Berkley Pit lake
1. What types of microbes would one expect to be living in such
polluted water?
2. Suggest some possible ways that microbes survive and even thrive
under such conditions.
3. Identify an environment similar to the Berkeley Pit. Describe
the environment, the pollutant and the possibility of environmental
hazard, if you think it would cause one..
In: Biology
What is the name of the part of the microscope that the objectives are attached to? (choose the best answer)
The purpose of melanocytes is to protect the other cells from becoming damaged and turning into cancer cells.
Select one:
True
False
Question 12
It is amazing that when we swim in a pool, we do not absorb the water from the pool into our bodies. Which layer of the epidermis is responsible for this?
Select one:
a. stratum basale
b. stratum spinosum
c. stratum granulosum
d. stratum lucidum
e. stratum corneum
Question 13
Which knob moves the stage up and down more quickly - the coarse focus knob or the fine focus knob?
Select one:
a. coarse focus knob
b. fine focus knob
Which of the following organ systems does the pancreas belong to:
Select one or more:
a. endocrine
b. reproductive
c. immune
d. digestive
The thumb is lateral to the middle finger.
Select one:
True
False
The elbow is distal to the wrist.
Select one:
True
False
In: Biology
What are some connections between the outputs of photosynthesis and your life, and the life of most animals on the planet?
In: Biology
1.Lipids
a.Yield less energy per gram than do carbohydrates
b.Include cartilage and chitin
c.Include fats consisting of one fatty-acid molecule and three glycerol molecules
d.Are composed of monosaccharides
e.None of the above
2.The endoplasmic reticulum
a Serves as the internal transportation system of a cell
b Is the inner membrane of the mitochondria
c Is characterized by the presence of ribosomes throughout
d Manufactures ATP
e Is found in the nucleus as well as in the cytoplasm
3.
Photosynthesis is associated with all of the following EXCEPT
a Chloroplasts
b Plastids
c Grana
d Thylakoid
e Vacuoles
4.
Which type of organelle can break down substances without oxygen and in a low pH environment?
a Peroxisome
b Lysosome
c Central vacuole
d Mitochondria
5.
Which statement is true of plasma membranes?
a They have molecules on their surfaces that identify them
b They are essentially impermeable
c They are basically static, nonchanging structures
d They are hydrophilic barriers between cells
e They function primarily through the activity of their carbohydrates
In: Biology
what are some of the most common clinical and pathological manifestations of human immunity
In: Biology
Discuss the statement that “DNA isn’t just a sequence of letters; it’s not just a script. DNA is a dynamic movie in which our experiences are being written.” How does this relate to Gottlieb’s theory of probabilistic epigenesis? 100 or more words essay
In: Biology
. Compare/ contrast (3 pts each) a. Give one characteristic that is the same between X-inactivation and genomic imprinting, then give one characteristic that is different between them. b. Give one characteristic that is the same between autosomal recessive and X-linked recessive inheritance, then give one characteristic that is different between them. c. Give one characteristic that is the same between hemophilia and congenital hypertrichosis, then give one characteristic that is different between them.
In: Biology
What is the most common mutation found in the CFTR gene? c. Sickle cell anemia is also inherited as an autosomal recessive trait. What gene is mutated to cause sickle cell anemia? (1 pt) d. Why is it advantageous for a person to be heterozygous for the sickle cell trait? (2 pts)
In: Biology
In: Biology
Influenza viruses gain entry into their host cells by attachment to N-acetylneuraminic acid residues on the cell surface, followed by receptor-mediated endocytosis. What effect would the following treatments have on attachment of the virion to a susceptible cell.
i.Treatment of the susceptible cell with neuraminidase
ii.Treatment of the susceptible cell with NH4 Cl to prevent lowering of lysosomal pH
iii. Treatment of the susceptible cell with actinomycin D, which prevents synthesis of messenger mRNA
b. What effect would these same treatments have on uncoating of the virion?
C. What effect would each of these treatments have on the burst size of an influenza infection?
In: Biology
You’ve identified an antigenic protein unique to multidrug resistant Staphylococcus aureus (MRSA). You’d like to create a MRSA vaccine based on an in vitro transcribed mRNA. Several answers will be acceptable, since there are several technical approaches to carry out the same tasks. Specifically:
(1 pt) What molecular method could you use to clone the gene from S. aureus? (Name a specific approach from earlier in the course).
(1 pt) What will be the components of your IVT mRNA itself?
(1 pt) What steps could you take to reduce the immunogenicity of the IVT mRNA?
(1 pt) What is one way you might deliver the IVT mRNA into a patient?
(1 pt) You find that the S. aureus protein is poorly expressed in human cells. How could you change your
mRNA sequence to boost ex
In: Biology
Create a table of the following skin diseases:
5) Pseudomembranous colitis
6) Hepatitis
7) Salmonellosis
8) Campylobacter diarrhea
9) Amebiasis
10) Shigellosis
11) Typhoid fever
12) Mumps
13) Viral Gastroenteritis
14) Pinworm
15) Anisakiasis
Create columns as shown below:
Name of Disease | Causative Agent(s) | Common Mode of Transmission | Pathogenesis and Virulence factors | Epidemiology | Prevention and Treatment |
In: Biology
Explain why demographic bottlenecks and invasive species are problematic for ecological restoration.
