Answer:
I hope this answer helps you. Please mark me as brainliest and rate.Explanation:
In physical geography, tundra is a type of biome where the tree growth is hindered by low temperatures and short growing seasons. The term tundra comes through Russian тундра from the Kildin Sámi word тӯндар meaning "uplands", "treeless mountain tract".
Answer:
Taiga
Explanation:
Tundra is above the tree line. While a few trees that can be found there such as willow or birch, it is known for it's lack of trees and extreme cold.
Taiga has short, wet and warm summers, and long, very cold winters. This biome is also known as Boreal Forest. You will find coniferous forests with evergreen trees such as pine, fir, spruce. An example is the Siberian Forest.
Crossing a BB parent with a bb parent results in
Answer:
All dominant allele children with the genotype Bb
Explanation:
Use a punnet square to see how. It's quite simple when u learn the logistics :)
Hope this Helps!
When the two parental genotypes BB and bb are crossed, the genotype of all [tex]F_1[/tex] plants is Bb.
What is Genotype?An organism's genotype is defined as the complete set of genetic material that can also be used to refer to alleles or variants that occur in a particular gene or genetic locus.
The term "genotype" describes the genetic makeup of an organism as it describes the complete set of genes of an organism. This term can be used to refer to alleles, or variants of genes, carried by an organism.
When two organisms like BB parent crossed with bb parent, the offsprings that will produce is Bb.
Thus, when the two parental genotypes BB and bb are crossed, the genotype of all [tex]F_1[/tex] plants is Bb.
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Which statement best supports the theory that eukaryotic cells evolved
through endosymbiosis?
A. Eukaryotic cells can eat prokaryotic cells by engulfing them with
cell membranes.
B. All prokaryotic cells are covered by a stiff cell wall that protects
them.
C. Their chloroplasts contain DNA that is similar to that of
prokaryotes.
D. Chains of amino acids form inside tiny bubbles filled with organic
molecules.
Answer:
Their chloroplasts contain DNA that is similar to that of
prokaryotes
Explanation:
This is based on the theory that the membrane bound organelles of chloroplast and mitochondria which are peculiar to Eukaryotas evolved from bacteria by endosymbiosis. Thus bacteria contain the DNA of these organism Evidently, these organism (Eukaryotas) must have cohabited with bacteriA some time ago
Which event in Earth's history most directly allowed life to exist on land?
Earth's temperatures increased, causing widespread evaporation.
Earth collided with a large object, forming the moon.
Single-celled organisms released oxygen into the air when they photosynthesized.
Single-celled organisms absorbed harmful gases from the air when they first formed.
Answer:
c; Single-celled organisms released oxygen into the air when they photosynthesized.
Explanation:
Got it right on edge
Answer:
c
Explanation:
The United States government does not allow travelers from foreign countries to bring plants, fruits, vegetables, animals, or other living organisms into this country. State one biological reason for keeping these out of the United States. ?
In affected colonies ________________.
a. There is no queen bee
b. The food stores remain untouched
c. There are dead bees everywhere
d. The comb has disintegrated
2. Colony collapse disorder will only affect the price of honey.
Which of the following are likely to be affected by a magnet?
Answer:
an access card as some may contain metallic properties
Explanation:
electromagnets could also be used in the scanner so this could be tried
hope this helps
How do you know the molecule below is an unsaturated fat?
Η Η Η Η Η Η Η Η Η Η
L 1 1 1 1
|
H-C-C-C=C-C-C-C-C=C-C-C
1
1
HH HH
H
20
OH
A. The molecule contains carbon double bonds.
B. The molecule contains a carbon-oxygen double bond.
C. The molecule has no nitrogen atoms.
D. The molecule has an OH group on the end.
We know the molecule below is an unsaturated fat because the molecule contains carbon double bonds.
What is an unsaturated fat in molecule?An unsaturated fat is a fat or fatty acid in which there is at least one double bond within the fatty acid chain. A fat molecule made of chains where some carbon atoms are not fully saturated with hydrogen atoms.
Unsaturated fat, a fatty acid in which the hydrocarbon molecules have two carbons that share double or triple bond and are therefore not completely saturated with hydrogen atoms. Due to the decreased saturation with hydrogen bonds, the structures are weaker and are, therefore, typically liquid at room temperature.
Unsaturated fats are either monosaturated fats, as in olive or canola oils, or polyunsaturated fats, as in nuts, seeds, and seed oils
The correct answer is option A.
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Temperature, pH, and ionic concentrations each play an important role in the proper functioning of enzymes.
