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
Yuki888 [10]
2 years ago
7

How do you think scientists use differences in characteristics to organize groups?

Biology
1 answer:
Oksanka [162]2 years ago
3 0

Answer:

by looking at their physical features, the fossil record, and dna sequences

You might be interested in
Explique de que forma a obstrução dos vasos da planta hospedeira pelos biofilmes de bactérias pode levar à morte progressiva das
musickatia [10]

Answer:

Os biofilmes são uma comunidade complexa de microrganismos, que pode ser composta por uma única espécie ou uma combinação de espécies. Os biofilmes são geralmente formados nas superfícies de materiais não vivos ou nos tecidos de organismos vivos; que pode estar externamente nos tecidos vivos dos organismos ou dentro dos tecidos vivos do organismo. Quando os microrganismos formam um biofilme, aumentam suas chances de resistir a anticorpos produzidos pelo organismo e aumentam suas chances de colonização completa do organismo. Algumas doenças são caracterizadas pela presença de biofilmes, que são, na maioria dos casos, a causa da doença.

<em>No caso de obstrução de vasos de plantas hospedeiras por biofilmes bacterianos; os biofilmes se formam na superfície do vaso e aumentam gradualmente de tamanho até que haja uma obstrução completa do vaso da planta. Quando o vaso da planta é eventualmente obstruído, o fluxo de materiais e minerais necessários é obstruído; levando à obstrução das células da raiz de receber materiais vitais e minerais necessários para o crescimento, isso eventualmente leva à morte progressiva das células da raiz.</em>

5 0
3 years ago
What is the role of glucose in catabolite repression? What is the role of glucose in catabolite repression?
Ierofanga [76]

Answer:

It decreases the levels of cAMP in the cell, repressing transcription from the lac operon.

Explanation:

When glucose is absent, cAMP serves as coactivator binds to CRP, the catabolite gene activator protein. The CRP-cAMP complex binds to the site near the lac promoter and stimulates the expression of the operon by RNA polymerase many folds.

Catabolite repression refers to inhibition of the synthesis of enzymes of lactose catabolism when glucose is present as an energy source. In the presence of glucose, synthesis of cAMP is inhibited resulting in its lower cellular concentration. The lower cAMP levels do not allow the binding of cAMP and CRP. The result is reduced expressed of lac operon.

4 0
3 years ago
Complete the graphic organizer to summarize exceptions to Mendels principles
Butoxors [25]

Answer:

<em>Exceptions to Mendel's principles: </em>

Does exceptions mean that Mendel was "wrong"? The answer is "NO". It means that we know more today about diseases, genes, and heredity than compared to what he expalined 150 years ago. Here I have summerized the exceptions with examples:

<em>Incomplete dominance</em>: When an organism is heterozygous for a trait and both genes are expressed but not completely.

<em>Example</em><em>:</em> SnapDragon Flowers

<em>Codominance</em>: When 2 different alleles are present and both alleles are expressed.

<em>Example</em>: Black Feathers + Whites feathers --> Black and white speckled feathers

<em>Multiple alleles</em>: Three or more alternative forms of a gene (alleles) that can occupy the same locus.

Example: Bloodtype

<em>Polygenic traits</em>: more than one gene controls a particular phenotype

Example: human height, Hair color, weight, and eye, hair and skin color.

5 0
3 years ago
when metals, nonmetals, and metalloids are compared according to luster, which is the best description of the appearance of meta
Harlamova29_29 [7]

Answer:

D they are both because they can be both metals and no metals

Explanation:

6 0
3 years ago
The electron arrangement for argon, which has 18 electrons, is
Leona [35]
6 protons  is the amount of electrons so it would be... 6 protons 6 neutrons 6 electrons in all so it is probably 18 protons but im not to sure but..idk good luck
6 0
3 years ago
Other questions:
  • During dry weather , the water level in a small pond drops because of runoff
    13·1 answer
  • What microscope has magnification ability of up to 60,000 times without losing clarity
    6·1 answer
  • Definition: This is an inanimate object that is not composed of cells. It may be made of atoms, molecules,
    12·1 answer
  • What is the hypothesis? The higher the temperature of water, the faster an egg will cook
    15·1 answer
  • Which is potentially a pathogen?
    11·2 answers
  • When the earth’s plates move, this movement can cause which of the following?
    10·2 answers
  • What section of the brain controls the ability to move your right hand?
    14·1 answer
  • Name the protein found in white and yellow fibers
    14·2 answers
  • Explain how weathering, erosion, and subduction/volcanic activity help move or transfer carbon around the
    12·1 answer
  • Hii! i’ll give brainliest pls help
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!