BIOLOGY HIGH SCHOOL

Which of the following is an example of technological progress?a. an increase in corn output resulting from genetic engineering
B) the invention of the air conditioner
C) the invention of LCD televisions
D) all of the above

Answers

Answer 1
Answer: I think the correct answer from the choices listed above is option D. An increase in corn output resulting from genetic engineering, the invention of the air conditioner and the invention of LCD televisions are all example of technological progress. They make use of the present knowledge and making advantage of it to help the lives of people.

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Glucose and amino acids move in or out of a cell by _____. passive diffusion facilitated diffusion active transport endocytosis and exocytosis
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After an egg develops in the _________, it travels through the _________, where it may be fertilized. Ovary, fallopian tube Ovary, uterus Uterus, fallopian tube Uterus, ovary B? or D? Or something else?

How do adrenaline help in dealing with emergency situations

Answers

Adrenaline helps in emergency situation by providing energy so that the major muscles of the body can respond to the perceived threat.
In danger, the brain then sends nerve impulses to the adrenal gland in the kidneys. When the nerve signal reaches the adrenal gland, chromaffin cells, in the medulla of the adrenal gland, release epinephrine or adrenaline. It then enters the bloodstream. It is thus carried around the body to cells in various locations, where it initiates several responses.
1. Adrenaline, along with another hormone called glucagon, is responsible for the breakdown of glycogen in liver cells. Glycogen is a form of energy storage. This gives energy to the muscles
2. Adrenaline effects the skin also. Restriction of the arteries is caused by the binding of epinephrine/adrenaline to some alpha-adrenergic receptors. This cuts off blood supply to the skin. This results in the contraction of the smooth muscle cells in the skin, which cause the raising of the hairs on the surface of the skin. 
3. The lungs contain smooth muscle. Epinephrine causes smooth muscles to relax. Specifically, epinephrine binds to beta-2-adrenergic receptors on bronchiole muscle cells. This allows the bronchioles to relax, which enables intensified respiration.
4. Adrenaline binds to beta-adrenergic receptors on heart muscle cells. This causes the contraction rate of the heart to increase. This ultimately leads to increased blood supply to the tissues in the body.

Establishment of communities in newly formed environments, such as volcanic lava flows or sand bars, is called __________. Development of new communities in disturbed environments, such as a burned or clear cut forest, is called __________. A. tertiary succession, primary succession B. secondary succession, primary succession C. secondary succession, tertiary succession D. primary succession, secondary succession

Answers

The right option is; D

Establishment of communities in newly formed environments, such as volcanic lava flows or sand bars, is called primary succession. Development of new communities in disturbed environments, such as a burned or clear cut forest, is called secondary succession.

Primary succession is a type of ecological succession (changes) which occurs when communities of organisms establish new habitat in areas that are not capable of sustaining life due to various events such as volcanic lava flows, sand bars, oil spills, flooding, and landslides.

Secondary succession occurs when a smaller scale disturbance such as forest fire affect a stable existing ecosystem. Such disturbances support the reappearance of life because it does not remove all organisms and nutrients from the existing ecosystem.  

Answer:

D. primary succession, secondary succession

Explanation:

Why do our eyes become red, when we cry?

Answers

Red eyes are common when it comes to crying ( tearing up ) it's mainly because our eyes dilate. Like if you were glasses and take them off.
also known as bloodshot. Or when you wake up in the morning and turn on the light. These two were examples in me explaining my answer.

i really hope this helps

Answer:Read the excerpt from chapter 7 of Night.

We all got up. We all pulled our soaked blankets tighter around our shoulders. And we tried to take a few steps, to shuffle back and forth, in place.

Suddenly, a cry rose in the wagon, the cry of a wounded animal. Someone had just died.

Others, close to death, imitated his cry. And their cries seemed to come from beyond the grave. Soon everybody was crying. Groaning. Moaning. Cries of distress hurled into the wind and the snow.

The lament spread from wagon to wagon. It was contagious. And now hundreds of cries rose at once. The death rattle of an entire convoy with the end approaching. All boundaries had been crossed. Nobody had any strength left. And the night seemed endless.

Which sentence from the passage best supports the author’s viewpoint that the situation is hopeless?

“We all pulled our soaked blankets tighter around our shoulders.”

“The lament spread from wagon to wagon.”

“It was contagious.”

“The death rattle of an entire convoy with the end approaching.”

Explanation:

Define the term organic. How do the properties of vitamins relate to their organic nature?

Answers

Answer: Vitamins are organic substances present in minute amounts in natural foodstuffs. Having too little of any particular vitamin may increase the risk of developing certain health issues. A vitamin is an organic compound, which means that it contains carbon

Explanation:

An individual unit of replication is referred to as _____.

Answers

An individual unit of replication is referred to as a replicon.

Choose all the answers that apply. Extrusive igneous rocks _____. form on the surface form below the Earth's crust cool quickly cool slowly have large mineral crystals have small mineral crystals

Answers

1. form on the surface    2. form below the Earth's crust    3. cool quickly    4. cool slowly    5. have large mineral crystals    6. have small mineral crystals

those are your choices right? if so then...

1, 3, 5 are your answers

Choose all the answers that I told you to, cause there the right ones...

Extrusive igneous rocks _____ .

1.)form on the surface

3.)cool quickly

5.)have large mineral crystals
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