Upgrade to remove ads
Bio Lab Exam
Terms in this set (88)
If Susan is specifically testing the hypothesis that bumblebees prefer red flowers, then what is her control?
all flowers that are not red
Susan is studying which flowers bumblebees select in a patch of garden flowers. Which of the following is NOT a standardized variable in her experiment?
At the end of the study the results show that bumblebees spend 80% of their time feeding from red flowers. Thus, Susan
found her data supported her hypothesis
You only had to survey 10 plants, but the whole class will end up with a much larger collective data set. Which data set is the one upon which you should base your ultimate conclusion about the hypothesis?
The larger class data set.
Usually parallel veins
Branched or netlike Veins
Vascular Bundles in an arranged ring
Vascular bundles in no specific order
Tap root system
Fibrous root System
Floral parts in multiples of three
Floral parts in multiples of five
Check ALL of the following that correctly describe the scientific method.
If even one datum (data point) refutes the hypothesis, we must reject it.
From my experiment of looking at 10 plants ALL of the dicots you saw had branched stems or trunks, and ALL of the monocots had single stems or branches.
Osmosis is the special transport process for the movement of in and out of the cells
Which of the following transportation of molecules across a cell membrane does NOT require energy?
has a high concentration of dissolved solute relative to the outside of the cell
has a low concentration of dissolved solute relative to the outside of the cell
has an equal concentration of dissolved solute relative to the outside of the cell
When osmosis occurs the cell loses or gains water because the solute cannot cross the membrane.
In your egg experiment, the egg lost water through its membrane when it was placed in a/an [ Select ] ["Isotonic", "Hypertonic", "Hypotonic"] solution and your egg gained water through its membrane when it was in a/an [ Select ] ["Isotonic", "Hypotonic", "Hypertonic"] solution
When an egg is placed in a high salt solution, the salt is known as the ___ and the water is called the ____ .
What type of solution is the 0.9% saline (NaCl) she puts her cheek cells in?
In the video: What does she do to the cells, to make them more easily visible?
adds a stain called methylene blue
In the plant cells you are able to see which of the following specific structures, more than one answer.
Large Central Vacuole
There are spaces between the cells in a plant.
The Capsule surrounding a bacteria is smaller than the bacterium itself.
What is the dark region of an animal cell called?
Bacteria are classified as [ Select ] ["Prokaryote", "Eukaryote"] because they lack a true nucleus. They are always unicellular . Plants and animal are called [ Select ] ["Eukaryotes", "Prokaryotes"] because they are composed of cell that always have nucleus and can be unicellular or multicellular
Answer 1: Prokaryote
Answer 2: lack
Answer 3: unicellular
Answer 4: Eukaryotes
Answer 5: have
Answer 6: multicellular
What is the name of the structures that allows for gas exchange on the leaf?
The metabolic process we were indirectly observing, [ Select ] ["Photosynthesis", "Plant breathing", "Cellular respiration"] , was verified by measuring bubbles per minute, representing this product of the process [ Select ] ["oxygen", "carbon dioxide", "hydrogen", "water"] .
Answer 1: Photosynthesis
Answer 2: oxygen
In Photosynthesis carbon dioxide is the gas needed for production of Glucose and water is needed as the electron donor resulting in oxygen gas been given off
Answer 1: carbon dioxide
Answer 2: water
Which set of reactions of Photosynthesis were we directly manipulating in this experiment?
The Light Reactions
When Light Intensity on a plant increases, which of the following are true? (Select all that apply)
Photons strike the chlorophyll and other plants pigment at a faster rate
there is more energy availble to produce glucose in the Calvin cycle
More ATP is produced
Name the tissues types in which Mitosis occurs ( multiple answers)
Mitosis is important for which of the following processes ( multiple answers, be careful to read all)
for growth of an organism,
produce genetically identical cells,
for asexual reproduction in some organisms
From our lab if we see a high percentage of the cells in Prophase what does that indicate about that phase of the cell cycle?
it is a longer phase of mitosis
Why do we see actively dividing cells in onion root tips?
roots are actively growing and the cells divide to make the roots longer
In the onion lab using the percentage of cells you calculated telophase was the shortest and prophase was the longest phase of MITOSIS ( not the cell cycle)
Use the image to match the cells to the correct Phases in Meiosis II
(partially wrong but the answers are hidden)
How many daughter cells are produced from one parental cell after mitosis and cytokinesis?
How many daughter cells are produced from one parental cell after meiosis and cytokinesis?
