Can you please help me with this question?

Answer:

bed rock

Explanation:

ok ok ok ok ok ok ok ok ok ok ok

Answer:

Adjustment knob (coarse) ---> Causes stage (or objective lens) to move upward or downward

Arm ---> Serves as a handle for carrying the microscope

Condenser ---> Concentrates light onto the specimen

Eyepiece (ocular) ---> Contains a lens at the top of the body tube

Field of view ---> Circular area seen through the eyepiece

Iris diaphragm ---> Increases or decreases the light intensity

Nosepiece ---> Part to which the objective lenses are attached

Objective lens system ---> After light passes through the specimen, it next enters this lens system

Explanation:

The microscope is an essential equipment used in science laboratories to view objects which are too small to be seen by the naked eye. Also certain processes which occur at the microscopic level can only be observed using a microscope.

There are many different types of microscopes. The compound light microscope is the one most commonly used in biological laboratories to view tissues and cells of organisms. It uses visible light which passes through two separate lens to magnify the image produced of a specimen.

The various parts of compound light microscope and their respective functions are given below:

Adjustment knob (coarse) ---> Causes stage (or objective lens) to move upward or downward

Arm ---> Serves as a handle for carrying the microscope

Condenser ---> Concentrates light onto the specimen

Eyepiece (ocular) ---> Contains a lens at the top of the body tube

Field of view ---> Circular area seen through the eyepiece

Iris diaphragm ---> Increases or decreases the light intensity

Nosepiece ---> Part to which the objective lenses are attached

Objective lens system ---> After light passes through the specimen, it next enters this lens system

Stage ---> Platform that supports a microscope slide

Stage (slide) clip ---> Holds a microscope slide in position

The correct match between microscope parts and names are:

A. adjustment knob (coarse)  - 4.

B. Arm - 8.

C. Condenser - 3.

D. eyepiece (ocular) - 7.

E. Field of view - 10

F. Iris Diaphragm - 1

G. Nosepiece - 9

H. objective lens system - 5

I. Stage - 2

The microscope is an important piece of equipment used in biological science that helps in view objects that can not be seen by the naked eye. It is also used in various branches of science used to see certain processes that occur at the microscopic level.

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Answer:

Answer:d

Explanation:

it’s right

Answer:

1. nucleic acids - these are the molecules also known as genetic material and code for the hereditary characteristics by regulating the production of the proteins.

2. Lipids - Lipids are the hydrocarbon and the major constituents of the cell membrane and molecules like hormones and give energy as well.

3. steroids - Steroids are lipids that have a fused ring structure and do not resembles other lipids however, have the same hydrophobic nature.

4. peptide - when two amino acids react with one another in an acid-base reaction there is a peptide bond form and the new molecule is called peptide and chains of such molecules known as polypeptides.

5. Deoxyribonucleic acid or DNA - It has genetic information code in it as specific sequences, it is used to develop and functions of various living organisms.

6. Ribonucleic acid or RNA - RNA is the molecule that play important role in protein synthesis as it (mRNA) carries the genetic code needed for the creation of proteins to the ribosomes from the nucleus.

7. Monosaccharides - Monosaccharides are the simplest form of Carbohydrates and known as a basic subunit of carbohydrates as these are linked to form complex carbohydrate molecules.

8. Starch - Starch is a carbohydrate found mainly in plants as the storage form of carbohydrates and provides nutrition to various organisms including humans.

9. Isomers - are the ompounds that have the same molecular formula but different chemical structures are called isomers.

10. Carbohydrates - it is the organic molecule and major source of nutrition that is produced by green plants from carbon  dioxide and water through the process of photosynthesis.

Answer:

either a or b

Explanation:

definitely not c or d.

