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ATI TEAS 7 SCIENCE TESTBANK WITH ANSWERS
A botanist wants to determine if environmental temperature affects root growth. In her
experiment, she creates 4 rooms at temperatures that vary by 5 degrees F. Each room
gets 20seedlings of the same species, which she grows on agar plates for 60 days.
Once a day, she measures the length of each seedling's root. At the end of 60 days,
she compares the length of the roots with the room temperature. She finds the the room
with the lowest temperature produced the longest roots.

Which of the following is best identified as a hypothesis?

The environmental temperature can affect the growth of a plant's root
Plants need light to grow
A colder environment produces longer roots
Plants need 60 days in order to grow their roots - ANSThe environmental temperature
can affect the growth of a plant's root

A botanist would like measure the root length of various seedlings. Which tool would be
best?

A ruler with precision to the half inch
A microscope and a ruler
A microscope with magnification to the 10th power
A microscope and a ruler with precision to the millimeter - ANSA microscope and a ruler
with precision to the millimeter

A researcher is conducting an experiment on root growth and light exposure. The
researcher suspects that, since plants go underground, roots will grow better if they
have less exposure to light. The researcher divides seeds into 4 groups. Group 1 has
20 seeds and is planted in dirt. Group 2 has 20 seeds and is placed in an agar dish
exposed to light 2 hours a day. Group 3 has 5 seeds and is placed in an agar dish
exposed to light 4 hours a day. Group 4 has 5 seeds is placed in an agar dish exposed
to light 20 hours a day.

What problem has the researcher created in this experimental design?

The researcher does not have a control group.
The researcher has not kept the sample size equal across all groups.
The researcher has designed an experiment that does not test her hypothesis.
The researcher cannot replicate this experiment - ANSThe researcher has not kept the
sample size equal across all groups

A student has been assigned an experiment into the life cycle of a frog. First, she needs
to count the daily number of tadpoles at her assigned pond. Which of the following
would give her the most accurate and reliable data?

Going to the pond in every morning, collecting a 1 L sample of water, and counting the
tadpoles

, ATI TEAS 7 SCIENCE TESTBANK WITH ANSWERS

Going to the pond every morning at 10 a.m., collecting a 1 L sample of water, and
counting the tadpoles

Going to the pond every morning at 10 a.m., collecting a 1 L sample of water at 3 set
locations at the pond, and counting the tadpoles

Going to the pond once a week at 10 a.m., collecting a 1 L sample of water at 3 set
locations at the pond, and counting the tadpoles - ANSGoing to the pond every morning
at 10 a.m., collecting a 1 L sample of water at 3 set locations at the pond, and counting
the tadpoles

Amino acids are the structural basis of proteins. What makes amino acids?

Amine group
Carboxyl group
Glycerol
Sugar residue - ANSAmine group
Carboxyl group

At which step in the scientific method might a scientist create a model?
Hypothesis
Data analysis
Experimentation
Conclusion - ANSConclusion

Dysentery is an infectious disease caused by what type of microbe ?
Helminth
Bacteria
Protozoan
Fungus - ANSProtozoan

How many pairs of chromosomes are in a human cell?
46
23
64
32 - ANS46

How many protons does a negatively charged isotope of Nitrogen-12 have?
(there was an image, could not insert)
5
7
12
14 - ANS7

If the flow of bile into the duodenum were blocked, the digestion of which of

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