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Which substances are responsible for accelerating chemical reactions in cells?

gogolik [260]

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Which substances are responsible for accelerating chemical reactions in cells? amino acids enzymes nucleic acids lipids.

8 0

3 years ago

Match the items on the left with the best corresponding statement on the right. 1. contains tightly packaged DNA molecules R.C.

Brrunno [24]

Answer:

1. Chromosomes

2.Carl Correns

3. Mutation

4. Mitosis

5. Gregor Mendel

6. DNA

7.R.C. Punnett

8. Incomplete dominance

9. Meiosis

Explanation:

1. Chromosomes are described as thread-like structures. They are called DNA molecules because they are made up of DNA that are coiled up tightly. They are found in the nucleus of the cell.

2. Carl Correns was a botanist and geneticist who worked with flowers called four o'clocks. With the flowers he discovered different patterns of heredity, or non-mendelian heredity. He conducted this experiment to determine up to what extent do the Mendelian inheritance patterns remain valid.

3. Mutation is a change in in DNA. Since DNA controls how an organism develops ( in terms of appearance, structure, and behavior), a change in DNA would change many of those characteristics. Mutations can be good and bad, but it is essential to evolution and genetic diversity.

4. Mitosis is a type of cell division where the daughter cells get the same number of chromosomes as the parent. In other words, they are the exact copy of the parent cells. This occurs in body cells.

5. Gregor Mendel is known as the father of genetics for his laws of inheritance. His work on pea plants, he established the laws of heredity; Law of segregation; Law of Independent Assortment; and Law of Dominance.

6. DNA is short for Deoxyribonucleic Acid. It is a molecule that carries all the genetic information of an organism. It stores this information in the form of a code using 4 bases; Guanine, Adenine, Cytosine, and Thymine.

7. Reginald Crundall Punnett was a geneticist who linked statistics and mendellian genetics to come up with the Punnett Square. The Punnett Square is used to determine the probability of genotypes of offsprings, given the genotypes of the parents.

8. Incomplete dominance is a non-mendellian inheritance where instead of the dominant trait masking the recessive trait, the traits blend together. You can see this with some plants where when a white flower is crossed with a red flower, it results in pink flowers.

9. Meiosis is a type of cell division that occur in sex cells. The resulting daughter cells only have half the original number of chromosomes as the parent cells. The daughter cells only have half of the parent cells because unlike in mitosis, the cell divides twice.

3 0

3 years ago

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An annual mustard plant survives only one month during which it produces 50 flowers. each flower produces a fruit containing 20

V125BC [204]

Answer:

Replacement rate

Explanation:

In biology, replacement level or replacement rate refers to the amount number of offspring required to be produced to keep the level of population at a stable state without causing it to much decease.

Scientists use the replacement rate of plant and animal specie to assess the rate at which the population is reproducing at a stable level or are at some threshold zone and need to be taken care of.

Here in question, we see that some specific properties of mustard plants are focused that, plant survives only one month during which it produces 50 flowers. each flower produces a fruit containing 20 seeds.

It clearly do not depicts the population size of mustard plant, or niche or fitness, it just describe the replacement rate that how many offspring does mustard plant produce to keep its population at a stable or steady state without being getting into a danger of extinction.

Hope it help!

6 0

3 years ago

Cellular respiration is the process that converts nutrients into ATP (adenosine triphosphate), a storage molecule that provides

Genrish500 [490]

Answer:

Plants perform photosynthesis and cellular respiration.

Explanation:

Cellular respiration is the conversion of glucose into ATP and energy yielding molecules such as NADH and FADH2 along with water and oxygen and carbon dioxide as by-products.
Cellular respiration is a process that occurs both in autotrophs and heterotrophs.
Only the final stage of cellular respiration i.e. oxidative phosphorylation or electron transport chain requires oxygen as the final electron acceptor.
Heterotrophic cells don't take in carbondioxide, they utilize glucose obtained through food.

5 0

3 years ago

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In water, red light is fully absorbed at about 15 m, orange light is fully absorbed at about 30 m, yellow light is fully absorbe

zhuklara [117]

Answer:

The photosynthetic organisms of the water can survive at a depth of 100 meters due to the presence of blue light.

Explanation:

There are two colors which are responsible for the process of photosynthesis. These two colors are red and blue. Red and blue light of solar radiation is absorbed and green light is reflected back by the green pigment called chlorophyll. So in the depth of 100 meters in the water, blue light is present so plants can make their own food during photosynthesis.

3 0

3 years ago