what were some of the earliest life forms? and what were they like
Look at the graph below. A graph is shown with Absolute magnitude shown on y axis and Surface temperature in degree Celsius shown on x axis. The Dwarf stars are shown along a slanting line from coordinates 30,000 and minus 3 to 10,000 and minus 4. The Main Sequence stars are shown along a slanting line from coordinates 20,000 and minus 2 to 2,000 and minus 6. The giants are shown along a line parallel to the x axis from coordinates 5,000 and 2 to 2,000 and 3. The supergiants are shown along a line parallel to the x axis from coordinates 7,500 and 4 to 2,500 and 4. Point A has coordinates 20,000 and minus 4. Point B has coordinates 2,500 and minus 4. Point C has coordinates 5,000 and 2. Point D has coordinates 7,000 and 4. Which of the following stars is most likely to be red? Star A Star B Star C Star D
Answer:
Star A
Explanation:
If you look directly at the diagram, the dwarf stars are labeled under 'A' and are the least in mass and temperature.
Being the smallest and coldest, dwarf stars most commonly have red coloration, which would make them the obvious choice.
Star A which is a dwarf star has the coldest temperature, and therefore is a red star since red stars are the coldest stars.
What are stars?Stars are a large self-luminous bodies whichbpriducw large amounts of heat energy and light energy as a result of the nuclear reactions occurring within them.
Stars have different colors and different sizes.
Red stars are the coldest stars and also the least massive.
From the chart, Star A which is a dwarf star has the coldest temperature, and therefore is a red star.
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What happens to a mother offspring when a mutation is in her gamete cells
Answer: her child will have the mutation in all of his/her cells
Explanation:
Identify the converted product of the photosynthesis process.
Why do carnivorous
plants sometimes "eat" insects and other organisms?
Answer:
Because.they are carnivours ya know
Answer:
Like all plants, carnivorous plants are capable of photosynthesis. Since they usually live in areas where the soil quality is poor, they must supplement their diet with nutrients gained from digesting animals. Like other flowering plants, carnivorous plants use tricks to entice insects.
Explanation:
hope this helps have a good rest of your day/night :)
Drag each image to indicate whether it shows point source pollution or non-point source pollution
Answer: The first and the last are point source and the second and third are non-point source.
Explanation: I got these right on the quiz.
The first image and the last image are point source pollution while the second and third images represent non point source pollution.
A point source pollution refers to a pollution that is emerging from a particular point such as from a pipe. It is traceable to a given source. The non - point source pollution is not traceable to any particular source.
In the image as shown, the first image and the last image are point source pollution while the second and third images represent non point source pollution.
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Which type of reproduction is shown below
Answer:
ummm there is no reproduction shown below
What are the locations and end products for the processes of transcription and
translation?
The cytoplasm is the site of translation, the next process that converts a gene into a protein. In order to “read” the sequence of mRNA nucleotides, the ribosome, a specialized complex, interacts with the messenger RNA.
What is role of gene expression in an organism?It serves as both a volume control that raises or lowers the level of proteins produced, and an on/off switch to regulate when proteins are created.
Because a particular protein can only be made when its gene is turned on, gene expression is significant.
But the process of turning a gene into a protein involves numerous steps, and one of these phases—the production of proteins—is essential for the gene expression pathway that can be altered in cancer.
Therefore, transcription occur at nucleus and translation take place in cytoplasm.
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3. Gregor Mendel cross-pollinated red and white snapdragon flowers,
What information indicates that incomplete dominance was achieved?"
O the offspring had heterozygous allels
O the offspring had recessive alleles
O the offspring were pink
O the offspring were red
Dissolving CO2 in the ocean is an example of which sphere movement?
(PLEASE HELP I WILL MARK BRAINLEST) Limestone is a sedimentary rock and marble is a metamorphic rock. Despite limestone and marble having the same chemical makeup, which statement describes why they are classified as different rocks?
They formed at different times.
They were formed from different fossils.
They were formed by different methods.
They formed in different amounts of time.
Answer:
The were formed by different methods
They were formed by different methods is the statement that describes that limestone and marble are classified as different rocks.Therefore, the correct option is C.
What is limestone?Limestone is a sedimentary rock primarily made up of calcium carbonate (CaCO3) in the form of the mineral calcite. It is formed from the accumulation of shells, coral, and other debris from marine organisms.
Marble is a metamorphic rock that forms from limestone, which is a sedimentary rock composed primarily of calcium carbonate (CaCO3). It is formed through a process of metamorphism, which involves the transformation of the original rock through heat and pressure over time. Therefore, the correct option is C.
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The question is incomplete, but most probably the complete question is,
Limestone is a sedimentary rock and marble is a metamorphic rock. Despite limestone and marble having the same chemical makeup, which statement describes why they are classified as different rocks?
A. They formed at different times.
B. They were formed from different fossils.
C. They were formed by different methods.
D. They formed in different amounts of time.
Which factor can decrease the rate of a chemical reaction?
low activation energy
high pressure
low temperature
high concentration of enzyme
help plsllsss
question on picture
Answer:
Body temperature
Explanation:
It is advantageous for a predator to prey exclusively on a single prey species.
Answer:
Assuming this is a true/false question, the answer would be false.
If a predator only preyed on one species, it would be at a disadvantage if the prey it feeds on gets wiped out in that region.
Therefore, your answer is False.
answer pls! with the roman numerals
Answer:
i am quiet sure the answer is III,V,II,I,VI
Explanation:
4. The fusion sequence in our Sun starts with two
slamming together.
O neutrons
O protons
O electrons
O neutrinos
Answer:
Coc.k
Explanation:
Coc.k
How many chlorine atoms are there in the molecule NiCl2
Answer:
2, that’s what the 2 means.
