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TEAS > Science > Flashcards

Science Flashcards

1
Q

Functions of bile (3)

A

1- emulsify fats
2- assist with absorption of fats in intestine
3-Release bilirubin and excess cholesterol into intestinal tract as waste

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2
Q

Properties of alkali metals (6)

A 
1-low melting and boiling pts
2-low densities
3- extremely reactive with water
4-malleable and easily cut
5-do not occur in a free form in nature
6-Excellent conductors of electricity
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3
Q

Criteria for a base (7)

A

1-phenolphthalein turns pink and litmus paper turns blue
2-slippery feel
3- conducts electricity in aqueous solution
4- reacts with fats to create soap compounds
5- bases and acids neutralize each other and form water and salt
6- pH of 8-14
7- bitter to taste

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4
Q

Criteria for an acid

A
  1. They are liquids.
  2. They are solutions of compounds in water.
  3. If concentrated they can be corrosive.
  4. Acids taste sour (for example, vinegar).
  5. Turn blue litmus paper red - this is an easy test for an acid!
  6. Usually react with metals to form salts.
  7. Acids contain hydrogen ions.
  8. Turn Universal Indicator from green to red, and have a pH less than 7.
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5
Q

Names of the b vitamins 1-5

A 
B1- thiamine
B2- riboflavin
B3- niacin
B4- adenine
B5- pantothenic acid
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6
Q

What does renin do?

A

Converts angiotensinogen to angiotensin I.

Stimulates angiotensinogen.

It is a hormone.

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7
Q

How many spinal nerves does the body have?

Pairs?

A

62 spinal nerves

31 pairs

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8
Q

Difference between anions and cations. And list examples of each:

A

Anions: negatively charged atoms.
— bromide, chloride and fluoride

Cations: positively charged atoms-has more electrons than protons.
—iron, lead, sodium

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9
Q

Archimedes’ principle

A

Has to do with buoyancy.

If the weight of the water displaced is less than the weight of the object, the object will sink. Otherwise the object will float, with the weight of the water displaced equal to the weight of the object.

Weight of Water displaced is equal to the weight of the object floating.

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10
Q

Punnett square

A

Boxes used to look at possible gene traits

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11
Q

Dependent variable

A

Variable the researcher is interested in as a possible effect of some action or thing.

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12
Q

Antibodies bind to what?

A

Antigens.

Antibodies are produced by B lymphocytes. They bind to specific antigens - proteins attached to surface of pathogen.

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13
Q

Large intestines functions: (4)

A

Absorption
Bacterial digestion
Defecation
Peristalsis

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14
Q

Protein synthesis represents enzyme and protein production of DNA.
What are the steps?

A

Protein synthesis occurs during the S phase of interphase in mitosis.

Transcription
RNA processing
Translation

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15
Q

Bilirubin is a waste product of:

A

Waste product of breakdown of hemoglobin.

Old erythrocytes are broken down in liver and spleen. After iron is removed, it is broken down into bilirubin. Liver changes bilirubin into bile.

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16
Q

Ipsilateral Vs. contralateral

A

Ipsilateral Means on the same side.

Contralateral means on opposite sides.

17
Q

Atomic number is equal to number of:

A

Electrons

18
Q

Energy levels or shells of an atom has a max # of electrons.
What are the max numbers of each shell?

A 
2 electrons
8
18
32
50
72
19
Q

Elevated eosinophils can be caused by:

A

Seasonal allergies
Parasitic infection
Cancer

20
Q

Hierarchy of biological classification system

A 
Domain
Kingdom
Phylum
Class
Order
Family 
Genus
Species
Subspecies
21
Q

In chemical equations, what is located to left and right of the arrow?

A

reactant: Left of arrow
Products: right

22
Q

What do chemical reactions produce (create)?

A

Create new substances

Do not create new elements.

23
Q

What is dry ice?

A

Solid form of carbon dioxide.

Sublimation is process of changing from solid to a gas without Passing through a liquid state.

24
Q

Chemical reactions cause:

A

A new material is formed.
Heat is taken in or given off.
Does NOT form new element.

25
Q

Milk turning sour is example of what?

A

Chemical change

26
Q

How many kilograms is one liter of water?

A

One liter of water equals one kilogram.

27
Q

Atomic number of an element is equal to what?

A

Its total number of electrons.

28
Q

Spermatogenesis

A

Process of sperm production via meiosis. Begins at puberty.

29
Q

Which enzyme is used to catalyze fats? And where is it produced?

A

Lipase

Produced in pancreas and small intestine.

30
Q

Which enzyme is used to catalyze starch? And where is it produced?

A

Amylase

Produced in pancreas, salivary glands, small intestines.

31
Q

Which enzyme is used to catalyze lactose? And where is it produced?

A

Lactase

Produced in small intestine

32
Q

Which enzyme is used to catalyze protein? And where is it produced?

A

Pepsin

Produced in pancreas, small intestine and stomach

33
Q

Difference between strong acids and weak acids?

A

Strong acids: release many ions, strong conductors of electricity

Weak acids: release few ions and weak electrical conductors.

34
Q 
Describe types of research:
Empirical 
Participatory
Retrospective 
Experimental
A

Empirical: based on observation

Participatory: participating

Retrospective: done after the fact

Experimental: manipulate to see what happens

35
Q

IgE

A

Induced basophils and mast cells to secrete histamine.
Does not cross placenta.

(Only IgG can cross placenta)

36
Q

Sequence of cardiac conduction

A

SA node> AV node> bundle of His> purkinje fibers

37
Q

Relationship of diaphragm and pressure in lungs.

A

Diaphragm and intercostals contract, pressure decreases in lungs. Decreased pressure allows air to flow into lungs.

Diaphragm relaxes, pressure increases.

TEAS (4 decks)

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