Answer:
Dr. Beadle was one of the first scientists to experiment with crossbreading, and this signifies early advancements in science.
Explanation:
Which of the following statements about mixtures is FALSE?
SELECT ALL THAT APPLY
a
they are all mixed uniformly and have an even
composition throughout
b mixtures can be separated using physical
properties
С
Substances must combine in specific proportions
d the components keep their physical properties
The false statements from the option regarding mixtures are ; ( A and C )
They are all mixed uniformly and have an even composition throughout Substances must combine in specific proportions ( C )Mixtures are made by the physical combination of substances at varying or at the same proportions. mixtures made up of similar proportion of substances are termed homogenous mixtures, while the varying proportions in substances contained in a mixture leads to a heterogenous mixture.
Mixtures do not bond chemically therefore they retain their physical properties and can be separated based on their physical properties. also some mixtures are not mixed up uniformly ( heterogenous mixtures ).
Hence we can conclude that the false statements regarding mixtures are ;They are all mixed uniformly and have an even composition throughout and Substances must combine in specific proportions.
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Why is a NATURAL RESOURCE called a natural resource?
Answer:because it comes from the earth. without any changes. all natural
Explanation:
Answer:
Because they are materials made from earth naturally that are made to help people
Explanation:
Why do you think it is advantageous for cells to go through the different
phases of the cell cycle (such as copying their genes or building the
materials needed for division) in an ordered way? What might happen if a
cell underwent all of these activities at once?
Answer:
it is advantageous because all cells will go through the same process and divide correctly, they won't grow out of proportion. If they went through all these activities at once, there would be a higher chance of losing the cell.
Explanation:
If a cell underwent all of these activities at once, there will be a risk of damaging the cell.
What do you mean by a Cell?A cell may be defined as the smallest unit that can live on its own and that makes up all living organisms and the tissues of the body.
A cell always goes through the different phases of the cell cycle in an ordered way. This is because a cell must have to divide and differentiate properly. But if a cell underwent all of the activities of the cell cycle at once, it is very tough for the cell to perform which activity at first, in this way cell loses its structure, and its identity and is finally damaged.
Therefore, if a cell underwent all of these activities at once, there will be a risk of damaging the cell.
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Type A blood and Type B blood are dominant to type O blood, but the condominant to one another. What would the blood type of a person who inherited a B allele one parent, and an O allele from the other be?
did you get the answer yet
Can someone help me on this question please for brainliest.
2.
Which statement accurately describes an adult snow leopard? (Select all that apply.)
They can convert energy from the sun into nutrients.
They are predators.
They generally live in large groups.
They can climb up and down very steep slopes.
pls awnser
What epidermolysis bullosa can cause to the tissue?
Answer:
Epidermolysis bullosa (EB) is a group of connective tissue disorders that causes skin to be fragile and blister and tear easily. Blisters and sores occur when clothing rubs on skin or when the skin is bumped. Mild cases of the disease usually cause painful blisters on the hands, elbows, knees, and feet.
Explanation:
#Hope this helps
what was the role of plant breeding in green revolution?
Answer:
plant breeding played a crucial role during the green revolution
Explanation:
Plant breeding can be defined as the methodologies used to improve plant phenotypic traits. The methodologies for plant breeding include, among others, making crosses, setting breeding objectives, genetic engineering techniques, selection of progeny, etc. Moreover, the Green Revolution is a period occurring between 1950 and 1960 in which high-yield varieties were developed, specifically in rice and wheat. During this period, high yielding semi-dwarf varieties of rice and wheat arising from the cross between dwarf plants and normal varieties were developed. These high yield crops were resistant to lodging. The combination of these new varieties, fertilizers and new techniques of harvesting drastically improved crop yields, thus reducing hunger in Third World countries.
when energy is coverted to another form of energy, a
Answer:
energy conversion or energy transformation would be the answer
Explanation:
ecosystem is the ecosystem of a stream or river.
