Answer:
Water (H2O) is polar because of the bent shape of the molecule. ... The highly electronegative oxygen atom attracts electrons or negative charge to it, making the region around the oxygen more negative than the areas around the two hydrogen atoms.
Explanation:
How could you tell if the powder was salt sugar flour or baking soda
Answer:
Through chemical reactions.
Explanation:
You tell if an unknown powder is salt, sugar, flour or baking soda by doing tests to see how the powder would react. For an example, baking soda in vinegar would cause it to fizzle, while flour would just make the vinegar murky and cloudy. With salt and sugar, you can test if it dissolves and if it does it is sugar. If not, it is salt.
I need help ............
Saturated Fats:
bad fats
solid at room temp
butter, red meat
Single bonds
Unsaturated Fats:
good fats
double bonds
oils and nuts
liquid at room temp
The trade-off that occurs when the stomata are open is best described as:________A. when the stomata are open, oxygen can get in but CO2 can get out.B. when the stomata are open, oxygen can get out but CO2 can get in.C. when the stomata are open, oxygen can get out but water can get in.D. when the stomata are open, CO2 can get in but water can get out
Answer:
Explanation:
:
D. when the stomata are open, CO2 can get in but water can get out
Explanation:
Stomata are openings in leaf epidermis that are small they permit the entry of carbon dioxide and also allow the exit of water vapour.
Opening and closing of stomata is regulated according to physiological needs of the leaf.
Carbondioxide that is diffuses into the leave is used for photosynthesis.
Plant regulates water loss from the stomata. during the hot and cold weather water is conserves to maintain a cool environment in plant this is done by closing of stomata.
1.
Chose the best answer
2 Pts
1. If a pea plant has a recessive allele for green peas, it will produce
A
B
A green peas if it also has a dominant allele for yellow peas.
B. both green peas and yellow peas if it also has a dominant allele for yellow peas.
C. green peas if it does not also have a dominant allele for yellow peas.
D. yellow peas if it does not also have a dominant allele for green peas.
Answer:
The anwser is B
In a cross between a white‑eyed female with two X chromosomes and one Y chromosome (XwXwY) with a red‑eyed male, the majority of the males have white eyes and the majority of the females have red eyes. However, rare red‑eyed males and white‑eyed females are present as well. What is the most likely chromosomal constitution of the red‑eyed males and white‑eyed females resulting from this cross? X+XwY females and Xw males X+Y males and XwXw females XwY males and XwX+ females X+Y males and XwXwY females X+XwY males and Xw females
Answer:
The correct answer is - =X+Y males and XwXwY females
Explanation:
during meiosis, XXY females are prone particularly to X chromosome during meiosis. This nondisjunction can lead to the production of both X+Y red-eye male and XwXwY white eye females.
The red-eye male has resulted from the fertilization of X bearing sperm and Y bearing egg. The XwXwY is formed from Y bearing sperm and an egg with two chromosome fertilization.
An organism has the following genotype: AABb. What type of gametes can be produced, and in what proportions ?
Answer:
AB Ab AB Ab
AB 50 Ab 50
Explanation:
The organism can produce TWO types of gametes: AB and Ab. Supposing these genes are unlinked, the proportion of gametes will be 1/2 (50 percent of each gamete).
Meiosis is a reductional cell division where the resulting daughter cells (gametes) where chromosome number is divided into half, thereby producing haploid gametes in a diploid individual.The law of segregation (also called Mendel's First Law) indicates that during meiosis, alleles separate.In consequence, after meiosis, each gamete receives only one allele for a given trait.In conclusion, the organism can produce TWO types of gametes: AB and Ab. Supposing these genes are unlinked, the proportion of gametes will be 1/2 (50 percent of each gamete).
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What is the most likely cause of a disorder if both monozygotic and dizygotic twins show a high concordance rate?
Answer:
The options are
A. Recessive genes
B. Dominant genes
C. Different environmental experiences
D. Shared environmental experiences
The answer is D. Shared environmental experiences
Explanation:
The most likely cause of a disorder if both monozygotic and dizygotic twins show a high concordance rate is shared environmental experiences.
