Chapters 1-2
Chapters 2-3
Chapters 3-4
Chapters 5-7
Chapters 7-9
100
The smallest unit of life is the _________. A. atom B. molecule C. cell D. organism
Answer: C – cells are the smallest unit of life.
100
Proteins are made of ______________________.
Answer: Proteins are made of Amino acids.
100
Which of the following require energy inputs? A. diffusion and passive transport B. active transport, endocytosis, and exocytosis C. diffusion, active transport, and exocytosis D. passive transport and endocytosis
Answer: B – active transport, endocytosis, and exocytosis all require energy inputs. Diffusion and passive transport do NOT require energy inputs.
100
In a plant, which of the following items are organic molecules that can absorb light of a certain wavelength? A. chloroplasts B. leaves C. pigments D. all of these
Answer: C - pigments
100
True or False? Human gamete cells (eggs and sperm) each contain 46 chromosomes.
Answer: False. They each contain 23 chromosomes (for a grand total of 46).
200
A water molecule is polar: A. because it is negatively charges. B. because it is positively charged. C. because each hydrogen is charged negatively while oxygen is charged positively. D. because oxygen pulls the shared electrons a bit more than either hydrogen.
Answer: C – polar means having an uneven distribution of charge, while non polar means having an even distribution of charge.
200
What is the difference between prokaryotic and eukaryotic cells?
Answer: eukaryotic have a nucleus; prokaryotic do not.
200
No animal cell has a: A. plasma membrane B. flagellum C. lysosome D. cell wall
Answer: D – cell wall
200
The end product of glycolysis is ____________________. A. citrate B. oxaloacetate C. pyruvate D. acetyl-CoA
Answer: D – acetyl-CoA is the end product of glycolysis.
200
RNAs form by _______________; proteins form by ___________________. A. replication; translation B. translation; transcription C. transcription; translation D. replication; transcription
Answer: C – RNAs form by transcription; proteins form by translation.
300
Two part question: 1. This means water loving (dissolves easily in water, such as salt)_____________. 2. This means water dreading (resists dissolving in water)____________________.
Answer: Water loving = hydrophilic. Water dreading = hydrophobic.
300
If you put a cell in a hypotonic solution, the water will tend to: A. move into the cell B. move out of the cell C. Show no net movement D. Move in by endocytosis
Answer: A – move into the cell and cause it to swell (if you are hypo – think of LOW energy, you will swell up and get fat). In hypertonic solution, the water will tend to move out of the cell, causing it to shrink (if you are hyper – think HIGH energy – you will shrink and get skinny). In isotonic solution, there will be no net movement because “iso” means “same,” so everything stays the same.
300
In this enzyme-mediated chemical reaction, cells use energy to build and break down organic molecules. A. feedback inhibition B. osmosis C. metabolism D. cohesion
Answer: C – metabolism (metabolic pathway)
300
Which of the following are found in BOTH plant and animal cells? A. centrioles, cell wall, and nucleus B. nucleus, Golgi body, and chloroplasts C. vacuoles, nucleolus, and starch rains D. ribosomes, mitochondria, and plasma membranes
Answer: D – ribosomes, mitochondria, and plasma membranes are found in both plant and animal cells.
300
During the meiosis I (first) division cycle A. sister chromatids are separated B. Homologous pairs of chromosomes are separated C. Chromosomes are duplicated D. Both a & b
Answer: B – Homologous pairs of chromosomes are separated (sister chromatids are separated during the second cycle).
400
3 part question: 1. In this bond, atoms lose or gain electron, as in table salt. 2. In this bond, atoms share electrons, as in water. 3. In this bond, Hydrogen atoms are attracted to negatively charged atoms.
Answer: 1. In an ionic bond, atoms lose or gain electrons, as in table salt. 2. In a covalent bond, atoms share electrons, as in water. 3. In a hydrogen bond, Hydrogen atoms are attracted to negatively charged atoms.
400
Describe the structure of the plasma membrane (phospholipid bilayer).
Answer: The plasma membrane is a fluid-filled balloon with a double layer of phospholipids arranged tail-to-tail.
400
This is the main energy currency (it releases energy and is a short term energy storage chemical for all cells). A. Hydrogen B. Oxygen C. Phosphate D. ATP
Answer: D - ATP
400
Double helix structure (two strands that wind around each other). Base pairs (A&T, C&G) bind in center using Hydrogen bonds. This describes the structure of _______. A. Cells B. DNA C. ATP D. Autosomes
Answer: B - DNA
400
If two healthy parents, who are both carriers of the recessive allele, have a child, what is the chance that the child will get the recessive allele? A. 25% B. 50% C. 75% D. 0%
Answer: A – 25%
500
Name these four kinds of Polymers: 1. ______________ is made from simple sugars. 2. ______________ is made from fatty acids. 3. ______________ is made from amino acids. 4. ______________ is made from nucleotides.
Answer: 1. Carbohydrates are made from simple sugars. 2. Lipids are made from fatty acids. 3. Proteins are made from amino acids. 4. Nucleic acids are made from nucleotides.
500
______________are to proteins as ________________ are to nucleic acids. A. sugars, lipids B. sugars, proteins C. amino acids, hydrogen bonds D. amino acids, nucleotides
Answer: D – Amino acids are to proteins as nucleotides are to nucleic acids.
500
Energy ___________________. A. cannot be created or destroyed. B. can change from one form to another. C. tends to disperse spontaneously. D. all of the above.
Answer: D – all of the above.
500
Four part question: 1. _______is a mutation in which one or mare base pairs are lost. 2. _______is a mutation in which one or more base pairs become inserted into DNA. 3. _______is a mutation in which a single base-pair changes. 4. _______is the process by which cells become specialized.
Answers: 1. Deletion is a mutation in which one or mare base pairs are lost. 2. Insertion is a mutation in which one or more base pairs become inserted into DNA. 3. Base-pair Substitution is a mutation in which a single base-pair changes. 4. Differentiation is the process by which cells become specialized.
500
A father has a recessive X-linked allele. What is the chance he will pass it on to his son? A. 25% B. 50% C. 75% D. 0%
Answer: D – 0% (Males cannot transmit a recessive X-linked allele to their sons)
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