Answer:
true
i think not sure
Explanation:
Answer:
true!
Explanation:
Everything in the Universe is in motion because forces exist in the Universe. The gravitational force and the electromagnetic force ensure large objects are in motion while the weak and strong nuclear forces ensure the quantum world is constantly in motion. If there were no forces, there would be no motion.
Starch molecules are too large to pass through the
tubing into the beaker. Which errors could have
caused starch to appear in the beaker despite this
fact? Check all possible errors.
not washing the outside of the tubing after
filling it with starch
reusing droppers for different solutions
adding glucose to the solution in the dialysis
tubing
using a beaker that had not been cleaned
thoroughly
DONE
Answer:
1,2,4
Explanation:
The possible sources of error include: not cleaning the beakers properly, reusing droppers for different solutions, and not cleaning the outside tubing after filling with starch.
What are semi-permeable membranes?Semi-permeable membranes are materials which are selectively permeable to some substances but not others.
Starch molecules are large and do not pass through semi-permeable membranes.
The source of errors could be due to:
not washing the outside of the tubing after filling it with starchreusing droppers for different solutionsusing a beaker that had not been cleanedthoroughlyTherefore, Semi-permeable membranes are selectively permeable to some substances such as one but not larger molecules such as starch.
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Archaea can be found in which of the following places?
A. Inside your body
B. Hot Springs
C. Yogurt
Answer:
b. hot springs
Explanation:
Archaea bacteria are extremophiles living in harsh environments, such as hot springs and salt lakes, since they have been found in a broad range of habitats, including soils, oceans, marshlands and the human colon so they are ubiquitous.
A diatom has a cell wall made of _____. silica calcium chitin cellulose
Answer:
Silica
Explanation:
A unique feature of diatom anatomy is that they are surrounded by a cell wall made of silica (hydrated silicon dioxide), called a frustule
Hope this helps!
Answer:
A diatom has a cell wall made of silica.
Explanation:
Diatoms are eukaryotic phytoplankton cells known for their silica-containing cell walls (frustales), and are responsible for approximately 20% of total primary productivity globally. Diatom silica is a form of biogenic opal, containing oxygen isotopes and can be used in lacustrine and marine paleoenvironmental studies.
What is an autonomous vehicle?
An autonomous car is a vehicle capable of sensing its environment and operating without human involvement. A human passenger is not required to take control of the vehicle at any time, nor is a human passenger required to be present in the vehicle at all. An autonomous car can go anywhere a traditional car goes and do everything that an experienced human driver does.
Which of the following causes the change in seasons on Earth?
A. the Earth revolving around the Sun, and the moon revolving around the Earth
B.the spinning of the Earth on its axis, and the Earth revolving around the Sun
C.the tilting of the Earth on its axis, and the sun revolving around the Earth
D.the tilting of the Earth on its axis, and the Earth revolving around the Sun
Answer:
D.the tilting of the Earth on its axis, and the Earth revolving around the Sun
Explanation:
The tilting of the Earth on its axis, and the Earth revolving around the Sun.
What is Changes of Earth?One of those natural occurrences that people take for granted is the change of seasons. People are aware that it occurs in most regions, but they don't always pause to consider the causes of the seasons.
The tilt of the Earth's axis with respect to its orbital plane is the primary cause of the seasons. Consider the solar system's orbital plane as a flat plate. On the "surface" of the plate, the majority of planets revolve around the Sun.
Most planets have their poles at an angle, rather than having their north and south poles point directly perpendicular to the plate.
Therefore, The tilting of the Earth on its axis, and the Earth revolving around the Sun.
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14. Albinism (represented by letter Aer a) is a recessive autosomal (not sex-
linked!) genetic disorder that causes the complete or partial absence of
pigments in the skin, hair, and eyes. Fill in the Punnett square to determine the
expected offspring in a cross between homozygous recessive and heterozygous
parents.
14 a. What is the genotype of the homozygous recessive parent?
14b. What is the genotype of the heterozygous parent?
14.Sc. What is the phenotype (albino or normal) of the homozygous recessive parent?
14.d. What is the phenotype of the heterozygous parent?
