DNA is found in all living cells and in once living cells.
After DNA replication, there is always a new strand and old strand. (DNA contains two strands)
<span>Within eukaryotic cells, there is a network of organelles which have unique functions.
An organelle is termed as a specialized subunit within a cell which has specific functions and their functions are very vital for a cell to live. Organelles can be identified by microscopy and purified by cell fractionation.
In eukaryotic cells has many types of organelles. Larger organelles which are found in eukaryotic cells are visible with the light microscope, for example, vacuole and nucleus.
Some of the major eukaryotic organelles include plastid, endoplasmic reticulum, flagellum, mitochondrion, vacuole, nucleus and Golgi apparatus</span>
Answer:
The correct answer is - beetles ( coleoptera) that belongs to the arthropods.
Explanation:
There are maximum number of species in order coleoptera that belongs to the phylum arthropods. Almost 25% of total known types of life forms are beetles (coeleoptera).
The maximum numbers of known species in the U.S. are categorize into 4 distinct order coeloptera of the phylum of arthropods are-
Coleoptera (beetles) - 23,700
Diptera (flies) - 19,600,
Hymenoptera (ants, bees, wasps) - 17,500, and
Lepidoptera (moths and butterflies) - 11,500.
Thus, the correct answer is - beetles ( coleoptera) that belongs to the arthropods.
Which of the following species reproduces by internal fertilization?
a) cats
(b) Toads
(c) The fish
(d) alternative b and c
Answer:
(a) Los gatos
Explanation:
Only cats are capable of internal fertilization from the given choices above.
Internal fertilization is the fusion of gametes within an organism. This process occurs during sexual reproduction within the female.
- Toads and fishes exhibit external fertilization.
- External fertilization occurs where the male sperm externally fertilizes the eggs of the female.
- This usually takes place in a moist or wet place especially water bodies. The liquid medium will transport the sperm to the egg.
In cats, the female specie takes in reproductive cells from the male during coitus and it fertilizes the her eggs to produce a zygote.
