True Or False
1. The earth is tilted 23 degrees off the vertical.
2. The Earth’s North pole star is Polaris.
3. Due to the earth’s rotation, stars appear to move.
4. The Earth rotates ¬clockwise once a day.
5. The zenith is the direction directly over the observer’s head.
6. All stars observed at the equator rise in the east and set in the west.
7. Those constellations that we can see year round are called circumpolar.
8. There are five constellations visible in the Northern hemisphere all year.
9. Big Dippers and Little Dippers are circumpolar stars.
10. The 14 Constellations of the Zodiac are the constellations that the Sun appears to pass through during one year
Answers
1. True, the Earth is tilted 23 degrees off the vertical.
2. True, the Earth's North Pole star is Polaris.
3. True, due to the Earth's rotation, stars appear to move.
4. False, the Earth rotates counterclockwise once a day.
5. True, the zenith is the direction directly over the observer's head.
6. True, all stars observed at the equator rise in the east and set in the west.
7. True, those constellations that we can see year-round are called circumpolar.
8. False, there are more than five constellations visible in the Northern Hemisphere all year.
9. True, Big Dipper and Little Dipper are circumpolar stars.
10. False, there are 12 Constellations of the Zodiac, not 14, that the Sun appears to pass through during one year.
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Related Questions
Which is the correct sequence that describes how sound reaches the brain?
a. pinna - auditory canal - tympanic membrane - ossicles - cochlea - auditory nerve
b. pinna - tympanic membrane - auditory canal - ossicles - cochlea - auditory canal
c. auditory canal - pinna - tympanic membrane - cochlea - ossicles - auditory nerve
Answers
The correct sequence that describes how sound reaches the brain is: a. pinna - auditory canal - tympanic membrane - ossicles - cochlea - auditory nerve
This sequence represents the pathway of sound from the outer ear to the inner ear and eventually to the brain. Here's a breakdown of each component:
Pinna: The pinna, also known as the outer ear, collects sound waves from the environment.
Auditory canal: The sound waves travel through the auditory canal, a tube-like structure that leads to the middle ear.
Tympanic membrane: The sound waves cause vibrations in the tympanic membrane, also known as the eardrum.
Ossicles: The vibrations from the tympanic membrane are transmitted to three tiny bones in the middle ear called the ossicles. The ossicles consist of the malleus (hammer), incus (anvil), and stapes (stirrup).
Cochlea: The stapes bone transfers the vibrations to the cochlea, which is a spiral-shaped, fluid-filled structure in the inner ear.
Auditory nerve: Inside the cochlea, the sound vibrations are converted into electrical signals by specialized hair cells. These electrical signals are then transmitted to the brain through the auditory nerve.
Therefore, the correct sequence is a) pinna - auditory canal - tympanic membrane - ossicles - cochlea - auditory nerve.
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Marcus grew three rosemary plants. He put one in
direct sunlight, one in the shade, and one in the
dark. The plant in the sun grew the most quickly
and looked the healthiest. Marcus concluded that
rosemary plants grow best in the sun.
How would you evaluate Marcus's conclusion?
O A. His conclusion is valid because his
experiment included a control.
B. His conclusion is valid because he tested
only one variable.
O C. His conclusion is flawed because he did
not perform enough trials.
O D. His conclusion is flawed because it is
based on the appearance of the plants.
Answers
Answer:
His conclusion is flawed because he did
not perform enough trials.
Explanation:
i jus took the test
From Mendel's first set of experiments, he concluded that
a
there are two factors controlling each characteristic
he studied.
b the two factors separate and go to different
gametes.
с
of the two factors, one of the factors dominates the
other factor.
d all of the above are correct
Answers
Answer:
d. all of the above are correct.
The process during which the cytoplasm is divided between two daughter cells is known as ____?.
Answers
Answer: cytokinesis
Explanation:
If your small intestine were unwound, approximately how long would it be? 6 inches.
Answers
If the small intestine were unwound, it would be approximately 6 meters (20 feet) long in adults.
The small intestine is the longest part of the digestive tract, and it is coiled up in the abdomen to fit within the limited space. The length of the small intestine is important for the absorption of nutrients from the food we eat. The long, narrow tube provides ample surface area for the absorption of nutrients into the bloodstream, allowing the body to extract the maximum amount of energy and nutrients from the food. Additionally, the small intestine contains many folds and projections called villi and microvilli, which further increase the surface area available for absorption.
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how would your range of motion be affected if you lacked a sternocleidomastoid?
