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Vika [28.1K]
3 years ago
14

When scientist copy DNA dean first have to cut out the part thing want to copy what molecule do they use to do this

Biology
1 answer:
dezoksy [38]3 years ago
4 0

Answer:

How exactly do The answers to these questions are DNA replication and protein ... Wilkins amp Franklin Used X Ray crystallography to take pictures of DNA. ... DNA 39 s unique structure enables the molecule to copy itself during cell division. ... Much like a spiral staircase it has two single strands that join and twist together.

Explanation:

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Help quickly please ill mark brainliest!
Zigmanuir [339]

Answer:

1. homo

2.hetero

3.homo

Explanation:

4 0
3 years ago
How would the contractile vacuole of a freshwater amoeba respond if the organism was placed in seawater?
saw5 [17]

Correct answer: B). With fewer contractions


The main function of a contractile vacuole is to maintain the sufficient amount of water in the protoplasm of the cell. For the freshwater amoeba contractile vacuole is needed to pump water and maintain a osmoregulation.

But when it is kept in sea water, more contraction is required to expel the water out of the cell in order to make the environment inside amoeba same as of sea water.






6 0
4 years ago
Read 2 more answers
The Neanderthal skeleton known as the "old man" showed evidence of many injuries over a long life. Several broken bones had heal
UNO [17]

Answer:

It has been suggested that these kinds of lesions may be indicative of  fighting with other members of its species or the attacks of predators

Explanation:

The Neandertals were exposed to very hard environmental conditions, thereby these lesions may be indicative of such conditions to which this species was exposed.

5 0
3 years ago
Which best summarizes the flow of energy in a producer
Sphinxa [80]
Sun Chloroplasts Mitochondria is the best flow of energy for a Producer.
8 0
3 years ago
Differentiate between ;
Rasek [7]

Answer:

1) The main difference between Fats and Oils is that, fats are usually derived from animals, whereas oils are usually derived from plants.

Fats and oils are very important for every human body. It is mainly essential for daily dietary plan. Fats and oils are totally different from each other. In simple terms, fats are animal fats whereas oils are vegetable oils. The other difference is fats tend to be solids at room temperature; on the other hand, oils tend to be liquid at room temperature. Remember, on the daily basis the two terms can be used interchangeably because both, fats and oils contain 9 calories per grams.

2) Phospholipids are similar to triglycerides, but they do vary slightly in form and function. While triglycerides have glycerol and three fatty acids, phospholipids have glycerol, two fatty acids and a phosphate. Phosphates are molecules with charges and have oxygen and phosphorus. ... Fat cells do not store phospholipids.

3) Thoracic cavity, also called chest cavity, the second largest hollow space of the body. It is enclosed by the ribs, the vertebral column, and the sternum, or breastbone, and is separated from the abdominal cavity (the body’s largest hollow space) by a muscular and membranous partition, the diaphragm. It contains the lungs, the middle and lower airways—the tracheobronchial tree—the heart, the vessels transporting blood between the heart and the lungs, the great arteries bringing blood from the heart out into general circulation, and the major veins into which the blood is collected for transport back to the heart. The heart is covered by a fibrous membrane sac called the pericardium that blends with the trunks of the vessels running to and from the heart. The thoracic cavity also contains the esophagus, the channel through which food is passed from the throat to the stomach.

4) An organelle (think of it as a cell's internal organ) is a membrane bound structure found within a cell. Just like cells have membranes to hold everything in, these mini-organs are also bound in a double layer of phospholipids to insulate their little compartments within the larger cells.

5) Tissues are groups of similar cells that have a common function. An organ is a structure that is composed of at least two or more tissue types and performs a specific set of functions for the body. Many organs working together to accomplish a common purpose is called an organ system.

6) Absorption: The process of absorbing food in the form of nutrients into the blood stream of the body. Assimilation: The process of nutrients being absorbed by each cell of the body in the form of energy. Egestion: Secretion of waste, unwanted and excess substances from the body after food the as been digestion

hope this answer helps you!!

please mark as brainliest... thank you!

8 0
3 years ago
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