In: Biology
Offer three examples of how culture and socialization interact with ecosystems?
In: Biology
A white, disc-shaped squash crosses with a yellow, sphere-shaped squash and gives 29 white, disc-shaped; 26 white, sphere-shaped; 25 yellow, disc-shaped; and 24 yellow, sphere-shaped. If the white, disc-shaped parent is self-fertilized, what fraction of its offspring will be yellow, sphere-shaped?
In: Biology
Virus structure and function
a.What are the main structural components of a virus?
b.What does it mean to say that a virus shows host specificity (host range)?
c.What structural feature(s) help with host specificity?
In: Biology
About utilization of fatty acids to generate ATP, which of the following is INCORRECT?
a). It is first activated by ATP to form fatty acyl-CoA in the
cytosol
b). Fatty acyl-CoA needs carnitine acyltransferases to translocate
to mitochondria c). Each round of beta-oxidation releases 1 acetyl
CoA, 1 NADH and 1 NADPH
d). The translocation process is repressed by high levels of
insulin
e). it is repressed by active fatty acid biosynthesis
16. Biosynthesis of fatty acids in mammalian hepatocytes needs NADPH. In addition to pentose pathway, which of the following biochemical processes can provide additional NADPH for biosynthesis?
a) An alternative glycolytic pathway, ED pathway, generates
NADPH b) Malic enzyme-catalyzed dehydrogenation of malate
c) Dehydrogenation of pyruvate in cytosol
d) β-oxidation of fatty acids in the cytosol recovers NADPH
e) Dehydrogenate citrate in cytosol
17. Assume a type of lipase identified in adipose tissues which can be activated by an unknown hormone. Upon activation, it releases fatty acids into circulation as fuel supply. Functionally, this hormone is unlikely to be:
a). glucagon b). insulin
c). epinephrine d). T3
e). T4
18. Pancreas is important for metabolism because it produces the following, EXCEPT for:
a). insulin
b). glucagon c). lipases
d). thyroids e). proteases
19. Which of the following pathway in skeletal muscle will not be stimulated by AMPK?
a). glycogenolysis
b). glycolysis
c). gluconeogenesis
d). beta-oxidation
e). krebs cycle
30. Which one is a cofactor needed for the glycogenolysis?
For questions 37-40, refer choices given below:
a). Glut1 b). Glut2 c). Glut3 d). Glut4 e). SGLT
37. The one whose cell surface localization is enhanced by
insulin signaling pathway is?
38. Which one is expressed abundantly on neuronal cells?
39. Which one has a large Km and expressed mainly in hepatocytes
and pancreatic alpha/beta-cells? 40. Which one is abundantly
expressed in red blood cells to ensure supply of glucose to
erythrocytes?
In: Biology
summarize steps that people can take to live a more sustainable lifestyle and what major changes should be made in their lives to live more healthfully when it comes to nutritional choices.
In: Biology
A true breeding swan flower plant with smooth petals is crossed with a true breeding swan flower plant with constricted petals. The offspring of this cross all have smooth petals. This indicates that
1) the offspring do not have a constricted allele in their genotype
2) smooth petals are dominant and constricted petals are recessive
3)constricted and smooth petals are not controlled by alleles
4) the F2 generation will have all smooth petals
5) constricted petals are dominant and smooth are recessive
In: Biology
Match each of the following marine organisms with their identifying characteristics. Two of them are wrong.
baleen whales large filter feeders
echinoderms spiny skin
red algae microalgae that can cause red tide toxic bloom
dinoflagellates complex life cycles with multiple stage
diatoms have silica (glass) shells
crabs and lobsters decopods (have 10 legs)
manatee herbivorous marine mammal
mangrove intertidal zone tree
sponges structurally simple animal that filters water
anemones and medusae have stinging cells on their tentacles
snails and sea slugs have a muscular foot, eat with radula
mussel and clam mollusks with 2 shells
hermit crab crustacean that lives in a snail shell
hagfish and lampreys jawless fish
sharks skeleton of cartilage, not bone
tuna, salmon or anchovy bony fish with ray fins
leatherback sea turtle marine reptile returns to land to lay eggs
In: Biology
In: Biology
Regarding ATP/AMP concentrations in the cell:
a. Upon ATP hydrolysis, why might the AMP increase affect the cell more than the ATP decrease?
b. What role does AMP kinase play?
c. What pathways would be activated by high ATP/low AMP, energy producing or energy storage?
d. What pathways would be activated by low ATP/high AMP, energy producing or energy storage?
In: Biology
clinical definition of microcephaly? other causes? Answer in 200 or more words in an essay please
In: Biology
What structural/organizational characteristic of an operon ensures that the genes contained in the operon will be coordinately controlled?
In: Biology
1. Discuss the role of psychoneuroimmunology in medical diagnostics and in our daily lives.
2. Briefly discuss the role of the complement system in disease and diseases associated with complement deficiencies.
In: Biology
How would the respiratory mechanism respond to acidosis? Alkalosis? What of renal mechanism?
In: Biology