• Biology question?

    Which of the following structures would you expect to have blood low in oxygen? A. pulmonary artery B. left atrium C. aorta D. vena cava E. 2 of these are low in oxygen
    Which of the following structures would you expect to have blood low in oxygen? A. pulmonary artery B. left atrium C. aorta D. vena cava E. 2 of these are low in oxygen
    3 answers · Biology · 2 weeks ago
  • Biology question?

    Which is true of the human respiratory system A. gas exchange occurs all along the respiratory system B. the nasal passages clean the air traveling to the lungs C. White blood cells carry most of the oxygen that is carried in the blood D. the mouth is the opening to the respiratory system E. none of these are true of the respiratory system
    Which is true of the human respiratory system A. gas exchange occurs all along the respiratory system B. the nasal passages clean the air traveling to the lungs C. White blood cells carry most of the oxygen that is carried in the blood D. the mouth is the opening to the respiratory system E. none of these are true of the respiratory system
    2 answers · Respiratory Diseases · 3 weeks ago
  • Biology question?

    The medulla oblongata regulates breathing by: A. monitoring the CO2 concentration of the blood B. smoothing out the breaths C. monitoring the O2 concentration D. 2 of these E. all of these
    The medulla oblongata regulates breathing by: A. monitoring the CO2 concentration of the blood B. smoothing out the breaths C. monitoring the O2 concentration D. 2 of these E. all of these
    1 answer · Biology · 3 weeks ago
  • Biology question?

    During inhalation which of the following occurs A. a positive pressure is created in the thoracic cavity B. diaphragm contracts and arches upward C. abdominal muscles contract D. none of these are correct
    During inhalation which of the following occurs A. a positive pressure is created in the thoracic cavity B. diaphragm contracts and arches upward C. abdominal muscles contract D. none of these are correct
    2 answers · Biology · 3 weeks ago
  • Biology question?

    In humans the bulk of chemical digestion takes place where A. the oral cavity B. stomach C. jejunum D. colon
    In humans the bulk of chemical digestion takes place where A. the oral cavity B. stomach C. jejunum D. colon
    1 answer · Biology · 4 weeks ago
  • Biology question?

    Movement of food from the stomach back into the esophagus is usually prevented by A. the pyloric sphincter B. reverse peristalsis C. the cardiac sphincter D. the pharynx E. none of these
    Movement of food from the stomach back into the esophagus is usually prevented by A. the pyloric sphincter B. reverse peristalsis C. the cardiac sphincter D. the pharynx E. none of these
    3 answers · Biology · 1 month ago
  • Statistics question?

    A coffee manufacturer is interested in whether the mean daily consumption of regular-coffee drinkers is less than that of decaffeinated-coffee drinkers. Assume the population standard deviation for those drinking regular coffee is 1.20 cups per day and 1.36 cups per day for those drinking decaffeinated coffee. A random sample of 50 regular-coffee... show more
    A coffee manufacturer is interested in whether the mean daily consumption of regular-coffee drinkers is less than that of decaffeinated-coffee drinkers. Assume the population standard deviation for those drinking regular coffee is 1.20 cups per day and 1.36 cups per day for those drinking decaffeinated coffee. A random sample of 50 regular-coffee drinkers showed a mean of 4.35 cups per day. A sample of 40 decaffeinated-coffee drinkers showed a mean of 5.84 cups per day. Use the .01 significance level. How do you get -2.33 for the decision rule
    1 answer · Mathematics · 1 month ago
  • Biology question?

    During the light dependant reaction P700 loses 2 electrons where do they go? A. They are picked up by NADP+ and stored in NADPH B. They are donated to P680 C. They are stored in water D. They are stored in CO2 which is used in the light independent reaction E. 2 of these are correct
    During the light dependant reaction P700 loses 2 electrons where do they go? A. They are picked up by NADP+ and stored in NADPH B. They are donated to P680 C. They are stored in water D. They are stored in CO2 which is used in the light independent reaction E. 2 of these are correct
    1 answer · Biology · 2 months ago
  • Biology question?