While studying ecosystems, students learn that a(n)
A) river
B ocean
C) aquatic
D) tundra
E) lotic
Answer:its a ijdjd
Explanation:
Answer:D>:)
Explanation:BRAINLIEST .
The characteristics of organisms never change.
Question 1 options:
True
False
Answer:
F
Explanation:
They always change when something bad happens to your body
The characteristics of an organism changes over time in order to evolve and adapt as a result of evolution. Therefore, it false.
What are the 7 characteristics of all living organisms?Populations undergo changes throughout evolution, and the organisms inside them become better at responding, metabolising, and reproducing. They acquire coping mechanisms for their surroundings that their forebears lacked. Additionally, evolution produces a wider range of creatures than did so in earlier times.
Environmental reactions, cells, change and development, reproduction, possessing complicated chemistry, homeostasis and energy processing are the seven traits that define a living being. Non-living creatures may sometimes exhibit some of the aforementioned traits, but only live organisms exhibit all of them.
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What is deposition an volume
Answer:
Explanation: A deposition is a statement made in court. A deposition can be made outside of court, too after a crime, a witness might give a deposition. And in the sense of depose, a deposition can refer to getting rid of a person of authority. The deposition of a king is the same thing as a dethronement.
What kind of behavior is demonstrated when a cat teaches its kitten how to stalk a fly?
a.
parenting
c.
hibernation
b.
courtship
d.
reproducing
what is the function of this structure?
Answer:
What?
Explanation:
I don't understand the question.
Which structure are you talking about??
Explain how to read or use this dichotomous key to name the organism.
Which is not true of the Intertropical Convergence Zone (also known as the doldrums)?
The process of primary succession can take hundreds of years.
True
False
Answer:
False
Explanation:
The process of primary succession can take hundreds, if not thousands, of years. In contrast, the process of secondary succession can reestablish an ecosystem's climax communities in as few as 50 years. The ecosystem's animal populations are also established more quickly during secondary succession.
Hope this helps!
Brain-List?
Answer: The correct answer is TRUE
Explanation: Primary succession takes hundreds to thousands of years, and secondary succession is much shorter.
7. Which type of tectonic plate movement results in
the formation of mid ocean ridges? (8.9B, L2)
A. sliding past each other
B. pushing together and upwards
C. pulling away from each other
D. one plate sliding under another
which of the following materials are being transported in and out of the cell through its cell membrane
A: dna and mitochondra
b: energy and water
c: waster and nutrients
PLEASE HELP FAST
Answer:
B
Explanation:
Because its the circle of life
Waste and nutrients are the materials are being transported in and out of the cell through its cell membrane. Thus, the correct option is C.
What is membrane transport?Membrane transport is the collection of mechanisms which regulate the passage of solutes such as the ions and small molecules through biological membranes such as plasma membrane, which are lipid bilayers that contain protein units embedded in them.
The regulation of transport passage through the membrane is due to the selective membrane permeability, which is a characteristic of the biological membranes that allows them to separate substances of distinct chemical nature to transport through them. Cell waste and nutrient are two such materials which are being transported in and out of the cell through its cell membrane.
Therefore, the correct option is C.
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i measured the temperature today
is this an observation or inference ?
Answer:
observation
Explanation:
Answer:
This is an observation
Explanation:
An inference is an educated guess. As you used a measurement tool, you observed the temperature today. Observations are data.
what stem cell first develops in blastocyst
Answer: Embryonic Stem Cell
Answer:
Embryonic
Explanation:
me and web
7 th grade helpppppp
Mendel wanted to find out if the pattern of the inheritance for one trait affected the pattern of inheritance for another what experiment did he perform to test this idea
Answer:
This question lacks options, the options are:
A. He tested non-dominant traits.
B. He performed dihybrid crosses.
C. He made an F3 generation.
D. He tested one trait at a time.
The answer is B
Explanation:
Gregor Mendel, who is referred to as the FATHER of GENETICS, discovered the principles that governs inheritance till date. In one of his principles which he called LAW OF INDEPENDENT ASSORTMENT, he stated that the separation of one allele of a gene into gametes does not influence the separation of the allele of another gene i.e alleles of genes segregate independently of one another.
