Midterm Flashcards Preview

Exploring Creation with Biology > Midterm > Flashcards

Flashcards in Midterm Deck (56)
Loading flashcards...
1

Which of the following would most likely be the major focus of a biologist?
a. bacteria found in hot springs
b. the composition of water in hot springs
c. the temperature of hot springs
d. the location of hot springs

a. bacteria found in hot springs

2

Which is not a topic of biology?
a. the relationship between fungi and trees
b. the distribution of sand on an ocean floor
c. the chemicals at work in the stomach
d. the speed at which a hummingbird flies

b. the distribution of sand on an ocean floor

3

A person studying a topic is presented with new information that conflicts with previous findings. What would a scientist do in this situation?
a. ignore the new information
b. argue against the new information
c. evaluate the new information
d. keep the new information to himself or herself

c. evaluate the new information

4

Which of the following is an observation?
a. You measure the number of bacteria growing in a petri dish
b. You propose that bacteria will slow down their growth if the temperature is brought down.
c. You hypothesize that the bacteria will grow rapidly if the temperature is increased.
d. You conclude that the bacterial growth is affected by temperature.

a. You measure the number of bacteria growing in a petri dish

5

Tasha is testing the effect of blue-colored light on the growth of tomato plants. Which is the independent variable in this experiment?
a. light color
b. light intensity
c. amount of light
d. temperature of light

a. light color

6

___ represents a formula for a chemical compound (molecule).
a. H
b. C
c. P
d. H2O

d. H2O

7

The total number of atoms in a molecule of sucrose, C12H22O11, is ____.
a. 11
b. 12
c. 22
d. 45

d. 45

8

A molecule of water (H2O) has which bonds?
a. one covalent bond
b. one ionic bond
c. two covalent bonds
d. two ionic bonds

c. two covalent bonds

9

A single covalent bond forms when two atoms do which of these?
a. when they share one electron
b. when they share two electrons
c. when one gives an electron to the other
d. when one gives two electrons to the other

b. when they share two electrons

10

Which is an example of a chemical reaction?
a. ice melting
b. iron rusting
c. sugar dissolving in water
d. water evaporating

b. iron rusting

11

Two substances are combined and heat is produced. Does this provide evidence that a chemical reaction took place?
a. No, because heat is not a chemical
b. No, because this would be a physical change.
c. Yes, because energy is absorbed.
d. Yes, because energy is released.

d. Yes, because energy is released.

12

Which element is found in proteins but not carbohydrates or lipids?
a. C
b. H
c. N
d. O

c. N

13

Which of the following molecules serves as the primary source of fuel for the cell?
a. carbohydrate
b. fat
c. protein
d. water

a. carbohydrate

14

Amino acids are the building blocks of which macromolecule?
a. carbohydrate
b. DNA
c. lipid
d. protein

d. protein

15

An organism’s genetic information is stored in which type of macromolecule?
a. DNA
b. carbohydrate
c. lipid
d. protein

a. DNA

16

The major building block of the macromolecule mentioned in #15 above would be
a. simple sugars
b. fatty acids
c. nucleotides
d. amino acids

c. nucleotides

17

Which statement is a fundamental principle of the cell theory?
a. All cells have a plasma membrane.
b. Eukaryotic cells are larger than prokaryotic cells.
c. Living organisms are composed of cells.
d. The genetic material in cells is DNA

c. Living organisms are composed of cells.

18

Which statement is true about bacterial cells?
a. The cells are very large.
b. The cells have no organelles.
c. They are eukaryotes.
d. They have organelles.

b. The cells have no organelles.

19

Cholesterol is repelled by water and can be found in animal membranes and between phospholipids in a layer of the plasma membrane. What can be concluded from this information?
a. A high cholesterol diet should be avoided.
b. Cholesterol is nonpolar.
c. Cholesterol is polar.
d. Cholesterol is repelled by the polar tails.

d. Cholesterol is repelled by the polar tails.

20

Which organelle converts sugars into energy?
a. lysosome
b. mitochondrion
c. nucleus
d. ribosome

b. mitochondrion

21

Chloroplasts are organelles that use light energy to synthesize sugars. These organelles are found only in plants. Which organelles are found only in animals?
a. golgi apparatus
b. lysosomes
c. mitochondria
d. ribosomes

b. lysosomes

22

A plant cell is placed in a hypotonic solution. What will happen to the plant cell?
a. It will swell.
b. It will shrink.
c. It will stay the same.
d. It will wilt.

a. It will swell.

23

Cells are placed in an isotonic solution. Additional amounts of solutes are slowly added to the solution. What happens to the cells?
a. They will begin to swell.
b. They will burst.
c. They will stay the same.
d. They will shrink.

d. They will shrink.

24

By the end of prophase, each of the following has occurred except ____.
a. tighter coiling of the chromosomes
b. breaking down of the nuclear envelope
c. disappearing of the nucleolus
d. lining up of chromosomes in the cell

d. lining up of chromosomes in the cell

25

Which of the following occurs at the end of telophase?
a. chromosomes condense
b. chromosomes line up
c. chromosomes move to opposite poles
d. chromosomes uncoil and decondense

d. chromosomes uncoil and decondense

26

A cell has 12 chromosomes. When this cell undergoes mitosis, how many chromosomes will each daughter cell have?
a. 4
b. 6
c. 12
d. 24

c. 12

27

A cell has 12 chromosomes. When the cell undergoes meiosis, how many chromosomes will each gamete produced contain?
a. 4
b. 6
c. 12
d. 24

b. 6

28

Question 28
What is the role of the spindle fibers?
a. to join homologous chromosomes together
b. to store nucleotides prior to DNA synthesis
c. to initiate the formation of the nuclear membrane
d. to move chromosomes in the cell

d. to move chromosomes in the cell

29

Mendel took the pollen from a tall pea plant and pollinated the flower of a short pea plant. Before he did this, he removed the male parts of the flower on the short plant. Why was it important that he remove the male parts from the flower of the short plant?
a. because he wanted to prevent self pollination
b. because the short plant was heterozygous
c. because he wanted to generate new seeds in that plant
d. because the short plant was a mutant

a. because he wanted to prevent self pollination

30

Which series is arranged in order from largest to smallest in size?
a. chromosome, nucleus, cell, DNA, nucleotide
b. cell, nucleus, chromosome, DNA, nucleotide
c. nucleotide, chromosome, cell, DNA, nucleus
d. cell, nucleotide, nucleus, DNA, chromosome

b. cell, nucleus, chromosome, DNA, nucleotide