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, Prediction, Experiment, Question, Conclusion

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

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 Tight junctions

C Centrioles

D ____________ prevents leaking between neighboring cells.

Question #3

Where would I go to watch active cellular respiration?

A mitochondria

B lysosomes

C smooth endoplasmic reticulum

D rough endoplasmic reticulum

Question #4

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

A Primary structure

B Secondary structure

C Quarternary structure

D Tertiary structure

Question #5

Which is true regarding unsaturated fats?

A They have a higher melting point

B All of these answers are associated with saturated fats

C They are associated with animal fat

D They have double bonded carbon atoms in their fatty acids

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 Crossing over

B Independent assortment

C All of the choices are correct

D Chromosomal reduction

Question #8

Somatic cells perform a form of cell division called ____________.

A mitosis

B Binary reduction

C Meiosis

D Binary division

Question #9

Which of the following processes produces O2 as a product?

A condensation synthesis

B photosynthesis

C cell respiration

D hydrolysis

Question #10

The role of transfer RNA is to _______________.

A bring the appropriate amino acids to the ribosome.

B to assemble amino acids into a polypeptide chain.

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 hypertonic environment

B an isotonic environment

C a platonic environment

D a hypotonic environment

Question #12

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

A Calvin Cycle

B Krebs Cycle

C Gycolysis

D Electron Transport Chain

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 consumes too much water and probably dies

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

D None of the above

Question #15

What is the main function of DNA?

A to produce ATP

B to encode proteins

C to speed up cell reactions

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 anaphase

C telophase

Question #17

In Translation, what does the translating?

A RNA polymerase

B the ribosome

C the transfer RNA

D the amino acids

Question #18

In a “silent” mutation

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

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 mutation is not in DNA.

Question #19

Many viruses are inhibited by antibiotics

A TRUE

B FALSE

Question #20

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

A 4

B 20

C 46

D hundreds of

Question #21

A chromosome is made of

A DNA

B Histones

C Chromatin

D All of the above

Question #22

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

A Cytokinesis

B G2 phase

C Interphase

D Mitosis

Question #23

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

A 20

B 2

C 4

D 22223

Question #24

How many codons are in the mRNA sequence GGAAUGAAACAGGAACCC?

A 3

B 18

C 0

D 6

Question #25

All mutations are harmful

A FALSE

B TRUE

Question #26

Which organelle is responsible for the synthesis of lipids?

A The nucleus

B Mitochondrion

C Rough endoplasmic reticulum

D Smooth endoplasmic reticulum

Question #27

Which organelle is responsible for the making of ribosomes?

A Lysosome

B Nucleolus

C Golgi apparatus

D Rough endoplasmic reticulum

Question #28

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

A Yellow

B Red

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 FALSE

B TRUE

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 FALSE

B TRUE

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 glycolysis, krebs cycle, electron transport chain

D electron transport chain, krebs cycle, glycolysis

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 exergonic reaction; endergonic reaction

D potential energy; kinetic energy

Question #37

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

A 6

B 1

C 4

D 5

E 7

F 3

Question #38

Entropy is

A order

B complexity

C disorder

D simplicity

Question #39

Electrons orbit the nucleus because _______________.

A of the positively-charged protons

B of the negative-charged protons

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

D of the negatively-charged neutrons–like attracts like

Question #40

Organic molecules are typically polymers.

A TRUE

B FALSE

Question #41

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

A FALSE

B TRUE

Question #42

The body uses ____________ to maintain a constant pH.

A Lipids

B Buffers

C Water

D Carbon dioxide

Question #43

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

A Cell membrane

B Nuclear envelope

C Mitochondrion

D Phospholipid molecule

Question #44

Isotopes are elements that vary in their number of neutrons.

A TRUE

B FALSE

Question #45

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

A 9

B 5

C 14

D 13

Question #46

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

A Telophase

B Anaphase

C Metaphase

D Prophase

Question #47

Which of the following processes produces O2 as a product?

A hydrolysis

B photosynthesis

C cell respiration

D condensation synthesis

Question #48

_____________ are found in plant cells but not animal cells.

A Mitochondria

B Cell membranes

C Central water vacuoles

D Rough endoplasmic reticula

Question #49

Which of the following is the smallest unit of life?

A The cell

B The organic molecule (like DNA)

C The organelle

D The organism

Question #50

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

A ATP

B Glucose

C NADH

D Acetyl-CoA

Question #51

Which organelle is specifically associated with photosynthesis?

A Ribosomes

B Chloroplasts

C Mitochondria

D Centrosomes

Question #52

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

A Gycolysis

B Electron Transport Chain

C Krebs Cycle

D Calvin 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 ATP

B Both Lactic acid and ATP

C Sugar

D Lactic acid

Question #55

Where would I go to watch active protein synthesis?

A rough endoplasmic reticulum

B lysosomes

C smooth endoplasmic reticulum

D mitochondria

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 bring the appropriate amino acids to the ribosome.

D to assemble amino acids into a polypeptide chain.

Question #57

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

A Golgi apparatus

B Mitochondrion

C Lysosome

D Rough Endoplasmic Reticulum (ER)

Question #58

Cell cytoplasm is primarily composed of ___________.

A lipid

B water

C protein

D carbohydrate

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 hypotonic environment

B a platonic environment

C an isotonic 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 lack double bonded carbon atoms in their fatty acids

B All these answers are associated with saturated fats

C They have a higher melting point

D They are associated with animal fat

Question #62

Which of the following is an example of an element?

A Carbon

B Salt

C Water

D Glucose

Question #63

An atom with a positive charge has

A equal numbers of protons, electrons, and neutrons

B more neutrons than protons

C more electrons 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 Ionic bonds

C Hydrogen bonds

D Covalent bonds

Question #65

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

A Tissue and organ

B Organism and population

C Atom and Cell

D Ecosystem and biosphere

Question #66

Which of the following is properly characterized as a producer?

A An oak tree

B An eagle

C A mushroom

D Both a mushroom and an oak tree

Question #67

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

A Homeostasis

B Multicellularity

C Energy Utilization

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