Biology Answers

2. Hemophilia A is a sex-linked disease caused by mutations in the coagulation factor VIII gene. The F8C gene is one of the largest human genes: it contains 26 exons. On which chromosome is the F8C gene located in humans?

   - Complete the quest with:

      • Online Mendelian Inheritance in Man (OMIM)

1. Mutation of the NF1 gene in humans causes a serious genetic disease, type 1 neurofibromatosis (neurofibromatosis, type1). On which chromosome is the NF1 gene located in humans?

   - Complete the quest with:

      • Online Mendelian Inheritance in Man (OMIM)

    A DNA molecule with a length of 5000 base pairs (bp). treated separately with restriction enzymes A and B.

Restrictase A cut DNA into 4 fragments of 2100, 1400, 1000, and 500 bp. Restrictase B gave 3 fragments: 2500, 1300, and 1200 bp.

       Processing of the studied fragment simultaneously with two restriction enzymes gave 6 fragments: 1900, 1000, 800, 600, 500, 200 bp.

      A restriction map of this DNA fragment is presented. Using the restriction data of enzymes A and B, simulate restriction mapping by matching the restriction map of the DNA fragment to this map.    

The only group of algae with chlorophyll B is?

There are two alleles for every gene, then why are there only two alleles per chromosome pair when chromsome pairs consist of over 600 genes?

During her recent stay in the hospital following routine surgery, Liza contracts influenza from another patient. This infection is most specifically described as:

a. nosocomial

b. endogenous

c. exogenous

d. iatrogenic

I answered C, but i don't know if that is correct. Endogenous is an infectious that arose from the patient's own normal flora as an opportunistic infection. However, it could be B because Endogenous means they are caused by a microbe introduced to the patient while in the healthcare setting.

The number of microbes needed to cause illness in the host

A. the disease threshold

B. Minimum illness dose

C. Infectious dose

D. Minimum concentration

I believe it is minimum illness dose because the smallest amount of a drug or other microbes needed to produce a desired or specified.

Thank you so much!

Beginning to feel better

a. decline

b. convalescence

c. illness

d. prodromal period

i think its either A or B. Thank you very much!!

Beginning to feel better

a. decline

b. convalescence

c. illness

d. prodromal period

i think its either A or B. Thank you very much!!

During her recent stay in the hospital following routine surgery, Liza contracts influenza from another patient. This infection is most specifically described as:

a. nosocomial

b. endogenous

c. exogenous

d. iatrogenic

I answered C, but i don't know if that is correct. Endogenous is an infectious that arose from the patient's own normal flora as an opportunistic infection. However, it could be B because Endogenous means they are caused by a microbe introduced to the patient while in the healthcare setting.

The number of microbes needed to cause illness in the host

A. the disease threshold

B. Minimum illness dose

C. Infectious dose

D. Minimum concentration

I believe it is minimum illness dose because the smallest amount of a drug or other microbes needed to produce a desired or specified.

Thank you very much!!

Discuss the differences between humoral and cell-mediated immunity 

The negative particle is?

Below is the concentration of lactic acid in the blood of an athlete before, immediately after and one hour after completing a 400 m sprint.

Before race 25 M Immediately after race 197 M One hour after race 26 M

How can you explain the large increase in lactic acid (25 M versus 197 M) at the completion of the race?

b) You have identified a mutant yeast whose glycolytic pathway is shorter due to the presence of a new enzyme catalysing the following reaction:

Glyceraldehyde-3-Phosphate + H2O + NAD+ →

3-phosphoglycerate + NADH + H+

What would the effect of this mutation have on this mutant yeast’s ability to grow under i) aerobic, and ii) anaerobic conditions?