Questions
explain the oxygen-rich blood in the umbilical veins of a human and a pig fetus.

explain the oxygen-rich blood in the umbilical veins of a human and a pig fetus.

In: Biology

1. How would polyploidy and genome size affect the amount of DNA that can be extracted...

1. How would polyploidy and genome size affect the amount of DNA that can be extracted from an organism?

2. What was the purpose of using the a) detergent and b) alcohol to extract DNA?

In: Biology

Which of the following is not a function of mitosis? ​A) Tissue repair ​B) Production of...

Which of the following is not a function of mitosis?
​A) Tissue repair
​B) Production of gametes, i.e., egg and sperm cells
​C) Growth and development of a multicellular organism
​D) Cell reproduction
Suppose that in some species the haploid number of chromosomes is 14. How many chromosomes would be found in ​the zygote (fertilized egg cell)?
​A) 14​​​​B) 7​​​C) 2​​​D) 28
Which of the following is true about the process of crossing over of chromosomes?
​A) It ensures that replication of the chromosomes is as error-free as possible
​B) It acts to ensure that the gametes that result from meiosis are all genetically alike
​C) It increases the genetic diversity of gametes by creating chromosome types that are not identical to any maternal or ​​paternal types
​D) It can only occur at certain fixed locations on chromosomes
During the first part of meiosis, chromosomes perform a process known as independent assortment. What happens ​during independent assortment?
​A) Chromosomes line up in double file, with all maternal types in one line and all paternal types in a second line
​B) Chromosomes line up in single file in the middle of the cell
​C) Chromosomes are replicated and joined at the centromere
​D) Chromosomes line up in double file, with maternal and paternal types randomly distributed
In meiosis, cells undergo ________ round(s) of cell division to produce ________ offspring cells, while in mitosis ​cells ​undergo ________ round(s) of cell division to produce ________ offspring cells..
​A) 2; 4; 1; 2
​B) 2; 2; 1; 4
​C) 4; 2; 2; 1
​D) 1; 2; 2; 4

In: Biology

A couple has three children, a normal boy and a boy and girl each with hemophilia....

  1. A couple has three children, a normal boy and a boy and girl each with hemophilia. What can you say       about the parents?

In: Biology

Discuss artificially acquired active immunity. Give at least 5 reason why or why not vaccines are...


Discuss artificially acquired active immunity. Give at least 5 reason why or why not vaccines are a good solution for controlling infectious diseases.

In: Biology

MAPK pathway, TLR pathway, PPAR gamma signalling . 1.Pick one pathway and determine what process(es) does...

MAPK pathway, TLR pathway, PPAR gamma signalling

.

1.Pick one pathway and determine what process(es) does this pathway regulate and which class does this pathway belong to?

2.How is a signal transmitted from cell surface to nucleus, are second messengers involved, what kind of molecular interactions are involved? (e.g. phosphorylation, dimerization etc.)

In: Biology

these extant primates have the greatest amount of sexual dimorphism, with males being 4 times the...

these extant primates have the greatest amount of sexual dimorphism, with males being 4 times the weight of females?

Gorillas

cebids

Humans

Lemurs

In: Biology

You wish to develop an antitoxin therapeutic. Your plan is to create a molecule which will...

You wish to develop an antitoxin therapeutic. Your plan is to create a molecule which will inactivate the ability of the toxin to penetrate the cell membrane, thus preventing the toxic effects. You decide to base the therapeutic on an aptamer design. a. What is an aptamer (5 pts) b. How would an aptamer function to protect the cell from the toxin

In: Biology

Tay-Sachs disease (TSD) is an inborn error of metabolism that results in death, often in early...

Tay-Sachs disease (TSD) is an inborn error of metabolism that results in death, often in early
childhood. A phenotypically normal couple is considering having a child. The male had a female
first cousin on his father’s side that died from TSD. The female had a maternal uncle with TSD.
There are no other known cases in either of the families and none of the matings has been
between related individuals. Assume this trait is very rare.
a. Draw a pedigree showing the relevant individuals. Using defined symbols, show the
genotypes of the relevant individuals.
b. Calculate the probability that the male and female in question are carriers for TSD.
c. What is the probability that neither of them is a carrier?
d. What is the probability that one of them is a carrier and the other is not?

In: Biology

Define Cellular Respiration and Aerobic Respiration.Discuss the process of Glycolysis, Krebs Cycle and The Electron Transport...

Define Cellular Respiration and Aerobic Respiration.Discuss the process of Glycolysis, Krebs Cycle and The Electron Transport Chain. Outline each step in detail.What is the significance of these processes in microbial growth?

 

In: Biology

1.The purpose of the indole test is to differentiate groups of gram-negative, lactose-fermenting bacteria called___________ ....

1.The purpose of the indole test is to differentiate groups of gram-negative, lactose-fermenting bacteria called___________ . This specific test allows to identify bacteria that are capable of hydrolyzing the amino acid___________ . This is achieved by detecting the presence of the enzyme___________

2.Which of the following products are made from this hydrolysis reaction? (select all)

You can select more than one option

A.Indole

B.Oxygen

C.Ammonia

D.Pyruvate

E. Glucose

F.Carbon Dixoide

G. Citrate

Glucose

F

Carbon dioxide

In: Biology

What are some adaptive traits for tigers what are some adaptations of a tiger

What are some adaptive traits for tigers


what are some adaptations of a tiger

In: Biology

Term paper on the evolution of artificial sweeteners and their effect on cancer.

Term paper on the evolution of artificial sweeteners and their effect on cancer.

In: Biology

What is the principle of Genome-Wide Expression Patterns Analysis using PCR and how DNA chip can...

  1. What is the principle of Genome-Wide Expression Patterns Analysis using PCR and how DNA chip can be used in this process.

In: Biology

16. In peas, tall plants (T) are dominant to short (t) and purple (P) is dominant...

16. In peas, tall plants (T) are dominant to short (t) and purple (P) is dominant to white flower color (p). What are the phenotypes of cross between ttPp and TtPP?

In: Biology