Archive for August 2020

Which of the following is not characteristic of perfect competition?

Which of the following is not characteristic of perfect competition?



a. many buyers and sellers
b. ability to control price
c. standardized (identical) products
d. free entry and exit of firms

Answer: b. ability to control the price

Which of the following firms is most likely to be a perfectly competitive firm?


a. one of the three largest Us automakers
b. one of the cellphone service carriers
c. a public school operated by the government
d. a soybean farmer

Answer: d. a soybean farmer

What are aperiodic sounds?

What are aperiodic sounds?



Answer: They do not occur every T seconds; they are irregular. Speech sounds include sound when air is pushed through the vocal folds.

A nurse is caring for a client who has sickle cell anemia and is taking hydroxyurea. Which of the following findings should the nurse report to the provider

A nurse is caring for a client who has sickle cell anemia and is taking hydroxyurea. Which of the following findings should the nurse report to the provider 



Answer:

Hemoglobin 7.0 g/dL
Platelets 75000/mm3
Potassium 5.2 mEq/L


Hemoglobin 7.0 g/dL is correct. A hemoglobin level of 7.0 g/dL indicates hydroxyurea toxicity, and the nurse should report it to the provider.

Creatinine 1 mg/dL is incorrect. A creatinine level of 1 mg/dL is within the expected reference range.

RBC 4.7 million/mm3 is incorrect. A RBC 4.7 million/mm3 is within the expected reference range.

Platelets 75,000/mm3 is correct. A platelet level of 75,000/mm3 indicates hydroxyurea toxicity, and the nurse should report it to the provider.

Potassium 5.2 mEq/L is correct. A potassium level of 5.2 mEq/L indicates tumor lysis syndrome, and the nurse should report it to the provider.

You are given an unknown organism to identify. It is unicellular and heterotrophic. It is motile, using many short extensions of the cytoplasm, each featuring the 9 + 2 filament pattern. It has well-developed organelles and three nuclei, one large and two small. This organism is most likely to be a member of which group?

You are given an unknown organism to identify. It is unicellular and heterotrophic. It is motile, using many short extensions of the cytoplasm, each featuring the 9 + 2 filament pattern. It has well-developed organelles and three nuclei, one large and two small. This organism is most likely to be a member of which group?



Answer: ciliates

How do humans combat infection by the Plasmodium parasite?

How do humans combat infection by the Plasmodium parasite?



Answer: Cytotoxic T cells destroy infected liver cells by recognizing a Plasmodium protein bound to an HLA protein on the surface of those cells.

According to the school of ethical universalism,

According to the school of ethical universalism,


Answer: to the extent there is common moral agreement about right and wrong actions and behaviors across multiple cultures and countries, there exists a set of universal ethical standards to which all societies, all companies, and all individuals can be held accountable.

According to the school of ethical universalism,

According to the school of ethical universalism,



Answer: universal ethical principles or norms put limits on what actions and behaviors fall inside the boundaries of what is right and which ones fall outside—such universal norms include honesty, respecting the rights of others, practicing the Golden Rule, and not acting in a manner that harms others or pillages the environment.

If one concurs with the school of ethical universalism, then one believes that

If one concurs with the school of ethical universalism, then one believes that



Answer: many basic moral standards travel well across cultures and countries and really do not vary significantly according to local cultural beliefs, social mores, religious convictions, and/or the circumstances of the situation.

According to the ethical relativism school of thinking,

According to the ethical relativism school of thinking,



Answer: there can be no one-size-fits-all set of authentic ethical norms against which to gauge the conduct of company personnel.

An increase in income taxes​ _______, everything else remaining the same.

An increase in income taxes​ _______, everything else remaining the same.



A.
sometimes increases the multiplier and sometimes decreases the multiplier
B.
makes the multiplier smaller
C.
makes the multiplier larger
D.
has no effect on the multiplier


Answer: B.
makes the multiplier smaller

Which of these is a behavior providers should adopt to improve patient safety?

Which of these is a behavior providers should adopt to improve patient safety?



Follow written safety protocols, even if they slow you down

Safety protocols are in place for a reason, and you should follow them, even if they slow you down. Sometimes there will be a problem with a policy or procedure, in which case you should report it, rather than inventing a "workaround" (a method to circumvent a problem without fixing it). Likewise, you should speak up if you believe any colleague — supervisors included — is threatening patient safety. Part of patient-centered care is respecting patient autonomy, even if it means considering different treatment approaches than what you would normally consider "best practice."

Economic cost can best be defined as

Economic cost can best be defined as



  1. the opportunity cost of using a resource already owned by the firm.
  2. the income the firm must provide to resource suppliers to attract resources from alternative uses.
  3. any contractual obligation that results in a flow of money expenditures from an enterprise to resource suppliers.
  4. those payments for resources that involve an obvious cash transaction.



