What is the function of lysosomes?

Break down waste and cellular debris

What are the three types of chemical bonds?

Ionic, covalent, and hydrogen bonds

What is cohesion in water molecules?

Water molecules sticking to each other

What are radioactive isotopes used for?

Scientific research and medicine

What is a scientific theory?

A hypothesis that has been thoroughly tested

Why is carbon essential for biological molecules?

four electrons in its outer shell and can bond with upto 4 different atoms

What are nucleotides made of?

A sugar, phosphate group, and nitrogenous base

The ability of an organism to maintain its internal environment

What makes isotopes of an element different?

They have different numbers of neutrons

What is the difference between polar and nonpolar covalent bonds?

Nonpolar bonds share electrons equally, while polar bonds do not

What is an adaptation?A mutation that causes disease

A trait that helps an organism survive and reproduce

What happens to water when it freezes?

It becomes less dense and floats

Amolecule that maintains aconstant pH byaccepting or releasinghydrogen ions

What are the three subatomic particles of an atom?

Protons, neutrons, and electrons

What distinguishes prokaryotic cells from eukaryotic cells?

Prokaryotic cells do not have a nucleus

What is the function of the nucleus?

Controls cell activities and contains DNA

A chemical reaction that breaks down molecules by adding water

What is natural selection?

process where organisms reproduce more successfully

What is an ionic bond?A bond where electrons are shared

A bond where atoms gain or lose electrons to become stable

Why must scientific experiments be repeatable?

To verify results and ensure accuracy

What are the six steps of the scientific method?

