Approximately 99% of the microbes in the intestines are obligate anaerobes. We have plenty of blood vessels that can bring oxygen to the tissues of the intestines. Why would there be obligate anaerobes within these areas? A. The bacteria in the intestines are protected from exposure to the oxygen in the tissues by the lining of the intestines. B. The bacteria consume all the oxygen in the tissue areas brought by the blood vessels, creating an anaerobic environment. C. While the blood vessels supply oxygen to the tissues of the intestines, the inner area where the bacteria reside is NOT supplied with blood/oxygen. Since it's deep within our bodies, there's no chance for oxygen to get into these inner areas of the intestinal tube, creating a highly anaerobic environment. D. The aerobic microbes are outcompeted for nutrients in these areas by the anaerobic microbes.

Answers

Answer 1

Answer:

Answer:

The correct answer is option C.

Explanation:

The human gastrointestinal microbiota or the gut microbiota or the gut flora refers to the microbes, which thrive in the digestive tracts of humans. The human gastrointestinal tract comprises the gathering of all the genomes of gut microbiota. It is the niche where the human microbiota is found.

The microbial composition of the gut microbiota differs across the digestive tract. In the small intestine and stomach, very small species of bacteria are found, while the colon comprises the densely populated microbial ecosystem. Of these over 99 percent of the bacteria found in the gut are anaerobes, as the space within the intestines is highly anaerobic.

These microbes are confined deep within the body where oxygen cannot reach as it is not supplied with the help of blood vessels. Thus, a highly anaerobic environment is witnessed deep within the intestinal regions.

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Over a period of several years, a large hospital kept track of the number of births of babies displaying the trait achondroplasia. Achondroplasia is a very rare autosomal dominant condition resulting in dwarfism with abnormal body proportions. After 120,000 births, it was noted that there had been 27 babies born with achondroplasia. One physician was interested in determining how many of these dwarf babies result from new mutations and whether the apparent mutation rate in his area was higher than normal. He looked up the families of the 27 dwarf births and discovered that 4 of the dwarf babies had a dwarf parent. What is the apparent mutation rate of the achondroplasia gene in this population? Is it unusually high or low?
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Which of the following statements regarding angiotensin II is(are) correct? I. Angiotensin II is a hormone that is secreted by the kidneys.II. A well-hydrated person is likely to have higher blood levels of angiotensin II than a dehydrated person. III. Angiotensin II helps to slow the rate at which urine is produced. IV. A class of drugs known as ACE inhibitors promote (enhance) the formation of angiotensin II.

Actin, myosin, and troponin are:A) ligaments
B) tendons
C) muscle protein
D) bones
E) types of ligaments

The connective tissue holding bone to bone is a;
A) tendon
B) muscle
C) smooth muscle
D) ligament
E) A and D

Answers

Answer:

1. C: muscle protein

2. D: ligament

1. Actin and myosin are proteins that form contractile filaments of muscle cells. Troponin regulates muscular contraction and is found in skeletal and cardiac muscle fibers.

2. Tendons connect muscle to bone. Muscles provide movement. Smooth muscles behave involuntarily. Ligaments connect bone to bone.

Question 1 (1 point)Which sequence best orders ecological categories from the one with the fewest number of individuals to the one with the greatest number of
individuals?
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ecosystem, population, community, biome
biome, population, community, ecosystem
population, community, ecosystem, biome
community, biome, population, ecosystem

Answers

Population, community, ecosystem, biome is the order of the individual numbers.

Explanation:

A population is defined as the group of same species in a particular area that live together and depend on same kind of food with same reproductive habits.

The community is defined as the collection of all the living organisms in a particular region. All the different species residing in a particular habitat is considered as the community.

The ecosystem consists of the both living and the non living objectsorganisms in a particular region. All the living organisms as well as the soil, rock, wind etc forms the ecosystem of a region.

The biome is defined as the large geographical region where the different organisms reside and it also gives an idea about the geographical features of the region.

Plants use photosynthesis to turn sunlight, air, water, and nutrients into food energy is it true or false

Answers

It is true because through Photosynthesis plants catches solar energy

ATP hydrolysis _______.to ADP and Pi is the most common mechanism for transferring free energy to drive endergonic reactions

would be more exergonic if phosphate did not have resonance structures

results in products that are less solvated than the ATP

is usually in the form of ATP -> ADP Pi or ATP -> AMP PPi

Answers

Answer:

The correct answer is to ADP and Pi is the most common mechanism for transferring free energy to drive endergonic reactions.

Explanation:

Many endergonic reactions(the free energy change of these reactions are highly positive) proceed in a thermodynamically unfavorable manner.

To make those reactions thermodynamically favorable,these reactions are coupled with hydrolysis of high energy compound such as hydrolysis of ATP to ADP and Pi.

As a result the free energy change of those reactions becomes negative which allow those reactions to proceed in a thermodynamically favorable manner.

ASAP PLEASE!!!!! Activation energy is the energy required to _____. A. complete a chemical reaction

B. start a chemical reaction

C. produce a catalyst

D. produce the reactants

Answers

Answer:

Option B is correct.

B. start a chemical reaction

Explanation:

Activation energy is the amount of energy that is needed to start a chemical reaction. To start a chemical reaction we have to provide this amount of energy. Different type of catalyst are used to lower the activation energy and catalyze the reaction.

Final answer:

Activation energy refers to the energy needed to initiate a chemical reaction, making 'B. start a chemical reaction', the correct answer to the question.

Explanation:

Activation energy is the amount of energy required to start a chemical reaction. It's the necessary energy to break the initial bonds of the reactants in a chemical reaction. Without adequate energy to pass this threshold, the reaction cannot proceed. For example, the energy required to start a fire (the reaction) is the heat from a match or lighter (activation energy). Once this energy threshold is surpassed, the reaction continues until the reactants are used up or another factor stops it. Hence, the correct answer to your question is B: start a chemical reaction.

Learn more about Activation Energy

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A large section of the lower troposphere with uniform temperature and humidity is called _______.A. a hurricane

B. a hemisphere

C. a pressure gradient

D. an air mass

Answers

Answer:

D. an air mass

Explanation:

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