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Vikentia [17]
3 years ago
15

1. Develop a timeline in which you predict 10 of the most important advances that may occur in science during the next century.

Don't forget to add dates to your timeline!
2. Give an example of a living organism and how this organism meets at least six characteristics of life. You must be very specific for your organism in your descriptions to demonstrate your understanding of the characteristics of life. For example, you cannot just say "a dog obtains energy by eating." You need to explain what kinds of food a dog eats, what type of consumer it is, etc.
3. The four main groups of macromolecules are important to our bodies for various reasons. Explain the functions of each of these groups of compounds in your body.
4. There have been major developmental milestones in Earth’s history as well as mass extinction events. Do a little research on an organism that has gone extinct because of human impact. Answer the following questions:
What is the organism?
Where was it found?
What caused it to become extinct?
Biology
1 answer:
Alborosie3 years ago
8 0

Answer:

Top 10 Inventions That Changed the World

The compass. ...

The printing press. ...

The internal combustion engine. ...

The telephone. ...

The light bulb. ...

Penicillin. (Image credit: National Institutes of Health) ...

Contraceptives. (Image credit: Public domain) ...

The Internet. (Image credit: Creative Commons | The Opte Project)

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Humans, like other organisms, require energy for growth and repair. When cells create ATP for energy, carbon dioxide is produced
ad-work [718]

Answer:

The circulatory and respiratory systems interact to transport carbon dioxide to the lungs, where it is expelled from the body.

Explanation:

Carbon dioxide produced by the cells and tissues during cellular respiration is removed from the body through the interaction of the circulatory and respiratory system. The medium of transport of carbon dioxide is the blood which carries to the lungs, where it is expelled from the body in ordernto maintain homeostasis in the body.

Carbon dioxide molecules are transported in the blood from body tissues to the lungs in three ways:

1. Dissolution directly into the blood - due to its greater solubility in blood than oxygen, carbon dioxide is dissolved in blood plasma. On reaching the lungs, it leaves the blood by diffusion and is then expelled out of the body.

2. Binding to hemoglobin - carbon dioxide binds reversibly with haemoglobin in the red blood cells to form a molecule called carbaminohemoglobin. When it reaches the lungs, the carbon dioxide freely dissociate from the hemoglobin and is expelled from the body.

3. Carried as a bicarbonate ion - the majority of carbon dioxide molecules are carried as part of the bicarbonate buffer system. In this system, carbon dioxide diffuses into the red blood cells. The enzyme carbonic anhydrase within the red blood cells quickly converts the carbon dioxide into carbonic acid (H2CO3) which then dissociates into bicarbonate and hydrogen ions. The bicarbonate ions leaves the red blood cells in exchange for chloride ions in the plasma. The bicarbonate ions then travel in plasma to the lungs, where they enter the red blood cells again. It combines with hydrogen ions from the haemoglobin to form carbonic acid. Carbonic anhydrase breaks carbonic acid down into water and carbon dioxide which is then expelled from the lungs.

8 0
3 years ago
20.
xxMikexx [17]

Answer:

Sugars and phosphates  

Explanation:

DNA is deoxyribonucleic acid.

The backbone is based on a repeated pattern of a sugar group (deoxyribose) and a phosphate group.  

The image below shows one straightened-out strand of DNA with a backbone of alternating sugars and phosphates.

A is wrong. There is no ribose in DNA.

B is wrong. The nucleic acids A, C, G, and T join one strand of DNA to the other.

C is wrong. There is no RNA in DNA.

3 0
3 years ago
Read 2 more answers
If you have an 81 for your 9 weeks grade but make a 70 on your exam whats going to be your final grade?
Sloan [31]
Man you need to change this to a different catagory
5 0
3 years ago
explain how a carrier protein can facilitate the diffusion of glucose or other substances into the cell.
Sveta_85 [38]

Specific chemicals are bound by carrier proteins and transferred on one side of the membrane. The conformational changes they go through next enable the molecule to cross the membrane and exit on the other side.

How carrier protein facilitate the diffusion?

When a molecule diffuses, it usually moves from a high concentration location to a low concentration area until the concentration is the same everywhere in the space.

Contrary to channel proteins, another form of membrane transport protein that is less selective in the molecules it transports, carriers are proteins that move a particular material through intracellular compartments, into the extracellular fluid, or across cells. Carrier proteins are found in lipid bilayer cell structures such cell membranes, mitochondria, and chloroplasts, just like other membrane transport proteins.

Therefore, carrier proteins can facilitate the diffusion of glucose or other substances into the cell.

To learn more about diffusion click on the link

brainly.com/question/94094

#SPJ4

6 0
1 year ago
Use the drop down menu to complete each statement about contour lines
netineya [11]
Hey bud, this is not a question someone can answer. Try giving us the drop down menu stuff?
8 0
3 years ago
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