TTU K-12 Biology Semester 1 Review
Exam Questions & Answers (Grade
A+)
What is the first step a scientist takes in forming a hypothesis? -
correct answer ✅making plenty of observations
The table below shows the results of an investigation: These results
have led to new questions. Which question based on these results
is outside the field of science? -
correct answer ✅What color pot looks the best on the plant?
A student drew the chart below to organize her notes on the
characteristics of hypotheses and theories: Which phrase belongs in
the area where the two circles overlap? -
correct answer ✅Based on observations and investigations
,TTU K-12 Biology Semester 1 Review
Exam Questions & Answers (Grade
A+)
Dairy foods contain a sugar called lactose that is broken down in
the digestive system. Some people get an upset stomach when they
eat diary foods, such as milk and ice cream. These people lack an
enzyme called lactase that is involved in the digestion of lactose.
Lactase supplements have been developed that make it possible for
these people to eat dairy foods.
Regarding the action of the lactase supplement, you can infer that it
-
correct answer ✅It lowers the activation energy for the reaction
that breaks down lactose.
The diagram below shows a structural formula of a biomolecule:
What is the most likely function of this biomolecule? -
correct answer ✅Storing Energy
, TTU K-12 Biology Semester 1 Review
Exam Questions & Answers (Grade
A+)
The food web below shows organisms in a mountain ecosystem.
The deer, rabbit, grasshopper, and caterpillar are classified as the
primary, or first-level, consumers in this ecosystem. What evidence
from the food web supports this statement? -
correct answer ✅They feed on the producers.
A scientist studies climate change and its possible effects on rain
forest species. She collects data to determine the relationship
between rainfall and plant productivity, and creates the graph
below. Using these data, what would be a reasonable prediction
Exam Questions & Answers (Grade
A+)
What is the first step a scientist takes in forming a hypothesis? -
correct answer ✅making plenty of observations
The table below shows the results of an investigation: These results
have led to new questions. Which question based on these results
is outside the field of science? -
correct answer ✅What color pot looks the best on the plant?
A student drew the chart below to organize her notes on the
characteristics of hypotheses and theories: Which phrase belongs in
the area where the two circles overlap? -
correct answer ✅Based on observations and investigations
,TTU K-12 Biology Semester 1 Review
Exam Questions & Answers (Grade
A+)
Dairy foods contain a sugar called lactose that is broken down in
the digestive system. Some people get an upset stomach when they
eat diary foods, such as milk and ice cream. These people lack an
enzyme called lactase that is involved in the digestion of lactose.
Lactase supplements have been developed that make it possible for
these people to eat dairy foods.
Regarding the action of the lactase supplement, you can infer that it
-
correct answer ✅It lowers the activation energy for the reaction
that breaks down lactose.
The diagram below shows a structural formula of a biomolecule:
What is the most likely function of this biomolecule? -
correct answer ✅Storing Energy
, TTU K-12 Biology Semester 1 Review
Exam Questions & Answers (Grade
A+)
The food web below shows organisms in a mountain ecosystem.
The deer, rabbit, grasshopper, and caterpillar are classified as the
primary, or first-level, consumers in this ecosystem. What evidence
from the food web supports this statement? -
correct answer ✅They feed on the producers.
A scientist studies climate change and its possible effects on rain
forest species. She collects data to determine the relationship
between rainfall and plant productivity, and creates the graph
below. Using these data, what would be a reasonable prediction
