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