Questions
1-What is true of people with O blood type? A) They possess an enzyme the adds...

1-What is true of people with O blood type?

A)

They possess an enzyme the adds a phospholipid to the surface of red blood cells

B)

They possess an enzyme that adds galactose to glycolipids the surface of red blood cells.

C)

They possess an enzyme the adds N-acetyl glucosamine to glycolipids on the surface of red blood cells.

D)

They lack an enzyme that adds a sugar molecule to glycolipids on the surface of red blood cells.

2-Which of the following is true of sphingolipids?

A)

They are components of cell membranes.

B)

They are used to build cerebrosides and gangliosides.

C)

They help protect cell membranes by forming a chemically resistant outer layer.

D)

All of the above are true

3-Which of the following is true of triacylglycerol AND glycerophospholipids?

A)

Both are made from fatty acids.

B)

Both are membrane lipids

C)

Both are amphipathic lipids

D)

Both are made from isoprene units

In: Biology

Water is both a powerful force and critical to an organism’s survival. Explain how this can...

Water is both a powerful force and critical to an organism’s survival. Explain how this can be true of water, by providing a detailed example of each situation (including the chemistry aspect as needed).

There is a wide variety of survival strategies used by terrestrial organisms. Explain the difference between ectotherms and endotherms, and an example organism for each.

Many organisms live in environments that experience large changes, giving them seasons. Explain the differences between diapause, hibernation, and torpor. Provide a single organism example for each of the three terms and why that species must use this strategy.

In: Biology

You decide to do to determine the effect of used cigarette butts on water from Morses...

You decide to do to determine the effect of used cigarette butts on water from Morses Creek, NJ and how it affects the water quality index. In the lab, you set up 3 large tanks of water from Morses Creek for the control group and 3 large tanks for the experimental group.

1. What is the independent variable in this experiment?

2. Name four dependent variables that you should measure.

3. What are three controlled variables?

4. Explain how you should set up the control group tanks. Then explain how you would set up the experimental group tanks.

In: Biology

Please answer the following question in your own words. 1. The following relates to Natural Selection...

Please answer the following question in your own words.

1. The following relates to Natural Selection and the theory of evolution:

A. How is natural selection related to gene flow, how is it related to genetic drift, and how is it related to mutation.

B. Write a 7 sentence summary discussing how has the theory of evolution contributed to your understanding of humans as a biological species.

  

In: Biology

According to their calculation of theta, the long term mtDNA Ne= 5000. Now assume that a...

According to their calculation of theta, the long term mtDNA Ne= 5000. Now assume that a single African mtDNA lineage migrates from Africa to European Neanderthals. How many years will it take before this single mtDNA lineage would fix in the Neanderthalhals population? Assume 30 years per generation.

In: Biology

Question is: A man produces his alleged girlfriend’s medical documents which include a diagnosis of “vulvovaginitis”...

Question is: A man produces his alleged girlfriend’s medical documents which include a diagnosis of “vulvovaginitis” with the saline wet mount lab results showing flagellated protozoa. What is the likely diagnosis of the man? Explain your diagnosis.

In: Biology

what is the best the best kind of media (agar or broth medium) to use for...

what is the best the best kind of media (agar or broth medium) to use for identification of the following bacteria:

  1. Staphylococcus aureus
  2. Escherichia coli
  3. Streptococcus pneumoniae

Examples of possible media choices may include: TSA, TSIA, MSA, MacConkey, Blood Agar, EMB, SIM, MR-VP, etc.

Also, provide reasoning behind each selection. Also list if each of the media used are selective and/or differential. What observable changes would you expect to see from the media after a proper incubation period with each bacterial species?

In: Biology

Describe the relationship of yeast and humans?

Describe the relationship of yeast and humans?

In: Biology

Reverse Transcriptase (RTase) is an enzyme found in HIV. What is the function of this enzyme...

Reverse Transcriptase (RTase) is an enzyme found in HIV. What is the function of this enzyme in HIV’s life-cycle? What are some uses of RTase for human applications?

In: Biology

How can you tell when you have adequately species diversity? Explain your answer.

How can you tell when you have adequately species diversity? Explain your answer.

In: Biology

What is the unusual about fungal mating strategies -- what unique type of ploidy do they...

What is the unusual about fungal mating strategies -- what unique type of ploidy do they have?

In: Biology

Explain five pieces of evidence that supports the gradualistic mode of an evulotionary trend?

Explain five pieces of evidence that supports the gradualistic mode of an evulotionary trend?

In: Biology

Explain five pieces of evidence that supports the punctuational mode of an evolutionary trend?

Explain five pieces of evidence that supports the punctuational mode of an evolutionary trend?

In: Biology

1. As a molecular biologist, you have been asked to design a liposome (artificial cell). The...

1. As a molecular biologist, you have been asked to design a liposome (artificial cell). The purpose of the liposome is to carry drug to the inner linings of the stomach cells, which are cancerous. How would you design the liposome? Most specifically, what should be the biochemical properties of the cell membrane of the liposome?

2. Name and describe three functions of the cell membrane

3. explain and justify the importance of the cell membrane’s fluid mosaic model.

In: Biology

1) List 5 adaptations that allow plants to live in relatively dry conditions. What is the...

1) List 5 adaptations that allow plants to live in relatively dry conditions. What is the order in which these evolved?

2) List two of the earliest adaptations plants developed to live on dry land. Why were these first adaptations, coming before vascular tissue, roots, or leaves?

In: Biology