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Marta_Voda [28]
4 years ago
6

In cell A, what structure is labelled X?

Biology
2 answers:
elixir [45]4 years ago
5 0
No picture of a cell is provided
Archy [21]4 years ago
4 0
I don’t see any picture of cell


Explanation

Reference not given
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In pea plants,the allele for the tallness is dominant.what are the possible genotypes of a tall pea plant
mote1985 [20]

Mendel discovered the fundamental laws of inheritance through his work on pea plants. He used around seven plant traits of which, length of the stem was also considered and hybridization between the tall plants (TT) and the dwarf plants (tt) was conducted.

Alleles refers to the alternative forms of a gene. They are the recessive and the dominant alleles. According to Medel's law of dominance, the recessive alleles are masked by the dominant alleles. In pea plants, the allele for tallness is dominant. It expresses itself in both the homozygous dominant condition and the heterozygous dominant condition. Thus, the possible genotypes of a tall pea plant are TT and Tt.

7 0
3 years ago
Why should/shouldn't Pluto be reclassified as a planet?​
Scorpion4ik [409]

Answer:

(This could be opinion based, but ok.)

Explanation:

should:Pluto was known as a planet for 75 years. This means that most people already knew it as a planet, and would be extremely confused. All of the books about planets would be inaccurate and changed. Not all people can access brand new books, leading to inaccurate information.

shouldn't: The same reason that it was unclassified as a planet. It does not adhere to all of the rules of being a planet. It is not completely round and does not have a round orbit around the sun. Pluto does not have every requirement to be a real planet, and therefor, it would be incorrect to have it classified wrongly.

8 0
3 years ago
Most species of cyanobacteria are enclosed in a _____.
Natali [406]

Answer: mucilaginous sheath

Explanation:

These algae are known as "blue algae" because of their pigmentation or "cyanobacteria" because they are prokaryotes. Microbiologists classify cyanobacteria in the realm of Eubacteria. They are the only prokaryote algae. The cellular organization is prokaryotic, without nuclei or organelles. Respiration takes place at the level of plasmalemma and thylakoids. In the center (nucleoplasm), cells contain their genome and circular plasmids. Cyanobacteria often also have a mucilaginous sheath common to many trichomes.

These organisms contain several carotenoid pigments, particularly myxoxanthophyll, which does not occur in any other algae group. Some cyanobacteria are strictly phototrophic, others are optional: they are phototrophic when in the presence of light, but may grow in obscurity using an organic carbon source. Others can use a source of organic carbon as well as inorganic carbon, but only in the presence of light.

8 0
3 years ago
Energy can never be created nor destroyed, just blank and blank.
andrew-mc [135]
Just changed and transferred
3 0
3 years ago
Which group of non-prokaryotic organisms studied in microbiology typically have two life cycle stages: trophozoite and cyst?
uranmaximum [27]

The correct answer is Protozoa.

A class of single-celled, non-prokaryotic organisms known as protozoa.These could either be parasitic or free-living in nature. These are heterotrophs that procreate via binary fission in an asexual manner. Numerous unrelated or tangentially related organisms make up the Protozoa. Sarcodina, Flagellates, Ciliates, and Sporozoans are the four main divisions. There are two stages in the life cycle of certain protozoa: the proliferative stage (trophozoites), and the resting stage (cysts). Trophozoites are the proliferative stage of the protozoa, which is when they divide and reproduce. The protozoa can tolerate adverse environmental circumstances like toxic chemicals, intense heat, and nutrition and water shortages because of their resting cyst shape.

Learn more about Protozoa here:-

brainly.com/question/2937170

#SPJ1

7 0
2 years ago
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