Questions
What two types of bio molecules (of the four major classes) show oxidative damage when exposed...

What two types of bio molecules (of the four major classes) show oxidative damage when exposed to the combination of metformin and dichloroacetate when treating breast cancer cells?

In: Biology

Offer three examples of how culture and socialization interact with ecosystems?

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...

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...

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

which one is worst Alzheimer’s or dementia?

which one is worst Alzheimer’s or dementia?

In: Biology

About utilization of fatty acids to generate ATP, which of the following is INCORRECT? a). It...

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...

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...

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....

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

How would changes to the way fish adjust their swim bladder be an advantage? What new...

How would changes to the way fish adjust their swim bladder be an advantage? What new niches could they fill?

In: Biology

Regarding ATP/AMP concentrations in the cell: a. Upon ATP hydrolysis, why might the AMP increase affect...

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

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...

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...

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?

How would the respiratory mechanism respond to acidosis?  Alkalosis? What of renal mechanism?

In: Biology