The hemoglobin of sickle cell anemia differs from the normal protein by one amino acid i.e., glutamic acid is replaced by valine.
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The hemoglobin of a sickle cell anemia: C.
A sickle cell is when it runs out of oxygen and only carries CO2 which can cause many health problems in the body.
This similarity can be explained by Charles Darwin's Theory of Evolution. Humans and chimpanzees share a common ancestor wherein a number of million years ago, due to adaptation of their environment, human species branched out and eventually evolved into Homo sapiens.
Answer:
The correct answer would be common ancestry.
Common ancestry means that different species have been established from a single parent species or population.
Organisms which share more recent common ancestors tend to have more similarity as compared to the organisms which share an older ancestor.
Humans and chimpanzees also believed to evolved from a common ancestor around 6-7 million years ago.
It is the reason why humans and chimpanzees share around 96-99 percent of the DNA.
human cheek cell
onion cell
Answer: The correct answer is for the blank is -
human cheek cell.
Cell wall can be described as a rigid layer, composed of polysaccharides (such as cellulose in higher plants) and presentoutside the cell membrane ( also called plasma membrane) in plants, fungi, and bacteria.
It is absent in animal cells, such as human cheek cells (where only cell membrane is present, surrounding the cytoplasm of cell).
Thus, human cheek cell does not contain cell wall.
B. The cell wall provides structure for the plant, which allows it to grow up and out to absorb sunlight.
C. The cell wall is flexible and controls what enters and leaves the cell.
D. The cell wall is rigid and firm, limiting the cell shape.
Answer:
B
Explanation:
The cell wall provides structure for the plant, which allows it to grow up and out to absorb sunlight.
Answer:
The total energy production of a mitochondrion is enhanced by its large internal surface area.
Explanation:
All cellular activity requires energy, it is through mitochondria that this energy necessary for cell activity will be generated. Mitochondria has a large internal surface area, all of which strongly influences the energy production of this organelle.
To get energy, the cell necessarily needs glucose. Mitochondria have the function of breaking down glucose by introducing oxygen into carbon, what remains is carbon dioxide, which will come out through exhalation. This process performed by this important cellular organelle is known as cellular respiration. In order for cells to perform their functions normally, they depend on various chemical reactions that occur within the mitochondria.
Despite its great importance, mitochondria is a fairly small cell organelle. There are cells that have a large number of mitochondria, however, the amount of this organelle will depend on the function of each one. The more the cell needs energy to perform its vital functions, the more mitochondria it will produce.
phytoremediation
herbicide tolerance
gene transfer to nontarget species
Answer:
The answer is D. Gene transfer to non-target species.
Explanation:
Using DNA technology we have made several genetically modified crops called GM crops. But sometimes the transgenic trait or gene may effect the non-target species. For example Bt-crops were found damaging the soil health. These pest resistant Bt-crops release Bt toxin near the soil root zones. High levels of Bt toxin can affect the health of soil as well as the soil insects. Hence GM crops must be monitored for the effects on non-target species.
Answer:
The correct answer is: Gene transfer to non-target species. It is believed within the scientific field that these risks directly affect environmental impacts and need to be assessed on a case by case basis and recommended post-release ecological monitoring.
Explanation:
Transgenic crops could possibly entail positive or negative indirect environmental effects through changes in agricultural practices such as pesticide and herbicide use and cropping patterns. Agriculture affects the environment it does not matter which type we are talking about. Then it is normal to conclude that the use of new genetic techniques in agriculture will also affect the environment.