Discover Biology: Errata
- Chapter 1 Study Guide Question, Factual Knowledge #3:
"bicepts muscle" -> "biceps muscle".
- Chapter 1 Study Guide Question, Factual Knowledge #7:
"Which of the following would you expect to find in all cells taken from a rose, a mushroom, and a cat?"
Both DNA and Tissues are correct? (e.g., mushrooms have tissues in hyphae)
- Figure 2.6:
roses should not be shown as multi-petaled hybrids: roses should have 5 petals.
- Activity 2.2:
chimpanzee and human should both be acceptable in either branch of the "Opposable" thumb" derived character;
chimpanzees did not evolve "earlier" than humans.
- Chapter 3 Study Guide Question #12:
Life on Earth began in the water. The first organisms believed to colonize land were plants?
Or green algae (Protista) P. 374?
- Figure 3.11 on CDROM:
carpels misspelled as carpals.
- Figure 4.2:
the illustration of insects should not include a centipede.
- Figure 4.3:
using symbols from different Linnean hierarchies is misleading:
should not compare Plants (kingdom) to Insects (class).
- Quiz 4.20:
According to the textbook, a habitat that has _______ species of plants will be ________ productive than a habitat with _______ species of plants.
answer can also be B (less; less; more), in addition to D(more; more; less)
- Quiz 5.17:
Monosaccharides are monomers, but DNA is not. Also, fatty acids are not true monomers.
- Figure 6.1:
Lipid bilayer should point the hydrophilic and hydrophobic arrows to the lipds rather than the proteins.
- Quiz 6.5:
The organelle with many large pores is nucleus, not nuclear envelope.
- Quiz 6.15:
A nucleus identifies an eukaryotic cell, not whether it is multicellular.
- Chapter 8 Study Guide Question, #22:
It is not true that plants "do not require oxygen in order to live".
- Figure 9.2:
the two neurons should be labeled sensory and motor "neuron", not "nerve".
The two neurons should not synapse directly in the spinal cord; there should be an interneuron in between.
- Activity 9.2:
- Activity 9.4:
slow signal transduction molecule should be a steroid hormone like progesterone,
not a growth factor such as PDGF
which cannot cross the plasma membrane. See Figure 9.10,
which is correct.
- Activity 12.2:
- Activity 12.3:
"Characteristic such as flower color are determined by two separate packets of genetic information (genes)" - genes should be alleles.
- Activity 12.4:
the "NEXT" and "BACK" buttons are in reversed positions from Activity 12.3,
- Chapter 12 Study Guide Question, #17:
Many lethal traits are recessive. If the lethal allele were completely dominant, where L = lethal and l = living,
what problem would be caused?
Answer a: On average, 75 percent of each generation would die assumes parents are heterozygous,
but the heterozygotes would be dead and never become parents.
- Activity 13.4:
typo in Question 3/3, Dominant answer is correc, but
affected female is generation I, not III.
- Activity 13.5:
no narration on Huntington's Disease panel.
Also none of the panels includes disease alleles, and are not useful.
- Old Quiz 13.20:
answer should not be D, but B
- Quiz 14.19:
answer should not be C, but B (and E?)
- Chapter 15 Study Guide Question, #25:
What is the significance of the ability of different codons to encode the same amino acid?
Answer should not be d, but c:
Some mutations in the DNA sequence may not cause an error in the final protein product.
- Chapter 15, Page 256::
RNA Polymerase cannot always unwind DNA double helix; this is done by Transcription Factors in eukaryotes.
- Activity 15.1:
- Activity 17.1:
The illustration for a housefly is wrong. A firefly does not look like a fly with 2 wings; it is a beetle with 4 wings covered by elytra,
and the head has long antennae and is covered by a pronotum.
- Activity 17.1:
"genetic transformation" -> "genetic engineering"; transformation means something else.
- Activity 17.1:
"When stimulated, the luciferase enzymes begin to glow within the cytoplasm." Luciferase is a protein and cannot glow. It is luciferin
that enables bioluminescence.
- Activity 17.4:
"photocopies" -> "copies".
- Activity 17.5:
"complementary pairs" -> "homologous pairs".
- Activity 17.6:
"digested with three different enzymes" -> "digested with three different restriction enzymes",
"which individual is the child's father" -> "whether individual one is the child's father".
- Figure 21.7:
missing balloon captions. ALso, plants are not good illustrations of allopatric speciation: wind or insect pollinating
agents can easily cross a water barrier.
- Chapter 19, Figure 19.2: The peppered moths should not be shown against tree bark;
they do not usually perch there. Better yet, do not show this flawed study.