This is because twins usually have a very high degree of concordance rate i.e they have similar genetic traits and characteristics as a result of factors such as Recessive and Dominant genes. The disorder or abnormality which would support this is them having shared environmental experiences which will make them have it in common unlike different environmental experiences which will aid variation.
Why is it almost impossible to commit a crime without leaving behind evidence?
Answer: most of the time, fear and panic
Explanation:
techniques to find the culprit in a crime have improved,
yes its almost impossible to not commit a crime without leaving evidence, the people (police,etc) can use techniques to find your fingerprint, witnesses, footprint, and many other substances that belongs to the culprit. Witnesses can be a big help too. So yes its 'almost' impossible
If each new cell made after mitosis is _______ to the original "mother" cell. This means that skin cells can replace dead, dying, or damaged skin cells when needed.
My answer to the question is copied or replicated.,and then divided to the chromosome
PLEASE HELP FAST I WILL GIVE YOU A LOT OF POINTS Advancements in _________ help us change the way we think about existing scientific knowledge - technology - logic PLEASE HELP FAST ILL DO ANYTHINGGGGG
Advancements in technology help us change the way we think about existing scientific knowledge.
What is Technology?Technology, also referred to as the transformation and manipulation of the human environment, is the application of scientific knowledge to the practical goals of human life.
A number of articles cover the topic of technology. See history of technology; hand tool for general treatment.
History of agriculture, agricultural economics, beekeeping, beer, cereal farming, coffee, commercial fishing, dairy farming, distilled spirits, food preservation, animal husbandry, poultry farming, and soft drink manufacture for treatment of the production of food.
Therefore, Advancements in technology help us change the way we think about existing scientific knowledge.
To learn more about technology, refer to the link:
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The diagram shows the general structure of a lipid, which consists of two main parts. A carboxyl group in a circle and a chain. Which part is circled? alcohol group fatty acid carboxyl group unsaturated lipid
Answer:
Carboxyl Group
Explanation:
Took test and got it right.
Answer:
Carboxyl Group
Explanation:
which best explains mantle convection
Answer:
não sei responder sua pergunta
The paravertebral ganglia are present in both the parasympathetic nervous system and sympathetic nervous system.A. TrueB. False
Answer:
it B. false
Explanation:
If an enzyme is placed in a lower than optimal pH, its loss of activity might be due to
Answer:
denaturing of the peptide bonds
Explanation:
Enzymes are proteins that help speed up chemical reactions. However, they require specific temperatures and pH's to work optimally and produce the best outcome.
If an enzyme is placed in a lower than optimal pH, that means that there are more H+ ions, and the environment is more acidic. This influx of H+ ions can denature the peptide bonds within the enzyme, causing it to fold in a different way and be unable to carry out its normal duties. Hence, the activity of the enzyme will decrease significantly.
~ an aesthetics lover
A sugarcane plant with yellow pollen and wavy leaves is crossed with a plant with yellow pollen and smooth leaves. Seed are collected and germinated. The following results are obtained in the progeny:
153 yellow pollen, wavy leaves
145 yellow pollen, smooth leaves
48 white pollen, wavy leaves
51 white pollen, smooth leaves
a. For each locus (trait): Assign appropriate symbols for the alleles of the genes, indicate the dominance interaction between the two alleles, and give all possible genotypes and their associated phenotypes
b. Give the genotypes of the parents of this cross.
c. Give the expected genotypic and phenotypic ratios of the progeny of this cross.
Answer:
a.
i) Y and y represent Yellow and white alleles for the pollen color gene; where Y (yellow) is dominant over y (white).
ii) W and w represent wavy and smooth alleles respectively for the leaf texture gene. W (wavy) is dominant over w (smooth).
