Discuss the limitation of DNA polymerase. Make sure to include the consequence of these limitations, especially for eukaryotic chromosomes, and how these organisms have evolved to counter these limitations.
In: Biology
In: Biology
Describe how the various types of protozoans move, and give an example of each type.
What type of algae are believed to be closely related to the first plants? Why?
How might diseases like malaria, which are transmitted via mosquitoes, be affected by global warming?
Explain the difference between pollination and fertilization in plants.
What features are seen in angiosperms that are not seen in gymnosperms? How do they contribute to the success of angiosperms?
Which plant group provides the world’s major food crops of wheat, rice, and corn?
In: Biology
Did Spemann’s results support or discredit Roux-Weismann hypothesis?
In: Biology
1)Which of the following is FALSE regarding lipids?
Select one:
a. They often are polymers of fatty acids
b. They have a low oxygen to carbon content
c. They are nonpolar molecules
d. They are used solely as fuel for the body
e. They include cholesterol molecules
2) Trans fat
Select one:
a. Contribute more to cardiovascular disease than cholesterol does
b. Lower the LDL in our bodies
c. Are a form of cholesterol
d. Dissolve in water
e. Are saturated fatty acids
In: Biology
1) Which of the following is FALSE regarding nucleotides?
Select one:
a. They polymerize by linking the bases together
b. An example is dUDP
c. They contain a purine or pyrimidine
d. A nitrogenous base is bound to a sugar molecule which is bound to a phosphate group
e. They are the monomeric subunits of nucleic acids
2) Which of the following would not follow the base pair rules between DNA (left) and RNA (right)?
Select one:
a. T::A
b. A::T
c. G::C
d. C::G
In: Biology
In: Biology
Choose four items from the following list. For the four items you choose, describe their roles in skeletal muscle contraction.
List to choose from:
In: Biology
why are unsaturated fatty acids the “good” fats to have in your diet? What is the importance of unsaturated omega-3 fatty acids and unsaturated omega-6 fatty acids in your diet? What percentage of your total fat intake should be unsaturated fatty acids? What kinds of foods contain a significant amount of unsaturated fatty acids? And is it possibly to consume too many unsaturated fatty acids in your diet, and if so what are some effects that the increased amounts of unsaturated fatty acids would have on your body, likes diseases or health conditions?
In: Biology
New life form discovered bottom of the ocean. This life form uses 8 new amino acids to build proteins, with also the 20 that are already use. Also, size of their codons appears the same as ours. Which statements could be expected to be true for this life form?
Select one:
a. Protein structure will be less diverse
b. Genetic code will be more redundant so more of the codons code for the same amino acids
c. Must have less nucleotides than we do
d. the genetic code will be less redundant so less codons code for the same amino acid
e. No statements can be expected from this life form
In: Biology
Choose only one of these! Discuss the inheritance pattern, populations commonly found in, phenotypes, cellular physiology, and “molecular” stories for: Red-green color blindness, Tay Sachs, Cystic fibrosis, or Hypercholesterolemia.
Please choose one and give detailed info: Red-green color blindness, Tay sachs, Cystic fibrosis or Hypercholesterolemia.
In: Biology
hypothesis: roses watered with liquid vitamin B grow faster than roses fed with water alone?
dependent variable :
independent variable :
name several control variables :
what would be a positive control: why?
what would be a negative control: why?
In: Biology
.What does the Cry family of proteins specifically do to a target organism? Does this affect any organism that consumes the Cry protein? What is required in the host in order for this protein to be toxic?
In: Biology
Q 6-14 Multiple Choice In the space provided after the question #, record A if 1, 2, 3 are all correct B if 1 & 3 are correct C if 2 & 4 are correct D if 4 is only correct E if all are correct 6 During glucose tolerance testing: 1 The patient starts in a fasting state 2 Collection of blood is done at timed intervals 3 Used to detect hypo and hyper glycemia 4 Glucose is administered at timed intervals 7 Blood glucose: 1 Is low in hyperglycemia 2 Is elevated by insulin 3 Is not influenced by diet or exercise 4 Determinations are demonstrated most specifically by enzyme methods 8 The glucose renal threshold 1 Is the blood glucose concentration above which glucose is excreted in the urine 2 May differ slightly amongst individuals 3 Is a regulating effect that the kidney controls 4 Is most commonly exceeded in diabetes mellitus 9 Glucose determinations can be done on 1 Whole blood 2 Serum 3 Plasma 4 Cerebrospinal fluid 10 Normally blood sugar not oxidized at once for energy is: 1 Stored in the liver as glycogen 2 Stored in the muscles as glycogen 3 Converted to fat and stored in the adipose tissue of the body 4 Excreted by the kidneys 11 Hormones that have the effect of raising blood glucose concentrations is(are) 1 Growth hormone (GH) 2 Adrenocorticotropic hormone (ACTH) 3 Thyroxin 4 Insulin 12 Capillary blood specimens for glucose determination 1 Are used for point of care (POCT) home monitoring 2 Is thought of as venous rather than arterial blood 3 Is 5 mg/dL higher than venipuncture glucose 4 Must have anticoagulant added prior to testing 13 Blood obtained by venipuncture may show falsely decreased glucose concentration 1 Due to glycolysis 2 Due to enzymes present in blood cells 3 And may be avoided by storing as cell-free plasma 4 By using sodium fluoride anticoagulant 14 Sources of error when using blood glucose reflectance meters are 1 Variations in the amount of blood used 2 Washing and wiping of strips 3 Calibration of the meter 4 Using capillary blood rather than venous blood
In: Biology
In: Biology