Answer:

C: 35

Explanation:

if DNA molecule contains 15% adenine then C and G will constitute 70%,of which guanine will be 35%

Answer:

earth is the only planet we know of that sustain life please mark me brain list

Answer:

A vertebrate is an animal with a spinal cord surrounded by cartilage or bone. The word comes from vertebrae, the bones that make up the spine. Animals that are not vertebrates are called invertebrates. Vertebrates are adapted to life underground, on the surface, and in the air. They feed upon plants, invertebrate animals, and one another. Vertebrate faunas are important to humans for food and recreation.Vertebrate Classes

Agnatha (Jawless Fish) Aves (Birds) Amphibia (Amphibians) Chondrichthyes (Rays, Sharks, Skates) Mammalia (Mammals) Osteichthyes (Bony Fish) Reptilia (Reptiles)

Explanation:

Answer:

The choice b

Explanation:

took the test

Answer:

these r so many which one?

Explanation:

Answer:

i think

Explanation:

Answer:

The correct answer is -

A. axon

B. dendrite

C. neurotransmitter

D. Synapse

Explanation:

The given diagram is the representation of two neurons connected by the chemical signal. Each neuron has a nerve fiber that carries the nerve signal from one neuron to another covered with sheath, this body is called Axon.

Axon is connected with dendrite, which receives a signal from other neurons and is arise from the cell body of neurons in various numbers. The site where two neurons meet called synapse which is releases neurotransmitters a chemical signal molecule.

Answer:

2, 4, and 5 refers to scientific revolution while on the other hand, the remaining statements shows scientific observation.

Explanation:

Cloning has the potential to  significantly benefit a great many  people, so it should not be  considered immoral or risky is refers as scientific observation.

A scientist thinks that he might  find serious inconsistencies in the  fossil record if he conducts an  excavation in a new location is refers scientific explanation because explanation is needed for it which can drawn from the scientific observation.

The rocks present in western Africa  and eastern South America formed  at the same place and at the  same time is scientific observation because the scientists takes the data.

Even if modern organisms are  found in ancient portions of the  fossil record, this wouldn't challenge the theory of evolution in any way is refers to scientific explanation.

The cloning of organisms is an  exciting area of study, and more  resources should be be devoted  to it so it is refers as scientific explanation.

The age, type, and composition of  ancient rocks in western Africa are  nearly identical to the age, type,  and composition of rocks in  eastern South America is scientific observation which is taken by the scientist through research.

Answer:

pine trees

Explanation:

pine trees grow in cold areas where seed cannot be placed in flowers or fruits. hence they are placed in pine cones which protect the seed from cold and harsh weathers

Answer:

Mosses and Ferns

I did the test and this was the answer, hope this helps

Answer:

"The main role of plasma is to take nutrients, hormones, and proteins to the parts of the body that need it. Cells also put their waste products into the plasma."

Answer:

Why is it hotter at the equator than it is at the poles? ... Because the sun's rays hit the earth's surface at a higher angle at the equator.

Answer:

I

Explanation:

Answer:

B Biosphere is the system in which the arrows represent waters intro.

Answer:

double

Explanation:

B

Double bond must exist between the last carbon and the other carbon atom.

Unsaturated fats are commonly biosynthesized by a one of a kind dehydrogenation response called desaturation. The science of this change is wonderful in its selectivity.

The development and use of novel robotic tests (deutero-, fluoro-, thia-containing substrate analogs) has prompted a more refined comprehension of how unsaturated fat desaturases and related compounds complete their super particular oxidation science. The stereochemistry and request of hydrogen expulsion has been inspected for various solvent and layer bound desaturses.

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Answer: They have well-defined skeleton.

Explanation:

This is because the vertebrates are uniquely characterised by the presence of the bones.

Answer:

Answer is A)They have a well-defined skeleton

Explanation:

most reasonable answer

Answer:

B. Calcium

Explanation: short answer

Answer:

Calcium

Explanation:

Answer:

All plant cells contain a nucleus, a structure that stores DNA and acts as a cell's command center. It is surrounded by the nuclear envelope and is filled with nucleoplasm. ... DNA is copied during DNA replication for new cells, as well as copied to RNA to make proteins in the nucleus.

