BIOLOGY HIGH SCHOOL

The law of conservation of momentum states that the total momentum of a system _____.-increases
-decreases
-remains constant

Answers

Answer 1
Answer: The law of conservation of momentum states that the total momentum of a group of objects does not change unless outside forces act on the objects.
Answer 2
Answer:

The correct answer is remains constant.

The law of conservation of momentum can be stated as in an isolated system  when any collision between two bodies takes place then the the total momentum remains constant. This law has been derived from the Newton's law of motion. The collision of body transfers its energy from body A to another body B.

Hence, in this way the total momentum remains constant.

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This cell membrane gateway system is specifically called the
For questions 1-5 decide whether the example is a producer, consumer or decomposer. A rabbit is an example of a _________. Question 1 options: A.Producer B.Consumer C.Decomposer
Drinking too much water during exercise can cause a condition in which the concentration of sodium in the blood is lower than normal. What response do you expect to happen as the body tries to restore homeostasis?
In this activity, you will identify the conclusions that can be drawn from Pasteur's experiments using S-shaped neck flasks. Which of the following conclusions can be drawn from Pasteur's experiment involving the flasks with S-shaped necks? Select all statements that apply. a. Pasteur's observations support the theory of spontaneous generation. b. Microbes can be blocked from accessing favorable growth environments. c. Beef broth is an unsuitable environment for growing microorganisms. d. Microbial life can be destroyed by heat. e. Microorganisms can be present in nonliving matter, such as air, liquids, and solids. f. Microbial life can arise from nonliving matter. g. Pasteur's observations support the theory of biogenesis.
Use the term "concentration" in a sentence about liquids that conveys its meaning. (9 points)

How does the structure of the membrane relate to its selective permeability? (think about the chemical properties of the inner core of the bi-layer.)

Answers

The cell membrane is also called selectively permeable membrane for its composition, it is composed of amphipathic lipid, protein and small amount of cholesterol which form a bilayer structure allow only specific substance.

What is cell membrane?

The cell membrane is a thin selectively semi-permeable membrane and act as an outer covering surrounding cell cytoplasm, Proteins and lipids are the major components.

The major  lipids are phospholipid, which form a semi-permeable lipid bilayer which have both hydrophilic or water loving head group and hydrophobic or water hating tail group and form bilayer structure.

Hence both group can interact with polar and non polar molecule individually called as amphipathic in nature, Some organelles like nucleus  and mitochondria also have its own cell membrane.

The proteins are peripheral, extrinsic and intrinsic type and the function of cell membrane is to protect the cell and maintain the structural integrity of the internal environment of the cell.

Learn more about cell membrane, here:

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.

The cell membrane is also called selectively permeable membrane for the sole reason being it is selective in nature.

It forms a physical barrier and as a barrier between the cell and the external environment as it allows only selected necessary molecules to pass through it and at the same time prevents entry of unwanted / unnecessary substances.

It also regulates the entry and exit of molecules into and out of the cell.

The cell membrane permits the entry of vital molecules like

water, oxygen, amino acids and glucose into the cell as they are crucial for various life processes and at the same time metabolic waste products are expelled through the cell membrane.

Copies of chromosomes are called____1) platelets.

2)sister chromatids.

3)stem cells.

4) macrophages.

Answers

Answer:

option 2

Explanation:

because there divide

7. Which of the following elements is LEAST likely to be found in sugar moleculesA. carbon
B. hydrogen
C. oxygen
D. sulfur

Answers

The elements found in sugar molecules are carbon, oxygen and hydrogen.

What are sugar molecules?

Sugar molecules are molecules that contain carbon, oxygen and hydrogen

They are the main sources of glucose and they release glucose to the body which provide enetbt to the body.

Therefore, The elements found in sugarmolecules are carbon, oxygen and hydrogen.

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Answer:

sulfer

Explanation:

Bryophytes are known as nonvascular plants. what makes them nonvascular?

Answers

The answer is that bryophytes do not have a xylem and a phloem. Bryophytes do not have the vascular transport system that is found in angiosperms and gymnosperms. They get food and distribute nutrients by diffusion from cell to cell.

Why do many people feel that wilderness areas are beneficial to their emotional health?

Answers

Many people feel that wilderness areas are beneficial to their emotional health because it gives them a break from their hectic life. The time spent in wilderness is bound to reduce the tension level of the person and so it will positively effect the health of the person. Also the pollution level in the wilderness areas will be low.

get away from hectic lives

What cbrne agent are microorganisms and/or biologically derived compounds or molecules that cause disease in personnel, plants, or animals?

Answers

the microorganisms and/or biologically derived compounds or molecules that cause disease in personnel, plants, or animals are called : Pathogen
The term is first time introduced n 1880. Pathogen usually invade a host and caused irregularity within its cells

hope this helps
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