helppppppppppppppppppp

Explanation:

1.arm&base

2.a shutter controlled by a lever

3.Nosepiece,objective lenses,stage clips

6. 100X.....(this means that the image being viewed will appear to be 100 times its actual size

Answer:

d. calculated = 3.10; critical = 7.815.

Explanation:

To test the hypothesis Given in the question above, we use the Chisquare goodness of fit :

The test statistic is defined as :

χ² = Σ(Observed - Expected)² / Expected

Observed = number of nests

χ² = ((15 - 19.9)^2 / 19.9) + ((29 - 25)^2 / 25) + ((19 - 15.7)^2 / 15.7) + ((7 - 9.3)^2 / 9.3)

χ² = 3.1089

The critical value :

df = n - 1 = 4 - 1 = 3

The critical value ;P(χ² at 0.05, df = 3 ) = 7.815

Answer:

Glycerol and fatty acids are the basic building blocks of fats (lipids).

Explanation:

Answer:

D

Explanation:

Have a nice day

Eukaryotes are different from prokaryotes because only eukaryotes have Organelles. The correct option is C.

Prokaryotes are primitive organism that is single-celled and their cell contains a capsule and flagella or cilia for locomotion and finding food. These organisms lack true organelles.

Eukaryotes are organisms that can be single-celled or multi-celled. They contain the true nucleus and organelle in the cell and the cell is covered with a cell membrane and a nucleus is present that contains the DNA or the organism.

Prokaryotic and eukaryotic cells, both contain DNA, a plasma membrane. But in prokaryotes, an organelle is absent, and they are covered by a capsule.

Thus, the correct option is C. Organelles.

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Answer:

There are seven main classes of nutrients that the body needs. These are carbohydrates, proteins, fats, vitamins, minerals, fibre and water. It is important that everyone consumes these seven nutrients on a daily basis to help them build their bodies and maintain their health.

these are the 7 main classes of Nutrition that the body needs hope it will help you

Answer:

i thinks

Explanation:

400x

0.4mm

lens

Answer:

The middle ear is a narrow air-filled cavity in the temporal bone. It is spanned by a chain of three tiny bones—the malleus (hammer), incus (anvil), and stapes (stirrup), collectively called the auditory ossicles.

Explanation:

Hope this helps!;)

Answer:

I think it's A

must lie btn a clearly defined interval

Continues variable must be between a clearly defined the interval about continuous variables. Thus,option A is correct.

A continuous variables is define as a function which continuous varies in a given interval for instance, if a variable over a non-empty range of the real numbers is continuous, then it can take on any value in that range.

Types of continuous variables:

There are two types of continuous variables which are mentioned below:-

1:- Instant variable

2:- Ratio variable

Instant variable

A variable can be defined as the distance or level which are varies between given interval.

Ratio variable

Ratio variable is another type of continuous variables which has only one variation in given interval.

Therefore, continues variable must be between a clearly defined the interval about continuous variables. Thus, option A is correct.

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Answer:

b.) Sensor - Integrator - Effector

Explanation:

During homeostasis, our body sense change that occur in the external environment through sensors. These sensors sends the information to integrator or the control center where the information is analyzed. After analysis, the instructions are send to the effectors to take action against the change which is occur in the external environment of our body so the correct order of homeostasis is Sensor - Integrator - Effector.

Answer:

Filtration is technically defined as the process of separating suspended solid matter from a liquid, by causing the latter to pass through the pores of a membrane, called a filter. The most common example is making of tea. While preparing tea, a filter or a sieve is used to separate tea leaves from the water.

Answer:

i didn't understand what you told

Answer:

The answer is B an Organ system

Answer:

an organ system

Explanation:

The correct answer is organ system. A tissue is a group of cells working together to achieve a common function. An embryo is a fertilized egg that has developed from a zygote. Multipotent merely refers to a type of stem cell that has limited specialization capabilities relative to the capabilities of totipotent and pluripotent cells.

The nucleus of the cell is similar to the Neurological system of the body.

According to the Cell Biology, nucleus may be a membrane found in organism cells.

The nucleus contain all of the cell's ordering except mitochondrial DNA and in plant cell, Plastid DNA.

Nuclear DNA is organized as multiple long linear molecules in a very complex form with a large variety of proteins, like histones, to make chromosomes.

The nucleus maintains the integrity of sequences and controls the activities of the cell by regulation gene expression—the nucleus is, therefore, the control center of the cell

The nucleus contains nearly all of the cell's polymer, enclosed by a network of fibrous intermediate filaments and enveloped in an exceedingly double membrane referred to as the "nuclear envelope".

The nuclear envelope separates the fluid within the nucleus, referred to as the living substance, from the remainder of the cell. The scale of the nucleus depends on the scale of the cell it's contained in, with a nucleus usually occupying 8% of the whole cell volume.

The nucleus is the largest organelle in animal cells.

For example- In mammalian cells, the average diameter of the nucleus is approximately 6 micrometers (µm).

