enzymes that only work in boiling temperatures and others that work in near freezing conditions.
    4 answers · Biology · 8 years ago
  • How many genes are on a typical human chromosome?

    Best answer: On the typical human chromosome, there may be hundreds to thousands of genes. They really just vary.
    Best answer: On the typical human chromosome, there may be hundreds to thousands of genes. They really just vary.
    1 answer · Biology · 9 years ago
  • Importance of chromosomes replicating during interphase?

    So that the final two daughter cells will have the correct number of chromosomes. For example, in a somatic (body) cell of a human, there are 46 chromosomes. If chromosomes weren't replicated, the daughter cells would only have 23 chromosomes each, and would not survive. However, if replication occurs in interphase, the dividing cell will... show more
    So that the final two daughter cells will have the correct number of chromosomes. For example, in a somatic (body) cell of a human, there are 46 chromosomes. If chromosomes weren't replicated, the daughter cells would only have 23 chromosomes each, and would not survive. However, if replication occurs in interphase, the dividing cell will temporarily have 92 chromosomes; after cytokinesis (physical division), the two daughter cells will have 46 chromosomes each, equal to the number of the original cell.
    3 answers · Biology · 9 years ago
  • The Calvin Cycle is a common method of which of the following?

    Best answer: C. Carbon Fixation. The Calvin Cycle is the process by which carbon molecules from CO2 are "fixed" into sugars for plants. It is related to photosynthesis. (A) and (B) relate to cell respiration, and the Calvin Cycle does not involve the electron transport chain.
    Best answer: C. Carbon Fixation. The Calvin Cycle is the process by which carbon molecules from CO2 are "fixed" into sugars for plants. It is related to photosynthesis. (A) and (B) relate to cell respiration, and the Calvin Cycle does not involve the electron transport chain.
    1 answer · Biology · 8 years ago
  • Does tRNA have ribose or deoxyribose?

    Best answer: tRNA has ribose. DNA is the nucleic acid with the sugar deoxyribose, while RNA (mRNA, rRNA, tRNA, etc.) is the nucleic acid with the sugar ribose.
    Best answer: tRNA has ribose. DNA is the nucleic acid with the sugar deoxyribose, while RNA (mRNA, rRNA, tRNA, etc.) is the nucleic acid with the sugar ribose.
    3 answers · Biology · 9 years ago
  • How many cones can a flame have?

    Best answer: The flame can have either one or two cones. In a single-cone flame (luminous flame), the temperature is lower. In a double-cone flame (non-luminous flame), the temperature is higher. Good luck!
    Best answer: The flame can have either one or two cones. In a single-cone flame (luminous flame), the temperature is lower. In a double-cone flame (non-luminous flame), the temperature is higher. Good luck!
    1 answer · Biology · 9 years ago
  • What does drift do to the genetic variation of a locus or a population?

    Best answer: Genetic drift often affects a population in a way that reduces genetic variation. Genetic drift is the process where chance events select individuals out of a population to either found a new population (the "founder" effect) or to survive a disaster (the "bottleneck" effect). Since genetic drift reduces the size of a population... show more
    Best answer: Genetic drift often affects a population in a way that reduces genetic variation. Genetic drift is the process where chance events select individuals out of a population to either found a new population (the "founder" effect) or to survive a disaster (the "bottleneck" effect). Since genetic drift reduces the size of a population (generally) by chance, this means no individual has an advantage over another. So, it is possible that alleles are removed from the gene pool at random. This causes genetic variation to decrease.
    1 answer · Biology · 9 years ago
  • One gene = one protein?

    Best answer: One gene does not yield one protein all the time. In some cases, one gene codes for part of a protein (because proteins can be made of multiple polypeptides, or subunits). So, the more correct term would be "one gene = one polypeptide".
    Best answer: One gene does not yield one protein all the time. In some cases, one gene codes for part of a protein (because proteins can be made of multiple polypeptides, or subunits). So, the more correct term would be "one gene = one polypeptide".
    3 answers · Biology · 8 years ago
  • Please help me with this ap bio ?

