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zhannawk [14.2K]
3 years ago
7

What is a vaccination? It's not A

Biology
2 answers:
enot [183]3 years ago
8 0
The answer to this question is C
Nesterboy [21]3 years ago
7 0

An injection of weakened bacteria that creates immunity to a disease.

Option c is the correct answer

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Organisms that swim freely and maneuver actively in the water column are called what?
ohaa [14]

Answer:

Zooplankton - Animals (mostly microscopic) which drift freely in the water column.

Explanation: Zooplankton, small floating or weakly swimming organisms that drift with water currents and, with phytoplankton, make up the planktonic food supply upon which almost all oceanic organisms are ultimately dependent.

Hope this helped!!

4 0
4 years ago
What evidence must be considered when determining whether or not a trail is adaptation?
Dmitry [639]
An adaptation is a trait that "evolved" for a particular condition that allows the animal to survive. Something is adaptive if it is a useful trait but not necessarily one that occurred in response to a particular selection pressure. Basically a trait is an adaptation if it is the product of selection, and adaptive if it is beneficial in the present time.

Read more on Brainly.com - brainly.com/question/1946228#readmore
4 0
3 years ago
Read 2 more answers
When ATP loses a phosphate, energy is released ________ and is formed.<br> What is the blank??
Alexus [3.1K]

When ATP loses a phosphate, energy is released and ADP is formed



5 0
4 years ago
Read 2 more answers
After performing a gram stain of a mixed culture of gram positive and gram negative cells, you shout: "oops, i forgot the iodine
zalisa [80]

Gram's staining is a differential staining technique that employs a primary stain like crystal violet and a counter stain like safranin along with the decolourizing agent alcohol and a mordant called the Gram's iodine.

Iodine is a mordant added after the primary stain. It fixes the stain by combining with it to enchance the staining ability. This forms an insoluble crystal violet iodine complex appearing purple under the microscope. These microorganisms are classified as Gram positive.

If addition of iodine is skipped, crystal violet is not fixed on the slide and the insoluble complex is not formed. The cells are decolourized by alcohol and are stained by the counter stain safranin making the Gram positive cells wrongly indentified as Gram negative due to its pink colouration. Thus, the slide will show all the cells as pink coloured Gram negative cells.

3 0
3 years ago
Vascular plants exhibit alternation of generation. What is alternation of generation?
Crazy boy [7]
<span>Alternation of generation is what happens in the asexual reproduction of vascular plants in their gametes, as haploid cells that came from their gametes, spores fertilizes another plant becomes a diploid cell in the process.

In terms of vascular plants, they help maintain the water cycle. The property of these plants enables them to carry out this function is their well-developed vascular system. These type of plants are more evolved and developed than nonvascular plants because of its specialized characteristics like xylem, which is a tissue that is responsible for its framework and not only that, it is also has a greater mechanism for water transference. Another is phloem, which is responsible for food conduction.<span>
</span></span>
8 0
3 years ago
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