Answer:
fracture the skull
Explanation:
im guessing
Precipitation that flows over the surface of the ground is called groundwater.
True or False
Answer:
true
Explanation:
Answer: true
Explanation:
In meteorology, precipitation is any product of the condensation of atmospheric water vapor that falls under gravity from clouds. The main forms of precipitation include drizzle, rain, sleet, snow, ice pellets, graupel and hail.
which characteristic of life distinguishes a fire and a flowering plant? A. use of energy B. movement C. growth D. defined boundary
Answer:
A. Use of Energy
Explanation:
Which of the following structures would be used to identify a prokaryotic cell? A. mitochondria, Golgi body and lysosomes B. cell wall, flagella and chloroplasts C. cell membrane, ribosomes and a chromosome
Answer:
the is b- cell wall,flagella and chloroplasts
enzymes are macromolecular biological catalysts. enzymes accelerate chemical reactions. almost all metabolic processes in the cell need enzymes in order to occur at rates fast enough to sustain life. without them life on earth would probably not exist. identify two factors that can affect the structure and function of an enzyme and describe what causes the change to occur. course hero.
Answer:
Enzyme is a catalyst
Explanation:
Enzymes make the chemical reaction faster than usual because the activation energy required for a substance to react becomes low with presence of enzymes. if we don't have enzymes it may result to slow metabolic processes. some environmental factor can affect enzymes like over exposed to radiation can activate the enzyme causing it to disrupt. or consuming a mutagenic agents that may affect the enzymes activities.
Why are fossil fuels considered nonrenewable resources?
A. They take millions of years to form.
B. They cannot be used to create electricity.
C. They form quickly due to decaying biomass.
D. They require both sunlight and water to form.
Fossils fuels take millions of years to form which are considered nonrenewable resources. So, the correct option is A.
What are Fossils fuels?A fossil fuel is defined as a hydrocarbon-containing material which forms naturally in the earth's crust from the remains of dead plants and animals that is extracted and burned as fuel where as the main fossil fuels are coal, oil and natural gas.
Fossil energy sources include oil, coal and natural gas, are non-renewable resources that formed when prehistoric plants and animals died and were gradually buried by layers of rock. Fossils fuels take millions of years to form which are considered nonrenewable resources.
So, the correct option is A.
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The picture shows a contractile vacuole of a unicellular freshwater organism. The contractile vacuole regulates the flow of water into and out of the cell in an aquatic environement. What condtions cause the contracile vacuole to fill with water? Your answer: A.The concentration of water is greater outside the cell than inside the cell. B.The concentration of water inside the cell is the same as the concentration outside the cell. C.The temperature of water in the vacuole is higher than the temperature of its environment.
Answer:
A. The concentration of water is greater outside the cell than inside the cell.
Explanation:
This is a question having to do with tonicity, or the concentrations of solutes or solvents across a membrane. In these conditions, there is a hypotonic solution inside the cell (hypo means low, because there's less water inside), which will cause water to come inside.
The contractile vacuole stops the cell from exploding by regulating the amount of water that can come in. Otherwise, it would lyse, or split open.
Climate change causes extreme weather conditions
such as:
A. Flooding
B. Heat waves
C. Hurricanes
D. All of the above
Answer:
D. All of the above
Explanation:
Answer:
The answer is all of above I think
The soil in a flower pot, the amount of water added to the pot, the amount of
sunlight received by the plant, the amount and type of fertilizer given, and the
temperature of the air surrounding the pot all make up the plant's
a. ecosystems
b. habitat
c. abiotic factors
d. biotic factors
Abiotic factors are non-living components of an ecosystem that influence their surroundings. Examples may be light, water, and temperature in a terrestrial habitat, hence option C is correct.
What are abiotic factors?Abiotic variables are non-living elements that have an impact on the survival, development, and existence of living things, including plants.
We may concentrate on the water as one of these abiotic elements even though there are many others that are equally significant and have a part to play.
Water is one of, if not the most, critical abiotic factors since it is essential for plant existence. Depending on how severe the absence of water is, it will be a limiting factor for a plant's growth or even life.
Therefore, abiotic factors are non-living components of an ecosystem that influence their surroundings, hence option C is correct.
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Phosphorus is difficult for plants and animals to access in nature because____
Answer:
If soils are too acidic, phosphorus reacts with iron and aluminum. That makes it unavailable to plants. But if soils are too alkaline, phosphorus reacts with calcium and also becomes inaccessible.