    What part of the leaf is composed of wax and is used to reduce water loss? A. epidermis B. stomata C. spongy mesophyll D. pallisade mesophyll E. none of these are correct
    What part of the leaf is composed of wax and is used to reduce water loss? A. epidermis B. stomata C. spongy mesophyll D. pallisade mesophyll E. none of these are correct
    2 answers · Biology · 2 months ago
  • Biology question?

    The oxygen that we breathe comes from where? A. A reaction that takes place in the stroma B. light independent reaction (dark reaction) C. water D. carbon dioxide E. 2 of these are correct
    The oxygen that we breathe comes from where? A. A reaction that takes place in the stroma B. light independent reaction (dark reaction) C. water D. carbon dioxide E. 2 of these are correct
    1 answer · Biology · 2 months ago
  • Statistics question?

    A sample of 31 observations is selected from a normal population. The sample mean is 69, and the population standard deviation is 8. Conduct the following test of hypothesis using the 0.01 significance level. H0: μ = 72 H1: μ ≠ 72 How do you get 0.037 for the p value
    A sample of 31 observations is selected from a normal population. The sample mean is 69, and the population standard deviation is 8. Conduct the following test of hypothesis using the 0.01 significance level. H0: μ = 72 H1: μ ≠ 72 How do you get 0.037 for the p value
    1 answer · Mathematics · 2 months ago
  • Statistics?

    A sample of 37 observations is selected from a normal population. The sample mean is 29, and the population standard deviation is 5. Conduct the following test of hypothesis using the 0.05 significance level. H0 : μ ≤ 26 H1 : μ > 26 For the decesion rule how do you get 1.645
    A sample of 37 observations is selected from a normal population. The sample mean is 29, and the population standard deviation is 5. Conduct the following test of hypothesis using the 0.05 significance level. H0 : μ ≤ 26 H1 : μ > 26 For the decesion rule how do you get 1.645
    1 answer · Mathematics · 2 months ago
  • Biology question?

    What part of the leaf is composed of wax and is used to reduce water loss? A. epidermis B. stomata C. spongy mesophyll D. pallisade mesophyll E. none of these are correct
    What part of the leaf is composed of wax and is used to reduce water loss? A. epidermis B. stomata C. spongy mesophyll D. pallisade mesophyll E. none of these are correct
    1 answer · Biology · 2 months ago
  • Biology question?

    Which area of the chloroplast would you expect to find chlorophyll? A. stroma B. thylakoid disc C. grana D. central vavuole E. 2 of these are correct
    Which area of the chloroplast would you expect to find chlorophyll? A. stroma B. thylakoid disc C. grana D. central vavuole E. 2 of these are correct
    1 answer · Biology · 2 months ago
  • Biology question?

    What proportion of their possible offspring will be homozygous A. 1 of 4 B. 2 of 4 C. 3 of 4 D. all of them E. none of them
    What proportion of their possible offspring will be homozygous A. 1 of 4 B. 2 of 4 C. 3 of 4 D. all of them E. none of them
    1 answer · Biology · 2 months ago
  • Biology question?

    R = right handed r = left handed A right handed male (hetero) plans to have children with a right handed (hetero) female. What are the possibilities for their offspring? What proportion of their possible children will be right handed. A. 1 of 4 B. 2 of 4 C. 3 of 4 D. all of them E. none of them
    R = right handed r = left handed A right handed male (hetero) plans to have children with a right handed (hetero) female. What are the possibilities for their offspring? What proportion of their possible children will be right handed. A. 1 of 4 B. 2 of 4 C. 3 of 4 D. all of them E. none of them
    3 answers · Biology · 2 months ago
  • Biology question?

    If during translation a mRNA molecule is 12 nucleotides long how many amino acids would it likely code for? A. 4 B. 1 C. 6
    If during translation a mRNA molecule is 12 nucleotides long how many amino acids would it likely code for? A. 4 B. 1 C. 6
    1 answer · Biology · 3 months ago