unit 1
What is the correct way to format a hypothesis?
If, Then, Because.
The nucleus contains _[blank 1]_, and it has a _[blank 2]_ with holes that allow some molecules to pass through.
blank 1: DNA
blank 2: double membrane.
Which option describes how genes control the traits of a cell?
The phylogenetic tree shows A's on the branches and B's between the branches on the backbone of the trees. What do the A's and B's generally represent?
A – species
B – traits
Some baby birds peck at a red dot under their parent’s beak. This triggers a gagging reflex in the parent.
Which option describes how this behavior increases fitness?
The parent regurgitates the partly digested food for the baby bird. The baby bird can eat this food.
I. Brian watches sunspots using a telescope.
II. Emma does research to determine if the mass of the moon affects its distance from Earth.
III. Miyako researches the effects of distant stars on bird behavior.
Which of the activities contains an example of science?
II and III
What is a tool that organizes the different types of atoms?
periodic table
Which option explains why genes are sections of chromosomes, but chromosomes are not made up of genes?
There are sections of chromosomes that are not genes.
What trait would a fossil on branch A possess based on this phylogenetic tree?
The fossil would have four flippers.
_[Blank 1]_ are known at birth. _[blank 2]_ are learned later in life.
Blank 1: Innate behaviors
blank 2: Learned behaviors
Which actions may be taken during a close reading of text?
(Select all that apply.)
taking notes
reading carefully
editing the text
scanning key terms
taking notes
reading carefully
Which situation would be most effectively shown by a mathematical model?
the relationship between distance and time for a train moving at a certain speed
If Sally has earlobes that are attached to the side of her head. Sally has two _[blank 1]_ that cause her to have attached earlobes. Sally has obtained these from her _[blank 2]_
blank 1: alleles
blank 2: parents
Which options describe incidents that may cause mutations?
errors made during the cell cycle
being exposed to radiation
In temperate regions, a lot of animals are active in daylight and inactive at night. This is _[blank 1]_ because daytime temperatures are warm, and animals can rely on their _[blank 2]_ to find food.
blank 1: a survival advantage
blank 2: sight