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SashulF [63]
3 years ago
5

Signal transduction is part of a cell\'s response to an external signal. although signal transduction pathways can differ in the

ir details, there are some common elements. determine which of the statements below accurately describe signal transduction pathways. select the six correct statements.
Biology
1 answer:
Brums [2.3K]3 years ago
4 0

The accurate statements to the signal transduction pathways are as follows:

1. A receptor changes conformation upon attachment, conducting a signal across the cell membrane.

2. A second messenger may carry a signal from the cell membrane to an organelle.

3. Signal transduction cascades, often involving protein kinases, amplify a signal intracellularly.

4. A receptor may pass on a signal by associating with another protein or by functioning as an enzyme.

5. A ligand, like hormone, combines with a specific cell surface receptor on a target cell.

6. Phosphatase eradicate phosphoryl groups from polypeptides, monitoring the response of the cell.

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In Black Boy, the young Richard Wright associates the bitterness and pain he feels over being abandoned by his father with _____
sukhopar [10]

Answer:

the pain he feels when he is hungry

Explanation:

Black Boy is a memoir that was written by the author Richard Wright in which he describes in detail what it was like for him growing up in the South as well as moving to Chicago in order to start his career. In this memoir he associates the bitterness and pain he feels over being abandoned by his father with the pain he feels when he is hungry

7 0
2 years ago
Name two types of evidence used to support the theory of evolution. explain how scientist use each type of evidence to provide s
joja [24]

Answer:

There are many types of evidence which support the theory of evolution such as comparative anatomy, fossil records, phylogenetic relationship, embryology et cetera

Comparative anatomy includes homologous organs and analogous organs. They support divergent and convergent evolution respectively.  

For example, the homologous structure of limb of humans, birds, bat, horse, whale et cetera show that they are made up of the same set of bones which are humerus, radius, ulna, carpals, metacarpals, and phalanges.  

It shows divergent evolution and supports that these organisms have evolved from a common ancestor.

Embryological evidence: When early stages of embryological development of different organisms are compared, it is found that these stages are similar at different levels of development.

For example:

  • The appearance of pharyngeal-arch (gill-like structures) in vertebrates during embryo development.
  • Salamanders and terrestrial frogs pass through larval stages within an egg. They possess the features similar to aquatic larvae, however, when they hatched out the eggs being ready for life on land.
3 0
3 years ago
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Which qualities describe the entire open-ocean zone? Check all that apply. few nutrients
uysha [10]

<u>Answer:</u>

- few nutrients

- high pressure

- low temperatures

<u>Explanation:</u>

1. Few nutrients:  open-ocean zone is located way far from the land, which is the main source of the essential nutrients.

2. High pressure: pressure increases by 1 atmosphere for every 10 meters increase in depth.

3. Ample sunlight: a large fraction of the sunlight is reflected back to the atmosphere from the sea surface.

4. Varying salinity: below the thermocline, the water is isolated from the atmosphere so the salinity remains stable over the year.

5. Low temperatures:  the temperature of open-ocean zone ranges from a low of -2°C to an average of 17°C.

8 0
2 years ago
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A scientist working in a lab wants to determine the precise pH of a solution. Which tool should the scientist use to measure pH?
fomenos

PH meter, which is a device used to measure hydrogen-ion activity in the solution. A PH meter is a voltmeter stuck to a pH electrode and a reference electrode. -maclittleseed

3 0
3 years ago
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A(n) ____________ is a family-tree like representation of how organisms are related based on ____________ .
yan [13]

Answer: A PEDIGREE is a family-tree like representation of how organisms are related based on ANCESTRY. It shows genetic relatedness or blood relationship between individuals or organisms.

Explanation: Pedigree can be used to determine

1. Family history or genealogy.

2. Genetic or blood relationship.

3. Coefficient of relationship.

4. Degree of relationship.

5. Proportions of shared genes.

6. Mode of transmission of diseases.

7. Risk evaluation or determination.

Genetic counseling.

8. Linkage analysis.

Pedigree symbols are used in constructing pedigree.

4 0
2 years ago
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