Question 1 (2 points)
A group of researchers investigated the effects of a drug called Pressure Drop Y on lowering
blood pressure in a group of men between the ages of 50 and 70 years old. The researchers did
the following experiment and obtained the indi
You have formulated a hypothesis: "Blueberries contain more vitamin C than raspberries." To test your hypothesis you measure vitamin C levels in 20 blueberries and 20 raspberries from bushes that were grown in the same area under the same environmental co
Question 23 (2 points)
Why do some scientists argue that viruses are non-living?
Question 23 options:
Viruses are able to reproduce
Viruses have an organized and complex structure
Viruses are not made of cells
Ch14 Qs with Ans
Identify the choice that best completes the statement or answers the question.
1) What do we mean when we use the terms monohybrid cross and dihybrid cross?
A) A monohybrid cross involves a single parent, whereas a dihyb
What is the main purpose of conducting experiments?
proving a theory correct
proving a hypothesis correct
making initial observations
disproving a hypothesis
Students are designing an experiment to see if changes in pH have an impact o
Hele Barnes- ACT 5140
Total variable costs:
Number of units sold=$4,400,000/$44=100,000
Unit variable cost: $2,600,00/100,000=$26
Question 27 (2 points)
If life on another planet were fundamentally like life on earth, the macromolecules of living things would be
based on which element?
Question 27 options:
Question 13 (2 points)
A man carries a sex-linked gene for Goltz Syndrome on his X chromosome. Who will he
pass this on to?
Question 13 options:
All of his daughters
Half of his daughters
All of his sons
Half of his sons
Question 18 (2 points)
Biomedical scientists study species as different as worms, fruit flies, mice, zebrafish, or rhesus monkeys
to understand human genes and how they lead to diseases. Why?
Question 18 options:
Because these species have many inherited
Question 6 (2 points)
What will most likely happen if a cell's lysosomes burst?
Question 6 options:
The cell would shrivel
The cell would divide into two cells
The cell would digest itself
The cell would need to manufacture more lysosomes
Question 19 (2 points)
Why are most food chains limited to 3 to 5 trophic levels?
Question 19 options:
The higher the trophic level, the larger the organism; the larger the organism, the less likely it will be prey.
The nutritional quality of existing bio
Question 34 (8 points)
In early spring, Dr. Tom Wilson notices that there is an equal distribution of long and short stemmed buttercups in
the vacant lot across the street from his house as well as in his own backward. In late summer he notes that there a
Question 20 (2 points)
Which of he following factors in considered teh greatest threat to biodiversity today?
Question 20 options:
Habitat destruction and fragmentation
Question 5 (2 points)
Which of the following statements about mitosis and meiosis is *NOT* true?
Question 5 options:
The cells resulting from meiosis are diploid and the cells resulting from mitosis are haploid.
Meiosis and meiosis both starts with one ce
Question 26 (2 points)
Which of the following situations has the greatest potential for observer bias in an experimental
Question 26 options:
Ms McCormack is an outside consultant who is conducting a health and wellness survey for a
Question 31 (10 points)
Using the provided image of a food web please answer the following
1. Name at least two producers, two herbivores and two carnivores in this
2. How does energy travel through this food web? What happens to the
Question 11 (2 points)
Consider a cell that underwent mitosis but not cytokinesis. What would the result be?
Question 11 options:
One cell with one nucleus containing twice the normal number of chromosomes
One cell with two nuclei, each containing a norma
Question 28 (2 points)
Which of the following statements best describes the relationship between photosynthesis and
Question 28 options:
Photosynthesis occurs only in plants and respiration occurs only in animals.
Respiration is anabolic and
Question 25 (2 points)
How does high heat impact most enzymes?
Question 25 options:
Enzyme activity is decreased due to hydrolysis
Enzymes are inactivated due to denaturation
Enzyme activity is increased due to saturation
Since enzymes are temperature ind
Question 12 (2 points)
In humans, the allele for brown eyes (B) is dominant. The allele for blue eyes (b) is recessive. If a woman
with genotype BB and a man with genotype Bb have four children, how many of the children will have
Question 12 op
Question 33 (8 points)
Lithops are succulent plants that resemble stones. Describe four of the characteristics of life that
distinguish these plants from the dead stones they mimic.
Question 33 options:
Question 22 (2 points)
What is one way in which energy flow differs from chemical cycling?
Question 22 options:
Energy flow is unidirectional; chemical elements can be recycled.
Energy can enter but cannot leave an ecosystem; chemical elements can leave b
Taxonomy and Phylogeny
Taxonomy and Phylogeny
Speciation as a branching process
Common ancestor and descendants
The tree of Life and common ancestry
Systematics: reconstructing history
Taxonomy: naming and cla