Explanation:
Using Escherichia coli and Entamoeba coli as examples, explain why the genus name must always be written out for the first use.
Answer:
First is always the name of the species, and second is the name of the genus or of the microbiological family group in which the microorganism is found, the name of the species always goes forward since in this way we can identify some characteristics and characteristics of the microorganisms
Explanation:
Example, in this case both microorganisms are part of the "Coli" family but the entomoeba is an AMEBA and the escherichia is an ENTEROBACTERIA, therefore already in its name it indicates a great difference between the two despite being in the same genus microbiological
When used together, perspective and color variation create what effect for the
viewer?
A. A psychological reaction
B. The illusion of depth on a flat surface
C. The illusion that a three-dimensional object is flat
D. Temporary blindness
Which option describes cations?
Answer:
D
Explanation:
A cation is a positively charge ion, such as a sodium ion, as when it becomes an ion, it gives away electrons, becoming positively charged.
The opposite is an anion, which is a negatively charged ion, such as oxygen as it receives elections from the cation when forming an ionic bond.
Cations are the positively charged ions.
What are cations?A cation has more protons than electrons, consequently giving it a net positive charge. For a cation to form, one or more electrons must be lost, typically pulled away by atoms with a stronger affinity for them.
The number of electrons lost, and so the charge of the ion, is indicated after the chemical symbol, e.g. silver (Ag) loses one electron to become Ag+, whilst zinc (Zn) loses two electrons to become Zn2+.
In contrast, most nonmetallic atoms have a stronger attraction to electrons than do metallic atoms, and as a result, they gain electrons to form anions.
Therefore, Cations are the positively charged ions.
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Which kind of organic molecules did Miller and Urey create in their
experiment?
A. Glucose
B. Nucleotides
C. ATP
D. DNA
Answer:
D
Explanation:
.Specific processes must take place within the cell for protein synthesis to occur. The processes that take place within a cell for protein synthesis to occur. Which occurs during translation but not during transcription? A DNA template is used to create an mRNA strand. A tRNA template is used to create a DNA strand. A tRNA template is used to create an mRNA strand. An mRNA template is used to create an amino acid chain.
Answer:
An mRNA template is used to create an amino acid chain.
Explanation:
Transcription is the first step in the protein synthesis process. Translation is the second.
Overall, the central dogma of biology is DNA->RNA->protein.
Transcription is that first step, DNA to RNA, and translation is RNA to protein: think of it like nucleic acids can just be transcribed, but nucleic acid to protein is like a whole different language, so it has to be translated. So the correct answer here is that mRNA is used to make amino acid chain (aka protein), which happens only in translation.
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Abyssal zones and coral reefs are two different types of ecological systems in the ocean. They vary in terms of their physical characteristics as well as in terms of the types and amounts of life they support.
Compare the geographic features of abyssal zones and coral reefs. What is it about coral reefs that allows them to support very diverse life forms and very large quantities of life? What is it about abyssal zones that allows them to support very diverse life forms but very small quantities of life? Explain the differences in the diversity and amount of life supported by abyssal zones and coral reefs with reference to their physical characteristics
Since pesticides run off from
several farms and fields can make its
way to are waterways such as rivers,
lakes, and oceans, what type of pollutant
are they considered to be?
A clean water act
B wastewater
C point source
D non-point source
Alleles are:
A)different genes
B)building blocks of DNA
C)proteins
D)alternate forms of a gene
Answer:
Alternate form of gene
Explanation:
An allele is a variant form of a gene. Some genes have a variety of different forms, which are located at the same position, or genetic locus, on a chromosome. Humans are called diploid organisms because they have two alleles at each genetic locus, with one allele inherited from each parent.
Answer:
its D Alternate form of gene
What property of water allows fish and other animals to swim below the
frozen surface of lakes and rivers during the winter?
A. Solid water is denser than liquid water.
B. Solid water is less dense than liquid water.
C. Solid water is warmer than liquid water.
D. Solid water is colder than liquid water.
In ancient times, plant and animal remains got buried, compressed, and transformed into fossil fuels like coal. Burning these fossil fuels today will affect which biogeochemical cycle?
3. How is primary and secondary succession the same?
identify the kinds of support John will need through this chronic illness he is facing in his life?
Answer:
What chronic illness are you talking about?
Explanation:
I investigated sexual and asexual reproduction as well as the processes of cellular division by mitosis and meiosis Hypothesis: Record your predictions
Answer:
what are we predicting, the type of division or what the outcome will be