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Midterm Biology
Midterm Biology
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Midterm for Bio
Flashcards
25 cards
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Practice quiz
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Questions
25
Answers
1
Which of the following statements explains why the nucleus is important to cells?
The nucleus contains coded instructions for making proteins.
The nucleus transports proteins
The nucleus is surrounded by a nuclear envelope.
The nucleus makes ribosomes
2
Which of the following organisms are prokaryotes?
plants
animals
bacteria
all of these
3
What is an organism that feeds only on plants called?
detritivore
carnivorne
herbivore
omnivore
4
Identify the reactant(s) in the chemical reaction, CO2 + H2O --> H2CO3.
CO2, H2O, and H2CO3
CO2
H2CO3
CO2 and H2O
5
Which organelle makes proteins using coded instructions that come from the nucleus?
golgi appartatus
mitochondria
ribosome
vacuole
6
Enzymes affect the reactions in living cells by changing the
pH of the reaction.
speed of the reaction.
products of the reaction.
temperature of the reaction.
7
Which organelles help provide cells with energy?
smooth endoplasmic reticulum
rough endoplasmic reticulum
mitochondria and chloroplasts
Golgi apparatus and ribosomes
8
Which structure contains the other?
nucleus; genetic material
nucleus; cytoplasm
prokaryote; organelles
cell membrane; cell wall
9
Water molecules are polar, with the
oxygen and hydrogen sides being slightly positive.
oxygen and hydrogen sides being slightly negative.
oxygen side slightly - and the hydrogen side slightly +.
oxygen side slightly + and the hydrogen side slightly -
10
Which of the following organic compounds is the main source of energy for living things?
Nucleic Acids
Proteins
Carbohydrates
Lipids
11
Which of the following organisms does NOT require sunlight to live?
chemosynthetic bacteria
photosynthetic bacteria
algae
trees
12
Diffusion is the movement of molecules from
an area of equilibrium to an area of high concentration.
area of high concentration to an area of low concentration.
area of low concentration to an area of high concentration.
all of these
13
The nucleus is made up of
electrons and neutrons.
protons, neutrons, and electrons.
protons and electrons.
protons and neutrons.
14
A covalent bond is formed as the result of
transferring protons.
transferring electrons.
sharing an electron pair.
sharing a proton pair.
15
Isotopes are atoms of the same element with the same number of protons and
a different number of electrons.
a different number of neutrons.
a different number of molecules.
the same number of neutrons.
16
Which means of particle transport requires input of energy from the cell?
diffusion
osmosis
facilitated diffusion
active transport
17
Which organelle would you expect to find in plant cells but not animal cells?
ribosome
chloroplasts
mitochondria
smooth ER
18
The three particles that make up an atom are
protons, neutrons, and isotopes.
neutrons, isotopes, and electrons.
protons, neutrons, and electrons.
positives, negatives, and electrons.
19
Which cell structure contains the cell’s genetic material and controls the cell’s activities?
cytoplasm
organelle
nucleus
cell membrane
20
What is the term used to describe the energy needed to get a reaction started?
activation energy
chemical energy
adhesion energy
cohesion energy
21
The thin, flexible barrier around a cell. Allows some items in and out
cytoplasm
nucleus
cell wall
cell membrane
22
When salt is dissolved in water, water is the
reactant
solution
solute
solvent
23
Biology is the study of ___________.
life
echoes
physical world
chemicals
24
Green plants are
herbivores
producers
omnivores
consumers
25
Which of the following contains a nucleus?
bacteria
prokaryotes
organelles
eukaryotes
