Quiz 1 - chemistry, cells and organs Quizzes Home Summary Submissions Selected Reports Lee Vang (username: vanglee2) To Submissions Attempt 1 Written: Sep 23, 2011 9:10 AM - Sep 23, 2011 9:32 AM Submission View Your quiz has been submitted successfully. chemistry Question 1 2 / 2 points A molecule is a combination of two or more atoms. less stable than it's constituent atoms separated. electrically charged. a carrier of one or more extra neutrons none of these chem of life Question 2 2 / 2 points In warm-blooded animals such as humans, which of these is most important for regulating the rate of chemical reactions? changing concentration of reactants changing temperature changing concentration and activity of enzymes catalyzing the reaction nature of reacting substances - carbohydrates react faster than lipids, for example 21831205368335
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Quiz 1 - chemistry, cells and organs
Quizzes Home
Summary
Submissions Selected
Reports
Lee Vang (username: vanglee2)To Submissions
Attempt 1
Written: Sep 23, 2011 9:10 AM - Sep 23, 2011 9:32 AM
Submission View
Your quiz has been submitted successfully.
chemistryQuestion 1 2 / 2 pointsA molecule is
a combination of two or more atoms.
less stable than it's constituent atoms separated.
electrically charged.
a carrier of one or more extra neutrons
none of these
chem of lifeQuestion 2 2 / 2 pointsIn warm-blooded animals such as humans, which of these is most important for regulating the rate of chemical reactions?
changing concentration of reactants
changing temperature
changing concentration and activity of enzymes catalyzing the reaction
nature of reacting substances - carbohydrates react faster than lipids, for example
The basic building block of proteins is a(n) _____
polysaccharide
phospholipid
steroid
amino acid
monosaccharide
osmosis etcQuestion 4 0 / 2 pointsDoes the concentration of Na+ and Cl- ions affect the diffusion of glucose molecules?
No
Yes
cells tissues
Question 5 2 / 2 pointsThe organ system that consists of glands such as the pituitary and thyroid glands and is a major regulatory system is the _____ system.
cardiovascular
skeletal
digestive
integumentary
endocrine
Question 6 2 / 2 pointsGlands that produce hormones belong to the _____ system.
cardiovascular
digestive
immune
urinary
endocrine
Question 7 2 / 2 pointsWhich of the following is FALSE regarding epithelial tissue?
might be found lining hollow organs
characterized by its extracellular matrix
connected to an underlying connective tissue
rich in blood vessels
might regulate absorption of materials
Question 8 2 / 2 pointsWhich of the following is not a primary tissue type?
lung
muscle
nervous
epithelial
connective
Question 9 2 / 2 pointsWhich of the following substances is most likely to passively diffuse across the plasma membrane by dissolving in the membrane?
an ion
a nonpolar molecule
a polar molecule
simple sugars
amino acids
homeostasisQuestion 10 0 / 2 pointsThe study of the body's organization that considers the heart, blood and all of the associated blood vessels as a unit is called _____.
systemic anatomy
regional anatomy
surface anatomy
physiology
anatomical imaging
chemistryQuestion 1 2 / 2 pointsAfter a neutral atom looses an electron in chemical bonding, it becomes _____.
postively charged
negatively charged
polar covalent
a molecule
more than one of these
chem of lifeQuestion 2 2 / 2 pointsUracil is a type of _____.
amino acid
triglyceride
fatty acid
nucleotide
carbohydrate
Question 3 2 / 2 pointsA chemical capable of maintaining the pH of a solution nearly stable is called a(n) _____.
acid
base
salt
catalyst
buffer
osmosis etcQuestion 4 2 / 2 pointsConsider a molecule of glucose and a molecule of glycogen at the outer edge of the cytoplasm. Now considering only diffusion,which one would be expected to reach a distant site within the cell sooner?
glucose
glycogen
they would arrive at the same time
cells tissuesQuestion 5 2 / 2 pointsWhich tissue type is specialized for contraction?
simple squamous
simple columnar
areolar
dense connective
muscle
Question 6 2 / 2 pointsThe rough ER is a membranous system associated with _____.
chromosomes
lysosomes
microfilaments
ribosomes
vacoules
Question 7 2 / 2 pointsThe organ system that consists of the skin, hair, and nails and protects the body and prevents water loss is the _____ system
cardiovascular
skeletal
digestive
integumentary
endocrine
Question 8 2 / 2 pointsSimple epithelial tissues consist of _____ layer(s) of cells.
1
2
3
4
5
Question 9 2 / 2 points
The basic living unit of all life is the _____.
organ
cell
organelle
organ system
tissue
homeostasisQuestion 10 2 / 2 pointsThe organ system that maintains tissue fluid balance, filters foreign material from blood and lymph, absorbs fats from the digestive tract, and combats disease is the _____ system.