In: Biology
Which of the following produces ATP:
Select one or more:
a. glycolysis
b. transition reaction
c. citric acid cycle
d. electron transport chain
Question 2
The stomach contains 3 layers of skeletal muscle.
Select one:
True
False
Question 3
When blood enters the heart, it always first enters an atrium and then continues to a ventricle.
Select one:
True
False
Question 4
Which of the following are considered to be part of the "innate immune system"?
Select one or more:
a. fever
b. stomach acids
c. interferons
d. T lymphocytes
e. pores developing in the wall of a bactrium, causing it to burst
Question 5
The atrioventricular valve prevents blood from backflowing from the atrium into the ventricle.
Select one:
True
False
Question 6
Which part of the conduction system of the heart is considered to be the heart's pacemaker, i.e. it maintains the steady beat of the heart.
Select one:
a. SA node
b. AV node
c. Purkinje fibers
d. Bundle of His
Question 7
Platelets are pieces of the megakaryocyte cell.
Select one:
True
False
Question 8
Homeostasis is a mechanism that the body uses to balance its internal environment. There are 3 components to the homeostatic mechanism: receptor, control center and effector.
Select one:
True
False
Question 9
The following is the order of blood flow through the chambers of the heart: inferior and superior vena cava --> right atrium --> right ventricle --> pulmonary vein --> lungs --> pulmonary artery --> left atrium --> left ventricle --> aorta
Select one:
True
False
Question 10
The molecules that help the body idetify cells as "self" (i.e. not foreign) are the:
Select one:
a. antigens
b. memory cells
c. major histocompatibility complex markers
d. macrophages
Question 11
Which white blood cell is the first to arrive to the site if an infection?
Select one:
a. monocyte
b. neutrophil
c. lymphocyte
d. eosinophil
Question 12
ATP is required for troponin to move off of the myosin binding sites of the tropomyosin molecule.
Select one:
True
False
Question 13
Rigor mortis refers to the stiffening of the body when a person dies. The reason the body stiffens is because, in the contraction cycle, ATP is required for muscle to relax.
Select one:
True
False
Question 14
The main molecule that makes up the "walls" of the cell is the ________ molecule.
Select one:
a. carbohydrate
b. water
c. phospholipid
d. triglyceride
Question 15
Capillaries can be as wide as one red blood cell thick.
Select one:
True
False
Question 16
Which part of the mitochondria is said to be the site of ATP synthesis:
Select one:
a. cristae
b. outer membrane
c. cytoplasm
Question 17
This type of bone cell is responsible for building new bone tissue. It is the:
Select one:
a. osteoblast
b. osteocyte
c. osteoclast
Question 18
An autoimmune disorder is when the person's immune system has trouble distinguishing between selfand non-self. Their immune system attacks the person's own cells because it thinks that those cells are foreign when they actually aren't.
Select one:
True
False
Question 19
Where in adults does blood cell production occur?
Select one:
a. in the marrow within the medullary cavity
b. in the yellow bone marrow
c. in the marrow within the spongy bone tissue
d. in the red bone marrow
e. both c and d
Question 20
Mitochondrial diseases that are inherited are more likely to be inherited from the mother than the father.
Select one:
True
False
Question 21
Polysaccharides are made when monosaccharides are bound together through:
Select one:
a. condensation synthesis
b. hydrolysis
c. hydrogen bonding
d. an ionic bond
Question 22
Which part of the hemoglobin molecule does the oxygen bind to?
Select one:
a. globulin
b. heme disc
c. iron
d. alpha chain
e. beta chain
Question 23
What is true about asbestos:
Select one or more:
a. it causes the lysosomes to burst and release enzymes into the entire cell
b. teh lysosome cannot break down asbestos with its digestive enzymes
c. asbestos can increase your risk for lung cancer
d. it causes impaired respiratory function
e. all of the above
Question 24
Which of the following is a function of bones?
Select one:
a. it supports soft tissues
b. it allows us to move
c. it protects us, such as the skull protecting the brain
d. it can store essential minerals that the body needs to survive
e. all of the above
Question 25
The hair root can be found in which layer of the skin?
Select one:
a. epidermis
b. dermis
c. subcutaneous layer
Question 26
The use of anabolic steroids can cause the user to have a heart attack.
Select one:
True
False
Question 27
Not yet answered
Which part of the neuron would you likely find the mitochondria?
Select one:
a. axon
b. dendrite
c. nucleus
d. cell body
Question 28
Leukocytes is the technical term for a white blood cell.
Select one:
True
False
Question 29
When evaluating askin growth to see if it is melanoma, we look at 4 things: asymmetry, undefined borders, multiple mottled colors and grwoths larger than half a centimeter.
Select one:
True
False
Question 30
Where does blood get deoxygenated
Select one:
a. the heart
b. the lungs
c. tissues all over the body
Question 31
The cytotoxic T cell plays an integral role in the antibody-mediated response.
Select one:
True
False
Question 32
When new bone tissue is built, the type of cell that ultimately becomes embedded within the bone matrix is the:
Select one:
a. osteoblast
b. osteocyte
c. osteoclast
In: Biology
Please keep answers short, but concise.
1. how do pathogens change genteically (3 mothods)
2. define epi-, en-, and pandemic disease
3. three factors that promote the spread of pandemic disease
In: Biology