Navigation » List of Schools » East Los Angeles College » Biology » Biology 003 – Introduction to Biology » Summer 2020 » Exam 1
Below are the questions for the exam with the choices of answers:
Question #1
A By checking whether the authors are well qualified
B All of the other answer options are ways to check whether a source is reliable
C By checking whether the source of information is primary
D By checking whether the information was peer-reviewed
Question #2
A There is no difference between primary and secondary sources.
B A primary source is the original material published by the scientists, whereas a secondary source is a description of the original material.
C A primary source is the original material published by the scientists, whereas a secondary source is the raw data before scientists publish.
D A primary source is the raw data before scientists publish, whereas a secondary source is a description of the original material.
Question #3
A This study was published in a newspaper.
B This study was evaluated by qualified and impartial experts before being published.
C This study was not evaluated by other scientists.
D This study can now be viewed on the Internet.
Question #4
A Make two batches of cookies, both with bleached flour; one taster tries both types and ranks which type they like best.
B Make two batches of cookies, one with bleached flour and one with unbleached flour; twenty tasters try both types without knowing which ones they are eating and rank which type they like best.
C Make two batches of cookies, one with bleached flour and one with unbleached flour; twenty tasters try both types and rank which type they like best.
D Make two batches of cookies, one with bleached flour and one with unbleached flour; one taster tries both types and ranks which type they like best.
Question #5
A The test group knows whether they are receiving a placebo or the actual treatment, and so do the researchers.
B The test group knows whether they are receiving a placebo or the actual treatment, but the researchers do not know until all the data are collected.
C The test group does not know whether they are receiving a placebo or the actual treatment, but the researchers do.
D Neither the test group nor the researchers know whether the test group is receiving a placebo or the actual treatment until all the data are collected.
Question #6
A The hypothesis
B The placebo
C The dependent variable
D The controlled experiment
Question #7
A The tomato yield at the end of the growing season
B The fertilizer amount
C The temperature
D The plant size at the end of the growing season
Question #8
A The fertilizer amount
B The tomato yield at the end of the growing season
C The temperature
D The plant size at the end of the growing season
Question #9
A All of the other answer options are important characteristics of hypotheses.
B repeatable
C falsifiable
D testable
Question #10
A A guess
B A proposed explanation for an observed phenomenon
C A hypothesis that has been supported by the evidence of one experiment
D A hypothesis that has been supported by a large number of experiments
Question #11
A The transformation of energy and matter
B The theory of evolution by natural selection
C The flow of information from DNA to proteins
D The relationship between structure and function
Question #12
A is undertaken only by trained scientists in a controlled laboratory setting
B is a linear process that must be precisely followed at all times
C is a rough recipe for answering questions, but the steps need not always need to be performed in the same order
D is the means by which absolute truth can be uncovered
Question #13
A Making an observation
B Developing a hypothesis
C Making a prediction
D Carrying out an experiment
Question #14
A Skin is a vital component of multiple organ systems.
B Skin consists of a single cell type.
C Skin consists of multiple cell types functioning as a single integrated unit.
D Skin consists of multiple tissue types that cooperate to perform a specific task.
Question #15
A population
B ecosystem
C community
D species
Question #16
A Biosphere → Community → Population → Tissue → Organ → Cell → Atom → Molecule
B Ecosystem → Population → Community → Organ system → Organ → Cell → Molecule → Atom
C Ecosystem → Community → Population → Organ → Tissue → Cell → Molecule → Atom
D Community → Ecosystem → Population → Tissue → Organ → Cell → Organelle → Atom
Question #17
A Yes, it possesses all of the requirements for life.
B Yes, it possesses enough of the requirements for life to be considered living.
C No, it does not possess any of the requirements for life.
D No, it does not possess all of the requirements for life.
Question #18
A An atom
B A molecule
C A cell
D An organism
Question #19
A in the Golgi apparatus
B in the smooth endoplasmic reticulum
C in the cytoplasm
D in the rough endoplasmic reticulum
Question #20
A Proteins hold the instructions on how to make DNA.
B DNA is the end point of protein production that allows cells to finish making proteins.
C DNA holds the instructions for the cells on how to make proteins.
D DNA is not linked to the production of proteins.