14.e. What percent of their offspring will be albino?
14.f. What percent of their offspring will be normal?
Answer:
14a: aa
14b: Aa
14c: Albino
14d: normal
14e: 50%
114f: 50%
Explanation:
Animals in phylum Arthropoda generally have these characteristics in common.
O chitinous exoskeleton
O no digestive system
Osegmented bodies
O chitinous exoskeleton and segmented bodies
Answer:
Chitinous exoskeleton and segmented bodies.
Explanation:
Phylum Arthropoda are known as jointed legs species which include crabs, spiders, ants, etc. The important characteristic of Arthropoda is they have a hard chitinous exoskeleton that provides them protection and gives flexibility. These phylum species can survive in both terrestrial and marine habitats. Some characteristics of phylum Arthropoda are given below:
1) They have Chitinous exoskeleton which is hardened.
2) Their digestive tract is present at opposite ends of the body and complete with the mouth and anus.
3) They contain jointed limbs.
4) The body structure of these species is showing bilateral symmetry.
To know more about the characteristics of Arthropoda, please check below:
Characteristics of Phylum Arthropoda are:This is the largest group of animals.These animals are bilaterally symmetrical and segmented.Appendages are attached with the body by arthrodial membrane.Body is covered with chitinous exoskeleton. There is an open blood circulatory system called haemocoel, and so the blood does not flow in well defined blood vessels.The coelomic cavity is blood-filled.They have jointed legs (the word Arthropod means jointed legs).Examples are prawns, crabs, scorpions, cockroaches, spiders, butterflies, etc.The interaction between which of the following functions provide cells throughout the plant with glucose?
A)Root hairs and chloroplasts
B)Sclerenchyma and vascular tissue
C)Phloem and anthers
D)Vascular tissue and leaves
The interaction between Sclerenchyma and vascular tissue provides cells throughout the plant with glucose. So, the correct option is B.
What do you mean by Vascular Tissue?Vascular tissues may be defined as the specialized tissue of higher plants consisting essentially of phloem and xylem.
Vascular tissue mediates the transport of minerals and nutrients from the soil to the whole plant via roots. While Sclerenchyma and vascular tissue combined helps in the translocation of glucose throughout the plant.
Therefore, the interaction between Sclerenchyma and vascular tissue provides cells throughout the plant with glucose.
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Final answer:
The correct interaction providing cells with glucose is between vascular tissue and leaves, where leaves produce glucose through photosynthesis and phloem in the vascular tissue transports it throughout the plant.
Explanation:
The interaction between the vascular tissue and the leaves of a plant is primarily responsible for providing glucose to cells throughout the plant. During photosynthesis, leaves use sunlight and water to create glucose and oxygen. The glucose is then transported throughout the plant from the leaves to other tissues via the phloem, which is one of the two main components of vascular tissue.
The xylem and phloem are closely associated within the vascular tissue, where xylem is primarily responsible for the transport of water and minerals from the roots to the leaves, and phloem is responsible for the distribution of sugars and other metabolic products from the leaves to the rest of the plant. Therefore, the correct answer to the question is 'D) Vascular tissue and leaves'.
Which statements best describe science? Check all that apply.
•Science uses beliefs and opinions to construct explanations.
•Science is resistant to new information.
•Science is supported by facts and processes.
•Science involves observation and experimentation.
•Science continually changes and is constantly updated.
Answer:
Science is supported by facts and processes.
Science involves observation and experimentation.
Science continually changes and is constantly updated.
The protection of something so that it will not be destroyed
Which of the following is a biotic factor?
Answer:
pH
Explanation:
If a tube containing a 10% sugar solution is covered at one end by a semipermeable membrane and is
placed in a beaker containing a 5% sugar solution, what will most likely happen to the water?
A. Water will only enter the tube.
B. Water will only leave the tube,
C. There will be no water movement in the tube.
D. Less water will enter the tube than leave the tube.
Look at the drawing below. Explain whether you would expect Jack, Sam or the signpost to
change the most in the next five years.
Answer:
no diagram was made available miss
Answer:
you don't have a diagram here please endeavour to so.
