Answer:
The answer would be the cell wall
Explanation:
B is not correct because a cell membrane is a semipermeable membrane surrounding the cytoplasm of a cell.
C is wrong too because a Vacuole is a space or vesicle within the cytoplasm of a cell, enclosed by a membrane and typically containing fluid.
And D is false because a ribosome is a minute particle consisting of RNA and associated proteins found in large numbers in the cytoplasm of living cells. They bind messenger RNA and transfer RNA to synthesize polypeptides and proteins.
Answer:
a) The demand for labor among steel-producing firms in Pennsylvania will Fall
b) The demand for labor among automobile-producing firms in Michigan, for which steel is an input, will Fall
Explanation:
Economy revive itself naturally. Therefore , whenever price of something rises , the demand for it gets regulated in a manner to bring its cost down. Now since the price of steel has risen, the consumption of steel will down due to which its production shall also fall down and once the production fall down the requirement of number of steel producing labor also falls down.
Answer:
This zygote is tetraploid.
Explanation:
An haploid cell contains a single set of chromosomes (one chromosome 1, one chromosome 2, one chromosome 3, etc.).
A diploid cell contains two sets of chromosomes (two chromosomes 1, two chromosomes 2, etc.).
Usually, two haploid gametes fuse and generate a diploid zygote, that has a set of chromosome from one parent and another set from the other parent.
If during meiosis the generated gametes are diploid instead of haploid, the resulting zygote from that fusion will have four copies of each chromosome. An organism that has four sets of chromosomes (four chromosomes 1, four chromosomes 2, etc.) is called tetraploid.
Answer:
The skin protects us from microbes and the elements, helps regulate body temperature, and permits the sensations of touch, heat, and cold.
Answer:
ventilation
Explanation:
Breathing, also known as ventilation, is the process of moving air or water in order to facilitate the gas exchange between the external and internal (body) environment, mostly to eliminate carbon dioxide (CO2) and bring in oxygen (O2). For example, fish are aquatic animals that need to run water over their gills to get the O2 that they need to survive (gills are organs that create a large surface area for ventilation). Moreover, insects ventilate their tracheal system to get O2. Finally, terrestrial vertebrates (i.e., amphibians, reptiles, birds, and mammals) use organs called lungs to exchange O2 and CO2 between their cells and the external environment.
