Questions
1. The development of internal male reproductive structures such as the sperm ducts and prostate gland...

1. The development of internal male reproductive structures such as the sperm ducts and prostate gland are an important role of___the primary androgen.

2. Observational studies have shown that___vitamin D is associated with a___risk of nonskeletal diseases. low; lower, high: greater, There is no link between vitamin D and nonskeletal diseases, orl ow; greater?

3. Lipids are nutrients required by the body in large quantities Therefore, lipids are called a _____.

4. A genetic mutation has altered the shape of an enzyme found within cells. The altered shape prevents the enzynge from functioning normally because a small, organic molecule called a(n) ____cannot bind to the enzymes . protein, vitamin carbohydrate, or mineral?

In: Biology

Give 2 examples of how a specific tissue affects the speed of sound as it travels...

Give 2 examples of how a specific tissue affects the speed of sound as it travels through the body. ?

In: Biology

What is the enzyme HRP? and What product indicates that there has been an antigen-antibody reaction.

What is the enzyme HRP?

and What product indicates that there has been an antigen-antibody reaction.

In: Biology

32 approximately what percent of the sunlight striking the earth is actually reflected back into space...

32 approximately what percent of the sunlight striking the earth is actually reflected back into space on any given day?

33 In the evolutionary sense, a measure of an individual organism's relative fitness is a measure of its_________

34 The light Dependent step in photosynthesis is also known as the Krebs Cycle (T / F)

In: Biology

Early gene cloning experiments involved insertion at one restriction site in the vector; for example, the...

Early gene cloning experiments involved insertion at one restriction site in the vector; for example, the insert would have and EcoRI site at each end, and he vector would be opened at an RI site prior to litigation. Under what circumstances would asymmetric cloning be desirable, with the insert having a different site at each end?

Please no pictures or handwritten responses - only typed answers.

In: Biology

Why are the most abundant elements found in our bodies not the most abundant elements found...

Why are the most abundant elements found in our bodies not the most abundant elements found in Earth's crust? (e.g., What characteristics of the most abundant elements in our bodies make them suitable for life?)

How do the structures of carbohydrates, lipids, proteins (structural and enzymatic), and nucleic acids relate to their functions? Include in your discussion a brief description of the structure of each type of molecule.

In: Biology

A) Formulate a one sentence hypothesis which states which stages of mitosis (prophase, prometaphase, metaphase, anaphase,...


A) Formulate a one sentence hypothesis which states which stages of mitosis (prophase, prometaphase, metaphase, anaphase, or telophase) will be most common to the least common. Note: A hypothesis should be written as a statement (claiming something to be true). Additionally, a hypothesis must be testable experimentally.

B) Describe your rationale for your hypothesis. Do you think all stages will have equal counts? Why or why not? If not, which stage of mitosis do you think will be most, least, etc. common in your data and why? What do you know about what happens at each stage of cell division, and how long (relatively) might that require?

In: Biology

Structural adaptation that allowed plants to grow tall?

Structural adaptation that allowed plants to grow tall?

In: Biology

Do HDR templates shelter a nuclear localization signal? Explain

Do HDR templates shelter a nuclear localization signal? Explain

In: Biology

1) Which ONE of the following is NOT TRUE about p16: a)it is an oncogene b)it...

1) Which ONE of the following is NOT TRUE about p16:

a)it is an oncogene
b)it is on the same pathway and hence seldom mutated in tumors when RB is

c)it is often mutated in cancers such as familial melanoma

d)it is encoded in the same gene locus as p19-ARF

e)It is a cyclin dependent kinase inhibitor (CKI)

