Can someone please help I’ll give brainliest!

The questions are:
1. What are the constants (variables that stay the same- also called controlled variables)?
2. What is the independent variable ?
3. What is the dependent variable?
4. What flaw in the design of the experiment can you find ? Explain .
5. What hypothesis do you think the scientists are trying to test?

Answer:

yes

Explanation:

fishes lay thousands of eggs at one time in fact!!!

Answer:

NO

Explanation: Fish carry there children in a womb. the fish eggs you see in recipes are from cutting a fish open and taking them.

Answer:

Some of the most important organelles that cytoplasm contains are the ribosomes, mitochondria, proteins, the endoplasmic reticulum, lysosomes, and the the Golgi apparatus

hope this helps :)

Explanation:

Answer:

Homologous pairs separate in first round of meiosis or meiosis 1

However,

sister chromatids separate in second round of meiosis or meiosis 2.

According to the Dalton's theory, carbon and oxygen are different elements because they are made up of different atoms which have different numbers of proton and neutrons.

John Dalton proposed his modern theory of atoms in 1803. He discovered atom, which is the smallest unit of particle. This theory is also known as the atomic theory of matter.

In this theory, he stated that every single atom of an element, such as sodium, is same as the other atoms of the same element. He also stated that the atoms of one element differ from the atoms of other elements. This theory is mostly found to be true. For example: A sodium atom is different from a carbon atom.

However, his theory was found to be found as the atoms present in the elements are found to be divisible into even smaller particles like protons, neutrons, and electrons.

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Answer:

Radiation is the transfer of heat energy through space by electromagnetic radiation.

Explanation:

Most of the electromagnetic radiation that comes to the earth from the sun

Answer:

400?

Explanation:

because if the foxs dont have food then they will starve and die as well

Answer:

S phase!                       !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! hope this helped                  

1. No credible source

2. Check if its a biased answer

3. Examine evidence

Answer: Hydrogen bonds

Explanation:

Answer:

I don't have answer to this but i'll make you understand it says how Robert Hooke finding is different from the other scientists like schleiden ? what do you prove the discoveries of the scientific world ? you just have to type that in the Blank space.

Answer:Well, rocks were originally sediments, which were compacted under high pressure. Igneous rocks formed when liquid magma or lava—magma that has emerged onto the surface of the Earth—cooled and hardened.

Explanation:

Answer:

An example of a base that humans use in day to day life is things such as cleaners, a strong base is beneficial to humans in this way because it can dissolve grease and protein. On the other hand acids are very important as well because strong acids can be found in the human stomach, we would not be able to digest food without this acid presence

Explanation:

Hope this helps!

Answer:

yes it can

Explanation:

cause it creates

Answer:

Depends. I mean, the sun is necessary for our survival, since it's the thing that allows for plants to grow. I guess you can consider it a food resource.

Answer:

l think

b. one week after the full moon phase

Answer:

The organism's diploid number is 40.

Explanation:

Haloed means half and Diploid means double of half. So in this case if it's haloed is 20, 20*2=40. The diploid number is 40.

Answer:

yes

Explanation:

So chemicals don't get in your eyes.

Answer:

goggles sre worn so that a person can be saved from any chemical bomb or side affects

Answer:

sodium chloride, magnesium, sulfate, calcium, potassium, as well as dissolved gases, including nitrogen, oxygen, and carbon dioxide.

Explanation:

Ocean water little a lower freezing point, and higher electrical conductivity due to salt.

Seawater has special qualities such as being salted, having a little lower freezing point than freshwater, being significantly denser, having a lot higher electrical conductivity, and being slightly basic.

The two ions that are most often found in seawater are sodium and chloride. Over 90% of the dissolved ions in saltwater are made up of chloride and sodium.

Seawater has a salinity of around 35 parts per thousand of salt. 96.5 percent of seawater is made up of pure water, 2.5 percent salt, and minor quantities of dissolved inorganic and organic compounds.

Therefore, due to salt ocean water has higher electrical conductivity and other properties.

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Answer:a negative impact is global warming due to the over use of fossil fuels. a positive impact is the way we control the food chains and keep overpopulation from other species from happening.

Explanation: look above

Answer: nuclear wall

Answer:

various factors of climate change can effect the environment  

Explanation:

1. extreme heat - droughts, bushfires

2. flooding effects infrastructure

3. rising in sea levels

Answer:

Prokaryotes explanation

Explanation:

Prokaryotes are single-celled organisms that are the earliest and most primitive forms of life on earth. As organized in the Three Domain System, prokaryotes include bacteria and archaeans. Some prokaryotes, such as cyanobacteria, are photosynthetic organisms and are capable of photosynthesis.  

