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zheka24 [161]
3 years ago
9

Some viruses can enter cells by first attaching to the cell membrane. The flu virus targets and attaches to the cells of the nos

e and mouth. The hepatitis virus targets only specific cells of the liver.
State one way the immune system reacts when one of these viruses enters the body ?
Biology
1 answer:
Vilka [71]3 years ago
8 0
They make memory cells to store info about how the virus was defeated
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Myoglobin transfers oxygen obtained from hemoglobin to mitochondrial proteins involved in the catabolism of metabolic fuels to p
mario62 [17]

Answer:

Explanation:

Mitochondria is a double membrane bound organelle that is located in most eukaryotic organisms and it has a number of different shapes.

A mitochondrion has a outer and inner membranes made up of phospholipid bilayers and proteins which have different properties. Because of the double membraned organization, mitochondria have five distinct parts:

Outer mitochondrial membrane

Intermembrane space which is the space between the outer and inner membranes

Inner mitochondrial membrane,

the cristae space which is formed by the folding in of the inner membrane and

matrix which is the space within the inner membrane.

Mitochondria has a complex structure that allows for all the activities carried out by it this includes,Energy conversion, Pyruvate and the citric acid cycle, NADH and FADH2 which are the electron transport chain, Heat production and Storage of calcium.

7 0
3 years ago
In the chemical process of photosynthesis, water is a
goblinko [34]
Water is a Reactant
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3 years ago
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The electrons of photosystem I A. attach to water molecules during the light reaction. B. produce molecules of oxygen that enter
Sergeeva-Olga [200]

Answer:d.are eventually replaced by electrons from photosytem 11

Explanation:there are two photosystems in the photosynthetic process.PSI and PS II. PS I has a reaction center called P700 because it's chlorophyll has a maximum absorption of 700nm wavelength.PSII has a reaction center called P680nm for similar reason.when an excited electron is transferred to P700,it becomes excited.this electron is passed down from from acceptor to another, until it is used to reduce NADP+ to NADPH.this electron is replaced when P680 gets excited by a photo of light and splits water to release electrons , protons and Oxygen

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3 years ago
Which conditions need to be in balance for cells to function? Check all that apply.
sergejj [24]
For body cells to function properly, the following conditions need to be balanced:
1. BLOOD SUGAR
2. BODY WATER
3. BODY TEMPERATURE.
These three factors have to be in the right proportion for the cells and the body as a whole to function properly and to maintain homeostasis.
Blood sugar is the source of energy in the cell and it is required by all cell for carrying out the normal biochemical reactions in the body. The biochemical reactions in the body use water as a medium of reaction, thus the water balance in the body must be maintained. The body temperature also need to be kept at the normal level or else the normal biochemical reaction of the body will not be able to take place, due to the fact that incorrect temperatures deactivate the enzymes that mediate biochemical reactions.
5 0
3 years ago
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Human cells have 46 chromosomes. Each chromosome consists of a pair of identical chromatids attached together by a structure cal
nevsk [136]

Answer:

The answer is 46 chromosomes.

Before mitosis, cell duplicates its DNA material so there are 46 chromosomes in duplicates and in total there are 46 x 2 = 92 sister chromatids. During mitosis, sister chromatids first join in the middle of the cell and then separate towards the opposite sides of the cell. After they separate, there are 46 sister chromatids on the one side and 46 sister chromatids on the other side. Each sister chromatid at the end of cytokinesis actually represents the chromosome of the newly formed daughter cell.

Explanation:

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