WorksheetsBiology 2-Mid Term Practice
Total questions: 75
Worksheet time: 38mins
Name
Class
Date
1.
What connects the two photosystems of photosynthesis?
a)
Reductase Enzyme
b)
Protein Channels
c)
Electron Transport Chain
d)
None of these
2.
During the light reactions _____.
a)
Water is split into O2
b)
ATP is created
c)
NADPH is created
d)
All of these
3.
Chlorophyll reflects (does not absorb) which color of light?
a)
red
b)
yellow
c)
green
d)
orange
4.
Which of the following is an example of a heterotroph?
a)
Flower
b)
Photosynthetic Bacteria
c)
Dog
d)
None of these
5.
Where in a plant cell is chlorophyll found?
a)
In the outer chloroplast membrane.
b)
In the stroma
c)
In the Thylakoid
d)
None of these
6.
The oxygen released during photosynthesis comes from
a)
carbon dioxide
b)
glucose
c)
ribulose phosphate
d)
water
7.
3 of the 4 below are heterotrophs. Choose the exception.
a)
Fungus
b)
Carrot
c)
Earthworm
d)
Lobster
8.
Plants need which of the following to carry out photosynthesis?
a)
H2O
b)
CO2
c)
O2
d)
Both H2O and CO2
9.
The carbon source for organisms that derive their energy from photosynthesis is ____.
a)
Carbon Monoxide
b)
Carbon Dioxide
c)
Hydrocarbons
d)
Methane
10.
Thylakoids are stacked into structures in the chloroplast referred to as_____.
a)
Grana
b)
Photosystems
c)
Complexes
d)
Transport Chains
11.
The light reactions start with
a)
Photosystem I
b)
ATP Synthase
c)
Photosystem II
d)
NADP+ Reductase
12.
Thylakoids are...
a)
stacked
b)
participate in the dark reactions
c)
both A and B
d)
None of these
13.
Which of the following is a high energy molecule created during the light reactions of photosynthesis?
a)
NADPH
b)
NADH
c)
FADH2
d)
None of these
14.
The area outside the thylakoids in the chloroplast is referred to as the _____.
a)
Grana
b)
Stroma
c)
Inner Membrane
d)
Thylakoid Space
15.
3 of the 4 below are participants in photosynthesis. Choose the exception.
a)
Photosystem
b)
Chlorophyll
c)
Mitochondrion
d)
Thylakoid
16.
The ultimate output of the calvin cycle is ____.
a)
G3P
b)
Glucose
c)
Sucrose
d)
Starch
17.
What class of biological molecules does glycogen belong to?
a)
Proteins
b)
Lipids
c)
Nucleic Acids
d)
Carbohydrates
18.
What is the valence of Carbon?
a)
2
b)
3
c)
4
d)
5
19.
If a substance has a pH of 12, then it has a high concentration of ___ ions.
a)
H+
b)
OH-
c)
Na+
d)
Cl-
20.
OH- is the ____ ion.
a)
Hydroxide
b)
Hydronium
c)
Hydrogen
d)
Hydroxyl
21.
Which letter represents the activation energy without enzymes?
a)
A
b)
B
c)
C
d)
It is not pictured.
22.
Which letter represents the activation energy with enzymes?
a)
A
b)
B
c)
C
d)
it is not pictured.
23.
An example of a hydrogen bond is the bond between
a)
the H of one water molecule and the O of another water molecule.
b)
Mg+ and Cl- in MgCl2
c)
Na+ and Cl- in NaCl
d)
The two hydrogen atoms in a molecule of H2
24.
Which funtional group constitutes an alcohol?
a)
-OH
b)
-SH
c)
-COOH
d)
-CH3
25.
Which type of bond must be broken for water to vaporize?
a)
Polar Covalent
b)
Hydrogen Bonds
c)
Ionic Bonds
d)
Non Polar Covalent Bonds
26.
What organelle is assembled in the nucleolus?
a)
Ribosome
b)
Mitochondria
c)
Chloroplast
d)
Lysosome
27.
All chromosomes not involved in determining sex are called
a)
Sex Chromosomes
b)
X Chromosomes
c)
Autosomes
d)
Y Chromosomes
28.
