-
Prokaryotes are unicellular organisms, and a prokaryote is made up of a prokaryotic cell, and the emphasis on both is different, with the former emphasizing a living organism and the latter emphasizing a cell. Their genetic material can only be DNA. Viruses are divided into two types: DNA viruses and RNA viruses, and the rest of the biological genetic material with cellular structures is DNA
-
Prokaryotic cells are said from the perspective of the basic units of organisms, and prokaryotes are said from the taxonomic status of organisms. Prokaryotes are unicellular organisms. The genetic material is both RNA and DNA.
-
Prokaryotes Definition: Organisms made up of prokaryotic cells. Nuclei and other organelles in cells without a membrane enclosure. Such as bacteria, cyanobacteria, mycoplasma, and chlamydia. Together with paleokaryotes and eukaryotes, they constitute the three major evolutionary lineages of modern organisms.
-
Prokaryotic cells and prokaryotes can be seen as one and the same concept because all prokaryotes are unicellular and this cell is the prokaryotic cell. Their genetic material is DNA. Remember, only a few viruses have RNA (e.g., influenza virus, HIV), and all other organisms have DNA.
-
Prokaryotic cells are classified from the perspective of cells, and prokaryotes are classified from the perspective of organisms. Prokaryotes are all made up of prokaryotic cells, they are mostly unicellular, and the genetic material is all DNA. The genetic material of some viruses is DNA, such as bacteriophages; Some viruses have RNA in their genetic material, such as tobacco mosaic virus.
-
Prokaryotes are analyzed from the perspective of biological taxonomy, prokaryotic cells are analyzed from the constituent units, the genetic material of prokaryotes can only be DNA, while the genetic material of viruses is DNA, such as bacteria and viruses Most of the genetic material is DNA, and some are RNA, such as HIV, influenza virus, etc.
-
It seems that I only know 17 questions and choose D ......The task is so difficult.
It is pyruvate and not glucose that can enter the mitochondria, so C is wrong.
-
Question 23 C is false, deoxyribose does not have phosphorus and is a monosaccharide, C5H10O4
32 questions choose C
Insect resistance genes don't necessarily have antibiotic resistance, right? Moreover, the marker gene is not necessarily introduced into cotton cells along with the insect resistance gene. Here, the antibiotic gene, the insect resistance gene, and the marker gene are three different genes and cannot be confused. >>>More
Semi-preserved replication is the two strands of newly formed DNA, one of which is newly synthesized and the other is the original parent strand.
AABB, black female A B x brown AAB , to get AAB, obviously black female dog also provides AB >>>More
There are no creatures in the first year of high school.
The aerobic respiration reaction formula is: C6H12O6 + 6H2O+6O2---6CO2 + 12H2O+ energy, so it inhales 6 oxygen and releases 6 carbon dioxide, and the anaerobic respiration reaction formula is: C6H12O6---2C2H5OH+2CO2+ energy, so it releases two carbon dioxide, and the last aerobic respiration releases six carbon dioxide, adding together is eight, 8: