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3 years ago

PLEASE ANSWER ASAP AND FILL IN THE 3 BLANKS

Biology

1 answer:

Ulleksa [173]3 years ago

5 0

Answer:

15,000 from green plants to rabbits

1,500 from rabbits to weasels

150 from weasels to eagles

Explanation:

10% of the energy is being passed on from one level to the next, it goes as 150,000 to 15,000 to 1,500 to 150 to 15 to 1.5 to 0.15 to 0.015 and so on. (hint just move one zero to get the answer much easier)

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In the genetic code,a.some codons specify more than one amino acid.b.some codons consist of two nucleotides.c.some amino acids a

professor190 [17]

Answer:

Explanation:

In the central dogma of genetic expression, a codon is a triplet nucleotide sequence in a mRNA that specifies a particular amino acid. Each group of codon contains information for one amino acid.

There are only four nucleotides in an mRNA; Adenine, Guanine, Cytosine and Uracil. If these nucleotides are sequenced three at a time, there will be 64 combinations (where 61 of these combinations code for an amino acid while the remaining three represent stop codons; UAA, UAG, UGA) of the 4 nucleotides i.e. 4^3 or 4×4×4.

There are only 20 different amino acids, meaning that there are more possible codons than the amino acid they code for. Due to this reason, most amino acids are indicated by more than one codon i.e more than one codon can code for a particular amino acid in the genetic code. This phenomenon is referred to as DEGENERACY or REDUNDANCY in genetic coding.

For example; Phenylalanine, an amino acid, is coded for by UUU and UUC codons. Also, leucine is coded for by CUU, CUC, CUA and CUG codons.

Note that, all amino acids except tryptophan (coded for by only one amino acid, UGG) is coded for by 2 or more codons.

These degenerate pattern is important to the genetic code because it helps minimize the effect incorrect placement of nucleotides can have on protein synthesis i.e. a nucleotide can be incorrectly placed due to mutation and still not affect the synthesis of protein. e.g. a nucleotide sequence of UUU can be incorrectly placed as UUC, but because the codons both code for one amino acid, no harm is done.

7 0

3 years ago

The sequence is ACUCUUCUGGUCCCAACA.

Bad White [126]

Answer:

frame shift

Explanation:

5 0

1 year ago

GIVING BRAINLIEST!!!!

Sphinxa [80]

The answer is A I believe.

6 0

3 years ago

It was not until the time known as the modern synthesis that Mendel's laws and the mathematical descriptions of genetic variatio

Andreas93 [3]

Answer:

True

Explanation:

The Modern Synthesis is also called the Neo-Darwinian theory as it explains the fusion of Mendelian genetics with Darwinian evolution into a singular theory of evolution. It is sometimes referred to as the Neo-Darwinian theory.

It refers to evolution as "changes in allele frequencies within populations," in order to explain the genetic basis of evolution. The random genetic drift, gene flow, mutation pressure, and natural selection are seen to cause changes in allele frequencies. Resulting in several differences that can be seen gradually over a particular period in time.

In the Modern Synthesis, mechanisms of evolution and not natural selection takes a major role and it explains the continuance of genetic variation going along with Gregor Mendel's particulate theory of inheritance, where the alleles of a gene remain as individual entities rather than merging.

The major key players of the Modern Synthesis are R. A. Fisher and Sewall Wright (worked on population genetics), Theodosius Dobzhansky (studied the fruitfly Drosophila), Ernst Mayr (models of how speciation occurs), George Gaylord Simpson (introduced paleontological observations into Modern Synthesis) and G. Ledyard Stebbins (added some principles as a result of his botanical studies).

6 0

4 years ago

100 POINTS!!! Plz describe this (and don't answer this just for the points like actually help me this is 60% of my grade) I coul

Lerok [7]

<h3>Thank you for asking your question!</h3><h3>Have any more questions? Just ask!</h3><h3 />

Answer:

Mitochondria:

An organelle found in large numbers in most cells, in which the biochemical processes of respiration and energy production occur. Also known as the 'powerhouse of the cell.'

Cell wall:

A cell wall is a structural layer surrounding some types of cells, just outside the cell membrane. It can be tough, flexible, and sometimes rigid. It provides the cell with both structural support and protection, and also acts as a filtering mechanism.

Nucleus:

The positively charged central core of an atom, consisting of protons and neutrons and containing nearly all of the cell's mass.

Golgi bodies:

The Golgi apparatus, also known as the Golgi complex, Golgi body, or simply the Golgi, is an organelle found in most eukaryotic cells. Part of the endomembrane system in the cytoplasm, it packages proteins into membrane-bound vesicles inside the cell before the vesicles are sent to their destination.

ER (Endoplasmic Reticulum):

A network of sac-like structures and tubes in the cytoplasm (gel-like fluid) of a cell. Proteins and other molecules move through the endoplasmic reticulum. The outer surface of the endoplasmic reticulum can be smooth or rough.

Cell Membrane:

The plasma membrane, or the cell membrane, provides protection for a cell. It also provides a fixed environment inside the cell, and that membrane has several different functions. One is to transport nutrients into the cell and also to transport toxic substances out of the cell.

Ribosomes:

A sphere-shaped structure within the cytoplasm of a cell that is composed of RNA and protein and is the site of protein synthesis. Ribosomes are free in the cytoplasm and often attached to the membrane of the endoplasmic reticulum. Ribosomes link amino acids together in the order specified by the codons of messenger RNA molecules to form polypeptide chains.

Cytoplasm:

The cytoplasm provides a medium for the organelles to remain suspended. The cytoplasm acts as a buffer and protects the genetic material of the cell and also the cellular organelles from damage caused due to movement and collision with other cells. Cytoplasm is a thick solution that fills each cell and is enclosed by the cell membrane. It is mainly composed of water, salts, and proteins. In eukaryotic cells, the cytoplasm includes all of the material inside the cell and outside of the nucleus.

Hope this helps!

6 0

3 years ago

Read 2 more answers