BIOLOGY HIGH SCHOOL

A scientific argument will be considered invalid if the evidence supporting that argument is based ona. inconsistent data.
b. independent data.
c. unlimited results.
d. controlled results.

Answers

Answer 1
Answer: I believe the answer to this is (B) independent data. Independent data can be obtained in an uncontrolled environment and can also be biased. Scientists depend upon each other to test each others data and results, but this isn't always the case with independent data and therefor the credibility is reduced. 

The reason the other answers are incorrect is that unlimited and controlled results do not affect the validity of research, and inconsistent data means just that....that it is inconsistent and most likely requires more research or testing, but isn't necessarily wrong or invalid.
Answer 2
Answer:

Answer:

B

Explanation:

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phytoplankton are autotrophic protists that are only found near the surface of ocean water. this is because

Answers

Answer:

More sunlight is available at the surface of ocean to carry out photosynthesis.

Explanation:

Phytoplankton are autotrophic organisms and use sunlight to carry out the process of photosynthesis. Sunlight is required for photosynthesis to occur. More sunlight is available at the surface of ocean. Availability of sunlight reduces with increasing depth of water due to presence of suspended particles in water. To obtain maximum sunlight to support photosynthesis, phytoplankton are found near the surface of ocean water.
Phytoplankton require sunlight because they generate energy though photosynthesis. They do make tasty snacks for the passing aquatic organism, but not purposefully.

what happens to the thickness of the uterine lining when the level of progesterone reaches its highest level?

Answers

Answer:

Becomes thick with blood vessels passing through

Explanation:

Progesterone levels are the highest in the middle of the  luteal phase i.e at the eighth or ninth day of menstural cycle. it is the hormone which is released after ovulation. It is produced by the corpus luteum (an area created by the collapsed follicle) which consists of ovulated egg. At this stage the uterus lining gets thick and also estrogen is at high level. If the conception does not takes place the level of progesterone falls as the corpus luteum starts to break.
What happens at that point is that the lining sheds through the vagina otherwise known as the menstrual cycle which occurs if the egg has not been fertilized.

What specifically is this biochemical used for, and how is it broken down during digestion?

Answers

digestion occurs in the stomach and the duodenum through the action of three main enzymes: pepsin, secreted by the stomach, and trypsin and chymotrypsin, secreted by the pancreas.During carbohydrate digestion the bonds between glucose molecules are broken by salivary and pancreatic amylase.The digestion of certain fats begins in the mouth, where short-chain lipids break down into diglycerides because of lingual lipase. The fat present in the small intestine stimulates the release of lipase from the pancreas, and bile from the liver enables the breakdown of fats into fatty acids.DNA and RNA are broken down into mononucleotides by the nucleases deoxyribonuclease and ribonuclease (DNase and RNase) that are released by the pancreas.

How did short term catastrophic events, such as volcanic eruptions and asteroid collisions affect the climate and biosphere?

Answers

Dust particles and debris from the collision float up into the Earth's atmosphere, thus blocking the sun's rays. When volcanoes erupt, they can cause chemical clouds to linger in the atmosphere, also blocking the sun's natural rays

Which property of carbon 14 facilitates its use in dating fossils?

Answers

Answer:

When an organism dies, its carbon-14 decays back into nitrogen-14 at a known rate, called a half-life (5,730 years). By measuring the remaining carbon-14 in fossils, scientists can estimate their age, helping us understand the history of life on Earth.

Vitamins are specific organic compounds that are required in the diet to aid in digestion of :__________a) proteins.
b) provide essential amino acids.
c) prevent deficiency diseases.
d) provide fiber

Answers

Answer:

c) prevent deficiency diseases.

Explanation:

Vitamins are essential and specific organic compounds that are required mainly in the diet to facilitate the digestion of protein, however, they are not categorized with amino acids and as such they can't provide essential amino acid.

Vitamins are categorized into fat soluble vitamins(A,D,E and K) and water soluble vitamins (B anc C). Vitamins provides several to hundred of roles, majorly they helps  to prevent deficiency diseases. Few of their roles are:

Vitamin A helps to prevent blindness. Food sources to obtain vitamin A include spinach, cod liver oil etc.

Vitamin D helps to maintain skeletal structure due to the calcium content embedded in Vitamin D. Therefore, lack of vitamin D can cause rickets.

Vitamin B-complexes e.g B-1 (thiamin) helps in synthesis of certain hormones,  B-2 (riboflavin) which asssists in breakdown of fats and energy production. It can be gotten from Milk, youghurt etc. Deficiency in these vitamin B-complexes can cause heart-related disease, skin disorders, anemia etc.
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