BIOLOGY HIGH SCHOOL

Show how transcription occurs in a cell

Answers

Answer 1
Answer: During transcription, RNA molecules re produced, mRNA specifically. Transcription in protein synthesis is when the mRNA is created using the template of DNA. It is the process of transcribing DNA to mRNA which is catalyzed by RNA polymerase. Transcription encompasses manufacturing, splicing, and adding of caps and tales of the mRNA. All of these happen in the nucleus of the cell. Replication, transcription, and translation are three different terms. Replication means duplication of DNA. Transcription is the multiplication or duplication of genetic information into mRNA and translation is protein production through activities of ribosome.

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Under a light microscope, a stained cell shows chromosomes lined up along the middle. What will happen next? Spindles will form and centrioles will move to opposite poles. A nuclear membrane will form around each set of chromosomes. Chromosomes will separate and move to opposite poles.

Answers

Chromosomes will separate and move to opposite poles.

A light microscope uses focused light and lenses to magnify an object. Light microscopes come in several forms. (1) Simple light microscopes use a single lens to magnify an object and cannot reach high magnification just like a handheld lens whose highest clear magnification in the best conditions is 25x. (2) Compound light microscopes use two sets of lenses - an objective lens and an eye piece. This is the type of light microscope whose magnification power reaches between 1000x and 2000x.

Many energy sources use turbines to generate electricity. What is one type of energy source that does not use turbines? A. Coal B. Hydroelectric C. Wind D. Solar

Answers

Solar power does not use turbines.

Why do most organisms that die not leave a record of their existence

Answers

They leave no record of their existence because it's rare that fossils form. You need the right conditions in which the animal's remains are covered in silt, dirt, and rock layers in order for a fossil to form and therefore preserve the animal's remains in rocks. Otherwise, the animal's remains will be eaten by other animals or eventually rot away. 

When gametes combine to form a zygote, the chromosomes number of the zygote is now referred to asa. diploid.
b. haploid.
c. monoploid.
d. polyploid.

Answers

a. diploid

Fertilization is the combined sperm and egg cell to form a zygote.
Sexual reproduction provides genetic variation because the sperm and egg that are produced contain different combinations of genes than the parent organism.  Sexual reproduction involves meiosis which is the process of a cell doubling its DNA, shuffling its genes and then dividing the shuffled DNA among four cells.

Answer:

The correct answer is a. diploid.

Explanation:

Gametes are haploid entity which contains one genome or one complete set of chromosome a particular organisms. Gametes are represented by (n) and are produce as a result of meiosis in the germ cells during gametogenesis. Fusion or fertilization of a male and a female gamete results into one celled structure called zygote.  The zygote receives two genomes one each from a male gamete and a female gametes. Thus, a zygote contains two sets of chromosomes. ( n+n) = 2n or diploid.  

Which plant adaptation would likely be found in the taiga?

Answers

Taiga is a coniferous forest in the northern high latitude with subarctic climate. Summers are short with low temperatures, and winters are very long and cold. Many trees are evergreen conifers with needle-like leaves. These characteristics help photosynthesis (evergreen) and at the same time less water loss (needle-like leaves). Also, leaves are dark-colored to absorb more solar heat. 

Answer:

C

Explanation:

I just did it

which of the following factors is most likely a density independent regulartor Of Population Growth Of Poison Dart Frogs In The Rainforest

Answers

Maybe some type of natural disaster?

Clear cutting of a rain forest.

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