Energy is always required to force molecules to move from areas of high concentration to areas of low concentration?true or false

Answers

Answer 1
Answer: This statement is false. Energy is definitely not 'always' required to force molecules to move from areas of high concentration to areas of low concentration. Energy is a property of objects in which produced and converted, that can be very useful to everyone's life.

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1. The leaves of Mimosa plant closes up when touched this shows which characteristic of living thing?(a) grow (b) breath(c) respond (d) reproduce2. Which of the following is not an adaptive feature of polar bear?(a) It has thick layer of fur on its body(b) It has strong & sharp claws (c) It has a keen sense of smell(d) It has gills to respire under water3. Leaves are modified into spines in_____________.(a) Rose (c) Cactus(b) Bougainvillea (d) Succulents4. Which of these are biotic components of the environment?(a) Plants & Animals (c) Soil & Minerals(b) Air & Water (d) Sunlight & Temperature5. Which of the following is found in mountain regions?(a) Yak (c) both a & b(b) Snow leopard (d) None of these6. Dolphins breathe through_______________.(a) Gills (c) Moist skin(b) Blowholes (d) lungs7. Which habitat plants have hollow & light stems?(a) Desert (c) Aquatic(b) Grasslands (d) Mountain8. Which of the following is not an adaptation in frog?(a) Webbed feet (b) Strong back legs(b) Lungs (d) Gills9. Which of the following animal breathe through skin?(a) Earthworm (c) Grasshopper(b) Cockroach (d) Fish10. Animals that can live in water & land both?(a) Aquatic (c) Arboreal(b) Terrestrial (d) Amphibians11. Cone-shaped trees are found in_______________.(a) Mountains (c) Desert(b) Grasslands (d) both b & c​

Scientists were motoring a meteor headed toward earth. It moved off course , but some pieces of rock entered the earths atmosphere . Which atmospheric layer protected the earth against the danger of the rocks ? A.the troposphere B.the stratosphere C.the mesosphere D.the thermosphere

Answers

The correct option is C.

The atmosphere is made up of five different layers, which are: exosphere, thermosphere, mesosphere, stratosphere and troposhere. The farthest layer is the exosphere while the nearest one to the earth surface is the troposphere. Each of these layers have their specific functions. The mesosphere is the one that is responsible for protecting the earth surface from meteors and asteroids. The mesosphere functions by burning up the greater parts of these substances before they enter the earth surface.

The answer is C. The atmospheric layer that protects the Earth against danger of the rocks is the mesosphere. This layer is above the stratosphere. Meteors are rocks from the space that enter the atmosphere. Meteors burn as they go through the mesosphere layer. However, not all are completely burned some survives and still enter the Earth's surface. These are then called meteorites.

What is mendel's law of independent assortment?

Answers

The principal originated by Gregor Mendel, stating that when two or more characteristics are inherited, individual hereditary factors assort independently during gamete production, giving different traits an equal opportunity of occurring together.

Hope this helps!

What is the sugar-phosphate supporting structure of the dna double helix called?

Answers

It is called the backbone.

This is important for the structure and growth of DNA. Without it DNA would be a lot more flimsy and weak. This is made up of sugar and phosphates!

I hope this helped. Have a great night!

Which will most likely result in a negative growth rate in the human population of a country

Answers

Answer:

The death rate is higher than the birth rate. The birth rate is higher than the death rate.

Explanation:

Which gland of the endocrine and nervous system controls the other glands in the body?

Answers

The pituitary gland is more commonly known as the master gland because it regulates other glands in the body, such as the adrenal glands, ovaries and thyroid. The hypothalamus is what throws signals to the pituitary gland on when to inhibit and stimulate production of hormones.

The hypophysis is more commonly referred to as the master gland because it regulates other glands within the body, such as the adrenal glands, ovaries, and thyroid. The hypothalamus is what throws signals to the hypophysis on when to inhibit and stimulate the assembly of hormones.

Further explanation

Pituitary or Pituitary Gland weighs about 0.5 grams, and its normal dimensions in humans are about 10 x 13 x 6 mm. This gland is in the sphenoid bone cavity - sella turcica -. During embryogenesis, the pituitary develops partly from oral ectoderm and partly from nerve tissue. The neural component arises as an evagination from the base of the diencephalon and grows toward the caudal as a trunk without breaking away from the brain.

The pituitary gland, or pituitary, is a gland that produces certain hormones that act as a controller for various aspects of the human body. Hormones produced by the pituitary help regulate growth, blood pressure, energy production and burning, and various other bodily functions.

Before the pituitary gland produces hormones, the brain will send signals from the hypothalamus as the center of communication between glands. After that, the gland will start producing which then acts as a signal for other glands and organs to regulate their function.

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The hypophysis brainly.com/question/812599

Pituitary Gland brainly.com/question/812599

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Class: High School  

Subject: Biology

Keywords: gland, hypophysis, pituitary

Give the function of all of the following parts of a typical flower. a. Petalsb. Stamen c. Pistil
d. Ovule
Please help.

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Answer:

The petals of a flower are usually brightly colored to attract pollinators such as bees, butterflies and hummingbirds. The stamen is the small body that holds and produces pollen. The pistil is the ovary of the flower. Ovules are the egg cells of a flower, which eventually become seeds.