17. How do the cells in meiosis differ from the cells in mitosis?
O A. Cells in meiosis have unique genetic information
O B. Cells in mitosis divide into two new cells
C..Cells in meiosis go through one cycle of cell division
D. Cells in mitosis go through two cycles of cell division
Answer:
A. Cells in meiosis have unique genetic information
Explanation:
The cells in meiosis differ from the cells in mitosis, cells in meiosis have unique genetic information that is in Option A, as the haploid meiotic cell has uniqueness due to cross-over and recombination.
What is the significance of the meiotic cells?These are the cells that undergo meiosis, a cell division that forms haploid cells and the significance of meiotic cells results from the exchange of genetic information between chromosomes, which creates genetic diversity among the resulting cells and is important for their survival, but errors in meiosis can also lead to the formation of cancer cells.
Hence, the cells in meiosis differ from the cells in mitosis, cells in meiosis have unique genetic information that is in Option A, as the haploid meiotic cell has uniqueness due to cross-over and recombination.
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The u.s celebrates earth day every year during the month of
How are bacteria different from viruses?
O
A. Bacteria are living organisms.
O
B. Bacteria are eukaryotes.
O
C. Bacteria do not contain DNA.
O
D. Bacteria cannot exist outside a host.
Answer:
D
Explanation:
Bacteria are different from viruses, as bacteria are living organisms. The correct option is A.
What are bacteria and viruses?
Bacteria are living organisms that are prokaryotic and can withstand extreme conditions and temperatures on the earth. They are good and bad, they help in many processes and can also act as pathogens and increase diseases.
Viruses are microscopic infection agents that are non-living, and they get life by getting into a host. They are pathogens, and they cause infections in plants and animals.
The main difference between bacteria and virus is that bacteria are living organisms and viruses are not, a virus can infect a bacterium, and it is called a bacteriophage.
Thus, the correct option is A. Bacteria are living organisms.
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Consider the keyboard on a typewriter, a laptop, and a smartphone would you consider these to be homologous structures or analogous structures?
Answer:
Analogous structures
Explanation:
Homologous structures are the one that may look alike by appearance but may not serve the same purpose.
While analogous structures may look different from each other but have similar function.
The purpose of having a keyboard is same in case of a typewriter, a laptop, and a smartphone though they look different from each other. Thus, they can be considered as analogous structure.
Metamorphic rocks that consist of only one mineral that forms large interlocking crystals often have a
Answer:
nonfoliated texture
Explanation:
Question 5 of 10
2 Points
Which best describes the progress of science?
O
A. Scientific ideas are changed when new ideas are proven.
O
B. Once science proves an idea, it can never be changed.
O
C. People rarely think old scientific ideas are correct.
O
D. Scientific ideas are not useful once they become old.
Answer:
A
Explanation:
had a quiz on this like 2 years ago...
A scientist is comparing the sequences of related genes among three species. Two of the species have very similar sequences, while the sequence of the third species differs greatly from the others. The scientist uses this comparison to propose an evolutionary history of the species. Which statement best explains the usefulness of the evidence that the scientist gathered?
A. Mutations can act as a molecular clock that show when species had a common ancestor.
B. Changes in gene sequences generally occur when two species interbreed.
C. Changes in gene sequences generally occur when one species evolves into another species.
D. Although some mutations have little effect, many mutations act to distinguish one species from another.
According to the question, Changes in gene sequences generally occur when one species evolves into another species.
What is a specie meaning?A group of similar living things that ranks below the genus in scientific classification and is made up of individuals able to produce offspring with one another.
Thus, option "C" is correct.
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The usefulness of the scientist's comparison is that mutations can act as a molecular clock showing when species had a common ancestor. These differences or similarities in gene sequences can indicate how closely related certain species are, and when they diverged from a common ancestor.
Explanation:The scientist in this scenario is using gene sequences to determine the evolutionary history of the species. This method is reasonable, as A. mutations can act as a molecular clock that show when species had a common ancestor. Mutations accumulate in the genome over time and can be used as a 'clock' to identify when species diverged from a common ancestor, making it possible for scientists to use these sequences to track evolution and derive the relationships between species. If two species have significantly different gene sequences, it indicates that they diverged from their common ancestor a long time ago or evolved at different rates. On the other hand, if two species have very similar gene sequences, it suggests a closer or more recent common ancestor.