2)Which ONE of the following is NOT a property of the transformed phenotype:

a)Induced by over expression of tumor suppressor genes

b)Anchorage independence

c)Infinite proliferative life span

d)Lower requirement for growth factors

e)Does not exhibit density-dependent inhibition of cell growth

3)Which ONE of the following is NOT true about DNA viruses and cancer:

a)HPV E6, HPV E7 and SV40 large T antigen are all viral oncoproteins encoded by DNA viruses

b)they encode viral oncoproteins that bind RB

c)viral oncoproteins do not originate from host genes

d)they encode viral oncoproteins that bind MDM2

4) Which ONE of the following is NOT TRUE about the JNK pathway:

a)Another name for the pathway is the stress activated pathway (SAPK)

b)JNK stands for Jun N-terminal kinase

c)It is activated by UV and osmolarity changes

d)it does not require scaffolding proteins for proper signaling

e)it is affected by phytochemicals such as resveratrol

5)Which ONE of the following is NOT TRUE about the online resources The Cancer Genome Atlas (TCGA) and cBioPortal:

a)they can help researchers understand the molecular basis of cancer

b)they can help distinguish tumor subtypes for better diagnosis

c) they allow many scientists around the world to access the data and further cancer research

d) they can help the average person diagnose themselves in the comfort of their own home

e) they can help identify genomic characteristics of tumors to improve treatment

6) Which ONE of the following statements is NOT TRUE about Ras signaling:

a)GEFs (guanine nucleotide exchange factors) convert inactive Ras to active Ras

b)Ras was identified in both the NIH 3T3 foci assay and as a viral oncogene

c)active Ras recruits Raf to the inner plasma membrane

d)~50% of Ras is bound to GTP in the active state in a normal cell

e)prenylation of its C-terminal tail is required for both wt and mutant Ras to be functional

In: Biology

1. Eggs are structured to prevent multiple sperm from fertilizing it. Discuss what those structures are...

1. Eggs are structured to prevent multiple sperm from fertilizing it. Discuss what those structures are and how they help prevent extra sperm from getting into the egg.


2. Explain where fertilization occurs in the female reproductive system. How does this lead to the rare ectopic pregnancy?


3. Sometimes people say that the theory of evolution says we humans came from chimpanzees .explain why this argument is flawed.

In: Biology

Why is it necessary for transformed plasmids to have a nuclear localization signal in order for...

Why is it necessary for transformed plasmids to have a nuclear localization signal in order for them to go into the yeast nucleus?

In: Biology

Why can't a person with type B blood (recipient) receive a blood transfusion from someone with...

Why can't a person with type B blood (recipient) receive a blood transfusion from someone with type A blood (donor)?

the recipient's anti-B antibodies will react with the donated B antigens
the recipient's anti-A antibodies will bind to the A antigens of the donated blood cells
the recipient's anti-A and anti-B antibodies will react with the donated blood cells
the recipient's anti-O antibodies will bind to the O antigen of the donated blood cells
no reaction would occur because the B-type individual does not have antibodies

Many tens of thousands of people who were seen as "unfit" were sterilized or killed by the Nazi regime to intentionally prevent them from reproducing. This is an example of:

amniocentesis
positive natural selection
positive eugenics
negative eugenics
balanced polymorphism

How is innate immunity different from adaptive immunity?

Adaptive immunity is fast and generalized; innate immunity is slow and specific.
Innate immunity targets cancers and transplants; adaptive immunity targets viruses and bacteria.
Innate immunity is fast and generalized; adaptive immunity is slow and specific.
Adaptive immunity releases cytokines; innate immunity produces antibodies.
Innate immunity is present in fetuses and children whereas adaptive immunity is only present in adults.

In: Biology

Put the following in order with respect to Antibody-Dependent Enhancement Cytokine release and wide scale inflammatory...

  1. Put the following in order with respect to Antibody-Dependent Enhancement

    Cytokine release and wide scale inflammatory response

    Antibody binds weakly to epitope on pathogen   

    Antigenic Drift Occurs

    Immune cell infection   

    Fc region of antibody binds to FcR on immune cell

In: Biology

capillaries and aveoli both have similar walls. How is the structure of each related to a...

capillaries and aveoli both have similar walls. How is the structure of each related to a common function?

In: Biology