AnswersFL-2000310-Biology 1 AUnit Test

Unit Test — Cumulative exam Answers

0 verified answers1 views
1
Free Preview

Which best explains why a scientific idea would lack scientific consensus?

A
It is already a law.
B
It is a new idea.
C
It is not accepted by the public.
D
It is not published in an encyclopedia.
2
Free Preview

What is the end result of the eukaryotic cell cycle?

A
no parent cells and two daughter cells
B
one parent cell and two daughter cells
C
two parent cells and one daughter cell
D
one parent cell and one daughter cell
3

Which structure will form when a primitive cell engulfs an aerobic bacterium?

A
mitochondria
B
chloroplast
C
nucleus
D
cell membrane
4

Which most accurately describes the basis of the scientific method?

A
a path of clearly defined steps that must be followed in a particular order
B
a possible answer to a scientific question based on knowledge or research
C
the recipe for how to conduct an experiment that must be followed precisely
D
the process of hypothesis and testing through which scientific inquiry occurs
5

A new multicellular organism has been discovered, and scientists want to study the organism’s cell structures, including organelles. Which microscope should they use?

A
scanning electron microscope
B
transmission electron microscope
C
compound light microscope
D
simple microscope
6

Which statement best summarizes the importance of meiosis to reproduction?

A
It produces diploid cells that are needed for sexual reproduction.
B
It produces diploid cells that are needed for asexual reproduction.
C
It produces gametes that are needed for sexual reproduction.
D
It produces gametes that are needed for asexual reproduction.
7

Which statement best describes the overall change that occurs as a result of mitosis?

A
One cell becomes two cells that have identical copies of DNA.
B
One cell becomes two cells that have different copies of DNA.
C
Two cells become two cells that have identical copies of DNA.
D
Two cells become two cells that have different copies of DNA.
8

Rachel is performing an acid-base titration. She hopes to determine the concentration of an unknown acid solution to two decimal places. Which is the best tool to find the volume of the base that she needs to neutralize the acid?

A
beaker
B
Erlenmeyer flask
C
graduated cylinder
D
buret
9

A cell begins to send out incorrect chemical signals to neighboring cells. During which phase of the cell cycle did the cause of the change most likely happen?

A
G1 phase
B
G2 phase
C
M phase
D
S phase
10

A scientist asked a question that was based on an observation. What should the scientist do next?

A
The scientist should form a hypothesis and design an experiment.
B
The scientist should collect data and organize it into tables.
C
The scientist should draw conclusions based on the observation.
D
The scientist should record and communicate his hypothesis and results.
11

Which two microscopes generate three-dimensional images?

A
scanning electron microscope and scanning tunneling microscope
B
transmission electron microscope and scanning electron microscope
C
scanning tunneling microscope and transmission electron microscope
D
compound light microscope and scanning electron microscope
12

After observing a moth that is camouflaged against dark-colored bark, a scientist asks a question. The scientist discovers that the question has already been asked and answered by several investigations. What should the scientist do?

A
The scientist should test the question anyway.
B
The scientist should broaden the scope of the question.
C
The scientist should come up with a new way to test the question.
D
The scientist should revise the question to address a gap in knowledge.
13

Two scientists write a paper detailing their research and conclusions and submit it to a scientific journal. Several months later, the publisher sends them back the paper. Many comments from several fellow scientists are attached. Which step will the authors of the paper most likely take next?

A
They will change their research to a different topic and start all over again.
B
They will alter the data to match the results that their peers were expecting.
C
They will incorporate the suggestions from their peers and resubmit the paper.
D
They will sue the journal for delaying their research and not printing the paper.
14

Which type of information is best represented by a chart?

A
the sequence of chemical reactions in photosynthesis
B
the percentage composition of gases in car exhaust
C
the rate of carbon dioxide production during exercise
D
the numbers of male and female fish in a lake
15

Which series of diagrams correctly represents the order of mitosis?

A
The steps of mitosis are shown. In step 1, the cell starts to break down structures. In step 2, the chromosomes line up at the center. In step 3, the chromatids separate from each other and are pulled to opposite ends of the cell. In step 4, the cell is divided.
Option A
B
The steps of mitosis are shown. In step 1, the cell starts to break down structures. In step 2, the cell is divided. In step 3, the chromatids separate from each other and are pulled to opposite ends of the cell. In step 4, the chromosomes line up at the center.
Option B
C
The steps of mitosis are shown. In step 1, the cell starts to break down structures. In step 2, the cell is divided. In step 3, the chromosomes line up at the center. In step 4, the chromatids separate from each other and are pulled to opposite ends of the cell.
Option C
D
The steps of mitosis are shown. In step 1, the cell starts to break down structures. In step 2, the chromatids separate from each other and are pulled to opposite ends of the cell. In step 3, the chromosomes line up at the center. In step 4, the cell is divided.
Option D
16

What is the primary purpose of writing a lab report?

A
to summarize the rules of the laboratory to the students who will use it
B
to communicate the specifics of an experiment that was conducted
C
to record observations in an organized format during the experiment
D
to record which days a student worked in the laboratory
17

Which is not something that occurs in translation?

A
A codon and an anticodon pair.
B
A peptide bond is created.
C
A molecule of mRNA is formed.
D
An amino acid is added to a polypeptide.
18

Which microscope uses a probe to map atoms on the surface of a specimen?

A
transmission electron microscope
B
compound light microscope
C
scanning electron microscope
D
scanning tunneling microscope
19

Sarah performs an experiment to see whether bees prefer red flowers or yellow flowers. Look at this table of results from the experiment. Number of bees found on yellow flowersNumber of bees found on red flowersDay 11214Day 21020Day 31418Day 41215What is the independent variable in this investigation?

A
time
B
color of flower
C
total number of bees
D
number of bees at each flower
20

Which diagram correctly shows how homozygous alleles are found on homologous chromosomes?

A
A chromosome is labeled Upper A a.
Option A
B
A chromosome is labeled a a.
Option B
C
2 chromosomes are labeled Upper A and a.
Option C
D
2 chromosomes are labeled a and a.
Option D

Did you find these answers helpful?

More from this Course

Quiz
1 verified answers

ATP

Assignment
1 verified answers

Warm-Up

Quiz
6 verified answers

Cumulative Exam