Answer: the income the firm must provide to resource suppliers to attract resources from alternative uses.

Issued in 1974, 45 CFR 46 raised to regulatory status:

Issued in 1974, 45 CFR 46 raised to regulatory status:



Answer: US Public Health Service Policy (45 CFR 46 raised to regulatory status the US Public Health Service policy of 1966 "Clinical research and investigation involving human beings".)

Blood returns to the heart via the _____.

Blood returns to the heart via the _____.



A aorta
B pulmonary arteries
C pulmonary veins
D aorta and pulmonary arteries
E aorta and pulmonary vein


Answer: C

On an isobaric surface,

On an isobaric surface,



Answer: the atmospheric pressure is everywhere equal

A station at an altitude of 900 m (about 3,000 feet) above sea level measures an air pressure of 930 mb. Under normal conditions, which of the values below do you think would be the most realistic sea level pressure for this station?

A station at an altitude of 900 m (about 3,000 feet) above sea level measures an air pressure of 930 mb. Under normal conditions, which of the values below do you think would be the most realistic sea level pressure for this station?



Answer: 1020 mb

An aneroid barometer works on the principle that

An aneroid barometer works on the principle that



Answer: a small closed cell with most of its air removed will expand and contract with changes in air pressure

A barograph will:

A barograph will:



Answer: mark a continuous record of pressure on chart paper

The difference in saturation vapor pressure between supercooled water and ice reaches a maximum at about -2°C. This means that the ice crystal process will be most effective in producing precipitation when cloud temperatures are:

The difference in saturation vapor pressure between supercooled water and ice reaches a maximum at about -2°C. This means that the ice crystal process will be most effective in producing precipitation when cloud temperatures are:



Answer: below -40 degrees C

A true blizzard is characterized by

A true blizzard is characterized by



Answer: low temp, strong winds, reduced visibility, blowing snow

Contact nucleation is:

Contact nucleation is:



Answer: involved in contact freezing. Can be just about any substance

Supercooled cloud droplets are:

Supercooled cloud droplets are:



Answer: liquid droplets observed at temperatures below 0 deg C

Ice nuclei may be:

Ice nuclei may be:



Answer: ice crystals, certain clay minerals, bacteria in decaying plan leaf material

Homogeneous nucleation occurs when:

Homogeneous nucleation occurs when:



Answer: randomly moving atoms form clusters above a critical threshold

ser / ocho y media / noche

ser / ocho y media / noche



Answer: Eran las ocho y media de la noche

What are PSYCHOLOGICAL DEFENSE MECHANISMS

What are PSYCHOLOGICAL DEFENSE MECHANISMS




  1. Psychological defense mechanisms help the ego cope with anxiety, frustration, and unacceptable impulses.
  2. Psychological defense mechanisms help relieve tension between inner psychological reality and the demands of the external world.
  3. Denial, reaction formation, and projection are considered primitive defenses because they are more out of touch with reality.
  4. Sublimation , undoing, rationalization, displacement, identification, and intellectualization represent higher levels of functioning.
  5. Each person has their unique set of psychological defenses that make up their personality.

Set hasDigit to true if the 3-character passCode contains a digit.

Set hasDigit to true if the 3-character passCode contains a digit.


#include <iostream>
#include <string>
#include <cctype>
using namespace std;
int main() {
bool hasDigit;
string passCode;
hasDigit = false;
passCode = "abc";
/ Your solution goes here /
if (hasDigit) {
cout << "Has a digit." << endl;
}
else {
cout << "Has no digit." << endl;
}
return 0;
}


Answer:


if (isdigit(passCode.at(0)) || isdigit(passCode.at(1)) || isdigit(passCode.at(2)))
{
hasDigit = true;
}

Angiosperms are most closely related to _____.

Angiosperms are most closely related to _____.



a. gymnosperms
b. bryophytes
c. green algae
d. seedless vascular plants
e. charophyceans


Answer: gymnosperms

Which of the following statements about aldosterone is NOT correct?

Which of the following statements about aldosterone is NOT correct?


A. Aldosterone increases the number of passive sodium channels in the luminal membrane of the distal tubule and collecting duct, thus aiding sodium reabsorption.
B. Aldosterone is produced in the adrenal cortex.
C. Aldosterone increases sodium reabsorption by increasing the number of Na+-K+ ATPase pumps in the luminal membrane of the proximal tubule.
D. Aldosterone is stimulated by decreased plasma sodium levels and increased plasma potassium levels.


Answer: C. Aldosterone increases sodium reabsorption by increasing the number of Na+-K+ ATPase pumps in the luminal membrane of the proximal tubule.

The more management levels through which a message passes, the _____.

The more management levels through which a message passes, the _____. 


