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Assoli18 [71]
3 years ago
6

Which of the following terms means a group of connected or related objects or materials

Biology
1 answer:
viktelen [127]3 years ago
5 0

I Think relativity but idek

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A teacher gave the lab group shown below an “unsafe practice” warning. What is most likely the basis for the teacher’s warning?
katen-ka-za [31]

Answer:

It is "The opening of flask is pointed in an unsafe direction"

Explanation:

The students were there in the lab to perform practical without obeying the safety rules. The most  reasonable basis for teacher's warning here, in this case, is the flask which is pointed in an unsafe  direction. It is not specified whether the flask is containing any chemical or not but even if it is empty, it  might just fall and break and create injury to anyone present in the lab because, the students are also not  wearing proper laboratory wear in accordance to the safety rules which include lab coats, gloves,  eyewear, etc. Also, some Students have not tied their hair and more importantly the flasks carrying  liquids are not labeled. All of these things might end up in a critical situation for which the teacher warned  students about it all.

5 0
3 years ago
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The purpose of photosynthesis is to produce usable chemical energy or glucose from solar energy. If the formula for glucose is C
Nat2105 [25]

Answer: Option C

Explanation: The balanced chemical equation that explains photosynthesis is stated below:

6CO2(g) + 6H20(g) --------> C6H12O6 + 6O2(g) + energy (in from of ATP)

From the equation, 6 atoms of carbon C are contained in 6 moles of atmospheric Carbondioxide CO2, that reacted with 6 moles of water molecules H2O, contained in plant cells to yield 1 mole of glucose C6H12O6 and chemical energy in the form of ATP (adenosine triphosphate)

8 0
3 years ago
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Can you write a short summary about DNA. The main facts and purposes plz and thankyou... WILL UPVOTE
fiasKO [112]
DNA, or deoxyribonucleic acid, is the hereditary material in humans and almost all other organisms. The information in DNA is stored as a code made up of four chemical bases: adenine (A), guanine (G), cytosine (C), and thymine (T). <span>DNA bases pair up with each other, A with T and C with G, to form units called base pairs. Each base is also attached to a sugar molecule and a phosphate molecule. Together, a base, sugar, and phosphate are called a nucleotide. Nucleotides are arranged in two long strands that form a spiral called a double helix. The structure of the double helix is somewhat like a ladder, with the base pairs forming the ladder’s rungs and the sugar and phosphate molecules forming the vertical sidepieces of the ladder.</span>
7 0
3 years ago
Nebula - protostar - main sequence star. The hydrogen gas in the nebula is pulled together by gravity and it begins to spin and
andrezito [222]

Answer:

The mass of a star determines its life cycle, that is, more the mass, shorter will be its life cycle. The mass of the star is determined by the concentration of matter, which is found within its nebula. In the nebula, with time, the hydrogen gas comes in close proximity with each other due to gravity and starts to spin.  

With the brisk spinning, the gas heats up and turns into a protostar. The temperature now reaches 15,000,000 degrees and within the core of the cloud, the phenomenon of nuclear fusion takes place. The cloud now contracts a little, starts to glow brightly, and turns stable. The cloud now becomes a prime sequence star, and will stay in this phase for millions of years, the Sun of our galaxy is in this stage at the moment.  

8 0
3 years ago
En un cruce entre peces naranjas y peces grises se obtiene una generación (f1) de 50% peces grises . Realice el cruce y explique
Ilya [14]

Answer:

Uno de los progenitores es heterocigoto para color naranja (Nn) y el otro parental es homocigoto recesivo para gris (nn). Al haber una cruza entre un homocigoto recesivo y un heterocigoto, la 50% de la progenie expresa color naranja (Nn), mientras que el otro 50% expresa color gris (nn).

Explanation:

<u>Datos disponibles:</u>

  • Cruce entre peces naranjas y peces grises
  • 50% de la F1 son peces grises
  • Naranja dominante sobre gris

Podemos nombrar el alelo dominante para color naranja <em>N</em>, y al alelo recesivo  para color gris <em>n</em>.

Para que en un cruce entre dos fenotipos distintos, el 50% de la primer camada exprese uno de estos fenotipos, entonces uno de los parentales debe ser heterocigoto, mientras que el otro parental debe ser homocigoto recesivo. De esta forma 50% de la primera generación expresara uno de los fenotipos, mientras que el otro 50% expresará el otro fenotipo.

Supongamos que uno de los parentales lleva el genotipo <em>Nn</em>, y el otro parental es <em>nn</em>.

Cruce:

Parental)      Nn    x     nn

Gametas)   N    n       n    n

Fenotipos) Naranja     Gris

Cuadro de Punnett)      N           n

                            n       Nn         nn

                            n       Nn         nn

F1)  2/4 = 1/2 = 50% de la progenie tendrá genotipo heterocigoto, Nn

     2/4 = 1/2 = 50% de la progenie tendrá genotipo homocigota recesivo,    

     nn

     50% de la progenie será color naranja (Nn)

     50% de la progenie será color gris (nn)

               

3 0
3 years ago
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