Allele definition...

2 answers:

7 0

<span>one of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome.hope this helps :)</span>

mote1985 [20]3 years ago

3 0

<span>one of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome</span>

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Active and passive immunity involves all of the following except receiving mother's antibodies through breast-feeding. exposure

Bingel [31]

Explanation:

Immunity is the ability of an animal to resist infection.

There are two types of immunity in the body; INNATE OR INHERITED IMMUNITY AND ACQUIRED IMMUNITY. Inherited immunity it is the type of immunity that one is born with. It is passed from parent to offspring.

Acquired immunity is immunity to particular infections that is not inherited but has developed in the animal's life as it interacts with its environment. Acquired immunity can develop naturally in which case it is called NATURAL ACQUIRED IMMUNITY OR ARTIFICALLY.

ACTIVE IMMUNITY is the form of acquired immunity in which the body produces its OWN antibodies against infections. While PASSIVE IMMUNITY is the form of acquired immunity in which an individual is PROTECTED AGAINST INFECTION BY RECEIVING ANTIBODIES.

NATURAL ACQUIRED IMMUNITY

when attacked by the same pathogens again, they don't became seriously ill. this is because memory cells are able to recognise the antigens and stimulate the immune system to produce antibodies against the pathogens. This is known as NATURAL ACTIVE ACQUIRED IMMUNITY. It develops when one recovers from an infection.

During pregnancy, the mother passes antibodies across the placenta to the foetus. At birth the baby gets antibodies from the mother through breast milk. This is natural passive acquired immunity.

3 0

2 years ago

Which statement about cellular respiration is true?

qaws [65]

It is used by every living cell.
Cellular respiration is a process of combining oxygen with foodstuff molecules, diverting the chemical energy in these substances into life-sustaining activities and discarding, as waste products, carbon dioxide and water.

3 0

3 years ago

Because it is difficult to excrete iron once it is in the body, iron balance is maintained primarily through absorption. The iro

Rzqust [24]

<h2>The given statement is true</h2>

Explanation:

Iron absorption occurs in the duodenum and upper jejunum of small intestine

At physiological pH ferrous iron is rapidly oxidized to the insoluble ferric form
Gastric acid lowers the pH in the duodenum which enhances the solubility and uptake of ferric iron
Once iron gets inside the enterocyte it can be stored as ferritin;Ferritin is a hollow spherical protein which helps in storage and regulation of iron levels within the body
Ferritin molecule have ferroxidase activity which helps in the mobility of Fe2+ out of the enterocyte by ferroportin
Transferrin is the major iron transport protein which transports iron through blood
Fe3+ binds to transferrin so Fe2+ transported through ferroportin must be oxidized to Fe3+
Fe2+ needs to be oxidized first so that it can be transported through ferroportin
Once iron gets inside the cell it can be used for various cellular processes

6 0

3 years ago

A student completed a lab report. Which correctly describes the difference between the “Question” and “Hypothesis” sections of h

Alisiya [41]

A question is something someone asks. A hypothesis is like a person's theory.

7 0

3 years ago

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What is a void?

snow_tiger [21]

2 is the right answer

4 0

3 years ago