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hram777 [196]
3 years ago
7

Which event marks the beginning of the cambrian era?

Biology
1 answer:
Scilla [17]3 years ago
5 0

Answer:

D) largest mass extinction event in Earth's history

Explanation:

The cambrian era started following the pre-cambrian extinction

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The plants, animals, water, and soil of a forest is an example of?
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The answer is Habitat
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3 years ago
Use the codon chart to convert this sequence into an amino acid: UCU-CGA-GCC-GUU-GGG-UGA
RUDIKE [14]

The answer is Ser-Arg-Ala-Val-Gly-STOP


It is known that three nucleotide bases on mRNA are called codon and that each codon codes for the specific amino acid. According to the genetic code chart, the following mRNA sequence will code for the following amino acid sequence:

mRNA sequence:       <span>UCU CGA GCC GUU GGG UGA</span>

Amino acid sequence: Ser   Arg    Ala   Val    Gly   STOP

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3 years ago
Read 2 more answers
The secretions of the adrenal medulla act to supplement the effects of ________.
Nutka1998 [239]

Answer:

sympathetic stimulation

Explanation:

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7 0
3 years ago
Which of the following INCORRECTLY describes a polymer? Which of the following INCORRECTLY describes a polymer?
Len [333]

Answer:

A. ATP is a polymer of phosphates.

Explanation:

ATP is not a polymer of phosphates. It is a rather a complex organic molecule that has its main function to provide energy.

Starch and glycogens are polysaccharides or polymers of glucose or simply put, they have glucose subunits.

Nucleotides are biological molecules consisting of 3 major sub units which are the nitrogenous base, the phosphate acid and the 5 carbon (ribose) sugar. They are the building blocks of DNA and RNA and hence monomers.

Amino acids are basically organic compounds that contain amine (-NH2) and carboxyl (-COOH) functional groups, along with a side chain (R group) specific to every amino acid molecule. They are bond together by a peptide bond between the -NH2 and -COOH group to furthet form polypetides. Proteins in the same vein are called polypeptides which is a chain of amino acids.

7 0
3 years ago
The chemical reactions involved in respiration are virtually identical between prokaryotic and eukaryotic cells. In eukaryotic c
solniwko [45]

Answer: d. on the plasma membrane

Explanation: Prokaryotic cells also synthesis ATP the limitations is that enzymes required for the synthesis of ATP are attached to the cell membrane which surrounds the cell. ATP synthesis complex of prokaryotic cells are embedded in the cell membrane. Prokaryotes lack mitochondrial/thylakoid membrane so therefore, ATP is produced on their cell surface membrane.

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3 years ago
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