In order to test this principle, Mendel performed a DIHYBRID CROSS, which is a cross where the inheritance of two different traits encoded by two different genes are simultaneously studied. For example, he studied the gene for seed shape (round or wrinkled) and seed color (yellow or green) in pea plants. By performing this DIHYBRID CROSS, he was able to test his idea that pattern of the inheritance for one trait (seed shape) did not affect the pattern of inheritance for another (seed color).
The image shows the concentration of a solute on both sides of a semi-permeable membrane. What do you predict concentrations will be at 15 seconds? (Homeostasis Gizmos)
Answer:
According to the image it can be predicted that the concentration of a solute on both sides of a semi-permeable membrane at 15 seconds will be equal on both sides (60/60), since the equilibrium reached at 10 seconds is maintained.
Explanation:
When a solute exists in different concentrations on both sides of a semipermeable membrane, the solute will be pushed from the place of higher concentration to the place of lower concentration, following a concentration gradient. Particle movement in this case will stop when equilibrium has been reached, i.e. when the solute has the same concentration on both sides of the membrane.
What the image shows is a solute that was on both sides of the semipermeable membrane at different concentrations. In the second 10 the concentrations on both sides were already equal, equilibrium had been reached and the concentration gradient disappears. At 15 seconds the concentrations should remain the same, since equilibrium has been maintained.
The semi-permeable membrane is a type of membrane which allows only to pass solute molecules. The flow of water from a high concentration to a low concentration is called osmosis.
According to the image, we can predict that the concentration of a solute on both sides of a semi-permeable membrane at 15 seconds will be equal on both sides (60/60) since the equilibrium reached at 10 seconds is maintained.
This condition is stated as an isotonic solution.
When a solute exists in different concentrations on both sides of a semipermeable membrane.
The solute will be pushed from the place of higher concentration to the place of lower concentration, following a concentration gradient.
Particle movement in this case will stop when equilibrium has been reached, i.e. when the solute has the same concentration on both sides of the membrane.
In the second 10, the concentrations on both sides were already equal, equilibrium had been reached and the concentration gradient disappears.
At 15 seconds the concentrations should remain the same since equilibrium has been maintained.
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10. In the human body, each hormone is regulated by certain genes. These genes are turned
on at times and turned off at other times. Which best explains this process?
F. Genes are regulated by hormones secreted by the endocrine system.
7
G. The regulation of genes is directly controlled by the nervous system.
H. Genes are directly regulated by hormones found in the integumentary system.
J. The regulation of genes is only affected by external factors.
Answer:
B
Explanation:
It helps
Answer:
Option B The regulation of genes is directly controlled by the nervous system.
Explanation:
The process of turning of and turning on of genes is called Gene Regulation.Gene Regulation is an important process as it controls various mechanisms of human bodily functions through Gene Expression by turning of and on the genes at required times which in turn breaks and synthesizes necessary proteins for regulation of different functions.Since, the nervous system is responsible for regulating gene expression, therefore, gene regulation is also controlled by the nervous system.For more information:
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The fictional species Crabious shinious with silver shell (SS) is crossed with
the Crabious shinious with gold and silver shell (GS). Complete a Punnet
Square to show the offspring of these two crabs. What would the genotypic
and phenotypic ratios be?
O 1 SS: 2 GS: 1 GG; 1 silver shell: 2 gold and silver shell: 1 gold shell
2 GS: 2 SS; 2 gold and silver shell:2 silver shell
O 4 GS; 4 gold and silver shell
O 1 GS: 3 SS; 1 gold and silver shell: 3 silver shell
Use the following words correctly in a sentence: nucleus, chromosome, gene, DNA.
Answer:
A nucleus is the membrane-bound organelle, and it has the chromosomes, and genes are made up from DNA.
Explanation:
How do individual cell parts contribute to a cell's division?
