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Biology midterm review 2024 Flashcards | StudBud
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Biology midterm review 2024
Biology midterm review 2024
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1
What is the proper way to carry a microscope?
By the cord.
By balancing it on your head.
One hand on the arm and one hand on the base.
By the eyepiece.
2
The three particles that make up an atom are?
Protons, Compounds, and Electrons
Protons, Neutrons, and Electrons
Compounds, Molecules, and Protons
Molecules, Neutrons, and Electrons
3
a covalent bond is formed by the
transfer of electrons
losing of electrons
sharing of electrons
gaining of electrons
4
Which scientist pair is credited with the discovery of DNA's structure?
Watson and Crick
Darwin and Wallace
Mendel and Morgan
Curie and Franklin
5
If an atom contains 11 protons and 12 neutrons, its atomic number will be:
11
12
1
23
6
The basic unit of length is the:
Inch
Liter
Meter
Gram
7
If an atom contains 3 protons, 4 neutrons, and 3 electrons its atomic mass is
4
7
3
10
8
An animal cell that is surrounded by fresh water will
shrink bc osmotic pressure causes H2O to move out of cell
burst because osmotic pressure causes H2O to move into cell
burst because solutes will move into the cell
shrink because solutes will move out of the cell
9
What does a vacuole do in a cell?
gives a cell its shape
nothing
creates energy
stores food, water and waste
10
A substance with a pH of 5 is
Neutral
Base
Acid
11
If an atom contains 11 protons and 12 neutrons, its atomic number is
1
12
11
23
12
An example of a human caused disturbance is
Growing lichens
Forest clearing
A hurricane
Wildfires
13
The branch of biology dealing with interactions among organisms and the environment
economy
ecology
recycling
modeling
14
Identify organelle I
nucleus
vacuole
chloroplast
Golgi body
15
Which of the following is NOT an abiotic factor?
salinity
plants
light intensity
temperature
16
What type of ion forms when an atom loses electrons
neutral
radioactive
negative
positive
17
What Is The Cell Wall Function?
Provides protection and support.
Provides protection and lets things in and out of the cell.
It controls everything in the cell.
Uses sun to produce food.
18
Water molecules are polar, with
the O and H sides being slightly negative
the O and H sides being slightly positive
the O side being slightly positive; H side being negative
the O side being negative; H side being positive
19
a series of steps in which a large fish eats a small fish that has eaten algae is a
food web
pyramid of numbers
pyramid of biomass
food chain
20
What are the three parts of the cell theory?
New cells are produced from pre-existing cells
All living things are made of cells
Cells are the basic units of structure and function
All of the above.
21
How many meters are in 2.4 kilometers?
24,000
2400
240
24
22
What type of chemical bond connects the complementary bases of DNA to each other?
Hydrogen bonds
Nonpolar covalent bonds
Ionic bonds
Polar covalent bonds
23
The cell membrane contains channels and pumps. What are these channels and pumps made of?
Lipids
Bilipds
Protein
Carbohydrate
24
What is commensalism?
One benefits while harming the other
Both organisms benefit
Neither benefits
One organism benefits and the other is neither harmed nor benefitted.
25
Which of the following is NOT a characteristic of all living things?
ability to move
response to the environment
ability to reproduce
growth and development
26
Plants are
primary producers.
herbivores.
primary consumers.
omnivores.
27
How much energy is passed from one organism to another in a food web?
10%
100%
90%
5%
28
Organisms that make their own food are called
autotrophic
heterotrophic
29
An atom that has lost or gained electrons.
Neutron
ion
Proton
Electron
30
What is a chemical reaction?
changing materials into new materials into different properties
changing materials into different atoms in the same bond
changing properties into props for the next stage
keeping materials the same properties
31
Which organelle converts the chemical energy stored in food into useable energy?
mitochondrion
diddly boppers
chloroplast
endoplasmic reticulum
32
What type of sugar is found in DNA
Dextrose
Sucrose
Deoxyribose
Ribose
33
The diffusion of water across a selectively permeable membrane is:
Osmosis
Tonicity
Active transport
Solute
34
A scientific hypothesis
can be tested by experiments
is based on personal beliefs
is a proven fact
35
A tool used by scientist to enlarge and view samples that are very small to be seen by the naked eye.
test tube
microscope
seismograph
telescope
36
The occular lens on a microscope has a 10x mag and you are using the 40x objective, ____ is the total magnification?
100X
1040X
140X
400X
37
What is found in the space surrounding the nucleus of an atom?
neutrons
protons
none of these are choices are correct
electrons
38
Who named cells as "cells"
Somone in our class
van Leewenhoek
Hooke
Schwann and Schleiden
39
Define diffusion
passive movement particles from high to low concentration
movement of water from high to low concentration
movement of particles from low to high concentrations
movement of organelles from high to low concentrations
40
What are the base pair rules?