Sometime a process known as non-disjunction occurs and a gamete has an extra or missing chromosome. If a person has an extra chromosome 21 it is known as __________. This person does survive into adulthood
The "Code of Life" is written in what molecule
What percentage of your genes do you share with a banana?
How many nucleotide base pairs (represented by the letters A, T, C, and G) are in the human genome?
3 billion base pairs
Name of the respiratory disease caused by just THREE missing nucleotide base "letters" in a person's genome, that deletes an amino acid called Phenylalanine from the protein, and causes a membrane transport protein not to be made properly.
The BRCA1 and BRCA2 genes (now made famous by Angelina Jolie!) found in EVERY person
How does a DNA mutation ("misspelling") cause a disease, such as Tay-Sachs? Check all that apply
a protein enzyme is not made to break down lipids,
this enzyme is usually found in the lysosomes,
the parents don't usually know they are carriers of this gene, unless they get a genetic test
What does extracted DNA look like, to the naked eye
Which base is found in RNA but not in DNA?
How old is the earth?
4.5 billion years (old as balls)
How old are the oldest fossils found to date?
3.5 billion years
Which domain of organisms thrive, forming snot-like colonies, in the toxic-to-humans hydrogen sulfide caves?
What are the four main elements that make up all living things? Check all that apply.
Match the closest date that corresponds to each event in the history of life on Earth. * BYA ( billion years ago) MYA (million years ago)
Origin of Prokayotes
Origin of Multicelluar Life
about 700 to 550 MYA
Ancestors of Origin of Homosapiens (modern humans)
195, 000 years ago
Origin of the Domain Eukarya
542 MYA (million years ago)
Origin of Cyanobacteria
Which nucleotide base is most likely to have formed first, in the early atmosphere of the Earth?
Which nucleotide base can be formed by simply exposing another to sunlight?
Stromatolites found in Western Australia are are produced by which organism?
O2 ( Oxygen) was always present on the earth as a gas.
What is the closest current level of Oxygen in the atmosphere of earth today?
Unicellular eukaryotes appeared on the planet long before multicellular eukaryotes.
Which of these "great transformation: occurred first, in the history of life on Earth?
Hox (homeobox) genes built the first, simplest animal body plans
In the transitional forms between modern whales and Sinonyx (their walking, land-dwelling ancestor), which of the following anatomical features has disappeared completely?
The Cambrian explosion, when many new animal body forms evolved over a short period of evolutionary time, occurred [time] years ago.
Darwin's theory of evolution easily explains the Cambrian explosion.
The "eye-producing" gene from a mouse can be used by a fruit fly to make its normal compound eyes, seen below:
Humans evolved from chimpanzees.
Which mass extinction was the most destructive, resulting in the disappearance of over 90% of ALL life on Earth at that time?
Which mass extinction caused (most of) the dinosaurs to die out, while giving small primitive mammals a survival advantage?
Basic body building genes- Hox genes
Gonadal descent- Hernia
Tiktaalik- Head free from body ( neck)
Limbs- Wings, arms, flippers or feet
Opsin- Light capturing molecule
A huge amount of carbon originally resided in the Earth's atmosphere: where is most of it now?
Roughly how long has our species Homo sapiens existed on Earth?
How long has it been since we STOPPED being nomadic?
How many humans still live in a totally sustainable way, without using fossil fuels or modern technologies?
Since 1950, what has happened to global human population, roughly speaking
It has tripled
Roughly what proportion of our global population lives in cities?
Which of the following that have allowed modern agriculture to feed our massive global population? Select all that apply
How many liters of water does it take to raise one kilo (kilogram) of potatoes?
(FYI, 1 L = a bit over 1/4 gallon and 1 kg = about 2.2 pounds)
How many liters of water does it take to raise one kilo (kilogram) of rice? (FYI, 1 L = a bit over 1/4 gallon and 1 kg = about 2.2 pounds)
How many liters of water does it take to raise one kilo (kilogram) of beef? (FYI, 1 L = a bit over 1/4 gallon and 1 kg = about 2.2 pounds)
80% of the mineral wealth of the Earth is consumed by what percentage of our global population?
What percentage of global fish stocks (i.e., fisheries) are in danger of collapse
How many people are projected to suffer from water shortages by the year 2025
What common food ingredient is behind the deforestation of high-biodiversity regions of Borneo?
50% of the TOTAL wealth of the Earth is in the hands of what percentage of our global population?
By 2050, what percentage of Earth's species may be extinct?
Which of these are certain consequences of polar ice melting? (check all that apply)
Drinking water scarcity,
Sea level rise,
Other Quizlet sets
Social Psych Final Exam
Lecture 8: the cloud
Micrbio exam 3