A student wants to view live organisms less than 1 millimeter in size, which are found in a water sample collected from a stream. Which microscope would be best for the student to use while observing these living organisms?

Answers

Answer 1

Answer: i think second ikr thought for sure so i’m yea sorry but if u get the answer lmk bc i’m doing it rn

Explanation:

Answer 2

Answer:

A

Explanation:

taking the test


Related Questions

Your friend is terrified of going to the doctor, mostly because there is often a shot at the end of the visit. Explain to your friend what a vaccine does and why it is so important for the body to be protected against viral pathogens.

Answers

Vaccines is just the weakened pathogen, with the shot, your immune system in a way "upgrades" and in the future it will know how to kill off that pathogen

what is enormously important to the surrieal of specicies because it allowed populations ot better handle enviromental cariables such as weather extrences changed in food supply or disease

Answers

Answer:

I don't know sorry

Explanation:

I thought I new the answer but now I am not sure.

im timed lol pls help

Answers

cellular respiration ..hope this helps!

Answer:

3.) Cellular respiration

Explanation:

During cellular respiration, the energy stored in glucose is transferred to ATP.

During this, glucose, in the presence of oxygen, is converted into carbon dioxide and water.

glucose + oxygen → carbon dioxide + water.

During this process, the energy stored in glucose is transferred to ATP.

Hope this helps you out! : )

what's the answerrrrrr

Answers

Answer:

B

Explanation:

this might be easy but i dont know​

Answers

cellular respiration.

What percentage of the offspring are expected to show the dominant phenotype from the
cross Tt x tt?

Answers

Answer:

vfyrdful.itrehsdtyukyxse

Explanation:

ukfyuiugfthy

Answer:

Tt jsjwisjsnanjqkqw aahwhza

Why is it important that your body has the ability to replicate your DNA?

Answers

Answer:

In order for an organism to grow, develop, and maintain its health, cells must reproduce themselves by dividing to produce two new daughter cells, each with the full complement of DNA as found in the original cell. Billions of new cells are produced in an adult human every day.

Explanation:

You might need help anymore so can I take these ?

Respiration is a process where many chemical bonds inside the body break and release energy. This energy is used to perform various activities such as moving muscles. Explain the energy transformation in this process.
A. Chemical energy from broken bonds is transformed into mechanical energy for muscles.
B. Mechanical energy from broken bonds is transformed into chemical energy for muscles.
C. Mechanical energy from broken bonds is transformed into electrical energy for muscles.
D. Heat energy from broken bonds is transformed into electrical energy for muscles.

Answers

Answer:

I'm not great at science and especially not biology but

Explanation:

the energy is transformed by the nucleus inside the cell and energy is held there it will soon release motonchdria holds the blood cell and energy will be transformed somewhat that way sorry if it doesnt help

Answer: A Chemical energy from broken bonds is transformed into mechanical energy for muscles.

Explanation:

PLATO

how do you calculate the adjusted amount of energy that is available to organisms that are one trophic level above producers
A. Net primary productivity plus gross primary productivity
B. Gross primary productivity minus net primary productivity
C.net primary productivity plus amount of organic material used in respiration
D. Gross primary productivity minus amount of organic mayerial used in respiration

Answers

Answer:

1. B- gross primary productivity minus amount of organic material...

2. D- Increases

3. B- by observing cellular respiration under the absence of light

4. D- dead organisms and waste are recycled throughout the trophic levels.

5. C- the rate that plants and other photosynthetic...

Explanation:

Life Processes Quick Check

Got 100% <3

The amount of energy that is available to organisms above producers is equal to the gross primary productivity minus the amount of organic material used in respiration (Option D).

Producers (e.g, plants, algae) are all autotrophic organisms at the first trophic level of the food chain in a particular ecosystem.

Gross primary productivity refers to the net amount of carbon fixed by producers in a particular ecosystem.

Moreover, the net primary productivity refers to the net amount of carbon dioxide that is fixed by producers (i.e., organic material) in an ecosystem minus the amount of organic material that is used for metabolic activities, i.e., during cellular respiration.

Therefore, the net primary productivity (NPP) can be estimated as the gross primary productivity (GPP) minus respiration rate (R):

NPP = GPP - R

In conclusion, the amount of energy that is available to organisms above producers is equal to the gross primary productivity minus the amount of organic material used in respiration (Option D).