Observation, question, hypothesis, prediction, experiment, conclusion

studbud

Biol 1001 Adam Hrincevich Exam 1

70 termsStudBud Administration6 plays

Imported from external platform

Flashcards70 cardsFPractice quizPHost liveL

Questions 70

Answers

1
What is the function of lysosomes?
Break down waste and cellular debris
Capture sunlight for photosynthesis
Produce proteins
Store genetic information
2
What part of a phospholipid is hydrophobic?
The fatty acid tails
The glycerol molecule
The entire molecule
The phosphate group
3
What are the three types of chemical bonds?
Covalent, hydrogen, and water bonds
Covalent, atomic, and ionic bonds
Magnetic, hydrogen, and ionic bonds
Ionic, covalent, and hydrogen bonds
4
What type of lipid is cholesterol?
A phospholipid
A steroid
A carbohydrate
A protein
5
What is the binomial system of naming organisms based on?
Order and family
Kingdom and phylum
Genus and species
DNA sequence
6
What structure helps animal cells move?
cell wall
cilia and flagella
nucleus
vacuole
7
What is cohesion in water molecules?
Water molecules sticking to other substances
Water evaporating quickly
Water freezing at low temperatures
Water molecules sticking to each other
8
What is the function of cellulose?
Energy storage in plants
Structural support in plants
Forming insect exoskeletons
Energy storage in animals
9
What are radioactive isotopes used for?
Making elements more stableScientific research and medicine
Scientific research and medicine
Creating energy in atoms
Reducing atomic mass
10
What is the hereditary molecule that carries genetic instructions?
Protien
RNA
DNA
ATP
11
Who first observed and named "cells"?
Louis Pasteur
Theodor Schwann
Robert Hooke
Anton van Leeuwenhoek
12
What is a scientific theory?
A prediction that has been proven
A guess with no evidence
A hypothesis that has been thoroughly tested
A random idea that scientists believe
13
What type of carbohydrate is used for energy storage in animals?
starch
cellulose
chitin
glycogen
14
Why is carbon essential for biological molecules?
It does not form bonds
It forms ionic bonds with other elements
four electrons in its outer shell and can bond with upto 4 different atoms
It can only bond with one other atom
15
What are nucleotides made of?
A carbohydrate, water molecule, and oxygen
A lipid, amino acid, and protein
A sugar, phosphate group, and nitrogenous base
A peptide, glucose, and base
16
What type of microscope provides the highest resolution?
electron microscope
fluorescent microscope
magnifying glass
light microscope
17
What is the process by which modern organisms have descended from earlier forms of life?
Homeostasis
Mutation
Evolution
Reproduction
18
What happens when an atom’s outer shell is full?
It becomes unstable
It becomes reactive
It does not react and is inert
It gains a positive charge
19
What is homeostasis?
The exchange of energy between organisms
The ability of an organism to maintain its internal environment
The process of breaking down food
The process of making offspring
20
What makes isotopes of an element different?
They have different numbers of electrons
They have different chemical properties
They have different numbers of neutrons
They have different numbers of protons
21
What is the basic unit of life?
molecule
tissue
cell
organ
22
What is the site of photosynthesis in plant cells?
golgi apparatus
nucleus
mitochondria
chloroplast
23
Where are protons and neutrons located in an atom?
In the electron cloud
In the atomic nucleus
In the outer shell
In the molecular bond
24
What structure do prokaryotic cells use for movement?
vesicles
pili
flagella
cillia
25
What are lipids primarily made of?
Glucose and peptides
Nitrogen and phosphorus
Carbon, hydrogen, and oxygen
Amino acids and carbon
26
What is the difference between polar and nonpolar covalent bonds?
Nonpolar bonds share electrons equally, while polar bonds do not
Nonpolar bonds do not involve electrons
Polar bonds are weaker than nonpolar bonds
Polar bonds share electrons equally, while nonpolar bonds do not
27
What is an adaptation?A mutation that causes disease
A mutation that causes disease
A process that causes extinction
A trait that helps an organism survive and reproduce
A random genetic change
28
What happens to water when it freezes?
It becomes less dense and floats
It dissolves into smaller particles
It loses all its hydrogen bonds
It becomes denser
29
What is a buffer?
A substance that prevents water from freezing
Amolecule that maintains aconstant pH byaccepting or releasinghydrogen ions
A molecule that speeds up reactions
A molecule that increases acidity
30
What structure regulates the flow of materials into and out of the cell?
plasma membrance
ribosome
mitochondria
nucleus
31
What are the three subatomic particles of an atom?
Electrons, ions, and neutrons
ons, atoms, and elements
Protons, neutrons, and electrons
Protons, neutrons, and molecules
32
What distinguishes prokaryotic cells from eukaryotic cells?
Prokaryotic cells have a nucleus
Eukaryotic cells are smaller than prokaryotic cells
Prokaryotic cells do not have a nucleus
Eukaryotic cells lack DNA
33
What is the function of ribosomes?
make protiens
digest food
control the cell
store energy
34
What is the smallest unit of an element?
Electron
Proton
Molecule
Atom
35
What part of the cell provides structural support and shape?
cytoskeleton
plasma membrane
nucleus
ribosomes
36
What is the function of the nucleus?
Produces energy
Produces proteins
Controls cell activities and contains DNA
Breaks down toxins
37
Which nucleotide carries energy in the cell?
DNA
cAMP
RNA
ATP
38
What type of bond joins amino acids to
peptide bond
ionic bond
hydrogen bond
glycosidic bond
39
What elements make up carbohydrates?
Carbon, hydrogen, and nitrogen
Oxygen, phosphorus, and sulfur
Carbon, nitrogen, and potassium
Carbon, hydrogen, and oxygen
40
What is an example of a disaccharide?
starch
lactose
fructose
glucose
41
What is the pH of pure water?
7
5
0
10
42
Which domain includes organisms with complex cells?
Prokarya
Eukarya
Bacteria
Archaea
43
What is hydrolysis?
A chemical reaction that builds polymers
A process that removes energy from proteins
A reaction that forms carbon backbones
A chemical reaction that breaks down molecules by adding water
44
What is natural selection?
A random event that changes DNA
The ability of an organism to maintain its body temperature
process where organisms reproduce more successfully
The disappearance of a species
45
What organelle is known as the "powerhouse of the cell"?
golgi apparatus
mucleus
mitochondria
ribosome
46
What is an ionic bond?A bond where electrons are shared
A bond between water molecules
A bond where electrons are shared
A bond where atoms gain or lose electrons to become stable
A bond that makes molecules nonpolar
47
Why must scientific experiments be repeatable?
To prove the scientist is correct
To get the same results every time
To make them more complicated
To verify results and ensure accuracy
48
What can cause a protein to become denatured?
Addition of nucleotides
Changes in temperature or pH
Loss of amino acids
Excess glucose
49
What do prokaryotic cells lack?
a nucleus
cytoplasm
a plasma membrane
DNA
50
What is responsible for interactions among atoms?
Protons
Neutrons
Electrons
ions
51
What are the six steps of the scientific method?
Observation, question, hypothesis, prediction, experiment, conclusion
Law, hypothesis, prediction, data, theory, proof
Hypothesis, theory, experiment, proof, data, and fact
Observation, guess, test, proof, theory, publish
52
What organelle is unique to plant cells?
lysosome
chloroplast
centriole
mitochondria
53
What is biology
The study of science
The study of animals
The study of life
The study of plants
54
How do covalent bonds form?
By repelling protons
By sharing electrons
By transferring electrons
By losing neutrons
55
What is surface tension?
The expansion of water when frozen
The heating of water
The ability of water to dissolve substances
The resistance of water’s surface to being broken
56
What is the primary structure of a protein?
The interaction between protein subunits
The three-dimensional shape of the protein
The folding of the polypeptide chain
The sequence of amino acids
57
Which process do some organisms use to produce food?
Homeostasis
Respiration
Photosynthesis
Fermentation
58
What is a free radical?
An unstable molecule with an unfilled outer electron shell
A type of isotope
A stable molecule
A non-reactive element
59
What is capillary action?
ability of water to move through small spaces due to cohesion and adhesion
Water freezing into ice
The expansion of water when it is heated
Water's reaction with acids
60
What organelle packages and distributes proteins?
lysosome
ribosome
endoplasmic reticulum
golgi apparatus
61
What is the main function of fats and oils?
Genetic coding
Structural support
Energy storage
Catalyzing reactions
62
What type of lipid is a major component of cell membranes?
waxes
phospholipids
steroids
fatty acids
63
What is responsible for the unique properties of water?
Hydrogen bonds
Ionic bonds
Free radicals
Covalent bonds
64
What is the smallest particle of an element?
Cell
Molecule
Tissue
Atom
65
How is an element defined?
By the number of neutrons
By its weight
By its atomic number (number of protons)
By the number of electrons
66
What kind of substances dissolve easily in water?
All molecules
Hydrophilic molecules
Nonpolar molecules
Hydrophobic molecules
67
How are biological polymers formed?
By removing water from monomers
By breaking bonds between monomers
By heating the molecules
By adding water to monomers
68
What is the function of DNA?
Carrying energy in the cell
Acting as a protein enzyme
Forming cell membranes
Storing genetic information
69
Which of the following is a monosaccharide?
glucose
cellulose
sucrose
maltose
70
What are monosaccharides?
A type of protein
Polymers of starch
Simple sugar molecules
Complex sugars

Biol 1001 Adam Hrincevich Exam 1 Flashcards | StudBud