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
anzhelika [568]
2 years ago
10

How the wildebeest are keystone species and the connection between fires , tree .?

Biology
1 answer:
nadezda [96]2 years ago
7 0

Answer:Wildebeest are considered keystone species because their presence has myriad effects on the ecosystem, unlike those of any other species. Wildebeest are the "lawnmowers" of the Serengeti grassland. They keep grass short which in turn reduces the frequency of fires.

You might be interested in
Two reasons why interdisciplinary science is important to society
Troyanec [42]

The reason why interdisciplinary science is important to society is because of the following reasons; It has incorporate sources of knowledge and it is a way of increasing our knowledge. This science has made people realize and learn more things than they actually know and it made people understand things around them without having to actually think an explanation behind it.

3 0
3 years ago
I REALLY NEED HELP. I DO NOT GET THIS AT ALL. PLEASE HELP ME. IT WILL BE GREATLY APPRECIATED.
kati45 [8]

Answer:

The test cross is shown below

      T         T

t      Tt         Tt

t       Tt         Tt

The alleles shown in the vertical side (tt) are recessive and come from the male parent. The alleles TT are dominant and come from the female parent.

For the variety of offsprings to be 100% tall, the recessive parent had to be crossed with a homozygous dominant parent.  If the female was heterozygous with which the cross was done,then there would be small tomato plants in the offspring generation.

3 0
3 years ago
What is the mechanism of synaptic transmission?
LenKa [72]

Answer:

Synaptic transmission consists of three steps: (1) intracellular vesicles loaded with neurotransmitters are targeted to the presynaptic membrane; (2) an action potential triggers exocytosis to release the neurotransmitters to the synaptic cleft between two neurons

hope this helps !!!!

5 0
3 years ago
What are the 4 biomolecules classified as
e-lub [12.9K]

\huge\cal\color{violet}{Answer ❤}

\orange\RightarrowCarbohydrates

\orange\RightarrowLipids

\orange\RightarrowProteins

\orange\RightarrowAucleic acids

\sf\blue{hope\:it\:helps}

4 0
3 years ago
E. coli DNA polymerase III is both highly accurate and highly processive. a) Describe how Pol III avoids the incorporation of im
kogti [31]

Answer/Explanation:

DNA polymerase is the enzyme responsible for replicating DNA. It is hugely important that is performs its functions accurately, as if incorrect bases are incorporated this can lead to mutations that disrupt the structure and function of genes. It adds nucleotides in a 5' - 3' direction only.

DNA polymerase III also has high processivity, which means that for every time it binds DNA, it is able to add many bases before it becomes dissociated.

A. DNA polymerase avoids the incorporation of improperly paired nucleotides in two ways:

  • The first way depends on the structure of the enzyme. If the nucleotide that the enzyme is in the process of adding is not complementary to the template, then the nucleotide will not align with the template, and thus it is more inefficient to add. This inefficiency means the nucleotide is more likely to leave the active site before it is added, and DNA polymerase can replace it with the correct nucleotide.
  • It also has proofreading capabilities. This means, when an incorrect base is added, it recognises the error and can fix this. It can do this because it possesses 3'-5' exonuclease activity. That means, it can chop out incorrectly added bases.

B. Ribonucleotides are the nucleotides that are incorporated into a growing RNA molecule. They are different from deoxyribonucleotides because of the differences in the sugar backbone (ribose vs deoxyribose). Their incorporation would disrupt the structure and function of the DNA, leading to problems with transcription and replication.

DNA polymerase avoids incorporating these nucleotides primarily because of the structure of the enzyme. Ribonucleotides cannot fit into the active site of DNA polymerase due to what is called a "steric filter" or "steric gate". This gate/filter function is performed by specific amino acid residues which usually have a bulky side chain and thus block the incorporation of the 2'OH of the ribose sugar (which is lacking in the deoxyribose sugar)

9 0
3 years ago
Other questions:
  • Are plants autotrophs or heterotrophs? what does this mean?
    15·1 answer
  • Coals ,oils and gas are examples of
    6·1 answer
  • How does a vaccination help to prevent a disease? it reduces the severity of symptoms to a disease. it generates a population of
    7·1 answer
  • How many megawatt hours (MWh) per year of savings did the students identify for computers at the Penn State Mueller Laboratory B
    10·1 answer
  • What is the source of energy that fuels large storms such as hurricanes?
    8·2 answers
  • What is the main energy providing molecules in living things
    9·1 answer
  • What traits might be ideal to create children who are champion skiers? If it were possible for parents to select these genes, is
    12·1 answer
  • HELP PLEASEEE!!!
    11·1 answer
  • ¿Que dos moléculas necesitan las plantas para la fotosíntesis?
    10·1 answer
  • Which pair of terms most accurately describes life history traits for a stable population of wolves? A. semelparous; r -selected
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!