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shusha [124]
3 years ago
13

Types of chlorophyll in p680 and p700 and why it matters

Biology
1 answer:
Bingel [31]3 years ago
4 0
P700 is photosystem I. It includes chlorophyll a 670, 680, 695, 700, Chlorophyll b, carotenoids. The active reaction center of photosystem is p700, as it absorbs light of a wavelength longer than 680nm.
P680 or the photosystem II has the following pigments: chlorophyll b, 660, 670, 680, 695, 700, phycobilins, and xanthophylls. The active reaction center, in this case, is p680 of chlorophyll a, as it absorbs the light having a wavelength shorter than 680nm.
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Prokaryotic bacteria are surrounded by a ____________ that contains the ____________ to regulate the entry and exit of materials
lukranit [14]

Prokaryotic bacteria are surrounded by a cell membrane that contains the transport proteins to regulate the entry and exit of materials through the cell, the cell wall to help maintain cell shape and structure, and the capsule, which aids against drying out and protects bacteria from a host's immune system.

<h3><u>Explanation:</u></h3>

Bacteria are the prokaryotic organisms that are found in every part of Earth. These organisms do have an interesting ultrastructure. The coverings of the bacteria are three in layer. They are

A. The outer capsule.

B. The middle cell wall.

C. The inner cell membrane.

The capsule is the outermost covering of bacteria that is formed of different slimy materials. These materials contains hygroscopic substances which can absorb water from the surroundings even when the water concentration in outside is very very low. This layer of protection outside bacteria help them to protect themselves against drying out at dry conditions.

The middle cell wall is formed of polymers of N acetyl glucosamine and N acetyl muramic acid. This layer is chitin in nature and is strong enough to maintain the shape and size of bacteria irrespective of outer conditions.

The innermost layer of bacteria is cell membrane which is formed of proteins and lipids bilayer and this cell membrane contains different transport for proteins which help in transport of different substances like water and nutrients inside the cell by means of active transport or passive diffusion.

6 0
3 years ago
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The cellular organelle primarily responsible for transforming the chemical energy found in nutrients into ATP is the
spayn [35]

Answer:

the organelle responsible4 chem energy to ATP, is the mitochondria...

Explanation:

The mitochondria is responsible 4 packaging protein into energy the cells of the body can use 4 energy..

7 0
3 years ago
Which statement describe the advantages of sexual reproduction? Check all that apply
Nadya [2.5K]
Well, there is nothing given to list, but I kinda know because I actually liked biology class.

Advantages include:
Variation in offspring - this is really important to the survival of a species. Variety in DNA allows an offspring child thing being to be able to adapt to new environments and immune system attack and evolve gaining better and better traits for survival.
It also increases the chance of at least some offspring.
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Crustacea(ns) form a very large group of arthropods.
3 0
3 years ago
What is a major difference between facilitated diffusion and active transport?
Novay_Z [31]

Answer:

Major difference between active transport and facilitated difusion is:

Active transport moves substances against the concentration gradient.

Facilitated diffusion moves molecules through the plasma membrane.

Explanation:

  • Active transport involves the transport of molecules against the concentration gradient.
  • Since molecules move from lower concentration to higher concentration this mode of transport needs energy.
  • Facilitated diffusion do not require energy  but need some other molecule or carrier protein to transport the molecules across the membranes.
  • In facilitated diffusion, the molecules move from their region of higher concentration to the region of lower concentration.
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3 years ago
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