Midterm Exam

Navigation » List of Schools » Irvine Valley College » Biology » Biology 1 – The Life Sciences » 2019 » Midterm Exam

Need help with your exam preparation?

Existing Quiz Clients Login here

Below are the questions for the exam with the choices of answers:

Try The Exam

Question #1

Which is the correct order of steps in the Scientific Method?,,

A Observation, Hypothesis, Question, Experiment, Conclusion, Prediction

B Observation, Hypothesis, Prediction, Experiment, Question, Conclusion

C Observation, Question, Hypothesis, Prediction, Experiment, Conclusion

D Prediction, Hypothesis, Observation, Question, Experiment, Conclusion

Question #2

____________ prevents leaking between neighboring cells.

A Gap junctions

B Centrioles

C ____________ prevents leaking between neighboring cells.

D Tight junctions

Question #3

Where would I go to watch active cellular respiration?

A smooth endoplasmic reticulum

B mitochondria

C rough endoplasmic reticulum

D lysosomes

Question #4

Which level of protein structure involves the formation of an alpha helix or beat pleated sheet?

A Tertiary structure

B Primary structure

C Quarternary structure

D Secondary structure

Question #5

Which is true regarding unsaturated fats?

A They have double bonded carbon atoms in their fatty acids

B They have a higher melting point

C They are associated with animal fat

D All of these answers are associated with saturated fats

Question #6

Mitosis occurs in support of sexual reproduction.

A TRUE

B FALSE

Question #7

Which of the following events in meiosis specifically results in shuffling of a species’ DNA?

A All of the choices are correct

B Independent assortment

C Crossing over

D Chromosomal reduction

Question #8

Somatic cells perform a form of cell division called ____________.

A Binary division

B Meiosis

C mitosis

D Binary reduction

Question #9

Which of the following processes produces O2 as a product?

A hydrolysis

B cell respiration

C condensation synthesis

D photosynthesis

Question #10

The role of transfer RNA is to _______________.

A to assemble amino acids into a polypeptide chain.

B bring the appropriate amino acids to the ribosome.

C to be a copy of a portion of the DNA molecule.

D to copy the appropriate DNA sequence for a particular protein.

Question #11

If a cell has a higher concentration of solutes inside its fluid than its surrounding environment, the cell is in _________

A a hypotonic environment

B an isotonic environment

C a hypertonic environment

D a platonic environment

Question #12

Which of the following events in cellular respiration harvests the most electrons from glucose?

A Krebs Cycle

B Electron Transport Chain

C Gycolysis

D Calvin Cycle

Question #13

A communityis defined as a group of the same species occupying a single habitat.

A FALSE

B TRUE

Question #14

So, in terms of osmosis, what happens when you mistakingly (I hope it was a mistake) put a salt water fish into a freshwater fishtank?

A the fish doesn’t consume enough water and probably dies

B The fish is fine, it can’t change its water consumption to fit the environment

C the fish consumes too much water and probably dies

D None of the above

Question #15

What is the main function of DNA?

A to speed up cell reactions

B to encode proteins

C to produce ATP

D to provide structural support to the cell

E All of the above

Question #16

The chemotherapy drug taxol inhibits microtubule function. A cell treated with taxol would become stuck in which phase?

A prophase

B telophase

C anaphase

Question #17

In Translation, what does the translating?

A RNA polymerase

B the transfer RNA

C the ribosome

D the amino acids

Question #18

In a “silent” mutation

A the mutation is not in DNA.

B the codon that mutates does not cause a change in the amino acid specified.

C the codon that mutates causes a stop codon to occur instead of the placement of an amino acid.

D the codon that mutates causes a change in the amino acid specified.

Question #19

Many viruses are inhibited by antibiotics

A FALSE

B TRUE

Question #20

Proteins are made up of ______ different kinds of amino acid.

A 20

B hundreds of

C 46

D 4

Question #21

A chromosome is made of

A Histones

B Chromatin

C DNA

D All of the above

Question #22

The majority of a cell’s life cycle is spent in

A Interphase

B Cytokinesis

C G2 phase

D Mitosis

Question #23

How many different types of bases are used to encode all the genetic in a molecule of DNA?

A 2

B 20

C 22223

D 4

Question #24

How many codons are in the mRNA sequence GGAAUGAAACAGGAACCC?

A 18

B 0

C 3

D 6

Question #25

All mutations are harmful

A FALSE

B TRUE

Question #26

Which organelle is responsible for the synthesis of lipids?

A Smooth endoplasmic reticulum

B Rough endoplasmic reticulum

C The nucleus

D Mitochondrion

Question #27

Which organelle is responsible for the making of ribosomes?

A Lysosome

B Rough endoplasmic reticulum

C Nucleolus

D Golgi apparatus

Question #28

Which color of light is least used as an energy source to power photosynthesis?

A Red

B Yellow

C Green

D Blue

Question #29

CAM photosynthesis is a special process that evolved in those plants that live in cooler, more low light conditions.

A TRUE

B FALSE

Question #30

Cell membranes are semipermeable, as water is not allowed to pass through them freely.

A TRUE

B FALSE

Question #31

Cellular respiration of one molecule of glucose ultimately yields 136 molecules of ATP

A FALSE

B TRUE

Question #32

Plants perform photosynthesis but not cellular respiration.

A TRUE

B FALSE

Question #33

Plant cells function best when in a hypotonic environment.

A FALSE

B TRUE

Question #34

In plants, Photosystem II is known as the “NADPH-producing Photosystem”

A TRUE

B FALSE

Question #35

Which of the following is the correct order of the three stages of aerobic respiration?