The correct operational sequence of the three processes listed below is:
I. Glycolysis
II. Electron Transport Chain
III. Citric Acid Cycle
I. Glycolysis
II. Electron Transport Chain
III. Citric Acid Cycle
a)
I-->II-->III
b)
I-->III-->II
c)
II-->I-->III
d)
II-->III-->1
29.
In competitive inhibition, ____.
a)
An inhibitor does not bind to the enzyme’s active site.
b)
An inhibitor binds to the enzyme’s active site.
c)
A substrate can successfully bind to the active site.
d)
None of the above.
30.
Organic chemistry is the science based on the study of ___.
a)
Water and its interactions.
b)
Carbon Compounds.
c)
Inorganic Compounds
d)
Functional Groups
31.
Oxygen stabilizes the electron during the electron transport chain by combining with 2 electrons to form ____________.
a)
Oxygen
b)
Water
c)
Carbon Dioxide
d)
Pyruvate
32.
Prokaryotic Cells DO NOT have
a)
nucleoid regions
b)
membrane bound nucleus
c)
cytoplasm
d)
ribosomes
33.
In mitosis, if a parent cell has 16 chromosomes, then a daughter cell will have how many chromosomes?
a)
64
b)
32
c)
16
d)
8
34.
All organic compounds must contain ___.
a)
Carbon
b)
Hydrogen
c)
Oxygen
d)
Nitrogen
35.
A chain of 3 or more amino acids joined together is referred to as a ____.
a)
Disaccharide
b)
Polypeptide
c)
Nucleotide
d)
Dipeptide
36.
One of the following people set up a closed system to mimic Earth’s early atmosphere and discharged electrical sparks through it. A variety of organic compounds common in organisms were formed. Who did this?
a)
August Kekule
b)
Hermann Kolbe
c)
Friedrich Wohler
d)
Stanley Miller
37.
Glycolysis
a)
Occurs in the mitochondria.
b)
Results in the production of 8 ATP molecules.
c)
Results in the production of ATP and occurs in the cytoplasm.
d)
None of these
38.
Which of the following are found either as free in the cytosol or bound to the endoplasmic reticulum?
a)
Ribosomes
b)
Chloroplast
c)
Mitochondria
d)
Lysosome
39.
A mixture of salt and water. Water is the ____.
a)
Solution
b)
Solvent
c)
Solute
d)
None of the above.
40.
Crossing over
a)
generally results in binary fission.
b)
involves nucleoli
c)
involves breakages and exchanges being made between sister chromatids
d)
alters the composition of chromosomes through exchanges being made between non sister chromatids.
41.
Chromatids that are attached at the centromere are called what kind of chromatids?
a)
mother
b)
daughter
c)
sister
d)
programmed
42.
The sister chromatids become separated during ______ of meiosis.
a)
metaphase I
b)
anaphase I
c)
telophase II
d)
anaphase II
43.
Steroids are classified as ___.
a)
Proteins
b)
Lipids
c)
Nucleic Acids
d)
Carbohydrates
44.
In a DNA sample, Thymine will bind to ____.
a)
Adenine
b)
Thymine
c)
Guanine
d)
Cytosine
45.
Which type of protein speeds up chemical reactions?
a)
Structural
b)
Enzymes
c)
Transport
d)
Storage
46.
The chromosomes detach from one another and become visibly separate during
a)
anaphase
b)
metaphase
c)
interphase
d)
prophase
47.
The starting reactant of glycolysis is a 6 carbon sugar named ___.
a)
Glucose
b)
Sucrose
c)
Galactose
d)
Fructose
48.
Hydrophobic substances, such as vegetable oil, are
a)
Polar substances that have an affinity for water.
b)
Charged molecules that hydrogen bond with water molecules.
c)
Non polar substances that repel water.
d)
Polar substances that repel water.
49.
The chromosomes and genes are actually replicated during
a)
anaphase
b)
metaphase
c)
interphase
d)
prophase
50.
Oxygen's _____ results in a net negative charge on the oxygen atom of water.
a)
High electronegativity.
b)
Low Electronegativity
c)
Affinity for protons
d)
Affinity for neutrons.
51.
