Darwin's explanation for evolution was dependent on which scientific concept?A: The ability of organisms to learn Strike B: The significance of social behaviors to survival Strike C:The existence of variations in a population D: The relationship between size and survival please help

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Answer 1

Answer: The answer is the option C: the existence of variations in a population. Darwins theorized that the variations inside a population that led to an advantage that benefited the survival hat more changes to be passed to next generations, and so after many, many generations this variation produced a new spieces. This is the tha basis of the natural selection.

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Which of the following is NOT indicated by Mendel’s experiments?(A) incomplete dominance (B) segregation (C) recessive (D) dominant (E) independent assortment
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Choose all the answers that apply. Which of the following minerals can be scratched with a fingernail? -talc
-diamond
-topaz
-quartz

Answers

The minerals can be scratched with a fingernail. Thus, option A is correct.

What is minerals?

Minerals has been defined as a substance which has natural such as coal, oil, salt which has been especially one that has been found just in the ground and some of the mineral has been also found in the food as well as drink and they are very necessary for the betterment of the health. The main feature of sedimentary rock has that they are formed in the multiple layers. Minerals has been defined as a substance which has natural such as coal, oil, salt.

The main feature of sedimentary rock has that they are formed in the multiple layers of the particles that are organic or the minerals at the surface of Earth, later followed by the process of cementation. The main feature of sedimentary rock has that they are formed in the multiple layers.The rocks are made up of more than one mineral and the size of some rocks are small or big it depends upon their constituents.

Therefore, The minerals can be scratched with a fingernail. Thus, option A is correct.

Learn more about minerals on:

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- Talc (the softest mineral on Earth)

Glucose provides energy for cells. Different cells have different mechanisms for glucose intake. Intestinal cells contain proteins that transport glucose against its concentration gradient. These proteins couple the movement of glucose to the movement of sodium down its concentration gradient. Red blood cells have transporter proteins embedded in their membranes. When bound by a glucose molecule, these proteins change shape and allow glucose to move down its concentration gradient into the cell. Based on this information, what type of transport is used for glucose in blood and intestinal cells?

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The answer is; active transport in small intestines and passive transport in blood cells

In passive transport, no energy is required to transport the glucose molecules because they spon6tanosuely move down their concenntrati0n gradient. The transport protein in the blood cell membrane only enables the molecule to pass across the hydrophobic layer of lipid in the membrane and into the cell.

In active transport, energy is required in the transportation of glucose against their concentration gradient (glucose is highly concentrated in the lumen of the intestines than in the bloodstream). Sodium/Potassium (Na+/K+) pumps play a significant role in the transport of glucose. When sodium diffuses back into the cells, they drag along glucose molecules with them across the sodium-glucose transporter protein.

Answer: active transport in small intestines and passive transport in blood cells

Explanation: It is a Passive Form Of Transport In Blood

How does anatomy provide evidence for evolution?

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Evidence for evolution is provided by homologous structures. These are structures shared by related organisms that were inherited from a common ancestor. Other evidence for evolution is provided by analogous structures. These are structures that unrelated organisms share because they evolved to do the same job.

Give one component of the Endosymbiotic Theory.

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Answer:

Eukaryotic cells evolved from prokaryotic cells.

Explanation:

The endosymbiotic theory states that some of the organelles in today's eukaryotic cells were once prokaryotic microbes. Mitochondria and chloroplasts are believed to have been developed over time.

Why is an angioplasty an incorrect treatment for an aneurysm?

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Angioplasty is the technique of mechanically widening narrowed or obstructed arteries. This is the process of putting a balloon in your arteries to widen it for blood flow. So Angioplasty would not be the best way to treat an aneurysm because an aneurysm is a bubble full of blood. Angioplasty would not work.

An angioplasty may rupture the blood vessel wall.

What type of macromolecule is the sugar fructose?

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The type of macromolecule the sugar fructose is categorized as is a carbohydrate.

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In the alternation of generations life cycle the diploid zygote grows into a sporophyte plant through a process calleda. reproduction. b. fertilization. c. meiosis. d. mitosis.

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Fats are broken into saturated fats and unsaturated fats. Which of these explains the difference between saturated and unsaturated fats?A) Saturated fats have no hydrogen in the molecule. B) Saturated fats have more carbon atoms than unsaturated fats. Eliminate C) Saturated fats have only single bonds on all the carbon atoms. D) Saturated fats have only double and triple bonds on the carbon atoms.

A primary function of cholesterol in the plasma membranes of some animals is toA) make the membrane more rigid, allowing it to resist pressure from outside the cell.B) facilitate the removal of hydrogen atoms from saturated phospholipids.C) facilitate cell-cell interactions by binding to receptors on neighboring cells.D) enable the membrane to stay fluid more easily when the temperature drops.