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PLEASE HELP I WILL GIVE BRAINLIEST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
What are the main differences between the characteristics A1 and A2

Answers

Answer:

circles are positive and lines are negative

Explanation:

What is an example of a physical weathering?(1 point)

A. a rock wearing down due to acid rain
B. microscopic organisms producing compounds that break down rock
C. a metal tool left outside beginning to rust
D. bits being blown off a rock by heavy winds

Answers

Answer:

C.

Explanation:

Answer:

answer is bits being blown off a rock by heavy winds.

Explanation:

just took test

What are the characteristics of a population, a community, and an ecosystem?

Answers

Answer:

Population - All the members of one species that live in a defined area.

Community - All the different species that live together in an area.

Ecosystem - All the living and non-living components of an area.

what is enzyme please tell me grade 7

Answers

Answer:

a biological catalyst which speeds up reactions without being used up

Explanation:

Which of these would form first during the development od a complex multicellular organism, such as an animal?

A) cell
B) organ
C) tissue
D) organ system​

Answers

Answer:

Cell

Explanation:

Cells are the fundamental blocks and will certainly form first before anything other develops

Answer:

A

Explanation:

Cells are the building blocks of life and there for the first to develop

What is the other molecule of the sides that lies in between the sugars?

Answers

Answer:

Deoxyribose and phosphate

Explanation:

The other molecule of the sides that lies in between sugar are deoxyribose and phosphate. The sugar has the nitrogenous based molecule attached to it.

Help Please anyone? I'm innocent! Help the innocent! Please!

Answers

Answer:

False

False

False

True True

Why does the thermosphere have the highest temperature of alle
atmosphere layers?
O A. It has the least gas particles.
B. It is closest to the sun.
C. It contains the ozone layer.
D. It is the thinnest layer.

Answers

Answer: B.

Explanation:

The thermosphere is most directly affected by the Sun’s radiation.

The thermosphere have the highest temperature of alle atmosphere layers It is closest to the sun.

What is Thermosphere?

A portion of the Earth's atmosphere known as the thermosphere is situated precisely above the mesosphere and under the exosphere. It stretches from around 90 km (56 miles) to 500–1,000 km above the surface of our planet.

In the lower thermosphere temperatures rise dramatically before leveling off and remaining rather constant as altitude rises above that point. The thermosphere's temperature is significantly influenced by solar activity.

In general, the thermosphere is around 200° C hotter during the day than at night, and about 500° C  hotter during periods of high solar activity.

Therefore, The thermosphere have the highest temperature of alle atmosphere layers It is closest to the sun.

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Describe the
relationship
between rock
layers and an
intrusion from
igneous rock

Answers

Answer:

rock layers are the layers of the earth's crust. igneous rock is volcanic lava after it has hardened

Karyograms are used to deduce sex and diagnose genetic diseases in humans. What would not be determined from a karyogram?

#1
translocation of chromosome 13

#2
base substitution in a gene on chromosome 13

#3
absence of chromosome 13

#4
deletion of chromosome 13

Answers

Answer: base substitution in a gene on chromosome 13

Which types of cells have genetic material that is contained in a nucleus

Answers

Answer:

There are two basic types of cells, prokaryotic cells and eukaryotic cells. The main difference between eukaryotic and prokaryotic cells is that eukaryotic cells have a nucleus. The nucleus is where cells store their DNA, which is the genetic material. The nucleus is surrounded by a membrane.

Eukaryotic cells have a nucleus which is where they store their genetic material and a prokaryotic cells doesn’t have a nucleus :)

hope this helps!!

Please help, thank you! (Look at the picture)

Answers

Answer:                                T      t

                   

Explanation:                T    TT     Tt                                                    t      Tt         ttthis is the way your supposed to set it uphopes this helps

Phospholipid bilayer:

Fibrous Protein:

Pore Protein:

Glycoprotein:

Channel protein:

Answer: -Forms a pone for movement of water -Transports ions -Used for identification of cells -Receptors for the cell -2 layers that limit what enters or leaves the cell​

Answers

Answer:

Phospholipid bilayer: layers that limit what enters or leaves the cell​

Fibrous Protein: Receptors for the cell

Pore Protein: Transports ions

Glycoprotein: Used for identification of cells

Channel protein: Forms a pone for movement of water

Explanation:

Phospholipid bilayer is consist of two layers, interior layer is hydrophilic (water loving) and exterior layer is hydrophobic (water hating). This layer functions as a selectively permeable membrane and allows only required materials into the cell.