C-G & A-A
A-U & C-G
C-T & A-G
A-T & C-G
41
Which cell structure makes proteins?
cholorplast
mitochondria
ribosome
golgi apparatus
42
Which of the following organisms are prokaryotes?
plants
fungi
animals
bacteria
43
A symbiotic relationship in which both members benefit
Parasitism
Commensulism
Mutualism
Monogomy
44
Which of these is an example of mutualism?
A fish protecting a shrimp, who builds a burrow for them to share
A peacock courting and mating a peahen
Lamprey and fish
Tongue-eating isopod and trout
45
A personal preference or a point of view is
a hypothesis
an inference
a theory
a bias
46
The energy needed to get a reaction started is the
cohesion energy.
activation energy.
adhesion energy.
chemical energy.
47
Estuaries are commercially important because
lumber trees grow in estuaries.
fish species that people buy and sell live in estuaries.
tall buildings can be built in estuaries.
48
Looking at a cell under a microscope, you note that it is a prokaryote. How do you know?
The cell lacks genetic material.
The cell lacks a cell membrane
The cell lacks cytoplasm
The cell lacks a nucleus
49
What is the function of a nucleus?
Stores material
Supports
Protects
Contains nearly all the cell's DNA
50
Factor that is manipulated or changed by the experimenter.
Independent Variable
Dependent Variable
Controlled Variable
51
Identify the
REACTANTS
in the chemical equation below:
C6H12O6
CO2 and H2O
CO2
C6H12O6 and 6O2
52
In a salt water solution, salt is the ___________
Solute
Solvent
53
Define solution
compound that produce hydroxide ions when dissolved in water
a amount of solute dissolved in a certain amount of solvent
a substance that changes color in the presence of a base
Mix that forms when one substance evenly dissolve in another
54
In the egg lab, the hypotonic solution was:
corn syrup
water
55
When using the microscope, it is important to focus first on ________ power
oil immersion
low
100X power
high
56
What are isotopes
Two atoms with different number of electrons
Two atoms with different number of neutrons
Two atoms with different number of protons
Two different types of atoms
57
During a controlled experiment, a scientist isolates and tests
a control group.
a single variable.
a conclusion.
a mass of information.
58
What is the part of the microscope that controls how much light enters the microscope?
diaphragm
coarse adjustment knob
revolving nosepiece
fine adjustment knob
59
Animals that get energy by eating the carcasses of other animals
detritivores.
heterotrophs.
scavengers.
omnivores.
60
What is a heterotroph?
An organism that makes its own food by photosynthesis.
An organism that eats only plants.
An organism that makes its own food by chemosynthesis
An organism that gets its food by eating other organisms
61
What makes water polar?
there are hydrogen bonds between adjacent water molecules
It contains oxygen
hydrogen and oxygen are linked with covalent bonds
electrons in the covalent bonds are not shared equally
62
What is the basic structural unit of DNA?
Nucleotide
Deoxyribose nucleic acid
Amino Acids
Nitrogenous Base
63
What are found in the space surrounding the nucleus of an atom?
neutrons
ions
electrons
protons
64
all of the life on Earth exists in
biosphere
niche
ecosystem
habitat
65
What is at the base of all ecological pyramids?
producers
decomposers
consumers
scavengers
66
Which of the following descriptions about the organization of an ecosystem?
Communities make up species, which make up populations.
Species make up communities, which make up populations.
Populations make up species, which make up communities.
Species make up populations, which make up communities.
67
Identify organelle 3
mitochondria
ER
cell membrane
Golgi body
68
Which of these are decomposers?
bacteria
mushroom
worm
pig
69
What is the difference between primary and secondary succession?
Secondary only happens in forests, primary on islands.
Primary comes first and then secondary.
Primary is more common than secondary.
Primary starts on bare rock, secondary has soil.
70
What is the term for each step in the transfer of energy and matter within a food web?
food chain
food pyramid
trophic level
energy path
71
Enzymes affect the reactions in living cells by lowering the
temperature of the reaction.
speed of the reaction.
activation energy of the reaction.
active site energy of the reaction.
72
If a substance has a pH of 6 what is it
acid
a substance
I don't now
base
73
What is the function of the cell membrane?
store energy
None of these
produces energy
controls what enters and exits the cell
74
What kind of particle transport requires energy?
Osmosis
active transport
disrupts homeostasis
facilitated diffusion
75
Identify organelle 10
nucleus
mitochondria
Golgi body
mitochondria
76
Science is described as:
A collection of beliefs
A set of unchanging facts
A way of knowing
a list of rules
77
A complex model showing feeding interactions among organisms is a
Ecosystem
Food Chain
Food Web
Biome
78
Which organelle contains substances that digest worn out organelles and food
Ribosomes
Nucleus
Chloroplast
Lysosomes
79
In what ways are herbivores and carnivores alike?
both use photosynthesis
both consume other organisms
both consume producers
both are autotrophs
80
Which element do almost all organic biological molecules contain?
water
sodium
nitrogen
carbon
81
Which organelles are found in plant cells, but not in animal cells?
Cell wall and Nuclear Membrane
Vacuole and Mitochondria
Chloroplast and Cell Wall
Centrioles and Mitochondria