The  Nervous system could be a extremely advanced a part of associate degree animal that coordinates its actions and sensory data by sending signals to and from completely different components of its body.

In vertebrates it consists of 2 main components, the central system (CNS) and therefore the peripheral system (PNS). The CNS consists of the brain and neural structure.

The function of the system is to send signals from one cell to others, or from one a part of the body to others and to manage the body.

It will this by extracting data from the setting exploitation sensory receptors, causing signals that encrypt this data into the central system, process the data to work out associate degree applicable response, and causing output signals to muscles or glands to activate the response.

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Answer:

The three areas of the tundra biome are artic, antarctic and alpine.

Answer:

The nuclear receptor superfamily comprises a large group of transcription factors that play a key regulatory role in development and homeostasis of multicellular organisms. A special feature of nuclear receptors is their ability to bind to condensed chromatin templates, which makes them important initiators of gene transcription. Moreover, the ability of nuclear receptors to sequentially recruit a variety of transcription factors and coregulators to target promoters and to orchestrate the whole process of gene transcription confirms their biological significance and stimulates intensive research and a high level of scientific interest in this field. In this review, we summarise current knowledge regarding the structure and function of nuclear receptors as principal regulators of gene expression. Emphasis is given to the molecular mechanisms of nuclear receptor-mediated transcriptional activation and repression including recent progress made in this area.

Gross Primary Production or GPP minus the carbon that is lost to respiration

Explanation:

NP = GPP - RESPIRATORY LOSS

Answer:

B is correct

Explanation:

Answer:

Poisonous substance.

Explanation:

This mechanisms of action indicates that the toxins are the poisonous substance which attacks on the respiratory system of the body that leads to the respiratory failure. Acetylcholine is the main neurotransmitter of the parasympathetic nervous system which is the part of the autonomic nervous system that contracts smooth muscles so inhibition of the release of Acetylcholine is the main cause of paralysis.

Answer:

The first option would be the best.

Explanation:

The oceans heat up first before the atmosphere does.

Answer:

⬇ See below ⬇

Explanation:

Sinking is where an object/human/animal goes under a type of surface, normally water. Floating, on the other hand, is where an object is at the surface of a liquid, normally water. (Hope this helps!)

The Cell-mediated response results in the production of macrophages to use phagocytosis on pathogens. The correct option is C.

Cell mediated immune response occurs when an invading antigen causes the release of cytokines (Interleukins), differentiation of T cells and production of macrophages.

Macrophages are produced through the differenciation of monocytes. They are further activated during an infection through the macrophage-activating cytokine (Interleukins).

Phagocytosis is the process used by immune cells such as macrophages  which involves ingesting and eliminating pathogenic microorganisms.

Cell-mediated response dosent result to differenciation of helper T cells into cytotoxic T cells rather it leads to the activation of cytotoxic T cells. Therefore B is wrong.

Cell-mediated response dosen't lead to the production of antibodies therefore option D is wrong.

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Answer

Answer:

sewage sludge

Explanation:

The solid material waste from waste water is called sewage

sludge

Explanation:

Sewage sludge is the solid, semisolid, or slurry residual material that is produced as a by-product of wastewater treatment processes. 

Answer:

Fabric name

Lycra

Fabric also known as

Spandex, elastane

Fabric composition

Polyether-polyurea copolymer

Fabric breathabilityn

High breathability

Moisture-wicking abilities

High

Heat retention abilities

Low

Stretchability (give)

Extraordinarily high

Prone to pilling/bubbling

High

Country where fabric was first produced

United States

Biggest exporting/producing country today

China

Recommended washing temperatures

Warm or cold

Commonly used in

Underwear, socks, bras, sports bras, bike shorts, yoga pants, hiking apparel, motion capture suits

#hope this helps u some #

Answer:

Nucleotides.

Explanation:

Nucleic acids (DNA, RNA) are large polymers, made out of monomer building blocks called nucleotides. The nucleotides have a similar structure with three 'subunits': A phosphate group

Explanation:

Animals have special features that help them to live in a particular place. Therefore this features is called adaptation.

1] Aquatic plants have leaves that float on the surface of water.

2] Thier leaves are rarely have stomata.

3] Thier leaves can perform all the work without xylem.

4] They are usually lack cuticle layer in order to avoid excessive dryness.

Answer:

The most common adaptation is the presence of lightweight internal packing cells, aerenchyma, but floating leaves and finely dissected leaves are also common. Aquatic plants can only grow in water or in soil that is frequently saturated with water.

Four characters of aquatic plants are as given below:

1) most aquatic plants donot need culticles or have thin culticles as cuticles prevent loss of water.

2) aquatic plants keep their stomata always open for they do not need to retain water.

3) on each side of their leaves are a number of stomata.

4) aquatic plants have less rigid structure since water pressure supports them.

Explanation:

I hope this answer help you.

Answer: Adenine hope this helps...