Fibrous Protein is one of the type of protein and act as cell surface receptor. for example: collagen and fibronectin act as cell surface.

Pore Protein are beta barrel proteins that creates pores for the ions to diffuse across the cell.

Glycoproteins are located on the surface of the lipid bilayer and act in cell-cell recognition and bind to the cell after recognizing or identifying properly for further procedure.

A channel protein is a channel in he cell membrane that is made up of amino acids. It forms a hydrophilic gateway for water and small, polar ions.

Hence, the correct answer is:

Phospholipid bilayer: layers that limit what enters or leaves the cell​

Fibrous Protein: Receptors for the cell

Pore Protein: Transports ions

Glycoprotein: Used for identification of cells

Channel protein: Forms a pone for movement of water

Exocrine glands, such as sweat glands, secrete fluids through ducts. _______ glands secrete hormones directly into the bloodstream.

Answers

Pretty sure it’s the endocrine glands they also produce and distribute hormones into the blood stream.

Only sunspots can be called solar activity.

True
False

Answers

Answer:

false

Explanation:

Answer:

Its false

Explanation:

(20 points) Aerobic cellular respiration takes place in the mitochondria and uses oxygen to break down glucose. However, when cells need large amounts of energy and no oxygen is available, anaerobic respiration can take place in the cytoplasm. What is the difference in the products of aerobic and anaerobic cellular respiration?

Answers

Answer:

pretty sure its

Explanation:

Which statement describes the relationship between a gene and an allele?

Alleles are different versions of a gene

Genes are different versions of an allele


Many genes make up an entire allele

Alleles are similar genes from different species of organisms.

Answers

Answer:

alleles are different versions of a gene

I don't know. does this help: A gene is a portion of DNA that determines a certain trait. An allele is a specific form of a gene. Genes are responsible for the expression of traits. Alleles are responsible for the variations in which a given trait can be expressed.

Which example best describes a reflex action? A. bending down to lift a heavy object B. going for a walk outside C. eating food when hungry D. coughing when the throat is irritated

Answers

Answer:

I believe the answer is coughing when throat is irritated.

Explanation:

I chose this answer because since your throat is hurting, you usual don't eat more candy, you cough because it is a reflex that happen with our bodies.

The correct answer should be D

Compare and contrast the three types of muscle tissue. skeletal muscle, cardiac muscle, and smooth muscle.

Answers

Answer:

While skeletal muscles are arranged in regular, parallel bundles, cardiac muscle connects at branching, irregular angles, called intercalated discs. Striated muscle contracts and relaxes in short, intense bursts, whereas smooth muscle sustains longer or even near-permanent contractions.

Which of the following are crucial to maintaining the balance of the ecosystem

Answers

Answer:

Human being plays a key role to maintain ecological balance because they have the highest thinking capacity as compared to other living organisms. Sufficient food availability to all living organisms and their stability reflect the existence of ecological balance.

Explanation:

PLZZZ HELP ME
A large population of ground squirrels were separated over time by the Grand Canyon, eventually creating two new species.


Giraffes with longer necks are able to reach more food, live longer, and pass on long necks to more babies.


Arctic foxes have developed two-layered fur coats; a white layer for the extra cold winters and a thinner, brown layer for the short summers.


A flood washes away most of a population of field mice. Only those who lived in the roots of trees survived to pass on their genes.


UV radiation causes a mistake in a gene; changing one letter in the DNA code and causing a new eye color.

1.
Natural Selection

2.
Mutation

3.
Adaptation

4.
Genetic Drift

5.
Evolution

Answers

Answer:

1. Genetic drift

2. Natural selection

3. Adaption

4. Mutation

Explanation:

I'm not entirely sure that this is all correct, but for 2. Natural selection makes sense, and for the foxes that is adaption. I'm unsure about the first question though.

Hope this helps you a bit. Good luck on your studies.

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