Module 1 Flashcards
(170 cards)
Which of the following is a trace element in living things?
Chromium
An atom’s valence electron shell
determines its chemical reactivity
A covalent bond occurs when
electrons are shared between two atoms to complete their valence shells
When a sodium atom transfers an electron to a chlorine atom
the ions will separate in the presence of water.
The figure below is depicting the interaction of water molecules with one another. The weak attractions between water molecules are known as
hydrogen bonds
A space-filling model shows formation of different bonds between neighboring red and grey atoms of 5 adjacent molecules.
A(n) ________Blank can be defined as a substance that keeps pH within established limits by taking up excess H+ or OH- in a solution.
buffer
All atoms of the same element have the same
atomic number
An ionic bond forms when
a positively charged ion is attracted to a negatively charged ion.
When a positively charged hydrogen in a water molecule become attracted to the negatively charged oxygen in a nearby water molecule, this is referred to as a(n)
hydrogen bond
The subatomic particles that are found within the nucleus of an atom are the
neutrons and protons
Hydrolysis of maltose, a disaccharide, results in
two monosaccharides.
A triglyceride is formed when three fatty acids join a glycerol by
dehydration synthesis reactions.
Which of the following correctly lists the parts of a nucleotide of RNA?
nitrogen-containing base, ribose, phosphate
A saturated fat has
* one bond
* two bonds
* no double bonds
no double bonds
Which of the following is in correct order from largest to smallest?
polypeptide - dipeptide - amino acid
Select the incorrect association:
1. glucose - monosaccharide
2. cellulose - building block for cell walls in plants
3. sucrose - polysaccharide
4. lactose - a disaccharide
5. starch - a long chain of glucose molecules
sucrose - polysaccharide
The polymer shown below is comprised of what kind of subunits:
* G-C
* T-A
* C-G
* A-T
Think about the double stand helix
nucleotides
Which of the following is an organic molecule?
C5H10O5
Starch is a ________Blank made of many ________Blank.
polymer; glucose molecules
The four main categories of organic macromolecules are
carbohydrates, lipids, proteins, and nucleic acids.
Which of the following is a correct match?
* ribosomes – protein synthesis
* Golgi apparatus - production of cellular ATP
* mitochondria - protein alteration and packaging
* lysosomes – lipid synthesis
* smooth endoplasmic reticulum - storage of water
ribosomes – protein synthesis
Which organelle modifies the contents within vesicles and then repackages them for export?
1. * smooth ER
1. rough ER
1. Golgi apparatus
1. ribosomes
1. 1. plasma membrane
Golgi apparatus
Both plants and animals need mitochondria to
produce ATP