Answers
The sternocleidomastoid is an important muscle that helps with neck movement. If you lack this muscle, your range of motion would be limited.
What is the sternocleidomastoid?The sternocleidomastoid muscle (SCM) is a paired muscle that is located in the neck. It is one of the primary muscles that help to move the head and neck. The SCM is located on both sides of the neck and is attached to the sternum and the clavicle at one end and the mastoid process of the temporal bone at the other end.
The sternocleidomastoid muscle has several functions, including: Rotating the head from side to side, Bending the head from side to side, Flexing the neck, which means bringing the chin towards the chest, Extending the neck, which means bringing the head backwards. Therefore, if you lacked a sternocleidomastoid, your range of motion would be affected.
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What does the thyroid gland, shown in the image below, do?
(Pineal, Hypothalamus,
and Pituitary glands)
Thyroid
Thymus
Adrenal
Pancreas
Ovaries (2)
Tostos (2)
A. Releases a hormone if blood calcium levels get too high
B. Releases hormones to regulate the endocrine system
C. Regulates the pituitary gland
D. Releases insulin if blood sugar levels get too high
Answers
A
The thyroid gland secretes the thyroid hormones that releases a hormone if blood calcium levels get too high and in this way regulats the calcium level in the blood that is present in option A.
The thyroid gland plays a crucial role in regulating metabolism, which is the process by which the body converts food into energy. Metabolism is a complex process that involves various chemical reactions that take place within the body's cells. The thyroid hormones T4 and T3 are responsible for regulating many aspects of metabolism such as thyroid hormones increase BMR, which means that the body burns more calories even when one is not doing any physical activity.
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1) Eubacteria cells lack a nucleus, and are therefore________
Viewing eubacteria requires a microscope,because they all single celled organisms.another word for single celled is_______
Answers
Answer:
The correct answer is - prokaryotic and unicellular.
Explanation:
Eubacteria is known as the true bacteria and belongs to the prokaryotic type of cells which is characterized by no double-membrane organelles or the nucleus. All the genetic material is present in the cytoplasm itself.
These bacteria are single-cell microscopic organisms as they are very minute to see by the naked eyes and required a microscope to study. Another word for the single-cell organisms is unicellular.
Why is it that vegetables stored in the freezer will have their cells damaged, while snowdrops (Galanthus nivalis) in cold countries have to go through harsh winters without their cells being destroyed?
Answers
Answer:
Plummeting winter temperatures often lead to frost damage in plants. The damage occurs when ice crystals form within plant tissue, damaging their cells. Leaves and tender new growth are usually affected first. Initially, they will appear wilted.6 Jan 2017
The skin and the mucous membranes are similar in which of the following aspects?
a. epithelial cells packed closely together
b. outer layer of dead cells
c. production of mucus
d. multiple layers of epidermal cells
Answers
The skin and the mucous membranes are similar in a. epithelial cells packed closely together.
The skin and mucous membranes share the similarity of having epithelial cells that are packed closely together. Epithelial tissue is one of the main types of tissues in the body and is responsible for forming the outer covering of organs, including the skin and the mucous membranes.
Epithelial cells are tightly packed together, forming a continuous layer that acts as a protective barrier. This close packing helps prevent the entry of microorganisms, toxins, and other harmful substances into the underlying tissues. It also helps in regulating the exchange of molecules and fluids between the internal and external environments.
While both the skin and mucous membranes have multiple layers of cells (d), not all epithelial tissues have an outer layer of dead cells (b). The production of mucus (c) is a specific characteristic of mucous membranes, which secrete this viscous substance to lubricate and protect the surfaces of certain organs, such as the respiratory and digestive tracts. Therefore, the correct answer is a. epithelial cells packed closely together.
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what term describes the mode of asexual reproduction in which offspring develop from unfertilized eggs? regeneration fission budding parthenogenesis
Answers
The term describes the mode of asexual reproduction in which offspring develop from unfertilized eggs D. parthenogenesis.
In this mode of reproduction, females produce eggs that are capable of developing into embryos without fertilization by a male gamete. This type of reproduction is common in insects, reptiles, and some fish species, where the females can produce offspring without mating with a male. Parthenogenesis is an important phenomenon in evolutionary biology as it allows populations to persist even when no males are present. In some cases, parthenogenesis can also lead to genetic diversity through mechanisms such as mutation and gene recombination.
The process of parthenogenesis can occur naturally or can be induced artificially through various techniques such as embryo splitting, oocyte activation, and somatic cell nuclear transfer. Overall, parthenogenesis plays an essential role in the survival and evolution of many species. So therefore the correct answer is D. Parthenogenesis describes the mode of asexual reproduction in which offspring develop from unfertilized eggs
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Horse tail and mucor are not kept in the same kingdom. Why?
Answers
Horse tail (Equisetum) and Mucor are not kept in the same kingdom as they belong to different kingdoms because they exhibit distinct characteristics and are classified based on their evolutionary history, cellular organization, and reproductive strategies.
Horse tails, also known as horsetails or Equisetum, are members of the plant kingdom, specifically the division Equisetophyta.
They are vascular plants that reproduce by spores.
Horse tails have a unique appearance, with jointed stems, whorls of tiny scale-like leaves, and reproductive cones at the tips of their stems.
They have a complex life cycle with alternation of generations, including both a sporophyte (dominant diploid phase) and a gametophyte (haploid phase).
Their cells have a rigid cell wall composed of cellulose, a characteristic feature of plant cells.
On the other hand, Mucor belongs to the kingdom Fungi.
Mucor is a genus of fungi within the phylum Zygomycota.
Fungi are eukaryotic organisms that lack chlorophyll and obtain nutrients through absorption.
They have a filamentous body structure called mycelium, composed of thread-like hyphae.
Mucor reproduces asexually through the production of spores, which are formed by the fusion of genetically distinct hyphae.
Fungi are heterotrophic, meaning they obtain their nutrients by breaking down organic matter in their environment.
The differentiation of horse tails (plants) and Mucor (fungi) into separate kingdoms is based on fundamental differences in their cellular organization, nutritional strategies, and reproductive mechanisms.
While both horse tails and Mucor are multicellular organisms, they belong to distinct lineages of life with diverse evolutionary histories, leading to their classification in separate kingdoms.
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in pea plants, purple are dominant to white.
complete the chart showing the genotypes and phenotypes possible.
someone help me i’m kinda lost on how i do this
Answers
Answer:
PP (genotype) - Purple (Phenotype)
Pp (Genotype - Purple (Phenotype)
pp (Genotype) - White (Phenotype)
Explanation:
The genotype allele combinations, in order to for purple to be dominant there are three possible genotypes
*Capital P represents a purple dominant allele
*Lowercase p represents a white recessive allele
(Alleles are the variants of a certain gene, ex: brown eyes, green eyes, etc. )
A Dominant always overpowers the recessive, the only way for a recessive to show would be to have two recessive alleles from both parents
ex: Green eyes recessive to Brown
B - Brown bb = green eyes (from dad)
b - green bb = green eyes (from mom)
this means that their child would have green eyes because there is no brown present
So for your pea plants to be purple
Pp = Purple pp = white
PP = Purple (yes there can be white recessive present, it just might not appear as a plant because of the percent of purple)
The colors or observations we see as the plant are the phenotypes
so the colors I have listed would be the phenotypes
Don't get alleles and phenotypes confused, alleles are the various forms of a gene, and phenotypes are what we see when the gene is brought through.
What evidence indicates that mutations in human DNA mismatch repair genes are related to certain forms of cancer
Answers
Mutations in human DNA mismatch repair genes have been found to be related to certain forms of cancer, specifically hereditary nonpolyposis colorectal cancer (HNPCC), also known as Lynch syndrome due to the accumulation of DNA replication errors, including single nucleotide mutations and microsatellite instability.
The inability to repair these errors can lead to an increased risk of cancer development.
In HNPCC, mutations in genes involved in DNA mismatch repair, such as MLH1, MSH2, MSH6, and PMS2, lead to an increased risk of developing colorectal cancer and other types of cancer. The presence of microsatellite instability (MSI) is also commonly seen in tumors from individuals with HNPCC, providing further evidence for the role of DNA mismatch repair genes in the development of certain cancers.
Overall, the identification of mutations in these genes and their association with cancer provides strong evidence for the importance of DNA mismatch repair in maintaining genomic stability and preventing the development of cancer.
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What variable is influenced by the variable that is manipulated? *
O dependent
Onone are correct
O independent
O unidentifialbe
Answers
The manipulated variable is also known as the INDEPENDENT VARIABLE because it alters the results. The dependent variable is affected by the manipulated variable.
Which of the following is NOT made of
proteins?
A. Muscle
B. Polypeptide chains
C. Hydrogen
D. Ligaments
PLS HELP FOR BRAINLIEST
Answers
Answer:
Hydrogen
Explanation:
Answer:
the answer is A. muscle.
witch of the following statements regarding enzymes is NOT true
Answers
The statements regarding enzymes that is NOT true is option A. Enzymes increase the kinetic barrier.
Do enzymes affect the kinetics of a reaction?Enzymes, like other catalysts, don't change the substrate-product equilibrium position. Enzyme-catalyzed reactions, in contrast to chemical reactions that are not catalyzed, exhibit saturation kinetics.
Note that Proteins called enzymes aid in accelerating metabolism, or the chemical reactions in our bodies. Some substances are built, while others are deconstructed. Enzymes are a component of all life. Enzymes are produced by our bodies on their own.
Therefore, Instead of raising the kinetic barrier, enzymes lower it (the statement "Enzymes increase the kinetic barrier" is a false statement and is the correct answer choice here). Enzymes lower the activation energy (the claim that "Enzymes speed up reactions by lowering the energy of activation" is accurate and correct), are not consumed in reactions, and have no impact on a reaction's thermodynamics.
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Which of the following statements regarding enzymes is NOT true?
A. Enzymes increase the kinetic barrier.
B. Enzymes speed up reactions by lowering the energy of activation.
C. Enzymes are not used up during reactions.
D. Enzymes do not affect the thermodynamics of a reaction.
Dichotomous Key Challenge:
10. Remember how we mentioned that the dichotomous key we provided was only designed for use with organisms
A-E in the chart? If we add another organism such as the cat below, you will find that the dichotomous key cannot arrive at the scientific name, Felis catus, for this cat. In the space below, please redesign the dichotomous key so that it includes the cat. You can still reuse steps as the key should now be able to arrive at all organisms A-F.
Answers
Here's a redesigned dichotomous key that includes the cat (Felis catus) along with organisms A-E:
Is the organism aquatic?
Yes: Go to step 2.
No: Go to step 3.
Does the organism have fins?
Yes: Organism A (Salmon)
No: Organism B (Dolphin)
Does the organism have wings?
Yes: Go to step 4.
No: Go to step 5.
Does the organism have feathers?
Yes: Organism C (Eagle)
No: Organism D (Bat)
Does the organism have four legs?
Yes: Go to step 6.
No: Organism E (Snake)
Does the organism have a tail?
Yes: Organism F (Cat)
No: This key cannot classify this organism.
What is a dichotomous key used for?A dichotomous key is a useful scientific tool for identifying various organisms based on their visible characteristics. Dichotomous keys are made up of a succession of statements, each with two options, that guide users to the proper identification.
They may, however, be used to detect minerals - and, in principle, any other sort of material that can be recognized by a known set of observable properties.
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What causes the light to refract as it
passes from air to water?
Answers
Answer:
Light refracts whenever it travels at an angle into a substance with a different refractive index (optical density). This change of direction is caused by a change in speed. When light travels from air into water, it slows down, causing it to change direction slightly. This change of direction is called refraction
Hope this helps.
Below shows a process that occurs in cells. The type of building blocks represented by the letters A, B, and C in this process are:
A: Nucleotides
B: Codons
C: Amino Acids
D: Nitrogen bases
Answers
Proteins consist of strands of amino acids, which is produced in the ribosomes of the cell.
3. Which biomolecule is properly matched to its monomer?
A nucleic acid : amino acid
B polypeptide : 1 glycerol + 3 fatty acids
Clipid : nucleotide
D carbohydrate : monosaccharide
A
Answers
Answer:
D
Explanation:
Monosaccharides are simple units of carbohydrates
URGENT --- ok so please - Define electronegativity - IN UR OWN WORDS SO PLS do not copy and -paste from web please phrase it in your own words that make sense (im in HS biology)
Answers
Answer:
Ok, so what electronegativity means is it measures the tendency of an atom to attract a shared pair of electrons. It is modified by both its atomic number and the distance at which its valence electrons equivalent from the charged nucleus.
Explanation:
hope u get a good grade ;)
Answer:
i did that same thing a while ago
Explanation:
Will give brainliest!!!!! product reduces decaying, infection, and worms in food. what is the negative symptoms. is for gmo.
Answers
Answer:
it replaced natural foods which in turn could possibly make us sick. Also it's not too great for the environment. It could take effect the natural food and possibly make it so the natural ones no longer grow.
