Biotechnology is best defined as __________.

a the science that involves using living organisms to produce needed materials
b the practice of using technology in science experiments
c the use of technology to solve medical problems in living organisms

Which of the following tools of biotechnology do investigators use when trying to connect a suspect with a crime?

a RNA polymerase
b DNA fingerprinting
c plasmids
d recombinant DNA

. Which of the following will a bacterium produce when a human gene is added to its genome?

a human carbohydrates
b a protein made up of both human and bacterial properties
c human plasmids that can be isolated from the bacterium
d the human protein coded for by the human gene

What is the name of the genetic engineering in which DNA that produces human insulin is joined with the DNA of a different organism and the new merged DNA is introduced into a third rapidly multiplying organism, which then manufactures large quantities of human insulin?

– Somatic cell modification
– Somatic genetic engineering
– Gene splicing
or
-Germline gene therapy

Please tell me how to solve this:
Solve for a,b,c in the following question:
2(a,3,c) + 3(c,7,c) = (5,b +c,15)

Thanks

1) manufacture of a new strand of DNA complementary to an old strand of DNA

2) manufacture of a strand of RNA complementary to a strand of DNA

3) modification of a strand of RNA prior to the manufacture of a protein

4) manufacture of a protein based on information carried by RNA

5) manufacture of two new DNA double helices that are identical to an old DNA double helix

Which one is correct?? Thanks TONS!!

I just started learning about linear algebra and vectors and there are some facts and practice questions I don’t quite get, it’s chapter one :
1) are all vectors orthogonal to another (not zero) vector in R^3 (3-D) constrained in a straight line or a plane? (having trouble visualizing)
2) if I let u = a unit vector, then P = proj u (v) would be (v*u)u ?
my * means dot product not multiplication
3) now I’m having trouble convincing myself with dot products
let c = any constant and then let x and y and z= vectors
can I do this all the time? (cx)*(cy) = c(x*y)
and would this always be true? (x*y)*z = x*(y*z)
and last question: if I had 2y – 3z = y*z where y and z are vectors, not variables, then is it actually possible to solve for y?
Thanks a tonne if someone can help me! even if it’s just a little!

1.All cells use ATP as an immediate source of energy.
2.Heterotrophs convert the nutrients they absorb into glucose and, through cellular respiration, transfer the energy in glucose
3.Chlorophyll molecules are embedded within mitochondrial membranes.
4.Sun plants photosynthesize best at light intensities
5.Anaerobic cellular respiration does not use oxygen, and produces large amounts of ATP.
6.In anaerobic respiration, pyruvate molecules formed in glycolysis are transported into the matrix of mitochondrion
7.Mitochondrial DNA allows mitochondria to reproduce
8.In lactate fermentation, an enzyme called pyruvate decarboxylase removes a carbon dioxide molecule from pyruvate.
9. In winemaking, the grape juice bubbles as yeast cells release carbon dioxide has and ethanol during fermentation
10.During strenuous excercise, lactate fermentation occurs in muscle cells because glucose is being broken down faster than oxygen can be delivered.
11.Animals carry out photosynthesis and cellular respiration because they contain chloroplasts and mitochondria.
12. Animals use carbon dioxide for photosynthesis and plants give off carbon dioxide as a waste product of cellular respiration.

1. Describe the operation of bacterial flagella and how it changes during a behavior such as chemotasis.
2. State how photosynthesis in cyanobacteria and prochlorophytes differs from that of other bacteria.
3. Describe the metabolism of a sulfur bacterium and the conditions that promote or inhibit the growth of these bacteria.
4. Summarize the ecological significance of prokayotes, including their roles in food production, nitrogen fixation, nitrification and decomposition.
5. Explain what is meant by bloom of cyanobacteria, list some factors that can cause such bloome, and describe measures to prevent them.
6. List the 3 main shapes of bacteria, give their Latin names.
7. Give some examples of the use of bacteria in the food production.
8. Describe the difference between bacterial endotoxins and exotoxins; and state their roles in disease.
9. Explain how drug resistance arises in bacterial populations, including the roles of natural selection and the plasmid transfer.
10. State what the normal microbiate of an animal is, and list 3 reasons why it is important to animals.
11. Give the evidence for indosymbiant theory of the mitochondria and plastids.

Even if you can only answer 1 of these would be a great help… please.. For the one who can answer all of these correctly would be my choice for best answer… please and thank you…

I firmly believe that our soul is in our feces. I think each time we poop, we lose part of our life force, ATP, or soul. I would like to preserve my energy. Upon isolation of my feces, I think salting followed by a deep freeze would be the optimal preservation method. Do you think the ion concentration from the salt and extreme temperature change will damage the DNA? I know from my graduate work, that if you freeze cells too quickly the water in the cells can burst the outer membranes. Do you think salting then a slow freeze would be best? What would be the best salt to use? I was thinking a mixture of Ca(OH)2, NaCl and KI salts. Thank you.

how many different linear combinations of the three vectors u = (1,2), v = (1,1), and w = (2,1) will produce b = (0,1) ? And what are two of these combinations?

All i have so far is that u – v = b.
not sure if that’s right though