Write down the equation for the production of NADPH and Ribose-5-P in the Pentose Phosphate Pathway(PPP) and the PPP's biological significance :)
In: Biology
You have been cultivating snapdragons in your garden and allowing plants to re-germinate each year from seeds dropped by the previous year’s annual plants. You know that white flowers are recessive and count 9 white flower plants out of 100 that you examine. Do you find evidence for evolution acting in your population? If yes, could natural selection be involved?
Can we calculate using HWE here or we can't because if we calculate q^2 then we are assuming the population is in HWE. I was also thinking along the lines that if we calculate q , it wouldn't only be for homozygous recessive but also for heterozygous, thats why we can't know what proportion of q is homozygous recessive and thus compare it to original number of white flowers to see if evolution is happening. please tell me if this is correct or wrong.
AND PLEASE DONT ANSWER IF YOU AREN'T 100% SURE OF THE SOLUTION. ive seen answers to this question on chegg and im sure it ISNT correct. Thanks, ill definitely give you a thumbs up!
In: Biology
1. A vaccine to COVID-19 is perhaps the best way to end the pandemic. Please answer the following questions in a way that you might explain it to an intelligent patient who is asking the following questions.
a. What is a vaccine?
b. How will a vaccine help to prevent me from getting COVID-19?
c. There are more than 90 vaccines being developed against COVID-19. Three types of vaccines currently being investigated for COVID-19 are a subunit vaccine OR a RNA vaccine OR an inactivated vaccine. Choose one and explain what it is.
In: Biology
If I conditionally knockout FGF8 in the somatic and lateral plate mesoderm of a mouse during the onset of limb bud formation what would the resulting phenotype look like? What about if I knocked out Shh instead?
In: Biology
In: Biology
4. After performing a Gram stain on a Gram negative bacteria, the specimen shows purple bacteria. Which of the following best explains why this occurred? A. Crystal violet was not used B. Decolorizer was not used C. The specimen was not heat-fixed D. Safranin was not used
5. Which of the following pieces of evidence could support the endosymbiotic theory if found in some eukaryotes? A. Presence of 80S ribosomes B. The presence of formylated methionine C. Genes that allow for multiple origins of replication D. Gene for expressing reverse transcriptase
6. A animal cell placed into a isotonic environment will: A. Not change noticeably B. Lyse C. Shrivel D. Will “puff up” and swell but not lyse
7. Which of the following correctly demonstrates the streaking method to obtain single colonies? Answer: 5. A researcher wishes to decrease the reactivity of an enzyme. Which of the following can she do? A. Increase temperature B. Add an allosteric activator C. Add an allosteric inhibitor D. Add a competitive activator
8. What kind of oxygen requirement does the culture in the figure MOST likely have? A. Microaerophile B. Facultative anaerobe C. Obligate aerobe D. Obligate anaerobe 7.
10. Which of the following could NOT explain why a streaked plate did not yield single colonies? A. The inoculation loop was flamed before streaking B. The plate was contaminated C. After the first quadrant was inoculated, all following quadrants were streaked from the first quadrant D. The inoculation loop was not flamed after the initial inoculation
11. You have recently identified a new toxin. It is produced by a gram-negative bacterium. It is has a lipid portion, and heat stable. Based on these characteristics, how would you classify this toxin? A. superantigen B. endotoxin C. exotoxin D. A-B toxin
In: Biology
Review the osteoporosis. Make a personal assessment and formulate 8 or more strategies to improve the future health of your bone health.
In: Biology
What outputs of the light dependant reaction does not go into the light independant reaction. how are they produced and where do they go after being produced?
In: Biology
Cystic fibrosis is caused by a recessive allele. (Use "N" to stand for the normal, non-disease allele). If parents that are both heterozygous for cystic fibrosis have a child, what is the percent chance that the child will have the disease?
In: Biology
The best way to describe genetic diversity in humans is by describing it as a geographic component of ancestry. That is, human populations gradually change in their allele frequencies in many cases with high geographic precision. This actually makes any differentiation or split into groups very hard.
Is this statement true or false?
In: Biology
In otherwise normal, intact (not leaky), coupled mitochondria supplied with succinate and ADP, if you add the uncoupler CCCP:
a. What happens to electron- transport (works/stops)? Why?
b. What happens to oxygen consumption (works/stops)? Why?
c. What happens to proton pumping (works/stops)? Why?
d. What happens to ATP synthesis (works/stops)? Why?
In: Biology
Biotechnology (Online genetic testing services, GMOs in food debate)
What are the main arguments for and against using genetically modified foods and getting DNA testing online?
In: Biology
Match the vocabulary for Evolution: Species, Populations, Heritable Variation, Adaptations
A) Genetic differences in individuals within a population that can be pass on
B) Groups of the same species in the same geographic area
C) Traits that increase the individuals chance to survive
D) Similar looking organisms that can mate and produce viable offspring
In: Biology
Compare and Contrast infectious diseases, food security and environmental issues in terms of mortality in Mexico and the U.S.. How and why are these countries so different in terms of these topics.
Thanks.
In: Biology