Answer:
1
Explanation:
Write a balanced chemical equation for the reaction of sodium hydroxide solution With solid oxalic acid dihydrate. 2. Calculate the volume of 6M NaOH solution needed to prepare 0.5 L of 0.1M solution by dilution. 3. Calculate the molar mass of oxalic acid dihydrate (H2C2O4.2H2O). 4. Calculate the mass of oxalic acid dihydrate that would neutralize 30. mL of 0.10 M NaOH solution. 5. Name the primary standard used to standardize your base solution.
Which compound refer to those that are produced by plants or animals?
Natural compounds
Synthetic compounds
Biotechnology
None of the above
natural compounds I mean all organic compounds
Explanation:
many organic compounds are obtained directly from the plants and animal sources by suitable method of installation a few filling here example are carbohydrate cellulose sugar and starches for prediction of hunters of useful organic substances such as solved synthetic rubber explosive and plastic
Sometimes when organisms evolve, it gives rise to multiple species that can coexist simultaneously. Give an example supporting this statement.
need answer asap
The finches may have speciated from the Galápagos finch and now occupy different habitats.
What is speciation?
The term speciation has to do with a type of evolution that gives rise to new organisms from existing ones. It is common in the world today. These ne organisms all tend to coexist with each but may not be on the same habitat.
For instance, the finches may have speciated from the Galápagos finch and now occupy different habitats.
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Black coat color is dominant over white coat color in guinea pigs. in addition to coat color, rough coat is dominant over smooth coat.
b. Demonstrate a cross between a heterozygous black/homozygous smooth and homozygous white/heterozygous rough. describe the phenotypes as fractions?
Answer:
Explanation:
C = dominant black coat
c = recessive white coat
T = dominant rough coat
t = recessive smooth coat
Heterozygous black coat + Homozygous smooth guinea pig genotype:
Cc tt
homozygous white/heterozygous rough:
cc Tt
Punnett Square
After looking at Punnett squares attached, we can see that 1/2 of offspring are either black or white and 1/2 of offspring are either rough or smooth.
Cc - black coat - 2/4 - 1/2
cc - white coat - 2/4 - 1/2
Tt - rough coat - 2/4 - 1/2
tt - smooth coat - 2/4 - 1/2
How does sucrose move from source to sieve?
The sucrose move in source to sieve by active transport.
What is active transport?Active transport is a type of transport in which the cell expends energy to move solutes against their concentration gradients. The sodium-potassium pump is an example of active transport. Active transport differs from passive transport in that the cell does not expend energy.
In this case, the sucrose moves from companion cells into source to sieve elements by active transport. This reduces the water potential of the source to sieve element by osmosis, which increases the hydrostatic pressure.
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Haploid and diploid are terms that represent the ______ of an organism.
Haploid and diploid are terms that represent the sets of the chromosome of an organism.
What do you mean by chromosomes?The thread-like components known as chromosomes are found in the nucleus of both animal and plant cells. Protein and a single molecule of deoxyribonucleic acid make up each chromosome (DNA).
When an organism's cells only have one set of chromosomes, the organism is said to be a haploid. All organisms that reproduce sexually are diploid (having two sets of chromosomes, one from each parent). Only the egg and sperm cells in humans are haploid.
The number of chromosomes found inside a cell's nucleus is known as the diploid chromosomal number. The symbol for this number is 2n. Each organism has a different one. In contrast to sex cells, somatic cells are diploid.
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explain the roles of mRNA and tRNA
Which scientists atomic model is more recent
The more recent atomic model is known as the “electron cloud” model.
What is the “electron cloud” model?The “electron cloud” model is a theory used in physics to explain the position and relative arrangement of atomic elements.
According to this model (electron cloud), negatively charged electrons for clods around atomic nucleus.
In conclusion, The more recent atomic model is known as the “electron cloud” model.
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High population densities in urban areas have advantages and disadvantages. List as many of each as you can and defend your conclusion. How could the disadvantages be eliminated or reduced? Use evidence to support your conclusion.
Advantages :- More human population so more workers in different fields,More economy growth,More tax payers, More funds, More diversity ,More share of people for particular programs.
Disadvantages ;- Burden on economy, More exploitation of natural resources, pollution, deforestation, More use of water resources, more competition for survival :) hope this helps thanks
reviewing Meiosis:
1. Draw a diagram depicting the process if crossing over.
Answer:
I attached a diagram I found online. This one is a bit more general. If you want me to include the PMAT part of meiosis, then just ask.
Savannah wraps some gifts and then brings them to the post office where they are delivered to people in different parts of the country. Which organelle is Savannah most like?