    Best answer: Dominant alleles do not subdue or suppress recessive alleles in any way because the two do not physically interact. Dominance and recessiveness refer to the mechanisms by which genotype is translated into phenotype. In the case of round vs. wrinkled seeds... Round seeds (homozygous dominant and heterozygous) make enough of a... show more
    Best answer: Dominant alleles do not subdue or suppress recessive alleles in any way because the two do not physically interact. Dominance and recessiveness refer to the mechanisms by which genotype is translated into phenotype. In the case of round vs. wrinkled seeds... Round seeds (homozygous dominant and heterozygous) make enough of a certain enzyme that allows them to convert accumulating sugars and water into starches. This gives the peas more volume, smoothness, and roundness. Wrinkled seeds (homozygous recessive), on the other hand, lack the ability to make that enzyme- so, no starch is formed, and the seeds wrinkle when they dry
    1 answer · Biology · 8 years ago
  • What does the crop do, for the digestive system of annelids?

    For annelids (such as earthworms), the crop stores food before digestion. The food will then enter the gizzard, which uses rocks and other particles to grind the food. Good luck!
    For annelids (such as earthworms), the crop stores food before digestion. The food will then enter the gizzard, which uses rocks and other particles to grind the food. Good luck!
    3 answers · Biology · 9 years ago
  • Part of the unusually large amount of free energy that results from the hydrolysis of ATP derives from?

    Best answer: Negative. Phosphate groups are negatively charged; and because like charges repel each other, severing the bonds between these negative charges will release a large amount of energy because these groups are already "pushing" away from each other to begin with.
    Best answer: Negative. Phosphate groups are negatively charged; and because like charges repel each other, severing the bonds between these negative charges will release a large amount of energy because these groups are already "pushing" away from each other to begin with.
    1 answer · Biology · 9 years ago
  • Chromatids are: choose best answer.?

    Best answer: C. (A) is incorrect because the spindle is attached to the centriole, not chromatids. (B) is also incorrect because a pair of chromosomes is called homologous chromosomes.
    Best answer: C. (A) is incorrect because the spindle is attached to the centriole, not chromatids. (B) is also incorrect because a pair of chromosomes is called homologous chromosomes.
    2 answers · Biology · 9 years ago
  • A chromosome has no DNA and the proteins attached to it.?

    Best answer: 1) False. Chromosomes are actually segments of DNA and protein found in cells. They are condensed coils of DNA wind around proteins called histones. There are actually 23 pairs of chromosomes in a human somatic cell, for our characteristic 46 chromosomes in total. 2) True. In electrophoresis, charged molecules migrate through a... show more
    Best answer: 1) False. Chromosomes are actually segments of DNA and protein found in cells. They are condensed coils of DNA wind around proteins called histones. There are actually 23 pairs of chromosomes in a human somatic cell, for our characteristic 46 chromosomes in total. 2) True. In electrophoresis, charged molecules migrate through a matrix towards ends of opposite charge: negative molecules, such as DNA, migrate toward the positive end, and vice versa. 3) True. The nuclei of all eukaryotic cells houses DNA and is the site of DNA replication. Good luck!
    4 answers · Biology · 9 years ago
  • What part of the brain "senses", or "regulates" body pH level?

    Best answer: The medulla oblongata (or just medulla). Chemoreceptors in the medulla sense the changes in arterial levels of many factors that include H+ content (aka pH level).
    Best answer: The medulla oblongata (or just medulla). Chemoreceptors in the medulla sense the changes in arterial levels of many factors that include H+ content (aka pH level).
    1 answer · Biology · 9 years ago
  • Identify the reactant in photosynthesis which the source of the oxygen that is released from the process?

    Best answer: The reactant is water (H2O). Water splitting enzymes cleave the hydrogen ions (H+) from the water molecules, and the leftover oxygen atoms bind together to form molecules of oxygen (O2).
    Best answer: The reactant is water (H2O). Water splitting enzymes cleave the hydrogen ions (H+) from the water molecules, and the leftover oxygen atoms bind together to form molecules of oxygen (O2).
    1 answer · Biology · 9 years ago
  • List the products of the light dependent photosynthesis reactions?

    Best answer: Light dependent reactions of photosynthesis produce: Oxygen (O2) ATP NADPH
    Best answer: Light dependent reactions of photosynthesis produce: Oxygen (O2) ATP NADPH
    2 answers · Biology · 9 years ago