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raketka [301]
3 years ago
6

Dr. Mehini discovered an organism while using a light compound microscope in his Biology Lab at the University of Central Florid

a. He immediately observed the organism being propelled around the field of view. Which of the following best describes the source of the movement?
Biology
1 answer:
Nutka1998 [239]3 years ago
3 0

Answer:

<u>the organism was moving using flagella.</u>

Explanation:

Flagella is a locomotory structure that is found in most protozoan. The organisms for kingdom proctista dwell in ponds and streams. Under a light-compouund microscope, they can be observed to be moving.

In addition, there are other locomotory structures including cilia for Paramecium, pseudopodia for Amoeba, flagellum for Euglena and undulating membrane for Trypanosome.

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Use your knowledge of the structure of DNA to circle a nucleotide on the image below.<br>​
My name is Ann [436]

Answer:

Im not sure how to circle but the three components should be circled...

Explanation:

There are 8 nucleotides in this picture.

A nucleotide consists of a phosphate group (the blue circle), a pentose sugar (the blue pentagon), and a nitrogenous base (the red, green, purple, and yellow hexagons). One nucleotide would only have one of the nitrogenous bases.

4 0
3 years ago
Read 2 more answers
Consider the cross Aa BB Cc dd X Aa bb cc Dd. Assume that the four allelic pairs assort independently. (a) How many different ty
Ksivusya [100]

Answer:

The parent with the genotype Aa BB Cc dd can produce 4 different types of gametes.

Explanation:

<em>The law of independent assortment states that the alleles for a trait separate when gametes are formed. </em>

In the parent genotype Aa BB Cc dd, the allelic pairs with variation present are Aa and Cc. Therefore, the source of variation in the possible combinations  during meiosis, largely arises from these 2 allelic pairs.

Independently assorting these pairs, we have ; A, a, B, B, C, c, d, d

The possible combinations therefore are:

  • ABCd
  • ABcd
  • aBCd
  • aBcd
3 0
3 years ago
Punnett Squares are used by geneticists to determine the likely genotypes of the offspring of two parents.
PilotLPTM [1.2K]
That's correct - it's a square where on one axis, the paternal allele (allele = one of the possible forms of the same gene), and on another the maternal allele is listed. Often, it's also indicated whether an allele is recessive or dominant.

Then, in the table that results, all the possible "combinations" of allele between the paternal and maternal party are created. If you count how often a certain combination appears, it indicates the likelihood of that combination.
See the picture (though it is directly from Wikipedia, please note). The likelihood of BB is 25%, of Bb is 50%, and of bb 25%.

6 0
3 years ago
How small is an atom
worty [1.4K]
Really really really small
4 0
3 years ago
The major organ system that eliminates waste products is the
Eduardwww [97]

Answer:

excretory system

Explanation:

The excretory system is the system of an organism's body that performs the function of excretion, the bodily process of discharging wastes. ... There are several parts of the body that are involved in this process, such as sweat glands, the liver, the lungs and the kidney system. Every human has two kidneys.

4 0
3 years ago
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