Many prokaryotes are extremophiles and can live and thrive in various types of extreme environments including hydrothermal vents, hot springs, swamps, wetlands, and the guts of humans and animals (Helicobacter pylori).

Prokaryotic bacteria can be found almost anywhere and are part of the human microbiota. They live on your skin, in your body, and on everyday objects in your environment.

Prokaryotic Cell Structure

Bacterial Cell Structure

Bacterial Cell Anatomy and Internal Structure. Jack0m/Getty Images

Prokaryotic cells are not as complex as eukaryotic cells. They have no true nucleus as the DNA is not contained within a membrane or separated from the rest of the cell, but is coiled up in a region of the cytoplasm called the nucleoid.

Prokaryotic organisms have varying cell shapes. The most common bacteria shapes are spherical, rod-shaped, and spiral.

Using bacteria as our sample prokaryote, the following structures and organelles can be found in bacterial cells:

Capsule: Found in some bacterial cells, this additional outer covering protects the cell when it is engulfed by other organisms, assists in retaining moisture, and helps the cell adhere to surfaces and nutrients.

Cell Wall: The cell wall is an outer covering that protects the bacterial cell and gives it shape.

Cytoplasm: Cytoplasm is a gel-like substance composed mainly of water that also contains enzymes, salts, cell components, and various organic molecules.

Cell Membrane or Plasma Membrane: The cell membrane surrounds the cell's cytoplasm and regulates the flow of substances in and out of the cell.

Pili (Pilus singular): Hair-like structures on the surface of the cell that attach to other bacterial cells. Shorter pili called fimbriae help bacteria attach to surfaces.

Flagella: Flagella are long, whip-like protrusions that aid in cellular locomotion.

Ribosomes: Ribosomes are cell structures responsible for protein production.

Plasmids: Plasmids are gene-carrying, circular DNA structures that are not involved in reproduction.

Nucleoid Region: Area of the cytoplasm that contains the single bacterial DNA molecule.

Prokaryotic cells lack organelles found in eukaryoitic cells such as mitochondria, endoplasmic reticuli, and Golgi complexes. According to the Endosymbiotic Theory, eukaryotic organelles are thought to have evolved from prokaryotic cells living in endosymbiotic relationships with one another.  

Like plant cells, bacteria have a cell wall. Some bacteria also have a polysaccharide capsule layer surrounding the cell wall. This is the layer where bacteria produce biofilm, a slimy substance that helps bacterial colonies adhere to surfaces and to each other for protection against antibiotics, chemicals, and other hazardous substances.

Similar to plants and algae, some prokaryotes also have photosynthetic pigments. These light-absorbing pigments enable photosynthetic bacteria to obtain nutrition from light.

Binary Fission

E. coli Bacterium Binary Fission.

E. coli bacteria undergoing binary fission. The cell wall is dividing resulting in the formation of two cells. Janice Carr/CDC

Most prokaryotes reproduce asexually through a process called binary fission. During binary fission, the single DNA molecule replicates and the original cell is divided into two identical cells.

Steps of Binary Fission

Binary fission begins with DNA replication of the single DNA molecule. Both copies of DNA attach to the cell membrane.

Next, the cell membrane begins to grow between the two DNA molecules. Once the bacterium just about doubles its original size, the cell membrane begins to pinch inward.

A cell wall then forms between the two DNA molecules dividing the original cell into two identical daughter cells.

Although E.coli and other bacteria most commonly reproduce by binary fission, this mode of reproduction does not produce genetic variation within the organism.  

Prokaryotic Recombination

Bacterial Conjugation

False-color transmission electron micrograph (TEM) of an Escherichia coli bacterium (bottom right) conjugating with two other E.coli bacteria. The tubes connecting the bacteria are pili, which are used to transfer genetic material between bacteria. DR L. CARO/Science Photo Library/Getty Images

Genetic variation within prokaryotic organisms is accomplished through recombination. In recombination, genes from one prokaryote are incorporated into the genome of another prokaryote.

Recombination is accomplished in bacterial reproduction by the processes of conjugation, transformation, or transduction.

Capsule, cell wall, cell membrane, pilus, flagella, ribosomes, nucleoid, and plasmids are the parts of prokaryotic cells.

Single-celled creatures known as prokaryotes are the earliest and most basic living forms on Earth. Bacteria and archaeans are prokaryotes, which are classified according to the Three Domain System. Some prokaryotes are photosynthetic creatures and can do photosynthesis, such as cyanobacteria.

Prokaryotic bacteria are ubiquitous and comprise a significant portion of the human microbiome. They exist on your skin, inside your body, and on commonplace items in your surroundings.

Bacteria, as a sample prokaryote, its cells have the following organelles and structures:

Therefore, the capsule, cell wall, cell membrane, pilus, flagella, ribosomes, nucleoid, and plasmids are the parts of the prokaryotic cells.

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