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Sidana [21]
3 years ago
14

What was one of the ways that people of ancient times classified plants and animals?

Biology
2 answers:
Liula [17]3 years ago
7 0

The right answer is by use.

Before the advent of genetics animals and plants were classified in the most simple and exploitable way, that is to say by use, for example the plants was classified in nutritive plants, phytotherapeutics (it even divided into subclasses) Toxic insect repellent ...

AVprozaik [17]3 years ago
7 0

The correct answer is (a) by use

Earlier the people were not aware about the genetics and classification of plants and animals. So, they used to classify plants and animals by their use. The plants were used for many purposes such as eating, medicine, cosmetics. Either the plants were usable or non usable. Plants like neem, tulsi, ginger, turmeric were used as medicine.  Animals were used for obtained dairy products like milk and butter, for eating, for exacting colors out of them.

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3 years ago
Increasing excitatory signals above threshold levels for neural activation will not affect the intensity of an action potential.
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<u>Answer</u>: an all or none response

According to the all-or-none law, it a certain threshol is crossed by a stimulus' strenght, it will cause a response in the nerve cell or muscle fiber. However, the strenght of the response will always be the same and will not vary with different stimulus strengths. The only requirement is for the threshold to be crossed.

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4 years ago
In which organelle do active and passive transport occur in the cell ?
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3 years ago
You are performing a biochemical purification of enzymes involved in DNA replication. You have purified the replisome. You wish
algol [13]

Confirm that the sample has both helicase and primase activities, but not the ability to synthesize DNA

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            2. Replication factor C (RFC), a DNA-dependent ATP that acts as an activator of DNA polymerase.

           3. Proliferating cell nuclear antigen (PCNA)

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           5. Primase enzyme that synthesizes short RNA fragments called primers.

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           7. DNA ligases enzymes that form phosphodiester bonds at a single-strand break in DNA

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6 0
3 years ago
Mendel crossed plants that produced only round seeds to those that produced only wrinkled seeds. In the next generation, all the
Artist 52 [7]

Answer:

Dominance

Explanation:

Mendel discovered certain principles that governs heredity or inheritance when he conducted experiments. In his experiments, he discovered that an organism receives two copies of a gene called allele, from each parent.

He discovered that one allele of a gene has the ability to mask or suppress the expression of its allele variant in the same gene. He called the allele that masks or is expressed, DOMINANT allele, while the allele that is masked, RECESSIVE allele. Based on this observation, he named his first principle, LAW OF DOMINANCE.

In this case, he crossed a purebreeding round-seeded pea plant and a purebreeding wrinkled-seeded pea plant, he noticed that in the F1 generation, all the offsprings possessed round seeds. This led to the conclusion that the allele for round seeds masks the phenotypic expression of the wrinkled allele in a heterozygous state. Hence, the allele for round seeds is dominant while the allele for Wrinkled seeds is recessive.

4 0
3 years ago
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