Answer:
Centrioles are organelles involved in cell division. The function of centrioles is to help organize the chromosomes before cell division occurs so that each daughter cell has the correct number of chromosomes after the cell divides. Centrioles are found only in animal cells, and are located near the nucleus.
Explanation:
hope this helps <3
Classify the silkmoth
Answer:
Bombyx mori, the domestic silk moth, is an insect from the moth family Bombycidae. It is the closest relative of Bombyx mandarina, the wild silk moth. The silkworm is the larva or caterpillar of a silk moth.
Explanation:
Silkworm, common name for the silk-producing larvae of any of several species of moths. Silkworms possess a pair of specially modified salivary glands called silk glands, or sericteries, which are used in the production of cocoons. The silk glands secrete a clear, viscous fluid that is forced through openings, called spinnerets, on the mouthparts of the larva; the fluid hardens as it comes into contact with air. The diameter of the spinneret determines the thickness of the silk thread produced.
The best-known silkworm is the larvae of the common, domesticated silkworm moth. This moth, native to China, was introduced into Europe and western Asia in the 6th century AD and into North America in the 18th century. The moth has been cultivated for many centuries and is no longer known in the wild state. Breeders have produced many varieties of the moth, the most important of which produce three broods of young annually.
A typical adult silkworm moth is yellow or yellowish-white, with a thick, hairy body, and has a wingspread of about 3.8 cm (about 1.5 in). The adult has rudimentary mouthparts and does not eat during the short period of its mature existence; the female dies almost immediately after depositing the eggs, and the male lives only a short time thereafter. The female deposits 300 to 400 bluish eggs at a time; the eggs are fastened to a flat surface by a gummy substance secreted by the female. The larvae, which hatch in about ten days, are about 0.6 cm (about 0.25 in) long. The larvae feed on leaves of white mulberry, Osage orange, or lettuce. Silkworm caterpillars that are fed mulberry leaves produce the finest quality silk. Mature larvae are about 7.5 cm (about 3 in) long and yellowish-gray or dark gray in color.
About six weeks after hatching, the common silkworm stops eating and spins its cocoon. The length of the individual fiber composing the cocoon varies from 300 to 900 m (1000 to 3000 ft). The silkworm pupates for about two weeks; if allowed to complete its pupation period, it emerges as an adult moth. Tearing during emergence damages the silken cocoon beyond commercial use. Therefore, in the commercial production of silk, only enough adult moths are allowed to emerge to ensure continuation of the species. Most of the silkworms are killed by heat, either by immersion in boiling water or by drying in ovens.
Other moths known as silkworm moths include the giant silkworm moths. The larvae of these large moths also spin silken cocoons, but they are less widely used for commercial silk production.
Scientific classification: Silkworms belong to the order Lepidoptera. The domesticated silkworm moth makes up the family Bombycidae and is classified as Bombyx mori. The giant silkworm moths make up the family Saturniidae.
The concentration of hydrogen ions is greater inside the thylakoid space than outside. Which reaction releases
hydrogen ions inside the thylakoid?
A photon strikes the antenna pigments of photosystem II to initiate photosynthesis. The energy travels to the reaction center that contains chlorophyll a to the electron transport chain, which pumps hydrogen ions into the thylakoid interior (the lumen).
What is thylakoid?This action builds up a high concentration of hydrogen ions. Chloroplasts and cyanobacteria contain membrane-bound compartments called thylakoids. They serve as the location of the photosynthetic reactions that depend on light. A thylakoid membrane surrounds a thylakoid lumen in thylakoids.
Grana, which are often composed of stacks of disks formed by chloroplast thylakoids (singular: granum). Intergranal/stromal thylakoids, which connect granum stacks as one functional compartment, connect grana.
Chlorophyll pigments are present in bundles called quantasomes in thylakoid membranes. Between 230 and 250 chlorophyll molecules make up each quantasome.
Therefore, A photon strikes the antenna pigments of photosystem II to initiate photosynthesis. The energy travels to the reaction center that contains chlorophyll a to the electron transport chain, which pumps hydrogen ions into the thylakoid interior (the lumen).
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