Answer:

C.

there are other insect species that also pollinate the plant.

Explanation:

Answer

Rose Bush

Explanation:

Rose bush is an example of a producer. Therefore, the correct statement is option C.

Producers are organisms that produce their own food through photosynthesis and form the base of the food chain by providing food for all other organisms in the ecosystem. For example, plants, algae, and some bacteria are few examples of producers.

The rose bush is a producer belonging to the kingdom Plantae and can produce its own food through photosynthesis where it converts light energy into chemical energy. The rose bush also contains specialized structures called chloroplasts to carry out photosynthesis.

Moths and cheetahs cannot produce their own food. Moths, on the other hand, are insects belonging to the class Lepidoptera and feed on plants or other insects and mushrooms obtain their nutrients from dead organic matter and are decomposers which play an important role in breaking down organic matter in the ecosystem.

Therefore, rose bush is an example of a producer.

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Answer:

please mark as brainliest answer as it will also give you 3 points

Explanation:

Cyclin-dependent kinases (CDKs) are the families of protein kinases first discovered for their role in regulating the cell cycle. They are also involved in regulating transcription, mRNA processing, and the differentiation of nerve cells.[1] They are present in all known eukaryotes, and their regulatory function in the cell cycle has been evolutionarily conserved. In fact, yeast cells can proliferate normally when their CDK gene has been replaced with the homologous human gene.[1][2] CDKs are relatively small proteins, with molecular weights ranging from 34 to 40 kDa, and contain little more than the kinase domain.[1] By definition, a CDK binds a regulatory protein called a cyclin. Without cyclin, CDK has little kinase activity; only the cyclin-CDK complex is an active kinase but its activity can be typically further modulated by phosphorylation and other binding proteins, like p27. CDKs phosphorylate their substrates on serines and threonines, so they are serine-threonine kinases.[1] The consensus sequence for the phosphorylation site in the amino acid sequence of a CDK substrate is [S/T*]PX[K/R], where S/T* is the phosphorylated serine or threonine, P is proline, X is any amino acid, K is lysine, and R is arginine.[1]

Answer: A cell organelle is defined as a cellular structure which has a specific function. The structure and function of these organelles as explained below.

Explanation:

--> NUCLEUS: This is the largest and most important cell organelle. It is enclosed by a double- layered nuclear membrane with many pores. The structure of the Nucleus makes it the 'control center' of the cell. This, it contains genetic materials( chromosomes) which controls the Production of a new cell or the whole organism itself and it controls the type and quantity of proteins( enzymes) produced in the cytoplasm.

--> ENDOPLASMIC RETICULUM(ER): this is a system of membrane-lined sacs that form channels throughout the cytoplasm. It's membrane is continuous with the nuclear membrane. There are two types of endoplasmic reticulum: rough and smooth. The rough ER packs and transports proteins made by ribosome while the smooth ER is involved in lipid and steroid synthesis.

--> GOLGI BODY: This is a stack of membrane-lined sacs. It is continuously formed at one end and broken off as bubbles or vesicles at the other end. These vesicles carry 'export materials' like enzymes and hormones which the cell makes.

--> MITOCHONDRIA: This is a sausage-shaped body surrounded by a double-membrane layer. The inner membrane is folded to form partitions which project into the inside of the mitochondria. The energy producing reactions of cellular respiration take place in the mitochondria. It is thus often called the cell's 'power- house'.

LYSOSOMES: These are small round sacs that contains digestive enzymes which break down structures and substances. They are also involved in the transport of materials in and out of the cell.

RIBOSOME: These are found on the surface of rough endoplasmic reticulum and are sites for protein synthesis of the cell.

CENTRIOLE: Two rod-like centrioles are found at right angles to each other in an animal cell. They are found near the nucleus and seem to be concerned with cell division.