Explanation:
how do photosynthesis and cellular respiration affect the CO2 and O2 in our atmosphere?
Cellular respiration and photosynthesis are important parts of the carbon cycle. The carbon cycle is the pathways through which carbon is recycled in the biosphere. While cellular respiration releases carbon dioxide into the environment, photosynthesis pulls carbon dioxide out of the atmosphere.
PLEASE HURRY
Which pair of structures would provide a positive identification of an animal cell under a microscope?
flagellum, lysosome
nucleus, mitochondrion
ribosome, cell wall
chromatin, chloroplast
flagellum, lysosome: Both of these are found in animal cells, but the real difference is flagellum is ONLY found in animal cells
nucleus, mitochondrion: Both of these are found in Animal cells X
ribosome, cell wall: Cell wall is only in plants X
chromatin, chloroplast: Chloroplast is only found in plant cells X
Explanation:
Firstly cell wall and chloroplasts can only be found in plant cells and will not appear in an animal cell.
Flagellum usually appears in many bacteria (microorganism) and only a few animal cells. Most animal cells do not have flagellum.
However animal cells do have a nucleus which contains important genetic material such as DNA and mitochondrion which creates energy for the cell to use for metabolism inside the cell. (Even though most eukaryote cells have these 2 organelles)
Between the 1st and 2nd options, none of them is exactly correct. But nucleus and mitochondria are more widely found in various types of cells (plants, etc.)
I would choose the 1st option as the best answer here because it is more detailed.
3. Which process is most directly involved in the
production of egg cells by a female frog?
Identify the labeled structures.
A: B: C: D: E:
The multiple questions are the same for each question. Please help!
Answer:
e cell wall that is the only one I am sure of because I can hardly see the rest
How many different ways can the 23 homologous pairs in a human germ cell arrange themselves during Metaphase I?
Answer:
eight million
Explanation:
Eight million different ways can the 23 homologous pairs in a human germ cell.
What is Homologous pairs?One of a pair of chromosomes with the same gene sequence, locations, chromosomal length, and centromere placement is referred to as a homologous chromosome. One paternal and one maternal chromosome make up a homologous pair.
A somatic cell of a human has a total of 46 chromosomes in its nucleus. The father inherits half of them (22 autosomes Plus X or Y chromosome), while the mother inherits the other half (22 autosomes + X chromosome).
A female typically has 23 homologous chromosomes, compared to a male's 22. This is due to the fact that men' X and Y sex chromosomes are not identical. During meiosis, homologous chromosomal pairing is crucial.
Therefore, Eight million different ways can the 23 homologous pairs in a human germ cell.
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The DNA sequences below show DNA segments for four different species. DNA SEQUENCES Species A TGG CAA CGG CAG ATT TAG Species B TGG CTA CGG CAG ATT TAG Species C TGC CTA CGG CTG ATT TAG Species D TGG CTA CTG CTG ATT TAG Scientists sometimes use DNA sequences such as these to determine the relatedness of different species. Which of the following is a necessary condition for scientists to use DNA sequences in this way?
Answer: I think it's A: the DNA of all organisms contains the same four bases.
Answer:
It’s C
Explanation:
I took the test
Cathy's favorite salad dressing is a liquid with particles of salt, pepper, and garlic. When comparing a spoonful of salad dressing to a cell, what would the liquid be equivalent to? What would the particles be equivalent to?
Answer:
Liquid equivalent to "cytoplasm" and the particles equivalent to "organelles".
Explanation:
While comparing a liquid salad dressing to a cell, the liquid will be equivalent to "cytoplasm" because cytoplasm is a thick solution present in each cell that made up of water, salts, and proteins.
The particles would be equivalent to "organelles" because as particles float in liquid salad adding flavours to the salad likewise organelles are present in a cell floating in the cytoplasm that performs a specific function.
Hence, the correct answer is " liquid will be equivalent to "cytoplasm" and the particles will be equal to "organelles".
To sciences do not agree on which type of grocery bag is better for the environment what is the most likely outcome of this disagreement
Answer:
paper bags jute bags , cotton bags might be used for the environment
What are gametes?
male and female reproductive organs
male and female reproductive tissues
male and female reproductive systems
male and female reproductive cells
Answer:
male and female reproductive cellsExplanation:
I hope it helps ❤❤Answer:
the last one
Explanation:
What events must have occurred for fossils of marne organisms to be in a mountain far above sea level?
Answer:
el sapo
Explanation:
How does the body maintain blood sugar levels? your own words
Answer:
When the body does not convert enough glucose, blood sugar levels remain high. Insulin helps the cells absorb glucose, reducing blood sugar and providing the cells with glucose for energy. When blood sugar levels are too low, the pancreas releases glucagon.
Explanation:
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PLEASE HELP ME - In 1839, Schleiden and Schwann began formulating a theory of cells and their role in living organisms. Over time, cell theory has been updated. Modern theory is summarized below. All known living things are made up of cells. The cell is the structural and functional unit of all living things. All cells come from pre-existing cells by division. The flow of energy occurs within cells. Cell theory explains all of the following except a. the growth of animals. b. how viruses require the cells of living organisms to survive. c. how bacteria reproduce. d. the storage of chemical energy in plant cells.
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Why are the DNA molecules considered to be semi-Conservative?
Answer:
do you have the pic?
Explanation:
Answer:
DNA replication is said to be semi-conservative because of this process of replication, where the resulting double helix is composed of both an old strand and a new strand. ... Semiconservative replication would produce two copies that each contained one of the original strands and one new strand.
Explanation: