BIOLOGY HIGH SCHOOL

What are the three types of fingerprints found in the human population? How often does each occur? Please help!

Answers

Answer 1
Answer:

What is Fingerprint ?

  • The mark made by the skin of a finger, used for identifying people
  • A fingerprint is an impression left by the friction ridges of a human finger. The recovery of partial fingerprints from a crime scene is an important method of forensic science. Moisture and grease on a finger result in fingerprints on surfaces such as glass or metal.
  • It is mainly study in forensics science as branch of fingerprint science

What are the types?

  • Fingerprint mainly divided into 3 categories

1. ARCH

2. LOOP

3. WHORL

How often does each occur?

  • It occurs due to finger ridges found on the outer layer of skin.
  • Various oils and different types of liquid or sweat produced by the sebaceous layer of skin.

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Answer 2
Answer: The three fingerprint classes are arches, loops, and whorls. Arches occur about 5% of the time, loops occur about 60-65% of the time, Whorls occur about 30-35% of the time.

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How have approaches to environmental issues changed over the years

Answers

Environmental issues have been around for years and has worsen as years passed. Many efforts on research are directed into stopping and controlling these issues and, as years passed, technology have been innovated and are used for the benefit of the environment. Approach on addressing these environmental issues are more stronger and now more on doing it rather than just saying words. People are now more concerned on the environment thus more people are now cooperating to these efforts made by people in authority.

Answer:

Over the years, greater controversy has arisen over environmental issues as the issues addressed have become more complex and less easily identifiable.

Explanation:

Living cells use as their main source of energy

Answers

The answer to this question is Carbohrydrates

Final answer:

Living cells use chemical energy primarily found in carbohydrate molecules as their main source of energy, much of which is produced by photosynthesis. They release this stored energy through catabolism when they consume food and break down these molecules, fuelling necessary cell functions. This energy flow, described by bioenergetics, is essential to the cell's metabolism.

Explanation:

All living organisms use a source of energy for their metabolic activities. Living cells primarily use chemical energy found in carbohydrate molecules (food), the majority of which are produced through a process called photosynthesis. Through photosynthesis, organisms convert solar energy into chemical energy which is then used to create carbohydrate molecules.

Much of this stored energy is released when an organism consumes food and breaks down carbohydrate molecules, a process called catabolism. This energy provides the cells with the fuel they need to perform their necessary functions. For instance, cells import, metabolize, synthesize, and transport nutrients and other molecules needed for the cell's survival rates. This energy management is crucial for things like muscle growth, the breakdown of complex carbohydrates into simpler sugars for energy, and the transportation of signaling molecules like hormones and neurotransmitters.

Scientists often use the term bioenergetics to describe the flow of energy through living systems like cells. The building and breaking down of complex molecules occur through stepwise chemical reactions, some of which spontaneously release energy, while others require energy to proceed. All of these reactions, whether they use or release energy, are part of the cell's metabolism.

A key part of this process is glucose, a sugar that is the primary energy source for living cells. The first step in breaking down glucose for energy is a process known as glycolysis, which occurs in both prokaryotic and eukaryotic cells and does not require oxygen, making it anaerobic.

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Organisms are classified as fungi if they

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Organisms are classified as fungi if they have chitin in their cell walls.

Fungi are eukaryotic organisms (such as yeasts and molds) that usually have chitins in their cell walls but no chlorophyll or plastids. Fungi may be unicellular or multicellular. Fungi do not photosynthesize but they are heterotrophs like animals. They get their food by absorbing dissolved substances and they usually reproduce by means of spores.

CRISPR-Cas9 technology is very innovative and made a breakthrough in biomedical science. What aspect of CRISPR-Cas9 making special from traditional PCR-based base changes? Briefly describe.

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Here we go I got this for you:

CRISPR-Cas9 technology is indeed groundbreaking in biomedical science, and its key distinction from traditional PCR-based base changes lies in its precision and versatility.

**Precision:** CRISPR-Cas9 allows for highly specific and targeted modifications to an organism's DNA. It can precisely edit or replace individual DNA sequences with a high degree of accuracy. In contrast, traditional PCR-based methods are less precise and can introduce unintended mutations.

**Versatility:** CRISPR-Cas9 can be used not only to introduce base changes but also to perform a wide range of genetic manipulations, including gene knockout, gene activation, and gene insertion. It offers a versatile toolkit for genetic engineering and gene therapy applications. Traditional PCR-based methods are primarily focused on amplifying and sequencing DNA, lacking the versatility for such precise genome editing.

In summary, CRISPR-Cas9's precision and versatility make it a revolutionary tool for genetic editing, going beyond the capabilities of traditional PCR-based methods.

Using the explicit formula, calculate how far the students will be swimming on week 10 using Ernest's schedule.

Answers

Ernest would be swimming at 3.25 units on week 10

The explicit formula is given as:

a_n = a_1 + (n - 1) * d

Also, we have the following parameters

a_1 =1.0 -- the initial distance

d =0.25 --- the difference between concurrent distances

In week 10, the value of n is 10.

Next, substitute 10 for n in the explicit formula a_n = a_1 + (n - 1) * d

So, we have:

a_(10) = 1.0 + (10 - 1) * 0.25

Subtract 1 from 10

a_(10) = 1.0 + 9 * 0.25

Multiply 9 by 0.25

a_(10) = 1.0 + 2.25

Add 1.0 and 2.25

a_(10) = 3.25

Hence, Ernest would be swimming at 3.25 units on week 10

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Compare the efficiency of glycolysis with the efficiency of aerobic respiration

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In cellular respiration, oxygen is combined with products fromglycolysis to release energy for the the re-attachment of a phosphate of ATP from ADP and P. Glycolysis provides only enough energy to reattach 2 molecules of ATP where aerobiccellular respiration provides enough energy to reattach 36 molecules.
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