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Elena-2011 [213]
3 years ago
10

Pollen is produced in structure H what is the structure called?

Biology
2 answers:
soldi70 [24.7K]3 years ago
8 0

Answer: Pollen is produced in the the stamen. Pollen is the “sperm” of the plant. Wind or water will transport it to another plant. The plant is fertilized and will later produce seeds.

Vedmedyk [2.9K]3 years ago
8 0

Answer:

Anther

Explanation:

Stamen, the male reproductive part of a flower. In all but a few extant angiosperms, the stamen consists of a long slender stalk, the filament, with a two-lobed anther at the tip. The anther consists of four saclike structures (microsporangia) that produce pollen for pollination.

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Type of microscope that can maginify up to 2 million times
frutty [35]
They are called transmission electron microscopes.
4 0
3 years ago
Dude why is bio so hard please help lol
Evgesh-ka [11]

Answer:

1.Sugar bonds

2.Transport proteins

3. Digestion

4. Oxidation

explanation

Chemical energy is stored in the bonds of sugar.

The concentration gradient of a substance across the membrane represents potential energy bcz it drives diffusion.Transport proteins aids the diffusion.

Digestion converts chemical energy into kinetic energy used by cells.

When the electrons are destroyed in the glucose,Energy contained in the bonds is released in small bursts,some of it is captured in the form of ATP .'The electrons are transferred to smaller molecules known as electron carriers.The electron carriers take the electrons to a group of proteins in the inner membrane of the mitochondrion,called the electron transport chain.As electrons move through the electron transport chain they go from a higher to lower energy level and are finally passed to Oxygen to form water.The energy released is captured as a proton gradient which powers the production of ATP.

Not 100% sure whether it's the correct answer but the concept is true 100% btw I stand to be corrected

4 0
2 years ago
How do identical twins form?
Evgesh-ka [11]
The answer is A.

Twins form in one of two ways:
Identical twins occur when a single fertilized egg splits into two.
Fraternal twins occur when two, separate eggs are fertilized by two, separate sperm.
8 0
3 years ago
Read 2 more answers
Which factor would contraindicate the use of disulfiram in the treatment of a client who has an alcohol use disorder?
vodka [1.7K]

Answer;

The client had six drinks a few hours ago.

Explanation;

-Disulfiram is used to treat chronic alcoholism. It causes unpleasant effects when even small amounts of alcohol are consumed.

-The drug can stay in the body for up to two weeks and can make patients feel sick any time they consume alcohol during that period. In fact, alcohol ingestion has been known to produce the same unpleasant effects 1-2 weeks after a person has taken her last dose of disulfiram.

6 0
3 years ago
Many useful products, mainly for medical purposes, are produced by cloning human genes into other organisms, which then mass-pro
ANEK [815]

Answer:

The correct answer is : A.

Explanation:

  • This is because of the following reasons:
  1. Escherichia coli is a bacteria and hence is a prokaryote.
  2. The cloning of human (eukaryote) genes is done to obtain in-vitro protein expression which are to be used a pharmaceutical compounds.
  3. Although the phenomenon of Central Dogma takes place in both Prokaryotes and Eukaryotes, the mechanism is very different.
  4. Some of the differences includes:
  • Eukaryotic genes contain certain non-protein encoding sequences called the Intron sequences which needs to be removed from the transcribed mature mRNA by Spliceosome. This phenomenon is absent in prokaryotes as they do not possess introns. Hence, proper processing of eukaryotic mRNA is not possible in prokaryotes.
  • The mature eukaryotic mRNA has a 5' cap and 3' polyadenylated tail which is added by a capping enzyme and a poly-A polymerase enzyme to increase their stability. This will not be possible in a prokaryote as they lack these enzymes.
  • The translation of membrane proteins and secretory proteins is carried on by the ribosomes bound to the endoplasmic reticulum. This structure is absent in prokaryotes, hence they will be unable to produce a proper polypeptide sequence.
  • Finally, the eukaryotic proteins undergo various modifications after formation, like methylation, acetylation, etc. These reactions cannot be carried out in a prokaryote as they lack the respective enzymes.
  • Hence, we see a properly folded functional eukaryotic protein cannot be produced in a prokaryote.

6 0
3 years ago
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