When writing a chemical equation, on which sides are the reactants and products written?

Reactants are on the left side, and products are on the right side.

What is a hydrogen bond?

a weak attraction between a hydrogen atom and an electronegative atom.

What are basic differences between eukaryotic and prokaryotic cells?

Eukaryotic cells have a nucleus and membrane-bound organelles,

What is the correct sequence for levels of biological organization? Define each.

Cell, tissue, organ, organ system, organism.

What are the characteristics of an animal cell membrane?

Animal cell membranes are flexible and contain cholesterol.

What are the 4 major groups of organic compounds? Understand the basic differences between each.

Carbohydrates, lipids, proteins, nucleic acids.

What is the primary component of cell membranes?

Phospholipids are the primary component of cell membranes.

What is the difference between saturated and unsaturated fats? How is hydrogenation related to this?

Saturated fats have no double bonds hydrogenation converts unsaturated fats

what are characteristics found in all living organisms but not necessarily in nonliving things)?

All living things must include at least one cell.

On a pH scale, which numbers represent acids, neutral, and basic pHs?

Acids are below 7, neutral is 7, and bases are above 7.

Why are cells the “fundamental unit of life”?

Cells are the basic building blocks of all living organisms.

What is homeostasis? Recognize examples of homeostasis.

Homeostasis is the maintenance of stable internal conditions.

What is a covalent bond?

A covalent bond is a chemical bond formed by the sharing of electrons.

What is an inert atom? How is this related to the electrons in their outermost (valence) shell?

An inert atom has a full outermost shell of electrons.

What is the function of the nucleolus?

The nucleolus is responsible for producing ribosomes.

Define: atom, atomic number, ion, isotope, element, molecule,

A molecule is a group of atoms bonded together., An atom is the basic unit of matter., An isotope is a variant of an element with a different number of neutrons., An ion is a charged atom.

What are the basic 3 parts of an amino acid?

Amino group, carboxyl group, and side chain (R group).

What is a polar covalent bond vs. nonpolar covalent bond?

A polar covalent bond has unequal sharing of electrons

Which organelles differ between plant and animal cells?

Chloroplasts and cell walls are found in plant cells

Define: producers, consumers, heterotrophs, autotrophs, decomposers

Heterotrophs are organisms that cannot produce their own food., Producers are organisms that produce their own food., Consumers are organisms that eat other organisms.

What are the 4 nitrogen bases in DNA? How is RNA different?

Adenine, thymine, cytosine, guanine; RNA has uracil instead of thymine.

What are the building blocks (monomers) of proteins? Of carbohydrates? Of nucleic acids?

Amino acids, building blocks of proteins monosaccharides for carbohydrates

How do sexual and asexual reproduction differ?

Sexual reproduction involves two parents, while asexual involves one.

When describing water, what does the term “cohesion” mean?

Cohesion refers to the attraction between molecules of the same substance.

What 4 elements are the main elements in organic molecules?

Carbon, hydrogen, oxygen, nitrogen.

What is an ionic bond? For example, this is the type of bond found in sodium chloride (NaCl).

An ionic bond is formed by the transfer of electrons between atoms.

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Biology Basics Quiz. part 1

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Test your knowledge on fundamental concepts in biology, from levels of biological organization to cell structure and chemical bonds.

