The heart and circulatory system in vertebrates has changed significantly compared to the two-chambered heart of our fish ancestors. Describe the major changes in the general structure of the vertebrate heart starting with fish to amphibians to mammals and birds. Be sure to explain the evolutionary significance of these changes. For example, explain how changes in the heart have allowed mammals to grow large and both birds and mammals to be more active.
In: Biology
1. Explain the difference between inorganic and organic molecules.
2. Define:
a. salt
b. electrolyte
c. anion
d. cation
e. acid
f. base
g. pH
h. buffer
In: Biology
what effect did Sutton's discovery that chromosomes come in pairs have on his life?
In: Biology
Explain how naproxen sodium and ibuprofen are structurally similar.
In: Biology
1. Which sex chromosomes are limited to only one sex?
A. X and Z
B. X and W
C. Y and Z
D. Y and W
E. X and Y
2. Which karyotype is female in flies and male in humans?
A. XX
B. XY
C. XO
D. XXY
E. XYY
3. Which karyotype is male in flies and female in humans?
A. XX
B. XY
C. XO
D. XXY
E. XYY
4. Which karyotype can have 2 Barr bodies?
A. XY
B. XX
C. XXY
D. XXXY
E. XXXXY
5. Which human genetic disorder is not caused by aneuploidy?
A. Down syndrome
B. Edward syndrome
C. Patau syndrome
D. Klinefelter syndrome
E. CML (Chronic Myelogenous Leukemia)
6. If you are a male, your X chromosome contains genes derived
from
A. your paternal grandfather only.
B. your maternal grandfather only.
C. both your paternal and maternal grandfathers.
D. both your paternal grandfather and grandmother.
E. both your maternal grandfather and grandmother.
In: Biology
List 3 potential metabolic "fates" of pyruvate OR glucose-6-phosphate. Indicate the metabolic environment associated with each fate (i.e. catabolic/ATP producing/anabolic/etc)
In: Biology
8. A man has blood type A and his wife has type B. A physician types the blood of their four children and is amazed to find one of each of the four blood types among them. He is not familiar with genetics and calls upon you for an explanation. Provide one.
In: Biology
33. True or False. The hormones involved in the hypothalamic are non-tropic in nature
answer quickly please
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The bridge reaction between glycolysis and Krebs involves the conversion of __________ to Acetyl CoA.
In: Biology
Identify at least two (2) factors (other than culture) that can impact a person's food choices and provide a specific example for each. PLease use apa citation with this answer
In: Biology
In microbiology, many different species of bacteria may have the same shape – rods, spheres, or spirals. Using the Internet as an information source, list some criteria that microbiologists can use to key out microorganisms that may have the same physical appearance.
In: Biology
2. Explain these Bioethical Issues ( Minimum of 5 Sentences each)
a. Abortion
b. Euthanasia
c. Female Genital Mutilation
d. Contraception
e. Stem Cell, Cloning and Genetically Modified Organisms (GMOs)
f. Organ and Blood Donation
In: Biology
The Black Langshan chicken breed has feathered legs. When Black Langshan chickens are crossed with Bluff Rock chickens, which have unfeathered legs, all F1 has feathered legs. In the F2 only 24 out of 360 individuals have unfeathered legs while 336 chickens have feathered legs. (a) What type of gene interaction controls this phenotype? (b) Test your hypothesis using chi-square analysis.
In: Biology
4. Where is phylum basidiomycota found, how do they get their food, what are some examples of these fungi and what is the name of their reproductive structure called?
In: Biology