Answer: The Golgi body
Explanation: it is most known to label and send packages
Which of these is a negative form of a plant tropism?
Answer:
Gravitropism is a common example which can be used to describe negative tropism.
Gravitropism is an example.
When a plant grows upwards and is defying gravity.
Therefore, it is negative gravitropism.
What happens during a claustrophobic attack?
It can trigger symptoms of anxiety ranging from mild sweating or trembling to fainting or a panic attack.
It can trigger symptoms of anxiety ranging from mild sweating or trembling to fainting or a panic attack.Common claustrophobia triggers include small rooms, elevators, closets, MRI scanners, airplanes, and other small or tight spaces.
What observation led Darwin to believe that the A. Demarlii is
terrestrial?
O They slowly crawl along the ground.
O They are found only in the center of the island.
O They have yellow-orange bellies.
O They weigh between ten and fifteen pounds.
Answer:
Explanation:
hi!
I think it is A
terrestial animals are animals that live on land ...it could be B but terrestrial animals are not only found on islands and A days they crawl in the GROUND
if you ask me I think it is tricky question on its own
hope it helps
Answer:
It is they are only found in the center of the island
Explanation:
Which membranous structures conduct impulses through the sarcoplasm to stimulate the release of calcium?.
Answer:T-tubules
Explanation
The action potential invades T-tubules and causes the L-type calcium channels to open, which in turn causes ryanodine receptors (RyRs) in the SR to open and release calcium, which stimulates contraction.
All cells have ribosomes.
However, some cells have more
ribosomes than others.
the
Which cells have the MOST
ribosomes?
A. Cells that produce proteins.
B. Cells that produce energy.
C. Cells that are involved in reproduction.
Answer:
B
Explanation:
Ribosomes main purpose is to make proteins from the process called translation. This is the second step in the process.
A culture of living cells includes a solution called a
Answer:
C) medium
Explanation:
medium can be solid, semi-solid or liquid
mediums are designed to grow living cells of plants, animals, humans and microbes
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Explain why genetic diversity is a good principle for secure development. Cite an example of lack of diversity that has had or can have a negative impact on security.
Answer:
Genetic diversity is a good principle for secure development because it is critical for a population to adapt to changing environments. It helps maintain the health of a population.
Explanation:
Genetic Diversity refers to the range of different inherited traits within a species. In a species with high genetic diversity, there would be many individuals with a wide variety of different traits.
Mutations are important to genetic diversity because it creates a new DNA sequence for a particular gene, creating a new allele. This is important because including alleles that are diverse may be valuable in resisting diseases, pests, and other stresses
Genetic diversity is a good principle for secure development because it ensures the chances of adaptation in living organisms with respect to changing environmental conditions.
What is Genetic diversity?Genetic diversity may be defined as the total number of genetic characteristics in the genetic makeup of a species. It serves as a way for populations to adapt to changing environments. It facilitates the survival of particular species.
A lack of diversity may have a negative impact on security. This can be understood by the example that if there were not many variables seen in the Darwin finches in the Galapagos islands, more birds feel the scarcity of food and due to this, they have died and become extinct from nature.
Therefore, with more genetic variation, it is more likely that some individuals in a population will possess variations of alleles that are suited for the environment.
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Grouping of objects help the shopkeeper, justify the statement.
Dihybrid crosses In humans, rolling tongue is dominant over non-rolling and curved thumbs are dominant over straight thumbs. do a cross between: heterozygous roller/heterozygous curved and homozygous non-roller/homozygous straight. describe the phenotypes as fractions?
Answer:
Heterozygous roller/heterozygous curved, heterozygous roller/homozygous straight, homozygous non-roller/heterozygous curved, homozygous non-roller/homozygous straight
Explanation:
What are the defining characteristics of amphibians?
Amphibians represent a group of vertebrates that require water to survive.
AmphibiansThey are one of the major divisions of vertebrates along with fishes, birds, and mammals.
In addition to possessing the basic features of vertebrates, amphibians have the following characteristics:
They are cold-bloodedThey can breathe through their skin as well as using lungsThey need water for survivalReproduction is by laying eggs that are fertilized externallyThey are mostly carnivorousMore on amphibians can be found here: https://brainly.com/question/13744586
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a woman going through menopause may take ________ to minimize the symptoms.
A woman going through menopause may take estrogen as part of hormone replacement therapy.
What is menopause?Menopause is the period in a woman's life in which she stops menstruation. This is because the woman's ovaries stops producing eggs and the level of the hormone estrogen is reduced.
To minimizethe symptoms associated with onset of menopause, a woman going through menopause may take estrogen as part of hormone replacement therapy.
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If the population of poison dart frogs in this rain forest community were to disappear, which of these populations would be most likely to increase?