A. more important the message is
B. higher the chance the message will become external
C. more informal the organization
D. more disorganized the organization
E.more distorted the message may become



Answer: The more management levels through which a message passes, the more it is prone to distortion.

Which of the following statements in a consent form is an example of exculpatory language?

A general requirement for informed consent is that no informed consent may include any exculpatory language. Exculpatory language is that which waives or appears to waive any of the subject's legal rights or releases or appears to release those conducting the research from liability for negligence.

Which of the following statements in a consent form is an example of exculpatory language?



Answer: Taking part in the research is voluntary, but if you choose to take part, you waive the right to legal redress for any research-related injuries

Which of the following events occurs during transcription?

Which of the following events occurs during transcription?



  • Those segments of the RNA strand that do not actually code for the protein are removed.
  • The message in mRNA is translated into a protein.
  • mRNA binds to a ribosome in the cytoplasm.
  • A molecule of RNA is formed based on the sequence of nucleotides in DNA.
  • A cap is added to the RNA molecule.




Answer:


  • A molecule of RNA is formed based on the sequence of nucleotides in DNA.
  • During transcription, RNA nucleotides line up with their complementary DNA partners, transcribing the information in DNA into RNA.

Which of the following is most likely to own the data resulting from a research project?

Which of the following is most likely to own the data resulting from a research project?



  • The organization that receives federal funding for a project.
  • A graduate student working under the direction of a faculty member.
  • A technician who collected the data.
  • A faculty member working on a federally-funded project.



Answer:


  • The organization that receives federal funding for a project.
  • The organization that receives a federally-funded grant can typically claim ownership of the data from the project.

Which of the following statements apply to the variation in human skin color?

Which of the following statements apply to the variation in human skin color?




Answer:


  • Human skin color variation is primarily determined by the type and amount of melanin pigment in the skin.
  • Human skin color variation evolved recently in hominid evolution, once some populations of our human ancestors migrated out of Africa.
  • Human skin color variation likely evolved in response to differences in the intensity of sunlight around the world

Which of the following describes a growth mindset, as opposed to a fixed mindset?

Which of the following describes a growth mindset, as opposed to a fixed mindset?



Answer:


  • Challenging yourself by persisting longer with problems helps to grow your mental muscle

  • Believing your talents, abilities, and intelligence can be developed in different ways

  • Learning and growing your brain helps performance in school

What is the difference between heterozygous and homozygous individuals?

What is the difference between heterozygous and homozygous individuals?




  1. Homozygotes have one chromosome while heterozygotes have two similar chromosomes.
  2. Heterozygotes carry two copies of a gene while homozygotes only carry one.
  3. The homozygote will express the dominant trait and the heterozygote will express the recessive trait.
  4. All of the gametes from a homozygote carry the same version of the gene while those of a heterozygote will differ.



Answer: All of the gametes from a homozygote carry the same version of the gene while those of a heterozygote will differ.

Which of the following is NOT a function of the lymphatic system?

Which of the following is NOT a function of the lymphatic system?



A.) absorbs fats from the digestive system
B.) maintains acid-base balance of tissue fluid
C.) takes up excess tissue fluid and returns it to the blood system
D.) defense against disease



Answer: maintains acid-base balance of tissue fluid

How can faculty researchers avoid undue influence of student subjects?

How can faculty researchers avoid undue influence of student subjects?


a. Provide extra credit to those who participate
b. Conduct research for less than 10 minutes during class so as to not take up much class time
c. Offer more monetary compensation
d. Avoid using their own students in their research


Answer: d

Which of these phosphorylates ADP to make ATP?

Which of these phosphorylates ADP to make ATP?



Which of these phosphorylates ADP to make ATP?
Which of these phosphorylates ADP to make ATP?


Answer: E

Which of these is exhibiting kinetic energy?

Which of these is exhibiting kinetic energy?



A) a space station orbiting Earth
B) a rock on a mountain ledge
C) an archer with a flexed bow
D)a person sitting on a couch while watching TV
E)the high-energy phosphate bonds of a molecule of ATP


Answer: A

Which statements about the modification of chromatin structure in eukaryotes are true?

Which statements about the modification of chromatin structure in eukaryotes are true?




  • Some forms of chromatin modification can be passed on to future generations of cells.
  • Acetylation of histone tails is a reversible process.
  • DNA is not transcribed when chromatin is packaged tightly in a condensed form.
  • Acetylation of histone tails in chromatin allows access to DNA for transcription.
  • Methylation of histone tails in chromatin can promote condensation of the chromatin.

Which of these equations best summarizes photosynthesis?

Which of these equations best summarizes photosynthesis?



A. C6H12O6 + 6 O2 → 6 CO2 + 6 H2O + Energy
B. C6H12O6 + 6 O2 → 6 CO2 + 12 H2O
C. 6 CO2 + 6 H2O → C6H12O6 + 6 O2
D. 6 CO2 + 6 O2 → C6H12O6 + 6 H2O
E. H2O → 2 H+ + 1/2 O2 + 2e-


Answer: C. 6 CO2 + 6 H2O → C6H12O6 + 6 O2

An example of an individual financial COI is:

An example of an individual financial COI is:



Answer: A researcher's wife holds equity in a publicly traded pharmaceutical company that is also the sponsor of the researcher's study.

Nucleoli are present during _____.

Nucleoli are present during _____.



  • metaphase
  • anaphase
  • interphase
  • prometaphase
  • prophase



Answer: interphase

In the diagram below, the gray unit represents _____.

In the diagram below, the gray unit represents _____.



In the diagram below, the gray unit represents _____.

In the diagram below, the gray unit represents _____.




Answer: RNA polymerase.
RNA polymerase untwists a portion of the DNA double helix.

Which of these phases encompasses all of the stages of mitosis but no other events?

Which of these phases encompasses all of the stages of mitosis but no other events?




Which of these phases encompasses all of the stages of mitosis but no other events?




Answer: Mitosis

Glycogen is _____.

Glycogen is _____.




  • a polysaccharide found in plant cell walls
  • a polysaccharide found in animals
  • the form in which plants store sugars
  • a transport protein that carries oxygen
  • a source of saturated fat



Answer: A polysaccharide found in animals

Identify the four postulates of natural selection.

Identify the four postulates of natural selection.




Answer:


-Some trait differences are heritable.
-Survival and reproductive success are variable among individuals in a population.
-Individuals in a population vary in the traits they possess.
-Individuals with certain traits are more likely to survive and reproduce.

Effective health care teams have several important characteristics, including:

Effective health care teams have several important characteristics, including:



(A) The ability to rehearse procedures together, like a choir or a sports team.
(B) Stable membership; that is, they have the same people on the team from day-to-day.
(C)
Effective communication techniques.
(D) The ability to achieve good results without strong communication.


Answer: (C) Effective communication techniques.

Data are made anonymous by

Data are made anonymous by



Answer: Destroying all identifiers connected to the data.

A researcher asks an IRB to waive the requirement for parental permission for a study conducted in schools because the nature of the research requires participation of all the children present in classrooms on the day the research will take place. Assuming that the basic research design could be approved by the IRB and the school, which of the following requirements must be met before an IRB could waive parental permission?

A researcher asks an IRB to waive the requirement for parental permission for a study conducted in schools because the nature of the research requires participation of all the children present in classrooms on the day the research will take place. Assuming that the basic research design could be approved by the IRB and the school, which of the following requirements must be met before an IRB could waive parental permission?



Answer: The research must pose no more than minimal risk.

A study that involves interviews of adults is eligible for expedited review. The researcher wants to add an adolescent population (aged 12 to 17) to the study and has designed a parental permission and assent process. No additional changes are planned. Which of the following statements about review of the revised protocol is accurate?

A study that involves interviews of adults is eligible for expedited review. The researcher wants to add an adolescent population (aged 12 to 17) to the study and has designed a parental permission and assent process. No additional changes are planned. Which of the following statements about review of the revised protocol is accurate?



Answer: Unless the nature of the questions would raise the level of risk to more than minimal for adolescents, the research would still qualify for expedited review.

An example of an individual financial COI is:

An example of an individual financial COI is:



Answer: A researcher's wife holds equity in a publicly traded pharmaceutical company that is also the sponsor of the researcher's study.

Can you match these prefixes, suffixes, and word roots with their definitions?

Can you match these prefixes, suffixes, and word roots with their definitions?



  1. chrom-
  2. trans-
  3. -some (or soma-)
  4. aqu- (or aqua-)
  5. -elle
  6. bi-
  7. inter-



  • color: chrom-
  • across: trans-
  • body: -some (or soma-)
  • water: aqu- (or aqua-)
  • little, small: -elle
  • two: bi-
  • between: inter-


Can you match these prefixes, suffixes, and word roots with their definitions?



  1. mito-
  2. eu-
  3. -cyte (or cyto-)
  4. a- (or an-)
  5. chloro-
  6. endo-
  7. ex-



  • thread: mito-
  • true, good: eu-
  • cell: -cyte (or cyto-)
  • without, lack of, not: a- (or an-)
  • green: chloro-
  • inside, inner: endo-
  • out of: ex-


Can you match these prefixes, suffixes, and word roots with their definitions?



  1. hypo-
  2. -phyll
  3. sym-
  4. phago-
  5. -plasm
  6. hyper-
  7. micro-



  • below, less than: hypo-
  • leaf: -phyll
  • same: sym-
  • eat: phago-
  • formed substance: -plasm
  • above, greater than: hyper-
  • small: micro-
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