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kvv77 [185]
3 years ago
12

During which period did mammals first appear?

Biology
2 answers:
Anit [1.1K]3 years ago
7 0

Answer:

The correct answer is - d. Jurassic.

Explanation:

algol [13]3 years ago
3 0

Answer:

the Triassic Period

Explanation:

hope it helps

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Is paramecium a unicellular or multicellular organism
Ksivusya [100]
<h2>Answer:</h2>

Paramecium is the single celled organism (unicellular).

<h3>Explanation:</h3>
  • An organism which contain only one cell is known as unicellular organism.
  • Paramecium is the unicellular parasite. It can move and digest food.
  • In its structure there are food vacuoles for the digestion of food.
  • Paramecium is the eukaryotic organism because it has a well organised cell with distinct nuclear membrane.
  • It belongs to kingdom protista.
5 0
3 years ago
How many moles are present in 10, 0 grams of sodium hydroxide (NaOH )
Korvikt [17]

Answer:

19 gram of molecule are present in NaOH

Explanation:

because of 10 gram we put in NaOH it is incomplete if we put 9 gram in NaOH it is complete NaOH =11+8+1 =19

7 0
2 years ago
Read 2 more answers
A protein can begin to fold and to bind to other proteins while still being synthesized on the ribosome. True False
Gennadij [26K]

Answer: Yes

Explanation:

his amazing artwork shows a process that takes place in the cells of all living things: the production of proteins. This process is called protein synthesis, and it actually consists of two processes — transcription and translation. In eukaryotic cells, transcription takes place in the nucleus. During transcription, DNA is used as a template to make a molecule of messenger RNA (mRNA). The molecule of mRNA then leaves the nucleus and goes to a ribosome in the cytoplasm, where translation occurs. During translation, the genetic code in mRNA is read and used to make a protein. These two processes are summed up by the central dogma of molecular biology: DNA → RNA → Protein.

4 0
3 years ago
Write the correct steps of dna replication in the order that they occur.
Serhud [2]

Answer:. Initiation- elongation- termination

Explanation: The first step, initiation, is when the DNA unzips and unfolds thereby leading to a breakage of the bond (hydrogen bond) with holds the bases of the DNA together, giving free strands of DNA.

Secondly, the elongation step. A piece of RNA binds to the DNA strand and also an enzyme known as DNA polymeraseIII binds to the piece of RNA (primer). This binding leads to the addition of newer base pairs to the strands thereby elongating it.

Then the termination step, once the strands are formed, those RNA primers are removed from the strand by the action of an enzyme called exonuclase and are being replaces by the appropriate bases.

7 0
3 years ago
Read 2 more answers
Using the DNA strand below, select the answer choice that displays the correct polypeptide sequence. DNA TAC/GCA/TTA/GGC/AAC/ACT
joja [24]

Answer:

d Meth-Arg-Asn-Pro-Leu-stop

Explanation:

This question is describing the processes of transcription and translation of protein synthesis. Transcription is the synthesis of mRNA from DNA while translation is the synthesis of amino acid from mRNA. In this question, the following DNA sequence is given:

TAC/GCA/TTA/GGC/AAC/ACT

- Following the complementary base pairing rule i.e A-U, G-C, T-A etc, the following mRNA transcript will be produced after transcription:

AUG/CGU/AAU/CCG/UUG/UGA

- Using the genetic code, the following amino acid sequence will be produced from the above mRNA sequence after translation:

Methionine/Arginine/Asparagine/Proline/Leucine/STOP.

7 0
2 years ago
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