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Alexus [3.1K]
3 years ago
6

During earth's early history, ​

Biology
1 answer:
Juli2301 [7.4K]3 years ago
3 0

option 2 seems appropriate for me!

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Use this portion of a dichotomous key for tree identification to answer the question.
LenKa [72]
<span>D) They are nonlobed, simple leaves and are attached oppositely on the branch.</span>
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3 years ago
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If chromosomes fail to separate during cell division ________________ can occur. This can result in cells with the incorrect num
storchak [24]

Answer:

1. NONDISJUNCTION

2.Aneuploidy

3.Trisomy

4.Monosomy.

5.3.

6.Trisomy 21.

Explanation:

8 0
3 years ago
which of the following statements regarding enzymes is true? (3 points) enzymes increase the rate of a reaction by making the re
ziro4ka [17]

Which is true about enzymes is: enzymes increase the rate of reactions by lowering the activation energy barrier.

Enzymes are chemical compounds in the form of proteins that act as biocatalysts which function to speed up reactions.

Enzymes work specifically, that is, they can only work on certain substrates by adjusting the shape of the substrate. Enzymes sensor with molecules for substrates to produce compounds through organic chemical reactions that require energy. Some of the reactions assisted by enzymes such as the breaking of large molecules into small ones or the binding of molecules into new molecules. Enzymes can do that because of the influence of the activation energy that every chemical reaction has.

Activation energy is the energy required to break down the reactants. The role of enzymes is to lower the activation energy limit needed to start reactions.

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8 0
1 year ago
Describe the instance of conservation of matter and energy demonstration
natita [175]

Iced tea's energy increases while the energy of the glass decreases.

<h3>What is energy?</h3>

Energy is the capacity for doing work. It may exist in potential, kinetic, thermal, electrical, chemical, nuclear, or other forms

Iced tea's energy increases while the energy of the glass decreases because the ice is getting warmer so the glass is also getting warmer. meaning that the glass is decreasing in energy while the ice tea is increasing in energy.

Hence, iced tea's energy increases while the energy of the glass decreases.

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8 0
2 years ago
if a mutation occurs in the somatic tissue, approximately how many of the gametes will carry the mutation?
Mrac [35]

None: Only those mutations that occur in the germ line and result in gametes will have a chance of being passed on to progeny. An alteration in DNA that occurs after conception.

Somatic mutations can occur in any of the body's cells except germ cells (sperm and egg) and are therefore not passed on to children. These alterations can (but not always) cause cancer or other diseases. Mutations in somatic cells are called somatic mutations. Because they do not occur in the cells that give rise to gametes, the mutation is not transmitted to the next generation sexually. Human somatic cells have 46 chromosomes: 22 pairs and 2 sex chromosomes that may or may not form a pair. This is the 2n or diploid condition. Human gametes have 23 chromosomes, each of 23 unique chromosomes, one of which is a sex chromosome. Somatic cells are the cells in the body other than sperm and eggs (called germ cells). In humans, somatic cells are diploid, meaning they contain two sets of chromosomes, one inherited from each parent. Mutations in a somatic cell occur in somatic cells and are transmitted by mitosis, resulting in cancer. However, mutations in a gamete are passed on by meiosis, resulting in mutated offspring. A genetic mutation occurs during DNA replication, and chromosomal mutations occur during meiosis.

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3 0
1 year ago
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