Question #21
A Nucleus
B Chloroplasts
C Mitochondria
D Lysosome
Question #22
A vesicle
B flagellum
C pilus
D cilium
Question #23
A An energy molecule
B A protein
C A carbohydrate
D An information storage molecule
Question #24
A Nucleus, Golgi apparatus, ribosome
B Golgi apparatus, ribosome, rough endoplasmic reticulum
C Nucleus, smooth endoplasmic reticulum, Golgi apparatus
D Ribosome, Golgi apparatus
Question #25
A Transcription
B Translation
C Translocation
D Replication
Question #26
A Transcription occurs in the nucleus, and translation occurs in the cytoplasm.
B Transcription and translation both occur in the nucleus.
C Transcription and translation both occur in the cytoplasm.
D Transcription occurs in the cytoplasm, and translation occurs in the nucleus.
Question #27
A Chromosomes are strands of RNA, tightly wrapped up, that are in the cytoplasm.
B Chromosomes are strands of DNA, tightly wrapped up, that are located in the nucleus.
C Chromosomes are strands of DNA, tightly wrapped up, that are located everywhere in the cell.
D Chromosomes are strands of RNA, loosely wrapped up, that are located everywhere in the cell.
Question #28
A A substance goes from an area of high concentration to an area of low concentration, and this requires energy.
B A substance goes from an area of low concentration to an area of high concentration, and this requires energy.
C A substance goes from an area of high concentration to an area of low concentration, and this releases energy.
D A substance goes from an area of low concentration to an area of high concentration, and this releases energy.
Question #29
A simple diffusion
B osmosis
C facilitated diffusion
D hydrosmosis
Question #30
A The cell wall
B The nucleus
C The chloroplast
D The plasma membrane
Question #31
A Mitochondria
B Cell wall
C Vacuole
D Chloroplast
Question #32
A It is moving.
B It has ribosomes.
C It has a nucleus.
D It has DNA.
Question #33
A Eukaryotic cells evolved a lot earlier (over a billion years) than prokaryotic cells.
B Prokaryotic cells evolved a lot earlier (over a billion years) than eukaryotic cells.
C Scientists do not have any evidence regarding whether prokaryotic or eukaryotic cells evolved first.
D Prokaryotic cells and eukaryotic cells evolved at about the same time.
Question #34
A Cell wall
B Plasmids
C Plasma membrane
D Ribosomes
Question #35
A Peptide bond
B Hydrogen bond
C Polar bond
D Protein bond
Question #36
A lipid
B protein
C carbohydrate
D monomer
Question #37
A The reaction will proceed more quickly.
B The reaction will proceed more slowly.
C The reaction will stop completely.
D The reaction will reverse.
Question #38
A The amino acid chain folds incorrectly.
B All of the other answer options might happen
C The protein can no longer function properly.
D The protein has a new shape.
Question #39
A Unsaturated fat
B Saturated fat
C Trans fat
D Cholesterol
Question #40
A True, because high levels of cholesterol lead to obesity.
B False, because cholesterol levels are not related to human health.
C False, because some types cholesterol increase heart disease, but other types are necessary, especially in the plasma membrane.
D True, because high levels of cholesterol lead to increased heart disease.
Question #41
A hydrolysis reactions
B dehydration synthesis reactions
C osmotic reactions
D hydrosynthetic reactions
Question #42
A Carbohydrates, proteins, lipids, and nucleic acids
B Carbohydrates, lipids, proteins, and enzymes
C Carbohydrates, proteins, nucleic acids, and sugars
D Carbohydrates, lipids, proteins, and sugars
Question #43
A alkaline
B neutral
C acidic
D basic
Question #44
A Water is highly cohesive and adhesive, which allows it to bind to different substances as a solvent.
B Water is a heavy substance, and as such can disrupt pre-existing bonds.
C Water has a polar nature, and as such its polar molecules will bind to substances that have positive or negative charges.
D Water is very dense in its liquid state, which allows it to bind to different substances as a solvent.
Question #45
A ionic
B nonpolar
C hydrogen
D covalent
Question #46
A 6 neutrons and 6 electrons
B 8 neutrons and 6 electrons
C 6 neutrons and 8 electrons
D 7 neutrons and 7 electrons
Question #47
A chemical element
B ion state
C chemical properties
D isotope
Question #48
A Nitrogen
B Carbon
C Oxygen
D Calcium
Question #49
A During a chemical reaction, molecules are rearranged.
B The products of a chemical reaction always have the same mass as the reactants.
C There are chemical reactions close to you right now.
D During a chemical reaction, atoms of one element can be converted into a different element.
Question #50
A C10H8 and 12 O2
B C10H8 and 10 CO2
C 12 O2 and 4 H2O
D 10 CO2 and 4 H2O