Which explains the difference between a saturated and non saturated fat?
a)
A saturated fat contains no doubles bonds, an unsaturated fat contains at least 1 double bond.
b)
Unsaturated fats include animal fats, such as beef fat.
c)
Saturated fats are solid at room temperature, but unsaturated fats are liquid.
d)
A and C
52.
What class of biological molecules do oils belong to?
a)
Proteins
b)
Lipid
c)
Nucleic Acids
d)
Carbohydrates
53.
The slight negative charge at one end of one water molecule is attracted to the slight positive charge of another water molecule. What is this attraction called?
a)
Ionic Bond
b)
Hydrophillic Bond
c)
Covalent Bond
d)
Hydrogen Bond
54.
Which represents the complementary strand of DNA? 5’-AAATGCCGT-3’
a)
5'-TTACGGCA-3'
b)
3'-TTACGGCA-5'
c)
3'-UUUACGGCA-5'
d)
5'-UUUACGGCA-3'
55.
The bonding of two amino acids to form a larger molecule requires the formation of a ____ bond.
a)
Peptide
b)
Ester
c)
Glycosidic
d)
All of these
56.
Which of the following is NOT a function of a lipid?
a)
Energy Storage
b)
Cushion of vital organs.
c)
Insulation
d)
Storage of Sugar
57.
Which disease is caused by a single amino acid substitution in the protein hemoglobin?
a)
Sickle Cell
b)
Cystic Fibrosis
c)
Diabetes
d)
None of these
58.
On food packages, what does the term "insoluble fiber" refer to?
a)
Cellulose
b)
Chitin
c)
Starch
d)
Polypeptides
59.
These are the site of glucose (food) production in plants.
a)
Chloroplasts
b)
Mitochondria
c)
Ribosomes
d)
Chromosomes
60.
ATP is
a)
The energy currency of the cell.
b)
made during photosynthesis
c)
broken down during cellular repsiration
d)
none of these
61.
Sexual reproduction
a)
leads to uniform characteristics in a population.
b)
results in new combinations of genetic traits.
c)
Produces genetic clones.
d)
Requires less tissue differentiation than asexual reproduction.
62.
Pyruvate can be reagarded to as the end product of ___.
a)
Glycolysis
b)
Citric Acid Cycle
c)
Electron Transport Chain
d)
Fermentation
63.
Which is not a part of ALL cells?
a)
Cell Membrane
b)
Cell Wall
c)
DNA
d)
Ribosomes
64.
3 of the 4 below are stages of actual nuclear division. Pick the exception.
a)
Anaphase
b)
Prophase
c)
Interphase
d)
Telophase
65.
H3O+ is the ___ ion.
a)
Hydroxide
b)
Hydronium
c)
Hydrogen
d)
Hydroxyl
66.
Small building blocks that can build larger molecules are called _____.
a)
Polymers
b)
Dimers
c)
Peptides
d)
Monomers
67.
Which of the following is not found in an animal cell?
a)
Mitochondria
b)
Large, Central Vacuole
c)
Cytoskeleton
d)
Cell Membrane
68.
An organelle found in the nucleus is the ____.
a)
Vacuole
b)
Flagellla
c)
Nucleolus
d)
None of the above
69.
Anything with a pH lower than 7 is a(n) ____.
a)
Acid
b)
Base
c)
Neutral
d)
None of the above
70.
After meiosis one, daughter cells are
a)
haploid
b)
diploid
c)
2n
d)
Genetically identical
71.
Which term includes all the others?
a)
Monosaccharide
b)
Disaccharide
c)
Polysaccharide
d)
Carbohydrates
72.
Why does ice float in liquid water?
a)
Hydrogen bonds stabilize and water molecules move farther apart, causing ice to be less dense.
b)
Liquid water molecules have more kinetic energy.
c)
Ice has air bubbles that keep it afloat.
d)
None of the above.
73.
How many electrons does Lithium have in its valence shell?
a)
1
b)
2
c)
3
d)
4
74.
Which process liberates the most energy in the form of ATP?
a)
Aerobic Respiration
b)
Anaerobic respiration
c)
Alcoholic Fermentation
d)
Lactic Acid Fermentation
75.
The chromosomes are aligned down the cell equator during
a)
anaphase
b)
metaphase
c)
interphase
d)
prophase
100 %
