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scZoUnD [109]
4 years ago
7

1.

Biology
2 answers:
devlian [24]4 years ago
8 0
1. False
Speciation is the formation of new species from a population of species. This process has three main stages: isolation, where the population is separated; adaptation, where the isolated population adapts to the new environment; and reproductive isolation, where the two populations can no longer breed to produce fertile offspring.

2. Behavioral isolation
This occurs when there is a difference in mating rituals or other behaviors which prevent interbreeding.
Lemur [1.5K]4 years ago
3 0
1. The correction option is false. This is because, reproductive isolation is the one that is considered as the last stage in speciation.
2. Geographic isolation. The correct option is B.
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Gene 1: TYR Gene amino acid sequence?​
Novosadov [1.4K]

Explanation:

<h3>The amino acid sequence of tyrosinase from neurospora crassa </h3>

<em>monophenol,</em><em> </em><em> </em><em>dihydroxyphenylalanine,</em><em> </em><em>oxygen</em><em> </em><em>oxidoreducatase </em><em>.</em>

8 0
3 years ago
Under what conditions does the trp repressor block transcription of the trp operon? (A) when the repressor binds to the inducer
Brilliant_brown [7]

The trp repressor blocks transcription of the trp operon (B) when the repressor binds to tryptophan.

trp operon or the tryptophan operon codes enzymes for the amino acid tryptophan. The operon is on when the tryptophan is low in amount whereas the operon is off when the tryptophan is low in amount. The operon is an assimilation of five genes.

Repressor is a small protein that is supposed to prevent the synthesis of proteins. It does so binding to the operator gene. Therefore, presence or absence of repressor is a determining factor for an operon to be on or off.

To know more about trp operon, here

brainly.com/question/28239403

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6 0
1 year 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
When fertilizer runs off into streams and lakes, what increases in the water? Select all that apply.
Goshia [24]
D the amount of Toxic Chemicals
7 0
3 years ago
NEEED HELP ASAP!!!
Nana76 [90]
Answer is B or the ball because other options don’t have any velocity and it makes the kinetic energy zero for them .the formula is k=1/2mv^2
8 0
3 years ago
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