Answer: A) Bacteria.
Bacteria are the most primitive life forms on earth. Organelles are the subcellular compartments of cell enclosed by lipid layer and impart the specific function to it.
Bacteria are prokaryotes, thus lack membrane-bound organelles. Whereas Fungi, Plants, and Protist being eukaryotes, consist of membrane-bound organelles.
b. increase communication between the species
c. ensure that mating occurs between member of the same species
d. promote the evolution of new species through inter breeding
Answer:
Option C. Ensure that mating occurs between members of the same species.
Answer:
It point outs the magnetic poles of the magnetic field by aligning itself
Explanation:
The needle of the compass is a small magnet with a north and south magnetic poles. Now when compass is placed in a magnetic field , its needle will try to align itself in a way such that magnetic poles of the needle points the respective opposite pole of the magnetic field.
Therefore , the alignment of magnetic needle of compass shows the following -
a) North of the magnetic needle of compass - shows the south pole of the magnetic field
b) South of the magnetic needle of compass - shows the North pole of the magnetic field
It aligns in a direction parallel to the field
The tough opaque tissue which acts as protective outer layer is called as the Sclera. Sclera is made up of tough, fibrous tissue. Eye is the main organ of the visual system.
Eyes are the organs of the visual system. They provide living organisms with vision. Eyes detect light and convert it into electro-chemical impulses in neurons and send it to the brain.
Human eye is divided into several different parts. Human eye is 2.3 cm in diameter and filled with fluid, and following parts are present in the eye including cornea, sclera, retina, lens, pupil, optic nerves. One of these include sclera, it is the outermost protective layer of eye. This tough, fibrous tissue surrounds the eyeball and attaches to cornea, which is the clear front part of the eye.
The white part of the eye is the sclera. Over this sclera lies the conjunctiva, a clear skin layer that protects the eye from drying.
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Answer:
This water is the source of precipitation.
Explanation:
Precipitation is the fall of water in liquid (rain) or solid (snow and hail). It results from the condensation of water vapor that exists in the atmosphere. This water vapor is the result of the evaporation of oceans, rivers and lakes that occurs during the water cycle. In summary, we can say that the sun heats rivers, lakes and oceans, causing their water to evaporate in the form of water vapor. The water vapor is captured by the clouds, condenses and returns to the land in the form of liquid water through precipitation.
For this reason we can say that during the water cycle, evaporated water is the source of precipitation.
could be a steroid hormone
does not pass through the cell membrane
binds to a receptor on the cell membrane
is this B?
Answer:
Explanation:
Meiosis is a type of cell division in which the ploidy of the organism reduces to half in the daughter cells.
Meiosis produces 4 daughter cells from 1 parent cell with a different combination of the genetic material but haploid chromosomes.
The meiosis process takes place in two stages in which during the first stage, the homologous chromosomes separate reducing the chromosome number to half that is from diploid chromosomes of parents to haploid in daughter.
Since the process of meiosis form haploid gametes in both male and female therefore after fertilization restores the diploid chromosomes of the parent cell and form a diploid structure.