YYWW, YyWW, YyWw, YYWw- yellow, wavy phenotype
YYww, Yyww- yellow, smooth phenotype
yyWW, yyWw- white, wavy phenotype
yyww- white, smooth phenotype
b) yellow pollen and wavy leaves (YyWw) × yellow pollen and smooth leaves (Yyww)
c) Expected genotypic and phenotypic ratio of progeny: 3:3:1:1
Explanation:
This question involves two distinct genes; one coding for pollen color and the other for leaf texture. Let Y and y represent Yellow and white alleles respectively for the pollen color gene; where Y (yellow) is dominant over y (white) while W and w represent wavy and smooth alleles respectively for the leaf texture gene; W allele (wavy) is dominant over w allele (smooth).
Next, we convert the progeny number to phenotypic ratio by dividing each number by the smallest number (48)
yellow pollen, wavy leaves= 153/48 =3.18
yellow pollen, smooth leaves= 145/48= 3.02
white pollen, wavy leaves= 48/48= 1
white pollen, smooth leaves= 51/48= 1.06
Approximately, the phenotypic ratio of the progeny is 3:3:1:1
According to the question, a parent with with yellow pollen and wavy leaves will have genotype YyWw because white pollen (w) and smooth leaf (s) was produced in the progeny. Also, the other parent with yellow pollen and smooth leaves will have genotype: Yyww. In a cross between these two parents i.e. YyWw × Yyww, the following gametes will be produced:
YyWw- YW, Yw, yW, yw
Yyww- Yw, Yw, yw, yw
Using these gametes in a punnet square (see attachment), the following 16 offsprings will be produced in a ratio 3:3:1:1
yellow pollen, wavy leaves (Y_W_) 6
yellow pollen, smooth leaves (Y_ww) 6
white pollen, wavy leaves (yyW_) 2
white pollen, smooth leaves (yyww) 2
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Answer:
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Explanation:
why u do dat
The cell responsible for secreting the matrix of cartilage is the:_______.
Answer:
Osteoblast
Explanation:
It is Osteoblast because Osteoblast is a cell tgat come from the bone marrow and for new bones called osteoid and have only one nucleus, it produce and secrete the organic components and inorganic components of bone or cartilage extracellular matrix. It produce new bones which is made from collagen and some proteins.
HELLLLLLLLLLLLLLLLLLLLLLLLLLP PPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPLLLLLLSSSSSSSSSS Heat and pressure can change limestone into marble. Marble is a(n): igneous rock metamorphic rock sedimentary rock conglomerate rock
Answer:
Metamorphic rock
Explanation:
metamorphic rock formed when limestone is exposed to high temperatures and pressures. Marble forms under this condition because the calcite forming the limestone recrystallises forming a denser rock consisting of roughly equigranular calcite crystals.
What has the study of fossils allowed scientists to do?
A. Describe past environments and the history of life.
B. Study present ocean temperatures at different depths.
C. Analyze the chemical compositions of sedimentary rocks and minerals.
D. Predict which organisms will become extinct in the future
Answer:
A.
Explanation:
I THINK it is A, because fossils are decomposed animal remains, right? So what I'm saying is that the answer is A, because the structure of the fossil could help tell how the creature (or plant) adapted in order to survive in its surroundings.
The correctly sequenced sections of the small intestine are: ____________, _____________, ____________.
Answer:
The correct answer is: duodenum, jejunum, ileum.
Explanation:
The small intestine is the part of the digestive tube that is mostly responsible for the absorption of nutrients that we incorporate through our diet, although part of the digestion also occurs in this segment (specifically in the duodenum).
The first segment, the duodenum, is the shortest of the three (about 25 centimeters in length) and is the one that is connected to the stomach. The duodenum receives the bile (from the liver), the pancreatic juice (from the pancreas), and the gastric chyme (from the stomach), to digest proteins and fat.
The second segment, called the jejunum, is about 2,5 meters long and its main task is to absorb the products of digestion, such as amino acids, carbohydrates, and fatty acids. This is how the nutrients reach our bloodstream and then the tissues where they are needed.
The last segment, the ileum, is the longest (about 3 meters long) and it's responsible for the absorption of vitamin B12 and bile acids. The ileum then connects to the large intestine, where water will be absorbed.
Which best explains the difference between a ball-and-stick model of a chemical compound and a space-filling model?
Answer:
Ball-and-stick models show the bonds between atoms, but not the relative sizes of atoms. Space-filling models show the relative sizes of atoms, but not the bonds between atoms.
Answer:
D
Explanation:
edge
What is the origin of the energy that animals acquire by eating plants or other animals?A. Carbohydrates.B. Fats.C. Heat.D. Sugars.E. Sunlight.
Answer:
the correct answer✅✔☑ is
E. Sunlight☀
Which of the following polypeptides is most likely to form an α-helix explain your answer.(a) CRAGNRKIVLETY (b) SEDNFGAPKSILW (c) QKASVEMAVRNSG
Answer:
(c) QKASVEMAVRNSG
Explanation:
The alpha helix is a protein arrangement tightly packed, thereby the peptide will form a rod. The option (c) is expected to form an alpha helix because it contains three amino acids charged which are aligned on the face of the helix, 1-two residues positively charged: Lysine (K) and Arginine (R), and 2-one residue negatively charged: Glutamic Acid (E).
The following polypeptides are most likely to form an α-helix explain your answer - (c) QKASVEMAVRNSG
Destabilization of α-helicesThe formation of alpha-helix required correct steric configuration. Amino acids with R-groups are too large like tryptophan, and tyrosine or too small glycine destabilize α-helices.
Proline also destabilizes α-helices has irregular geometry and causes steric hindrance because its R-group bonds back to the nitrogen of the amide group.
Option(A) CRAGNRKIVLETY
There is Glycine in this sequence, so it can not form an alpha helix.
Option (B): SEDNFGAPKSILW
The presence of glycine and proline causes not to form an alpha helix.
Option (C): QKSVEMAVRNSG
Glycine is present but still, it is most likely to form an alpha helix as glycine is the end of the sequence.
Find more information about a-helices:
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In what bodies does chlorophyll exist in plants?
Answer:
Stems
Explanation:
How the corona virus pandemic impact Indian agriculture
Answer:
Caterpillars are in a semi-hibernation phase
Explanation:
During winter caterpillars dehydrate themselves and generate a cryoprotectant that flows in their circulatory system (i.e., hemolymph) to avoid water freezing, thus preventing tissue damage. For example, Pyrrharctia Isabella (Lepidoptera, Erebidae), a caterpillar common in North America, can survive 1 week at −20°C. This condition is known as 'semi-hibernation' and it ends when the first temperate days arrive.
Which of the following was NOT a change in the ecosystem as a result of the wolves killing coyotes?
The beaver population increased
The rabbit population increased
The weasel
The mice
The snake
Answer:
The beaver population increased
The four main types of macromolecules found in organisms are
Answer:
carbohydrates, lipids, proteins, and nucleic acids
Explanation:
do all cell types, such as skin cells, fat cells, muscle cells and bone cells, have the same cell cycle lengths (as in the time they take to grow and divide)?
Answer:
No
Explanation:
They have different division rates as some are more important for the body's health than others.
Ex) Skin cells repair very fast as they are on the exterior of the body and are constantly damaged, needing to be repaired quickly to prevent infection.
Day 2
Jordan conducted an experiment to determine if fruit flies would be more attracted to apples or oranges. She put
half an apple and half an orange in a sealed container with 50 fruit flies. After 30 minutes she counted the fruit flies
near the apple and orange. She discovered that 43 fruit flies were near the orange and 7 fruit flies were near the
apple. What kind of variable is the type of fruit that was used in the experiment?
A. Independent variable
B. Constant variable
C. Dependent variable
D. Reliant Variable
Answer:B
Explanation:The scientist changed the variable
Birds cause a lot of damage to airplanes every year to study this problem the US Air Force infinity chicken canon Air Force scientist use the Canon shoot chicken bodies airplanes and control test then analyze the damage the chicken bodies cost evaluate this model in what way do you think it is helpful what are some of the limitations
Answer:
the what hey o
Explanation:
yes