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Questions 28

Answers

1
When writing a chemical equation, on which sides are the reactants and products written?
Reactants are written above the products.
Reactants are on the left side, and products are on the right side.
Reactants are on the right side, and products are on the left side.
Reactants and products are written in any order.
2
What is a hydrogen bond?
a weak attraction between a hydrogen atom and an electronegative atom.
A hydrogen bond is a bond that occurs only in water.
A hydrogen bond is a strong bond between two hydrogen atoms.
A hydrogen bond is a type of covalent bond.
3
What are basic differences between eukaryotic and prokaryotic cells?
Prokaryotic cells are more complex than eukaryotic cells.
Eukaryotic cells are smaller than prokaryotic cells.
Prokaryotic cells have a nucleus, while eukaryotic cells do not.
Eukaryotic cells have a nucleus and membrane-bound organelles,
4
What are the three domains in the Woese system of classification?
Archaea, Eukarya, Protista.
Eukarya, Animalia, Plantae.
Bacteria, Archaea, Eukarya.
Bacteria, Fungi, Plantae.
5
What is the correct sequence for levels of biological organization? Define each.
Atom, molecule, cell, tissue, organ.
Molecule, organ, organism, ecosystem.
Cell, tissue, organ, organ system, organism.
Organism, population, community, ecosystem.
6
What are the characteristics of an animal cell membrane?
Animal cell membranes are flexible and contain cholesterol.
Animal cell membranes are only found in multicellular organisms.
Animal cell membranes lack proteins.
Animal cell membranes are rigid and impermeable.
7
What are the 4 major groups of organic compounds? Understand the basic differences between each.
Lipids, proteins, enzymes, carbohydrates.
Carbohydrates, lipids, proteins, nucleic acids.
Carbohydrates, minerals, vitamins, proteins.
Nucleic acids, proteins, carbohydrates, salts.
8
What is the primary component of cell membranes?
Nucleic acids are the primary component of cell membranes.
Proteins are the primary component of cell membranes.
Phospholipids are the primary component of cell membranes.
Carbohydrates are the primary component of cell membranes.
9
What is the difference between saturated and unsaturated fats? How is hydrogenation related to this?
Hydrogenation is a process that makes fats more unsaturated.
Saturated fats are liquid at room temperature,
Saturated fats have no double bonds hydrogenation converts unsaturated fats
Saturated fats are healthier than unsaturated fats.
10
For most atoms, how many electrons does the outermost (valence) electron shell hold?
2 electrons.
6 electrons.
8 electrons.
4 electrons.
11
what are characteristics found in all living organisms but not necessarily in nonliving things)?
Living things can be seen with the naked eye.
All living things can move independently.
All living things must include at least one cell.
Living things do not reproduce.
12
On a pH scale, which numbers represent acids, neutral, and basic pHs?
pH values do not indicate acidity or basicity.
Acids are below 7, neutral is 7, and bases are above 7.
All pH values are neutral.
Acids are above 7, neutral is 7, and bases are below 7.
13
Why are cells the “fundamental unit of life”?
Cells are only found in multicellular organisms.
Cells are the largest units in living organisms.
Cells are the basic building blocks of all living organisms.
Cells can exist independently of other cells.
14
What is homeostasis? Recognize examples of homeostasis.
Homeostasis is the process of growth in organisms.
Homeostasis is the response to external stimuli.
Homeostasis is the maintenance of stable internal conditions.
Homeostasis refers to the ability to reproduce.
15
What is a covalent bond?
A covalent bond is a weak attraction between molecules.
A covalent bond is a bond formed by the transfer of electrons.
A covalent bond is a chemical bond formed by the sharing of electrons.
A covalent bond is a bond that occurs only in metals.
16
What is an inert atom? How is this related to the electrons in their outermost (valence) shell?
An inert atom has no electrons in its outermost shell.
An inert atom is highly reactive.
An inert atom has a full outermost shell of electrons.
An inert atom can easily form bonds with other atoms.
17
What is the function of the nucleolus?
The nucleolus is responsible for protein synthesis.
The nucleolus is responsible for energy production.
The nucleolus is responsible for producing ribosomes.
The nucleolus is responsible for DNA replication.
18
Define: atom, atomic number, ion, isotope, element, molecule,
A molecule is a group of atoms bonded together.
An atom is the basic unit of matter.
An isotope is a variant of an element with a different number of neutrons.
An ion is a charged atom.
19
What are the basic 3 parts of an amino acid?
Carboxyl group, phosphate group, and side chain.
Amino group, carbonyl group, and nitrogen base.
Amino group, carboxyl group, and side chain (R group).
Amino group, hydroxyl group, and carbon chain.
20
What is a polar covalent bond vs. nonpolar covalent bond?
Nonpolar covalent bonds are found in ionic compounds.
A polar covalent bond has unequal sharing of electrons
Polar covalent bonds are stronger than nonpolar covalent bonds.
Water molecules have nonpolar covalent bonds.
21
Which organelles differ between plant and animal cells?
Ribosomes are found in animal cells but not in plant cells.
Mitochondria are found in plant cells but not in animal cells.
Nuclei are found in animal cells but not in plant cells.
Chloroplasts and cell walls are found in plant cells
22
Define: producers, consumers, heterotrophs, autotrophs, decomposers
Autotrophs are organisms that rely on others for food.
Heterotrophs are organisms that cannot produce their own food.
Producers are organisms that produce their own food.
Consumers are organisms that eat other organisms.
23
What are the 4 nitrogen bases in DNA? How is RNA different?
Adenine, thymine, cytosine, guanine; RNA has no nitrogen bases.
Adenine, thymine, cytosine, guanine; RNA has uracil instead of thymine.
Adenine, uracil, cytosine, guanine; DNA has thymine instead of uracil.
Adenine, thymine, cytosine, uracil; RNA has no thymine.
24
What are the building blocks (monomers) of proteins? Of carbohydrates? Of nucleic acids?
Fatty acids are the building blocks of proteins;
Amino acids, building blocks of proteins monosaccharides for carbohydrates
Nucleotides are the building blocks of proteins;
Monosaccharides are the building blocks of
25
How do sexual and asexual reproduction differ?
Sexual reproduction involves two parents, while asexual involves one.
Asexual reproduction requires fertilization.
Sexual reproduction produces identical offspring.
Asexual reproduction is faster than sexual reproduction.
26
When describing water, what does the term “cohesion” mean?
Cohesion is the process of water evaporating.
Cohesion refers to the attraction between different substances.
Cohesion is the ability of water to dissolve other substances.
Cohesion refers to the attraction between molecules of the same substance.
27
What 4 elements are the main elements in organic molecules?
Carbon, hydrogen, oxygen, nitrogen.
Carbon, sulfur, phosphorus, potassium.
Iron, copper, zinc, magnesium.
Oxygen, hydrogen, calcium, sodium.
28
What is an ionic bond? For example, this is the type of bond found in sodium chloride (NaCl).
An ionic bond occurs only in gases.
An ionic bond is formed by the transfer of electrons between atoms.
An ionic bond is formed by the sharing of electrons.
An ionic bond is a weak bond between molecules.

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