- Chapter 19, P. 325: "embryonic gill pouches" -> "embryonic pharyngeal pouches".
- Activity 20.1:
mix of "NEXT" and "BACK" buttons confusing.
- Quiz 20.13:
Which of the following human diseases is not believed to have spread from domestic animals:
Bubonic plague, Mad Cow disease, Smallpox, Tuberculosis.
All of the above should be None of the above?
- Quiz 22.24:
A mass extinction has just occurred wiping out 85 percent of all land animals. What are the key effects on the diversity of life after this mass extinction?
answer should be C (New ecological and evolutionary opportunities will become available to those organisms that survive.),
not B (Entire groups of organisms will not survive.)?
- Figure 22.3:
The vertical jumps in oxygen levels at 2 and 1 billion YA are misleading: what can cause such sudden increases?
- Activity 24.4:
No narration on epithelial cells. "transmit nervious signals" -> "transmit nervous signals".
- Chapter 28 essential ideas:
"The elements carbon, hydrogen, and oxygen make up 93 percent of the weight of an organisms and are known as macronutrients." But
shows a total of 9 elements as macronutrients.
- Chapter 28 essential ideas:
"Plants gather mineral nutrients directly from the soil at the roots":
Mineral nutrients dissolved in water are absorbed by plant roots from the soil
(The minerals are not taken "directly" from the soil, but need to be dissolved in water, and "gather" is a poor word choice).
"Plants find food by allowing their roots and leaves to grow through the food itself."
Leaves are not involved in finding food.
- Figure 28.7 and
cecum should be between small intestine and colon.
- Figure 28.\117 p. 476:
mycorrhizal fungi are not particularly unique to plants in bogs or to the Ericaceae and should not be used to illustrate adaptations to
- Activity 33.5:
The caption around day 13 says "Estrogens inhibit LH and FSH release" - this period is the LH surge and ovulation.
- Test Bank question 33.45:
"Insulin promotes the storage of amino acids that result from the digestion of proteins." Answer should be F.
- Figure 35.2:
Flagella of a rod-shaped baterium should project at one end, not from sides.
- Figure 35.3:
flowers open from turgor pressure of water, not from cell division.
- Quiz 35.4:
Behavior in plants, such as the opening and closing of flowers in response to temperature, results from
B. different rates of cell division on petal surfaces is wrong; cell division takes too long,
and is mot reversible, to open and close flowers.
- Quiz 39.4:
London should be compared to the same latitude, not longitude, in North America.
- Quiz 39.13:
You have been teleported to a terrestrial region of Earth you have never visited before. How would you determine what biome you were in?
Answer should be D (a and b): terrestrial biomes are characterized by both climate and species.
- Figure 40.4:
South America and Africa were not "connected to one another"
when the southern beech tree evolved 65 million years ago. The maps
shown in Figure 22.6
and also in Activity 40.1
are more accurate: the two continents started to drift apart during the Jurassic, and were well separated by the
- Figure 41.5:
carrying capacity should refer to the environment (habitat, ecosystem), not the population.
- Figure 41.7:
The reindeer crash occurred on St. Matthew Island, not St. Paul.
- Activity 42.1:
Bees use nectar, not pollen, to make honey; pollen and nectar are used to make bee bread.
- Activity 42.2:
lynx predation may not be the cause of hare population cycles; the two cycles are probably inter-related.
- Quiz 42.10:
Why is Parasitism considered a symbiotic relationship?
- Activity 43.3:
Cichlid extinction can be caused by both the Nile perch and by pollution.
- Quiz 42.12:
Algae can grow independent of the fungal partner.
- Figure 43.2:
A food web should include decomposers.
- Quiz 43.16:
In a pond, you note a snapping turtle, tadpoles, algae, various species of aquatic insects, and many fish. This pond community represents a:
Food web is not the only correct answer; food chain and food pyramid are not wrong in this scenario.
- Chapter 43 Study Guide Question #7:
Organisms that eat producers are known as:
either b. secondary producers (p. 727), or c. primary consumers.
- Quiz 44.3:
Some life forms do depend on chemical energy, not all life depend on solar energy.
- Quiz 44.4:
The fact that resources are limited means that for organisms to survive they must _______ materials:
a. reuse is also acceptable in addition to d. recycle; in fact "reuse" should come before "recycle"
in the 3 R's of recycling: "reduce, reuse, recycle".
- Activity 45.2:
Car engines do not fix nitrogen (also on p. 743);
engines like diesels emit Nitrogen oxides, but do not produce ammonia or ammonium.