BIOLOGY MIDDLE SCHOOL

Which of the following describes a chemical property of a metal?A. reacts with acid
B. conducts electricity
C. attracted to a magnet
D. high melting point

Answers

Answer 1
Answer:

Answer: The correct answer option (A).

Explanation:

Chemical properties are the properties which are observed in a chemical reaction like change in arrangement in atoms or change in identity of the substance.

Metals reacts with acid to form salts and hydrogen gas. In which chemical composition of pure metal changes during the chemical reaction. So, yes it is a chemical property of metals.

Whereas conducting electricity,  property to get attracted by magnet and high melting point doesn't changes the arrangement of an atoms which means they are not chemical properties of metals but are physical properties of metal.

Hence, the correct answer option (A).
Answer 2
Answer:

answer is react to acid

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What is the difference between Chromatin. Chromatids. and Chromosomes?

What determines the similarities in anatomical features among organisms?A ) location on Earth

B) environmental conditions

C) predator-prey relationships

D) chromosomes and genes

Answers

Answer: D) chromosomes and genes

Chromosomes are long thread like structures which are found inside the nucleus of the living organisms. These chromosomes consists of small segment units called as genes. The genes control the genetic information which when expresses result in the production of specialized functional proteins. The gene is a hereditary material which is passed from the parents to the offsprings after reproduction. The expression of genes in the new organisms results in the expression of characters which were found to be similar in both parents and offsprings but some changes occur due genetic variation. Therefore, organisms exhibit anatomical similarities in features due to chromosomes and genes.  

Chromosomes and genes determines the similarities in anatomical features among organisms. The correct option is D.

Thus, Chromosomes, which resemble lengthy threads, are found inside the nucleus of living things. The little segment units that make up these chromosomes are known as genes.

The genes regulate the genetic material, which, when expressed, leads to the creation of certain, useful proteins. The gene is a genetic component that, during reproduction, is transferred from parents to children.

Characters that were determined to be comparable in both parents and children are expressed by genes in new creatures, however some modifications take place owing to genetic diversity. The correct option is D.

Learn more about Genetic diversity, refer to the link:
brainly.com/question/29766851

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List the atoms that would be found in a molecule of CO2

Answers

Answer:

Explanation:

A molecule of the compound carbon dioxide contains one atom of the element carbon and two atoms of the element oxygen. Each oxygen atom shares a double bond with the carbon atom.

Is an energy resource harnessed from flowing water

Answers

no it is not because well yes water could produce energy in a very scientific way but the answer is no 
Hydroelectric power installation harness the energy contained in flowing water to produce electricity. 

What materials are part of the the three most important cycle in the ecosystem

Answers

Three of the most important cycles in the ecosystem involve water, carbon, and nitrogen. Water is just made up of two elements: oxygen and hydrogen.

Which statement best represents how structure relates to function?A horse's mane is often black.

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Many tropical birds can be taught to speak.

Great white sharks have sharp serrated teeth for tearing into their prey.

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Answers

Answer:

The correct answer is 'D'. Great white sharks have sharp serrated teeth for tearing into their prey.

Explanation:

Living organisms inhabit different habitats. They possess unique structures which help them perform specific functions. They maybe adapted or they are born with it. Sharks are carnivorous animals who feed on other animals. They have sharp pointy teeth which helps them to tear the flesh of their prey. Some other examples of animals are:

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  • Polar bears have thick fur which helps them to keep warm in winters.

Is Euglena a prokaryotic or eukaryotic organism? explain

Answers

The answer is "Euglena is an eukaryotic organism".

The main difference between prokaryotic cells and eukaryotic cells is presence of true nucleus and membraned organelles.Eukaryotic cells have true nucleus and membrane bound organelles such as chloroplasts, mitochondria, but prokaryotic cells have cyclic DNA instead of true nucleus and lack of membraned organelles.Euglena has a true nucleus and membrane bound organellessuch as chloroplast. Hence, Euglena is classified as eukaryotic organism.
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