A: Fruit bat
B: Sloth
C: Beetle
D: Strangler fig
Answer:
c
Explanation:
the beetles fall prey to the poison dart from so if they went extinct they wouldn't be a threat to the beetles population
the enzyme pgh synthase contains two different functionalities, a __________ that uses two molecules of oxygen as substrates and __________ which performs a 2 electron reduction.
The enzyme PGH synthase contains two different functionalities, a cyclooxygenase that uses two molecules of oxygen as substrates and peroxidase.
What is PGH synthase?Prostaglandin-endop_eroxide synthase 2 (PGH) is an enzyme that has catalytic activity as peroxidase.
A peroxidase enzyme is a catalyst that converts peroxide which is very reactive to oxygen and water.
In conclusion, the enzyme PGH synthase contains two different functionalities, a cyclooxygenase that uses two molecules of oxygen as substrates and peroxidase.
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The area around the Sahara Desert is slowly changing into a dry region, similar to the desert. Which trait is most likely to be selected in the population of plants growing in this region?
A.
trait encoding for short plant structure to reduce transport of water
B.
trait encoding for thick bark on trees
C.
trait encoding for increased leaf size to increase photosynthesis
D.
trait encoding for fruit
The trait that is most likely to be selected in the population of plants growing in this region is trait encoding for short plant structure to reduce transport of water.
How are desert plants adapted?Adaptation is any change that is made or undergone to suit a condition or environment.
Desert plants are adapted to the dry condition of the area by the possession of several traits.
According to this question, the area around the Sahara Desert is slowly changing into a dry region, similar to the desert.
This suggests that the trait that is most likely to be selected in the population of plants growing in this region is trait encoding for short plant structure to reduce transport of water.
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Answer:trait encoding for short plant structure to reduce transport of water
Explanation:The Sahara Desert is a zone which receives very low or no precipitation. This region receives maximum of sunlight not received by any other biome. The soil is typically sand which is highly porous and lacks essential growth nutrients necessary for plant growth. The plants grown around Sahara Desert are xerophytic plants. These plants undergoes several adaptations in order to prevent loss of water through transpiration. Trait encoding for short plant structure to reduce transport of water is a xerophytic adaptation.
Which of the following correctly describes the relationship between thermal energy and
temperature?
Select one:
O a. Temperature is a measure of thermal energy
O b. Temperature and thermal energy are the same thing
Both conductors and insulators transfer thermal energy, but not electrical energy.
One of them does not transfer energy.
O d. Both conductors and insulators transfer electrical energy, but not thermal energy.
Which of the following is considered a sustainable use of a common?
Fishing regulation
Grazing on public land
Plastics in oceans
Water pollution
Answer:
Explanation:
air polution
Heat is transferred to two different solids, A and B, at the same rate. Both A and B are initially at the same temperature. The mass of A is 4-times that of B, while the specific heat capacity of B is twice that of A. After 5 minutes of heating, which of the following statements is correct?
a) The temperature of B is twice that of A
b) The two are at the same temperature
c) The change in the temperature of A is half that of B
d) The change in the temperature of A is 4-times that of B
The two solids are at the same temperature
Question 11 of 30
Which of the following factors affecting population growth is density
independent?
Answer:Density-independent limiting factors affect all populations the same, regardless of population size. Density-dependent limiting factors include disease, parasites, competition for food, water, and shelter, and predation. Density-independent limiting factors include natural disasters, climate, and human activity.
Explanation:
Which event takes place during normal fertilization?
The event which takes place during normal fertilization is zygote formation.
Which event takes place during fertilization?The major event which is characteristic of fertilization is zygote, otherwise termed cell formation in which case, the zygote is capable of undergoing cell division to form a new living cell. The fusion of two gametes necessary for fertilization kick-starts several reactions in the egg.
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How do living organisms help the soil
Living organisms such as bacteria, fungi, algae are very important in the soil, they perform several functions, some of which include the following;
- Living organisms help break down dead plant parts, this helps to add more nutrients to the soil
- Living organisms dig up holes in the soil, this helps to maintain aeration in the soil.
- Living organisms play a major role on the production of humus
- Living organisms help to break large particles of rock
- Living organisms such as Rhizobium bacteria help in the fixing of nitrogen
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Living organisms help the soil in the following ways:
Return nutrients to the soil
Make the soil aerated and porous
How do living organisms help the soil?
Living organisms are found inhabiting the soil and in turn confer various benefits on the soil.
These benefits help the soil and make it more suitable for agricultural practices.
Living organisms such as earthworms make the soil porous for aeration when they burrow into the soil.
Microorganisms also degrade organic compounds and release the nutrients into the soil.
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