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NNADVOKAT [17]
3 years ago
6

There are various hypotheses as to the origin of prokaryotic and eukaryotic cells. Because all cells are similar in nature, it i

s thought that all cells came from a common ancestor cell called the last universal common ancestor or LUCA. The LUCAs evolved into three different cell types, each representing a domain in the modern system of classification. The three domains are the Archaea, the Bacteria, and the Eukarya. We know that all three domains are cellular in nature, but they have one other feature in common. And this second common feature helped provide the biochemical evidence to support this newest step in classification. Cite the evidence utilized in this classification scheme.
Biology
2 answers:
Paha777 [63]3 years ago
7 0

Answer:

D

Explanation:

Organisms can be classified into one of three domains based on differences in the sequences of nucleotides in the cell's ribosomal RNAs.

RSB [31]3 years ago
4 0

Answer: D

Explanation: took the usatestprep quiz

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(d) Referring to Figure 1B, explain why any newly synthesized strand of DNA is the result of both continuous and discontinuous D
stepladder [879]

Answer:

The DNA polymerase is the enzyme which copies in the direction of 5' to 3' in the leading strand and in case of lagging stand it is opposite. that is from the 3' to 5'.

Replication in the 3' to 5' takes place in the fragments which is laid by the Okazaki fragments. These small fragments are kept together by the help of the enzyme known as DNA Ligase. So, called as discontinues

Incase of leading strand, the  strand is in the same direction of the for the process of replication (5' to 3'). So it is continuous.

Hence, the whole process is a combination of continuous and discontinuous DNA synthesis.

8 0
4 years ago
Can anyone help me in this question
sleet_krkn [62]

Answer:

A. Many species will go extinct.

Explanation:

If many habitats are being destroyed, the organisms living there will be negatively impacted. Their population won't increase. Evolution also does not happen quickly, it happens over time.

8 0
3 years ago
Alguem me ajuda com a primeira lei de Mendel?? Sobre qual era os cuidados que ele usava ao cruzar dois tipos de plantas
miss Akunina [59]

La primera ley es llamada la ley de la uniformidad de los híbridos de la primera generación filial. Y esta dice que al cruzar dos variedades cuyos individuos tienen razas puras ambos homocigotos para un determinado carácter), todos los híbridos de la primera generación son similares.

8 0
4 years ago
Which of these human behaviors has the least potential to harm the environment
miskamm [114]
Sleeping but I don’t know if you have any multiple choice answers
6 0
4 years ago
2. The anther at the top of the stamen has _
JulsSmile [24]

Answer:

              Anther contain saclike structure called microsporangia that have micrspores mother cells that develop in to male gametophyte

Explanation:

                     Sporangia cosist of microspores mother cells and megaspores mother cells in land plant that develops in to male and female gametophyte respectivelly. Then latter on the male gametophyte gie rise to male gametes and female gmetophyte give rise to female gametes and after fusion of the gametes an other gametophyte is arise which give rise to sporophyte and thr sporophyte give rise to gametophtye which is called alternation of generation.

5 0
3 years ago
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