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The diagram below shows the general structure of an amino acid. Which type of molecules is for med from amino acids?
Amino acids join together to form proteins, which are crucial for nearly all biological functions. They also sometimes contribute to the formation of neurotransmitters and some hormones.
Explanation:Amino acids are essential building blocks that combine to form larger molecules known as proteins. In certain conditions, they also play a part in the creation of a few other types of molecules, such as neurotransmitters and some hormones. However, their primary role is in protein synthesis. Proteins are incredibly complex and important, serving multiple functions such as catalyzing reactions, communication, transport within cells, and structure support in tissues.
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Which factors are used to characterize a biome, such as the desert, tropical rain forest, or temperate grasslands? Select all of the answers that apply.
Answer:
Temperature and precipitation
Explanation:
Biomes are characterized based on dominant vegetation types in regions with similar climatic conditions. Key factors in shaping biomes include temperature and precipitation. These conditions influence the composition of plant and animal communities, and the concept applies to both terrestrial and aquatic biomes.
Explanation:
The biome, a large-scale community of organisms, is primarily characterized based on the dominant plant types that exist in geographic regions with similar climatic conditions. The Earth showcases both terrestrial and aquatic biomes. The eight major terrestrial biomes include tropical wet forests, savannas, subtropical deserts, chaparral, temperate grasslands, temperate forests, boreal forests, and Arctic tundra.
Temperature and precipitation, and variations in both of these abiotic factors, are key in shaping the composition of animal and plant communities in these biomes. For instance, biomes like temperate grasslands and forests have distinct seasons, experiencing both cold and hot weather throughout the year. In contrast, biomes such as the desert and tundra have low primary productivity due to harsh temperatures and scarcity of water.
Different vegetation and animal life can exist in geographically distinct areas with similar climates due to these factors. Apart from terrestrial biomes, there are also the aquatic biomes which include both saltwater and freshwater ecosystems, with their structuring influenced by different abiotic factors such as sunlight, density, and temperature.
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6. Which of the following is NOT a gene mutation?
a inversion
c. deletion
b. insertion
d. substitution
Answer: inversion
Explanation:
trust me bro
Identify a minimum of three types of genetically engineered animals and describe their functions.
Answer:
Glow in the dark puppies
Cows: scientists genetically engineered cows to produce milk similar to human milk.
Salmon: genetically engineered to reach market size in eight montsh
Explanation:
How does a potato reproduce asexually
Answer:
They don't.
Explanation:
Potatoes reproduce sexually naturally via pollination by bees between potato plants. They also require seeds, the cells involved for sexual reproduction in plants.
Answer:
potatoes can also be grown asexually through vegetative reproduction, which a new plant grows from a fragment of the parent plant
Explanation:
20 points). Is the following statement accurate? “Plants produce fruits primarily to provide food for animals.”
Answer:
No
Explanation:
Plants produce fruit so that
animals will eat it, digest it, and spread the plant's seeds away
from the parent plant.
What are pharyngeal slits ?
A.slits in the throats area
B.fish gills
C.voice box
D none of a above
Answer: B
Explanation:
Pharyngeal slits are filter-feeding organs found among deuterostomes. Pharyngeal slits are repeated openings that appear along the pharynx caudal to the mouth.
What are three ways erosion and weathering are the same
Answer:
The primary difference between weathering and erosion is that weathering occurs in place whereas erosion involves movement to a new location. Both are caused by similar factors of wind, water, ice, temperature, and even biological action. They can also occur together.
Explanation:
If there were no variation among organisms of a species new species would
Answer:
Overpopulate
Explanation
Because they would interact with each other positively.
Who discoverd coffin-lowry syndrome and when
Answer:
Grange S. Coffin
Explanation:
He discovered it in the year 1923
Answer:
Coffin–Lowry was first described by Grange S. Coffin (b. 1923) in 1966 and independently by Robert Brian Lowry (b. 1932) in 1971. Dr. Temtamy showed that the cases represented a single syndrome in 1975.
Explanation: