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cluponka [151]
3 years ago
12

A "tool" is defined as "an instrument or device that is held by the hands and used to perform a particular task or function." Th

ink about the tools you have used so far today. What is the most primitive tool you have used today and why? What is the most advanced tool you have used and why? *
Biology
1 answer:
Hunter-Best [27]3 years ago
6 0

Answer:

Explanation:

The most primitive tool I used today was the hammer. The hammer is age long in the history of household tools. It is used to hit in nails into walls or woods.

The most advanced tool I have used today is the mobile phone. This is a tool of the 21st century which makes communication easier and faster.

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When a sound is moving toward the observer the observer will hear a higher pitch. This is due to
kirza4 [7]

The answer is The Doppler Effect.  It is named after the Austrian physicist Christian Doppler, who described the phenomenon in 1842.

5 0
3 years ago
Imagine that five hypothetical genes are arranged on a chromosome in the following order: G--H--I--J--K. Which two genes are mos
andrezito [222]

Answer:

G and K

Explanation:

Crossing-over is a genetic phenomenon that occurs in meiosis, specifically, Prophase I. It is when chromosomal segment (genes) are exchanged between non-sister chromatids of homologous chromosomes. Crossing-over occurs only to genes that are UNLINKED i.e. genes located on different chromosomes or far apart on the same chromosome.

This unlinked genes are said to have the highest RECOMBINATION FREQUENCY. Crossing-over allows genes on the same chromosome but far apart from each other, assort independently, which allows alleles to be recombined on the same chromosome. This phenomenon does not occur to genes that are close on the same chromosome as they will be inherited together as a unit.

In this case, G and K are the farthest apart, hence, they will have the highest RECOMBINATION FREQUENCY i.e. the likelihood for homologous crossing-over to take place during meiosis.

4 0
3 years ago
Which molecule has a basic unit that is composed of phosphate, a sugar ring, and one of five different bases
bixtya [17]
C. Nuclei acids ....RNA and DNA
5 0
3 years ago
Read 2 more answers
Which of the following best describes what happens to water vapors immediately after it is released from plants through transpir
kozerog [31]

A) it will undergo evaporation and change to gas.

5 0
3 years ago
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How many cells make up the nucleus
lyudmila [28]

Answer:

3.

Explanation:

there are three things that make up any nucleus:

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Neutrons

Electrons

The amount of each will very by what type of atom it is, but the things that make up a nucleus do not change when in the body.

7 0
3 years ago
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