All categories

3 years ago

Which of the following is not a type of adaptation?

Biology

1 answer:

enyata [817]3 years ago

5 0

Answer: The correct answer for the first question is- B) Mechanical.

Adaptation can be described as a process of change in an organism over time that facilitates its survival in the changing environmental conditions. It results due to mutation or genetic change in the individual that gives a benefit to the organism. It exhibits change in structure ( like succulent plants in desert), function, or behavior.

Mechanical is not a type of adaptation as it deals with movement of objects.

The correct answer for second question is- C) Variations.

Variation among organisms in a population results from change in the genetic material or their genetic sequences. Change at the genetic level is thus reflected in the phenotypes ( like different color of feathers in birds).

Thus, difference is in the feather color reflects variations.

You might be interested in

Indicate whether each of the following descriptions is true of microtubules (MT), microfilaments (MF), intermediate filaments (I

qwelly [4]

Answer:

(a) Microfilaments

(b) Microtubules

(d) Microfilaments

(e) Intermediate filaments

(f) Microfilaments, intermediate filaments, microtubules

(g) Microfilaments, microtubules

(h) Microfilaments, intermediate filaments, microtubules

(i) Microtubules, microfilaments

(j) Microtubules

Explanation:

Microtubules (MTs) are dimers of the protein tubulin (alpha- and beta-tubulin subunits) and they are major components of the cytoskeleton. MTs play diverse cellular roles including, mechanical support (cytoskeleton), transport, motility, chromosome segregation, etc. Microfilaments (MFs) are protein filaments that also form part of the cytoskeleton in eukaryotic cells. MFs consist of G-actin monomers assembled in linear actin polymers, and their functions include mechanical support, cytokinesis, changes in cell shape, amoeboid movement, endocytosis and exocytosis, etc. MFs associate with the protein myosin to generate muscle contractions. Actin filaments/MTs assembly from monomeric actin/tubulin is caused due to energy expenditure, where ATP/GTP bound to actin/tubulin is hydrolyzed during polymerization. Finally, intermediate filaments (IFs) are a type of cytoskeletal element composed of a heterogeneous group of structural elements, and they are not found in all eukaryotes. The primary function of the IFs is to contribute to the mechanical support for the plasma membrane where these filaments come into contact with other cells and/or with the extracellular matrix. The IFs are not directly involved in cell movement. All 3 types of cytoskeletal elements (microfilaments, intermediate filaments, microtubules) can be visualized by fluorescence microscopy when cells express chimeric MT/IF/MF.–GFP fusion proteins.

8 0

3 years ago

A monitor visits a site conducting a Phase III study for an investigational drug to treat depression. The monitor is surprised t

satela [25.4K]

Answer:

sell the drugs to doctors

Explanation:

only came for the points

7 0

3 years ago

Describe three of Darwin's observations about animals in south America and on the galapagos islands.

Harrizon [31]

Tortoises are larger on the islands, where there are less predators
Flinches are different colors depending on their diet yet they are still anatomically similar
Animals are different within species and mate all the way to the point where some must die

4 0

3 years ago

Explain darwin's main contribution(s) to the theory of evolution.

icang [17]

Darwin explained that evolution occur due to natural selection.

3 0

3 years ago

Between 1955 and 2012 the global TFR Rose from 2.4 to 5 true or false

Arada [10]

I believe it is actually false. It dropped from 5 to 2.4. Hope it helps!

7 0

3 years ago