Biology A Unit 1: Lessons 1-5 Fall 2023 Questions and Answers Complete
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Course
Biology A
Institution
Biology A
Biology A Unit 1: Lessons 1-5 Fall 2023 Questions and Answers Complete
Lesson 1:
Lesson 1:
Which of the following statements describes a proton of an atom?
has a positive charge and is located in the nucleus
Study the model.
This model shows an atom with two neutrons, one proton, and o...
Biology A Unit 1: Lessons 1-5 Fall 2023 Questions and
Answers Complete
Lesson 1:
Lesson 1:
Which of the following statements describes a proton of an atom?
has a positive charge and is located in the nucleus
Study the model.
This model shows an atom with two neutrons, one proton, and one electron.
Which option shows the correct electrical charges?
2 blank red circles
1 yellow circle with P+
1 blue circle with E-
How is a carbon atom represented?
Circle with a "C" on it
This element is an essential atom in the structure of proteins. Without this
element, the body would be unable to make the proteins it needs to function
properly.
What element is this?
nitrogen
What element has the symbol N?
nitrogen
What is an atom?
the smallest unit of matter that has the chemical properties of an element
What is a neutron?
a neutral particle that is in the nucleus of an atom
Which describes electrons?
Electrons move at very fast speeds around the nucleus of an atom.
Study the image
What is the correct labeling for the atom?
A—nucleus, B—proton, C—neutron D—electron
This element can form a wide variety of substances, including long chains. The
different substances it forms are central to the molecules found in living things.
What element is this?
carbon
Lesson 2:
Lesson 2:
The chemical formula for calcium carbonate is CaCO3.
How many different elements does a molecule of calcium carbonate have?
three
Water molecules have two atoms attached to a third central atom, forming an
angle.
Which ball-and-stick model correctly shows this molecule?
Red middle ball with 2 smaller white balls attached to both sides
Which statements are true about ions?
Select all that apply.
Anions have more electrons than protons, giving them a negative charge.
Cations have more protons than electrons, giving them a positive charge.
The attraction between atoms with opposite electrical charges forms what type of
bond?
ionic bond
Which of the following are atomic ions?
Select all that apply.
Cl-
O2-
Ca2+
Which statement best describes a compound formed by an ionic bond?
neutral
Which of the following are simple molecular ions?
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