Answer:
In order for it to possibly make us sick, it replaced natural food.
gfr is 115 ml/min, tm for glucose is 287.5 mg/min. plasma glucose concentration is 1 mg/ml. what is the renal threshold for glucose?
Answers
The renal threshold for glucose is 287.5 mg/min.
The renal threshold for glucose refers to the plasma glucose concentration at which glucose starts to appear in the urine. In this scenario, the renal threshold for glucose is determined by the tubular maximum (TM) for glucose. The TM for glucose represents the maximum rate at which the renal tubules can reabsorb glucose from the filtrate back into the bloodstream. When the plasma glucose concentration exceeds the TM for glucose, the excess glucose is no longer completely reabsorbed and is instead excreted in the urine.
Given that the TM for glucose is 287.5 mg/min and the plasma glucose concentration is 1 mg/ml, we can conclude that the renal threshold for glucose is 287.5 mg/min.
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help pls, just need this part on the top
Answers
Answer:
Concentration Gradient
Explanation:
This means that it will move from a region where it's in lower conc to a region of higher conc
Describe the biological perspective of personality development.
Answers
Answer:
The biological perspective on personality emphasizes the internal physiological and genetic factors that influence personality.
Explanation:
yea
complete the statements about the nature of scientific knowledge. among the different types of scientific knowledge, are likely to be modified or discarded most frequently. long ago, in the 1600s, scientists discarded the phlogiston theory because .
Answers
Among the different types of scientific knowledge, are likely to be modified or discarded most frequently. In the 1600s, scientists discarded the phlogiston theory because new evidence didn’t support it.
Phlogiston Theory
The phlogiston theory is a defunct scientific idea that proposed the existence of phlogiston, a fire-like element stored within combustible bodies and released after combustion. The name is derived from Ancient Greek. Johann Joachim Becher first introduced the notion in 1667, and Georg Ernst Stahl later formalised it. Phlogiston theory sought to explain chemical processes like combustion and rusting, which are now referred to as oxidation. It was challenged by the resulting weight gain, and it was abandoned before the end of the 18th century as a result of experiments by Antoine Lavoisier and others. Phlogiston theory led to tests, which resulted in the discovery of oxygen.
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Are protists motile? If not, how do they survive and grow/spread?
Answers
Yes, protists are motile.
While many protists have the ability to move, usually via flagella, cilia, or pseudopodia, some protists may not move throughout all or a portion of their life cycle. Many organisms have dormant stages (spores or cysts), and they obtain their sustenance through photosynthesis, absorption, and ingestion.
Protists are often watery organisms. To survive, they require a moist atmosphere. Their natural habitats include wet areas like marshes, puddles, lakes, and the ocean. Protists can exist independently.
Binary fission is the most common method of protist reproduction. Multiple fission and budding are the other two asexual reproductive processes that protists go through. Amoeba, euglena, Trypanosoma, and plasmodium are a few examples of protists that can reproduce asexually.
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A dehydration reaction joins two glucose molecules to form maltose. The formula for glucose is C₆H₁₂O b. What is the formula for maltose?
Answers
Therefore, the formula for maltose is C₆H₁₀O₅, which is obtained by removing one water molecule from the formula of glucose (C₆H₁₂O₆) through a dehydration reaction.
The formula for glucose is C₆H₁₂O₆. In a dehydration reaction, two glucose molecules are joined together to form maltose. To determine the formula for maltose, we need to remove one water molecule (H₂O) from the formula of glucose.
Here's the step-by-step process:
1. Start with the formula of glucose: C₆H₁₂O₆
2. Remove one water molecule by subtracting H₂O: C₆H₁₀O₅
3. The resulting formula C₆H₁₀O₅ is the formula for maltose.
During a dehydration reaction, a water molecule is eliminated as two molecules combine to form a larger molecule. In this case, two glucose molecules combine to form maltose, and one water molecule is removed. This process is also known as condensation.
The formula for maltose is C₆H₁₀O₅, which is obtained by removing one water molecule from the formula of glucose (C₆H₁₂O₆) through a dehydration reaction.
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Can somebody help please due today
Answers
Answer:
Fossil record, history of life as documented by fossils, the remains or imprints of organisms from earlier geological periods preserved in sedimentary rock. Their ages can be established by comparing the fossils in each layer.
Answer:
Explanation:
Fossil record, history of life as documented by fossils, the remains or imprints of organisms from earlier geological periods preserved in sedimentary rock. Their ages can be established by comparing the fossils in each layer.
Credits to the person under me i just need points
(pretty sure its correct tho)