BIOLOGY HIGH SCHOOL

All matter is composed of tiny particles called

Answers

Answer 1
Answer: Are composed tiny particles called Atoms. Which are composed of neutrons, protons and electrons. 
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which of the following mutations would be most likely to improve the chances that an organism would survive and reproduce? F. a stronger scent that makes an animal easier to find G.a weaker scent that makes a flower less attractive to bees H.weaker eyesight that makes an animal less likely to find prey I.stronger leg muscles that allow an animal to jump away from danger

Glucose is NOT made from which of the following? carbon dioxide sodium chloride light water

Answers

Photosynthesis makes glucose and it is made up of all of these except water
Glucose is NOT made from Sodium Chloride

One of the three main functions of stems is toA. carry out photosynthesis.
B. carry water and nutrients between roots and leaves.
C. store carbohydrates.
D. store water.

Answers


the answer is b! It helps carry nutrients along the plant itself!

Answer: B

Explanation:

A is describing leaves

B is correct

C and D might be referring to roots or other storage modifications

Many drugs can be applied to the skin without entering the blood. How is this fact explained by the structure of the skin

Answers

The skin is made of epidermis and dermis layer. The blood vessel can be found in the dermis layer, a layer below the epidermis. To reach the blood, the drug has to pass through the epidermis. 
Epidermis is a layer that made of keratinized squamous epithelial cell that located in the outer layer. The epidermis layer is strong and prevents movement of water, which makes them hard to be penetrated by drugs. If the drug doesn't have a good penetration, it will not reach the dermis, thus not reaching the blood vessel. 

Medicines which are applied on skin they penetrate into the skin through hair follicles or epidermis and then into the circulation.

Further explanation

Skin

It can be defined as the largest skin organ with an all-out territory of around 20 square feet. The skin shields us from microorganisms and the components, manages body temperature, and grants the vibes of touch, warmth, and cold.

Layers of skin

It comprises three layers which are following.

Epidermis

It is the first layer of skin and it is a waterproof obstruction that gives skin its tone. Dead cells are shed consistently from the epidermis as new ones have their spot. Every day 500% million skin cells are shed by us. Indeed, the furthest pieces of the epidermis comprise of 25–30 layers of dead cells.

Layers of epidermis

  1. stratum corneum
  2. stratum lucidum
  3. stratum granulosum
  4. stratum spinosum
  5. stratum germinativum

Dermis

It makes sweat and oil, gives sensations and blood to the skin, develops hair. It is connective tissue, and it shields the body from anxiety It gives the skin quality and versatility. On the off chance that the dermis is extended a great deal, for example, during pregnancy, the dermis can be torn, and this appears as supposed stretch imprints.

It comprises two layers

  1. Papillary region
  2. Reticular region

Subcutaneous tissue

It joins dermis to the body, controls body temperature, stores fat. The most profound layer is called subcutaneous tissue, the hypodermis. It isn't actually part of the skin however appends the skin to hidden bone and muscle. Subcutaneous tissue likewise gives skin nerves and blood supply.

Absorption through skin

Drugs penetrate from the external surface of the skin both into the skin. Skin assimilation identifies with the level of introduction to and conceivable impact of a substance which may enter the body through the skin. Human skin comes into contact with numerous operators deliberately and accidentally. Skin assimilation can happen from word related, ecological, or shopper skin introduction to synthetic concoctions, beautifying agents, or pharmaceutical items.

Answer details

Subject: Biology

Level: High school

Key words

  • Skin
  • Layers of skin
  • Epidermis
  • Layers of epidermis
  • Dermis
  • Subcutaneous tissue
  • Absorption through skin

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Starch is a monosaccharide. true faulse

Answers

false
It is a polysacharide 

Answer:

Starch is a polysaccharide. Faulse

Explanation:

Polysaccharides are sugars that contain more than one basic sugar unit. Monosaccharide, on the other hand, contain only one sugar molecule.

During the development of a chordate embryo, a ________ develops along the back of the embryo.a. notochord
c. dorsal fin
b. gill slit
d. zygote

Answers

The answer is a. notochord.

The notochord develops along the back of the embryo. It derives from the endoderm during the gastrulation. It extends along the anteroposterior axis of the embryo. 

Among the other choices, a zygote could not be the right answer because an embryo eventually develops from the zygote. A dorsal fin is not along the whole back of the embryo, and gill slit is usually on the side of the shark head.

Which of the following shows how energy is transferred from organism to organism?Food webs
Food chains
Food trails
Food squares

Answers

Food webs and food chains.
 A food web describes the flow of energy and nutrients through an ecosystem, while a food chain is a linear path through a food web
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What are the components needed in order for an experiment to be valid? Identify these components in the following experiment: A scientist is testing a new plant food to see if it causes plants to grow faster. The scientist tests two plants with the new plant food, and two plants he grows without plant food.