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Veseljchak [2.6K]
3 years ago
13

1. What is the smallest unit of matter?

Biology
1 answer:
Oduvanchick [21]3 years ago
7 0

Answer:

The smallest unit of matter is an atom.

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Chiasma form during meiosis I but not during mitosis. <br> a. True <br> b. False
Goryan [66]

Answer:

True

Explanation:

Chiasma is the site of crossing over. It is an X-shaped site that appears in a tetrad (bivalent) chromosome during the diplotene stage of prophase I of meiosis I. Crossing over refers to the exchange of segments of chromatids and occurs between homologous chromosomes only. Crossing over is the event of prophase I of meiosis I and produce new gene combinations.

The homologous chromosomes are separated from each other but remain attached at chiasmata. The dissolution of chiasmata occurs by the end of prophase I and separates the homologous chromosomes completely from each other. Crossing over does not occur in mitosis. Since mitosis does not include crossing over, chiasmata are also not formed in mitosis.

4 0
3 years ago
Chelsea is a toddler who has authoritarian parents. her parents do not allow her to make any decisions on her own. as a result,
Kaylis [27]
Autonomy vs shame and doubt

The autonomy vs shame and doubt age is a phase during the development of children. It occurs between the ages of 18 months and three years old. During this stage, the children start to become more independent and start making some of their own decisions. These decisions include what to wear, what to eat and what to play with. Having overbearing parents hinders the development of this stage of development.
3 0
3 years ago
Which method do you think best represents energy flow through ecosystems? Why?
pentagon [3]

Answer:

The circle of life, in which energy flows into the world from the sun, giving plants that energy to live.  All of the organisms in an ecosystem are chemical machines driven by the energy captured in photosynthesis. The organisms that first capture energy, the producers, include plants, some kinds of bacteria, and algae. All other organisms in an ecosystem are consumers.

The plants energy will then be transferred to a small animal, most likely a rabbit or maybe a mouse; depending on the plant. The small animal will then be eaten by a bigger more dominating animal like an eagle or a snake. It just goes on and on. The eagle or the snake will get eaten by a bigger animal or will decompose into the earth giving the soil and plants around it that same energy.

BOOM UR WELCOME SWEETIE :)

8 0
3 years ago
What does random mean and how does it apply to genetics?
Darya [45]
The simplest answer would be to look at a punnet square. it gives you the random chance that a trait gets passed on to offspring. it's made off probability of dominant and recessive genes. But it's random in the end.
8 0
3 years ago
Read 2 more answers
GIVING 20 POINTS!!! PLEASE HELP!!! WILL MAKE BRAINLIEST!!!!
9966 [12]

Answer:

The correct answer is D sister chromatids;centromere

Explanation:

After DNA replication during s phase or synthesis phase of interphase of the cell cycle,each chromosome has a copy and the cell that is newly formed is now 4n.

      We cal these identical pairs sister chromatids and they are held together by a centromere

4 0
3 years ago
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