unit 1 test

How can blood at a death scene be analyzed?

- patterns of spatter are measured and provide clues to the event that occurred - size of blood droplets can indicate height at which it fell -DNA from the blood can provide further information all of them

Which of the following is a reason for documentation of sources?

-to demonstrate the reliability of the source -to recognize and give credit to the author -so others can read the source for additional information (All of the above.)

A person is found dead by a neighbor. What career is involved in notifying the police and calling an ambulance?

. 911 Operator

Cytosine makes up 38% of the nucleotides in a sample of DNA from an organism. Approximately what percentage of the nucleotides in this sample will be adenine?

12%

A body was found and the rectal temperature was measured to be 91.7 degrees Fahrenheit at 6:30pm. Using the Glaister Equation:

2 pm

Which of the following best illustrates the increasing levels of complexity?

3, 1, 2, 5, 4, 6

Which of these is correct according to Chargaff's base pairing rule?

A = T

A clear prediction of the anticipated results in an experimental design is known as?

A Hypothesis

Which of the following situations would not be allowed according to the HIPAA Privacy Rules?

After a tornado disaster, the medical facility notifies the media on the condition of the mayor's daughter, who was a victim

What evidence found at the crime scene would always contain DNA?

Blood

Given the DNA strand GAATTCCTCGAG, what would be the complimentary strand to make the double stranded DNA?

CTTAAGGAGCTC

Which body system is most closely associated with transport and delivery?

Cardiovascular

What shape of blood stain is produced when a droplet of blood strikes a horizontal surface at 90 degrees?

Circular

The part of the experiment where the independent variable being tested in not applied so that it may serve as a standard for comparison.

Control Group

In an experiment the measured effect, outcome, or response in which the research is interested is called the:

Dependent variable

In the DNA isolation lab, what was the purpose of the detergent?

Dissolve the cell and nuclear membrane

What person is responsible for providing short-term care for people being transported to the hospital?

EMT

The application of scientific knowledge to answer questions of civil and criminal law.

Forensic science

Which of the following bases is a purine?

Guanine

In an experiment the variable that is manipulated by the researcher is called the:

Independent variable

Which body system is most closely associated with the support and protection of the body organs?

Musculatory

Which body system is most closely associated with information assessment?

Nervous

DNA is a very large molecule (a polymer) made up of a long chain of repeating sub-units called _____________.

Nucleotides

In DNA profiling by gel electrophoresis, DNA is separated on the basis of?

Number of base pairs (BP)

Scientists are able to produce millions of copies of a specific DNA sequence from a small amount of DNA through the process of:

Polymerase Chain Reaction

dNA is cut at specific nucleotide sequences by

Restriction Enzymes

Which suspect can be placed at the scene of the crime based on this DNA profile?

Suspect 4

What characteristic separates DNA fragments during gel electrophoresis?

The length of the DNA fragment

What property of DNA causes it to migrate to the positive pole of the electrophoresis apparatus?

The negative charge of the DNA

Where does 99% of digestion take place?

The small intestine

What type of finger print is this (it is of a right index finger) ?

Ulnar loop

What system's main role is waste removal?

Urinary

Which is not an organ of the circulatory system?

alveoli

An examination of the body after death that includes a dissection of vital organs to determine the cause of death is a (an)

autopsy

Examine the table below that shows how different substances react to three different indicators. Based on the above forensic lab analysis of the unknown substance found at this crime scene, the unknown substance is: __________________

cocaine

What is the type of test being shown below?

confirmatory

Which of the following is not one of the basic acts investigators do at crime scenes?

create models of the crime scene

Which of the following is not a part of the respiratory system?

esophagus

The smaller the DNA fragment, the:

further it moves down the gel

Which organ system plays a crucial role in body temperature regulation?

integumentary

Given all the evidence you have examined to date from Anna Garcia's crime scene, which theory of the manner of death makes the most sense at this time for Anna Garcia?

natural death

When running a gel electrophoresis, DNA will migrate towards ______________the end because DNA has a ________________charge.

negative, positive

What does PPE stand for?

personal protective equipment

Which of the following is a gland in the endocrine system?

pituitary

Which of the following is NOT a function of bones in the human skeletal system?

regulate body temperature

The endocrine system

releases hormones into the blood stream

The function of the urinary system is to control homeostasis by

removing wastes and maintaining molarity of blood

The trachea belongs to which system?

respiratory

Which body system gets waste gasses out of the blood?

respiratory

Why is a control group important for an experiment?

serves as a standard for comparison against the group where the independent variable is applied

Gel electrophoresis is used to separate the fragments of DNA. The larger pieces of DNA will travel _________________ the smaller fragments through the gel.

slower than

Researchers select 10 healthy 40 year old men and have them sit calmly in the same relaxing environment for 2 hours. Then, the researchers take their blood pressure using a standard blood pressure cuff. Next, the researchers have the same 10 people do 50 jumping jacks and measure their blood pressure again. What is the dependent variable?

the blood pressure

Which organ is involved with the maturation of T Cells (immune cells)?

thymus

Alicia wants to find out how much weight a person will gain as a result of eating Halloween candy. She will use volunteers divided into 5 groups (large population, randomly assigned). Each group will eat an equal mass of a different candy. The first group (1) eats 4 kg of Hershey's chocolate. The second group (2) will eat 4 kg of candy corn. The third (3) will eat 4 kg of Skittles. The fourth (4) will eat 4 kg of Hot Tamales. And the 5th group (5) will eat no candy. Alicia will obtain average weight per person prior to the candy eating, and again 3 days after eating the candy. She will record the average amount of weight gain per person in each group. These group members will not be allowed to be active in any way, so that they will not accidentally lose weight. Alicia's data is in the table below...

type of candy