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tensa zangetsu [6.8K]
3 years ago
15

Why did the samples agglutinate in positive tests?

Biology
1 answer:
Elenna [48]3 years ago
8 0
The samples did not agglutinate with any of the positive tests because antigens were present.
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Match the following. 1. an act of fertilization involving the transfer of cell contents to another cell; usually occurs in simpl
Nuetrik [128]

Answer:

1. Conjugation

2. Diploid

3. External fertilization

4. Fertilization

5. Haploid

Explanation:

Conjugation is a cell-to-cell encounter between bacteria cells. The bacteria come close to each other and DNA is then transferred through a tube-;ike structure called pilius.

The difference between diploid and haploid is that diploid organisms have chromosomes that come in pairs. The chromosomes are paired up with another chromosome that is similar in shape and size and that is why they are called homologous pairs. Haploid on the other hand do not come in pairs. In human beings for example, the egg cell and sperm cell are haploid, only having one homologous chromosome. When they join together during fertlization, they form a diploid.

Fertilization is the union of gamete cells, male and female, which result in the formation of a zygote. There are two types of fertilization, internal and external. Internal fertilization occurs when the union of the sex cells (gametes) occur inside the organism. You would see this in humans, where fertilization occurs in the womb. External fertilization occurs when the union occurs outside the organism and a good example of this would be fish. The female expels it's eggs into the water and the male would release its own sex cells as well, and they would join in the water.

7 0
4 years ago
True/False: The HARDER the surface, the more sound is ABSORBED
ladessa [460]

Answer:

true.

Explanation:

In general, soft, pliable, or porous materials (like cloths) serve as good acoustic insulators - absorbing most sound, whereas dense, hard, impenetrable materials (such as metals) reflect most.

good luck!! <3

8 0
3 years ago
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Which statements describe the universe during the big bang? Check all that apply.
Maslowich
We can't answer this question without the applies
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3 years ago
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Genetic engineering involves using __________ DNA to introduce new genes to organisms.
Flura [38]
Genetic engineering involves using <span>recombinant</span> DNA to introduce new genes to organisms.
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4 years ago
Precapillary sphinctersa. serve as valves in veins. b. are found in the tunica media. c. carry blood under high pressure. d. con
KengaRu [80]

Answer:

D. Control the blood flow into the capillary bed

Explanation:

The degree of filling of the capillary bed and level of arterial pressure within the vascular system is determined mainly by the degree of tonus (firmness) in the smooth muscle of the arterial wall. Arterioles have relatively narrow lumina, thick muscular wall and precapillary sphincter.

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4 years ago
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