BIOLOGY COLLEGE

As your group adds to the graphic, your teacher tells you to add an example for each of the four boxes at the base. Which example would BEST fit under the first box: Physical Barrier?A) resistance chicken pox either from exposure or vaccine
B) the enzyme lysozyme present in your tears degrades bacteria
C) white blood cells rush to the site of a wound to engulf bacteria
D) exposure to antigens lead to the production of antibodies that mark cells for destruction

Answers

Answer 1
Answer:

Answer: The correct answer is B) the enzyme lysozyme present in your tears degrades bacteria.

Tears are the part of innate immunity, which is one of the two types of immune system ( innate and adaptive).

Innate immunity ( also called first line of defense) can be described as the generalized defense strategy of individual ( that is present from birth).

It includes certain physical and chemical barriers that are always ready to fight and clear pathogen.

For example- Lysozyme ( found in tears, saliva, mucus, and breast milk) degrade bacteria by breaking their cell wall and thus prevent infection.

Thus, option B) is the right answer.  

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Aristotle's ladder of nature, and the Great Chain of Being, were concepts suggesting __________. a) life evolved on other worlds and was later transported to Earth down a celestial ladder b) the accurate evolutionary view that all species are related, with each providing an evolutionary link (i.e. step in the ladder) to its immediate ancestor c) the mystical teleological view that all species were created in a fixed order, from least to most perfect d) life is a painful and purposeless experience of endless steps, but death brings release from the ladder of life
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Where is water most likely to be found in the presence of the phospholipid bilayer shown below?A. in between the layers because the tails attract water
B. above and below the structure because the heads attract water
C. nowhere because the entire structure repels water

Answers

Actually it’s B. The hydrophilic heads attract water, which would mean water can be found above or below the structure

Water most likely to be found in the presence of the phospholipid bilayer above and below the structure because the heads attract water. Option B

If you spilled a bottle of bleach in the laundry room and your mother smelled it in the living room, what would have taken place?osmosis
active transportation
cyrolysis
diffusion

Answers

Answer:

Diffusion

Explanation:

The strong smell is diffusing from one part of the home to the other.

The reason that there are Okazaki fragments during DNA replication is ultimately because:A) Some parts of the chromosome are made of RNA and different polymerases have to be used
B) Polymerases can only synthesize in the 5' to 3' direction
C) There are only enough dNTP's to support quick replication on one strand, so the other strand lags behind it
D) It is necessary to "slow down" one of the strands so that replication does not occur before cells have a chance to grow

Answers

Answer:

B) Polymerases can only synthesize in the 5' to 3' direction

Explanation:

The leading strand's directionality is 3' to 5', so polymerase has no problem with replicating this one. But the lagging strand has the opposite directionality, so the polymerase must work in the opposite direction of the replication fork.In consequence, the replication process undergoes periodic breaks, and the enzymes have to stop and start again while helicase separates both strands, resulting in the polymerization of okazaki fragments.

If a catalyst lowers the activation energy, what raises the activation energy?O heat
O a reaction
O another catalyst
O an inhibitor

Answers

Heat increases the activity of an enzyme, therefore the answer is A!

What is the definition of emblaming?

Answers

It means to protect a dead body with chemicals, drugs, etc.

Case-study.A 25 years old male with past medical history of alcohol abuse was admitted to the ED with complains of severe lower back and bilateral legs pain. He had been running twelve miles every day for two weeks using 3 lbs weights attached to each leg and 2 lbs weights attached to each arm preparing for the marathon. The other complaint was a dark color urine for two days.
What is the cause of his symptoms. Explain the mechanism.

Answers

Answer:

The lower back pain and bilateral leg pain is due to over and intense physical activity which causes stretching of ligaments and muscles resulting in back and leg pain. Such pain can be managed by limited or by reducing physical activity.  The dark color of urine is due to the presence of bile (bilirubin) in the urine. Here the patient has a past medical history of alcohol abuse. Excessive alcohol intake enhances gut permeability resulting in enhanced absorption of bacterial endotoxins. Excessive endotoxins in the liver cause damage of the kupffer cells in the liver, resulting in the release of bilirubin in the blood which ultimately passes through kidneys into the urine.

Explanation:
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