Lab Practical 2160 Flashcards
If you have questions/concerns about biology lab you can speak with…
- TA
- Lab Coordinator
- Instructor of Record
You need to take each week’s quiz…
Before coming to class
How do you know what you are doing in lab each week?
Check the syllabus on page 9/10 in your lab manual. There is also a syllabus on Blackboard
What is your room number and your TAs name?
Ankit 1260
You are allowed ___ unexcused absences before being dropped from the class.
2
The scientific method is a series of steps. Which below has the steps in the correct order?
make observations, ask questions, form hypothesis and make predictions, test hypothesis
A controlled experiment…
is usually in the lab with variables
A standardized variable is…
variable held constant during an experiment
Which of the formulas below is the Hardy-Weinberg equation?
p2+2pq+q2
When calculating genotypic frequencies in a population, the frequencies of the two alleles (p+q), and the frequencies of the various genotypes must equal…
1.0
Define population.
all the members of the same species that live in one locale
Gram staining is used to identify
bacteria
What domain will we NOT be looking at today?
archaea
Gram staining turns a bacteria either pink or
purple
The 2 prokaryotic domains are Bacteria and
Archaea
You are looking up information online for your lab report. You find several webpages and want to pick the most reliable information. Which below is the LEAST reliable web page?
A webpage with no date when it was published
A dependent variable is…
factor showing response
Spirometry is used to diagnose and monitor lung problems, for example, chronic obstructive pulmonary disease (COPD) and asthma.
True
In the Vital Capacity Lab, what is our test organism?
humans
What domain do viruses belong to?
None of the above
What are the correct names for the 3 domains?
Bacteria, Archaea, Eukarya
What is conjugation in Paramecium?
exchange of genetic material- NOT sex or reproduction
Which below is not one of the 3 principal organs of plants? Roots
B.
Leaves
C.
Stems
D.
Wood
Wood
Alternation of generations means alternating…
diploid/ haploid
What is tidal volume in terms of lung capacity?
normal breathing at rest
What is surfactant? What is its role in the body?
a mixture of fat and proteins made in the lungs.
different muscle amount
different physical activity level
lung disease
or anything else that makes sense
Some organisms do not have questions associated with them. Could these organisms end up on the final lab practical as an identification question?
Yes
What will you dissect in lab this week?
squid
The style is found in…
flowers
In pine trees, the gametophyte is dependent on the sporophyte. What does that mean? Would you ever find the pine gametophyte living by itself? Is this true of all plants?
gametophyte attached to and nutritionally dependent on sporophyte, never find gametophyte independent, not true in other plants
Which below is NOT true of monocots?
Flower parts in 4 or 5
taproot
Roundworms belong to what phylum?
Nematoda
What is parthenogenesis?
Diploid eggs develop without fertilization
Phylum Brachipoda resembles what other Phylum?
Mollusca
Crustacea have biramous appendages. What does this mean?
2-branched
The name centipede literally means hundreds of feet. In reality, how many PAIRS of feet do they have per body segment?
one
In the nervous system lab, what organism will/did we use to investigate sensory systems?
humans
Photoreceptors respond to…
light
Lampreys belong to Class Agnatha because they lack jaws.
True
Which animal is NOT in Class Mammalia?
Lamprey
The first land vertebrates belong to which Class?
Amphibia
What is the cavity that contains the bulk of organs called? (indicated by bracket C on the diagram)
coelom
What are vibrissae?
whiskers/long sensory hairs
Thermoreceptors fire in response to a temperature difference. How was this demonstrated by the bowls of hot, room temperature, and cold water?
The hand in hot water put in room temp water felt cold–temperature difference from hot to cooler made cold receptors fire
What are the 3 colors of cones in the human eye?
red, green, and blue
Touch. Von Frey hairs were used to test different areas of the body. Which areas did or were expected to have more sensitivity than others? Why?
Different areas are more sensitive because of large concentration of touch receptors. Expected sensitive areas - lips, fingertips, underside of forearms
Which term below is NOT a name for the categories of the 4 basic types of tissue?
connective tissue, epithelial tissue, muscle tissue, and nervous tissue, cheek cells
cheek cells
What terms are you responsible for on the skeletons?
every term on every diagram given
What structure divides the thoracic and abdominal cavities? It is indicated by the red arrow.
Diaphragm
On the diagram of the male rat, what does the red arrow point to?
Testis (bottom circle)
On the diagram of the male rat, what does the red arrow point to?
Penis (in the middle, straight)
Cheek cells belong to which basic tissue type?
epithelial
Which bone is part of the axial skeleton?
ribs
Which bone is part of the axial skeleton?
cranium
What is chemical digestion (as contrasted with physical digestion)?
Actual breaking of bonds to turn polymers into monomers
Enzymes work best in a particular pH range. Outside of this range they lose their shape or ________.
Denature
A tube has heavy cream, bromothymol blue and pancreatin added. Will digestion occur? Why or why not?
Yes. Correct substrate and enzyme but without bile salts will proceed slower than with them.
A tube has water and pancreatin. After incubation, what will the Benedict’s results be? Why?
No digestion, no starch - negative test results
A tube has bromothymol blue, bile salts and pancreatin added. Will digestion occur? Why or why not?
No. No substrate (no fat)
What is the definition of population?
A group of interbreeding individuals of the same species
Why are cohort studies not used in humans?
Humans have a long life span
