1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Zanzabum
3 years ago
5

Study the population growth curve of three species of squirrels on an island. Red squirrels and gray squirrels have been the nat

ive species on the island for the past 1,000 years. The black squirrel is an invasive species. Invasive species aren’t native to the ecosystem. They move into an ecosystem because of natural changes or human intervention. In 2005, black squirrels entered this island. Red squirrels and black squirrels have identical food requirements, but gray squirrels eat different kinds of food. What’s the plausible reason for the population change?
A.
The red squirrel has no predators, and the black squirrel has many predators.
B.
The gray squirrel competes with the black squirrel for food.
C.
The black squirrel has no predators, and the red squirrel faces higher competition for resources.
D.
The black squirrel has many predators and faces tougher competition for resources.
Biology
1 answer:
Orlov [11]3 years ago
5 0

Answer:The THREE effects on the island's squirrel will be The red and black squirrels will have to compete for nutrition:

The red and black squirrels will have to compete for nutrition: As the invasive specie will also require food for its survival so there will be competition for nutrition.

The food availability for red squirrels may decrease: As red and black squirrels have identical food requirements so because of competition there will be less availability of food for red squirrels

The food availability for gray squirrels will not be affected: The gray squirrel have different diet, there is no competition of food for them

Explanation:

You might be interested in
Thermophilic anaerobic bacteria are highly insensitive to ethanol. Scientists demonstrate that one of their membrane proteins X
BARSIC [14]

Answer:

Since high ethanol is a major stress during ethanol fermentation, ethanol-tolerant yeast strains are highly desirable for ethanol production on an industrial scale. A technology called global transcriptional machinery engineering (gTME), which exploits a mutant SPT15 library that encodes the TATA-binding protein of Saccharomyces cerevisiae (Alper et al., 2006; Science 314: 1565-1568), appears to be a powerful tool. to create ethanol tolerant strains. However, the ability of the strains created to tolerate high ethanol content in rich media remains to be demonstrated. In this study, a similar strategy was used to obtain five strains with higher ethanol tolerance (ETS1-5) of S. cerevisiae. When comparing the global transcriptional profiles of two selected strains ETS2 and ETS3 with that of the control, 42 genes that were commonly regulated with a double change were identified. Of the 34 deletion mutants available in an inactivated gene library, 18 were sensitive to ethanol, suggesting that these genes were closely associated with tolerance to ethanol.

Explanation:

Eight of them were novel and most were functionally unknown. To establish a basis for future industrial applications, the iETS2 and iETS3 strains were created by integrating the SPT15 mutant alleles of ETS2 and ETS3 into the chromosomes, which also exhibited increased tolerance to ethanol and survival after ethanol shock in a rich medium. Fermentation with 20% glucose for 24 h in a bioreactor revealed that iETS2 and iETS3 grew better and produced approximately 25% more ethanol than a control strain. The performance and productivity of ethanol also improved substantially: 0.31 g / g and 2.6 g / L / h, respectively, for the control and 0.39 g / g and 3.2 g / L / h, respectively, for iETS2 and iETS3.

 Therefore, our study demonstrates the utility of gTME in generating strains with increased tolerance to ethanol that resulted in increased ethanol production. Strains with increased tolerance to other stresses such as heat, fermentation inhibitors, osmotic pressure, etc., can be further created using gTME.

7 0
3 years ago
Synthesis of proteins is​
babymother [125]

Phenomena of amino acid assembly from RNA. The synthesis of proteins from RNA is known as translation. In eukaryotes, translation occurs in the cytoplasm, where the ribosomes are located. Ribosomes are made of a small and large subunit that surround the mRNA.

6 0
3 years ago
Pls help me answer thank you
saveliy_v [14]

Answer:

b is the correct answer

Explanation:

hope it helps u..

7 0
3 years ago
Choose all answers that apply
Nutka1998 [239]

Answer:

<em><u>is</u></em><em><u> </u></em><em><u>made</u></em><em><u> </u></em><em><u>of</u></em><em><u> </u></em><em><u>a</u></em><em><u> </u></em><em><u>double</u></em><em><u> </u></em><em><u>layer</u></em><em><u> </u></em><em><u>of</u></em><em><u> </u></em><em><u> </u></em><em><u>phospholipids</u></em>

3 0
3 years ago
Check your understanding. Which items did you
s2008m [1.1K]

RNA nucleotides form complimentary base pairs with DNA bases.  Hydrogen and sugar-phosphate bonds form and the mRNA is synthesized.

Explanation:

The process of mRNA formed by DNA is called transcription. The genes coding for the protein is present on DNA as a nitrogenous base or nucleotides.

Transcription takes place inside the nucleus with the assistance of major enzyme RNA polymerase. In transcription 5'to3' single strand of RNA is synthesized which is complementary to the 3'to5' strand of DNA. The sequence of DNA has promoter sites which will be recognized and DNA will unzip to form transcription bubble. Several transcription factors and enzyme will be required to synthesize mRNA.

This mRNA after some modification would become primary transcript and pass on to the cytoplasm where protein synthesis will take place.

8 0
3 years ago
Other questions:
  • On your own notebook paper write a four sentence summary of the most important ideas on each section.
    12·1 answer
  • Generally, single-celled plants may reproduce by
    13·2 answers
  • How did organic compounds get their name? How is the word related to it’s meaning
    6·1 answer
  • What is a "missing link" in the fossil record? A.) a fossil that shows a vestigial structure B.) a transitional fossil that show
    15·2 answers
  • The sweetest of all sugars that is found in fruits and honey is
    13·1 answer
  • Which of the following is a function of chloroplasts?
    15·2 answers
  • What is the full account of yeast​
    5·1 answer
  • In meiosis the nucleus undergoes two divisions. Which of the statements about meiosis I is correct?
    13·1 answer
  • What is the main function of the central vacuole in a plant cell?
    15·2 answers
  • Besides a means of gathering knowledge, how can the scientific method be useful when it is applied?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!