BIOLOGY HIGH SCHOOL

Question from Campbell Biology Chapter 16:42) Which of the following represents the order of increasingly higher levels of organization of chromatin?
A) nucleosome, 30-nm chromatin fiber, looped domain
B) looped domain, 30-nm chromatin fiber, nucleosome
C) looped domain, nucleosome, 30-nm chromatin fiber
D) nucleosome, looped domain, 30-nm chromatin fiber
E) 30-nm chromatin fiber, nucleosome, looped domain

Answers

Answer 1
Answer: B) looped domain, 30-nm chromatin fiber, nucleosome 
C) looped domain, nucleosome, 30-nm chromatin fiber 

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Lyme disease is a bacterial infection transmitted to humans from ticks. which of the following approaches would be the most effective to treat lyme disease

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 Lyme disease is caused by the bacterium Borrelia burgdorferi and is ... to humansthrough the bite of infected blacklegged ticks I hoped i helped

The density of gas particles in a section of Earth’s atmosphere decreases. Which of the following is the most likely explanation for this event?The air pressure in that section of Earth’s atmosphere decreased.
The air pressure in that section of Earth’s atmosphere increased.
The total number of gas particles in Earth’s atmosphere decreased.
The total number of gas particles in Earth’s atmosphere increased.

Answers

As altitude increases, temperature decreases. What is the relationship between atmospheric pressure and the density of gas particles in an area of decreasing pressure? As air pressure in an area decreases, the density of the gas particles in that area decreases.

Urban landfills use procedures that increase the decay rate for most trash. accelerate the process by which aluminum is recycled. decrease the decomposition rate for newspapers. increase the number of aerobic bacteria. make it cost effective to recycle glass.

Answers

I'm assuming that the choices are the ways urban landfills use to increase decay rate for most trash? If so, then the answer would be 'increase the number of aerobic bacteria'. Increasing the number of aerobic bacteria increase the decay rate for most trash.

Answer:

C.Recycling glass is an energy-saving practice.

Explanation:

Brain evolved in the lineages before the evolution of
fishes.
A. True
B. False

Answers

Yes, brain is involved in the lineages before the evolution of fishes

A. True ✓

Final answer:

The statement is true. The evolution of the brain predates the evolution of fishes.

Explanation:

The statement that the brain evolved in the lineages before the evolution of fishes is true.

The evolution of the brain can be traced back to earlier lineages, such as invertebrates like worms and insects. These organisms had simple nervous systems that gradually evolved into more complex structures. As vertebrates evolved, the brain became more sophisticated, with different regions responsible for various functions.

Fishes, being vertebrates, have brains that are more advanced compared to invertebrates. However, they are not the first organisms to have evolved brains. The evolution of the brain predates the evolution of fishes.

Learn more about evolution of the brain in relation to fishes here:

brainly.com/question/32901492

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2) We wish to test if a certain vaccine developed for a disease is effective ornot. What is the best way to do this?
A. Vaccinate 100 animals and expose all 100 to the disease.
B. Vaccinate 100 animals and expose 50 of them to the disease.
c. Vaccinate 50 animals, do not vaccinate 50 other animals, and expose all 1
to the disease.

Answers

Answer:

The right and most effective answer according to me is c

The bolus is liquefied in the ______ and it is now called chyme.A) esophagus
B) stomach
C) small intestine
D) mouth

Answers

Answer:

B) Stomach

Explanation:

A bolus is a food and saliva mixture formed in mouth during the first phase of digestion (chewing). After the mechanical and chemical breakdown of the bolus, chime is formed in stomach and then expelled through the pyloric valve, into the duodenum (the extraction of nutrients form chyme begins here). Chyme is semi-fluid mass with pH about 2 and it consists of partially digested food, water, HCl, and various digestive enzymes.
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