A krebs cycle, glycolysis, electron transport

B electron transport, glycolysis, krebs cycle

C electron transport chain, krebs cycle, glycolysis

D glycolysis, krebs cycle, electron transport chain

Question #36

A ball at the top of a hill is an example of______ and a ball rolling down the hill is an example of ______.

A noncompetitive inhibition; competitive inhibition

B kinetic energy; potential energy

C potential energy; kinetic energy

D exergonic reaction; endergonic reaction

Question #37

How many of the following organelles occur in your skin cells: mitochondria, ribosomes, nucleus, lysosomes, chloroplasts, vacuole, ER

A 1

B 3

C 5

D 4

E 7

F 6

Question #38

Entropy is

A order

B simplicity

C disorder

D complexity

Question #39

Electrons orbit the nucleus because _______________.

A It’s a trick question–electrons don’t orbit the nucleus.

B of the positively-charged protons

C of the negatively-charged neutrons–like attracts like

D of the negative-charged protons

Question #40

Organic molecules are typically polymers.

A FALSE

B TRUE

Question #41

Theatomic mass of an atom only refers to the total number of protons in the nucleus.

A TRUE

B FALSE

Question #42

The body uses ____________ to maintain a constant pH.

A Lipids

B Buffers

C Carbon dioxide

D Water

Question #43

Within a single cell, which of the following is physically the smallest ?

A Mitochondrion

B Nuclear envelope

C Cell membrane

D Phospholipid molecule

Question #44

Isotopes are elements that vary in their number of neutrons.

A FALSE

B TRUE

Question #45

Beryllium’s atomic mass is 9 and its atomic number is 4. How many neutrons are found in a Beryllium atom?

A 14

B 9

C 5

D 13

Question #46

Which phase of mitosis involves the lining up of the chromosomes?

A Anaphase

B Telophase

C Prophase

D Metaphase

Question #47

Which of the following processes produces O2 as a product?

A cell respiration

B hydrolysis

C condensation synthesis

D photosynthesis

Question #48

_____________ are found in plant cells but not animal cells.

A Central water vacuoles

B Cell membranes

C Rough endoplasmic reticula

D Mitochondria

Question #49

Which of the following is the smallest unit of life?

A The organic molecule (like DNA)

B The organism

C The organelle

D The cell

Question #50

Which of the following is an example of an electron carrier (transport) molecule?

A NADH

B Acetyl-CoA

C Glucose

D ATP

Question #51

Which organelle is specifically associated with photosynthesis?

A Chloroplasts

B Mitochondria

C Ribosomes

D Centrosomes

Question #52

Which of the following events in cellular respiration produces the most ATP?

A Gycolysis

B Electron Transport Chain

C Calvin Cycle

D Krebs Cycle

Question #53

Which of the following does not occur during prophase?

A The condensation of the chromosomes

B Formation of the nuclear membrane

C The initial formation of the spindle fibers

D None of the above (all occur during prophase)

E None of the above (all occur during prophase)

Question #54

Which is produced when your muscles enter into anaerobic respiration?

A Lactic acid

B Sugar

C ATP

D Both Lactic acid and ATP

Question #55

Where would I go to watch active protein synthesis?

A mitochondria

B lysosomes

C smooth endoplasmic reticulum

D rough endoplasmic reticulum

Question #56

The role of messenger RNA is to _______________.

A to copy the appropriate DNA sequence for a particular protein.

B to be a copy of a portion of the DNA molecule.

C to assemble amino acids into a polypeptide chain.

D bring the appropriate amino acids to the ribosome.

Question #57

Which organelle is a principle site of cell product packaging and storage?

A Mitochondrion

B Golgi apparatus

C Rough Endoplasmic Reticulum (ER)

D Lysosome

Question #58

Cell cytoplasm is primarily composed of ___________.

A protein

B carbohydrate

C water

D lipid

Question #59

If a cell has a lower concentration of solutes inside it’s fluid than its surrounding environment, the cell is in _________

A a platonic environment

B an isotonic environment

C a hypotonic environment

D a hypertonic environment

Question #60

Enzymes function by increasing the energy of activation of a chemical reaction so that the reaction can go faster.

A TRUE

B FALSE

Question #61

Which is true regarding saturated fats?

A They are associated with animal fat

B They have a higher melting point

C They lack double bonded carbon atoms in their fatty acids

D All these answers are associated with saturated fats

Question #62

Which of the following is an example of an element?

A Salt

B Water

C Glucose

D Carbon

Question #63

An atom with a positive charge has

A equal numbers of protons, electrons, and neutrons

B more electrons than protons

C more neutrons than protons

D more protons than electrons

Question #64

Which type of chemical bond involves the sharing of electrons in the outer shells of atoms?

A James Bonds

B Hydrogen bonds

C Ionic bonds

D Covalent bonds

Question #65

Which two levels are farthest apart on the hierarchy of biological organization ?

A Ecosystem and biosphere

B Organism and population

C Tissue and organ

D Atom and Cell

Question #66

Which of the following is properly characterized as a producer?

A Both a mushroom and an oak tree

B A mushroom

C An eagle

D An oak tree

Question #67

Which of the following is not a characteristic of all living organisms?

A Multicellularity

B Energy Utilization

C Homeostasis

D Order

Try The Exam

Fresh Grad Lands Job as Real Estate Agent With Help from Professional Writers

Need help with your exam preparation?

Below are the questions for the exam with the choices of answers:

Christian S.

Tyra

Linda

Manush

We accept payment