Answer:
The correct option is c. chi-squared = 12.8, yes it is significant.
Explanation:
Available data:
20 Isopods are placed in a 2-choice choice chamber. Different conditions were applied15 minutes later: 18 isopods are found in Chamber A and 2 Isopods are located in Chamber B.H₀= Individuals will be equally distributed
H₁ = Individuals will not be equally distributed.
Chi square= ∑ ((O-E)²/E)∑ is the sum of the terms
O are the Observed individuals: 2 in chamber B, and 18 in chamber A.
E are the Expected individuals: 10 in each chamber
X² = ∑ ((O-E)²/E) = ((2 - 10)²/10) + ((18 - 10)²/10) = 6.4 + 6.4 = 12.8
X² = 12.8
Freedom degrees = K – 1 = 2 - 1 = 1(K = Independent variables = dry cotton and wet cotton)
Significance level, 5% = 0.05 Table value/Critical value = 3.8412.8 > 3.84 meaning that the difference between the observed individuals and the expected individuals in each chamber is statistically significant. Not probably to occur by random chances.
There is enough evidence to reject the null hypothesis. The distribution of isopods is statistically significant.2Which describes a function that is completed by both the
male and female reproductive systems?
a. Nourishing and protecting a developing
embryo.
b. Producing gametes (sperm and egg cells) that
unite inside the female reproductive system.
c. Removing nitrogenous wastes and excess water
from the blood.
d. Producing gametes (sperm and egg cells) that
unite inside the male reproductive system.
Answer:
b. Producing gametes (sperm and egg cells) that unite inside the female reproductive system.
Explanation:
The "gametes" refer to the sex cells in humans. The female sex cells are called "egg cells" and these are being produced by the ovary. The male sex cells are called "sperm cells" and these are being produced by the testicles. After copulation, there's a probability for the egg cells and sperm cells to unite. They unite inside the female's reproductive system, specifically inside the "fallopian tube."
If the small intestine is 6m long, why is it called "small"?
Answer:
because it's skinnier than the dummy thicc large intestine
Answer:
It's called small because it is more narrow in width than the larger intestine
Explanation:
Which bird is best adapted to survive in an environment dominated by seed-bearing plants?
Answer:
hummingbirds
Explanation:
Over many generations, hummingbirds have evolved beaks that are long, thin and well adapted to reach into flowering plants and extract nectar
hummingbirds evolved with long thin beaks and well adapted to reach, extract nectar from flowering plants.
What is bird adaptation ?
An adaptation is any inherited mechanism that makes an organism better able to survive in the changing environment.
It can be structural, behavioral features which help organism to survive.
Example is a hawk's feet and sharp claws are types of adaptations help it to hunt and capture mice.
Another adaptation is habitat where organisms having a specific habitat adapt different features.
Bird beak adaptations is the best example where they use their beaks for acquiring meals, consuming, help in climbing, and protection.
Bird beaks adapted enough to assist them to discover specific meals inside their habitat.
Birds have adapted feathers which make them flight simpler like Long feathers and tail of birds provide them steadiness and insulation.
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Which phrase describes an irregular galaxy?
has a round shape
contains many young stars
has arms that extend from the center
is larger than other types of galaxies
Answer:
"Contains many young stars".
Explanation:
The phrase that describes an irregular galaxy is "contains many young stars". The correct option is B.
What is a galaxy?A galaxy is a collection of stars, stellar remains, interstellar gas, dust, and dark matter that are gravitationally bonded together.
A galaxy is a vast collection of stars, solar systems, gas, and dust. Gravity holds a galaxy together. A supermassive black hole also resides in the centre of our galaxy, the Milky Way.
In contrast to spiral or elliptical galaxies, irregular galaxies lack a recognizable regular shape.
Regular Hubble sequence classes do not apply to irregular galaxies, which typically have a chaotic appearance, no nuclear bulge, and no sign of spiral arm structure.
Thus, the correct option is B.
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What process
does plants go through?
Answer:
photosynthesis
Explanation:
Answer:
They go through a process called photosynthesis.
(7th grade question pt2)
If you start with 100 g, how much do you have after 30 minutes?
Answer:
70
Explanation:
HELP! I will give 30 points + Brainliest for good answer.
1. Could an arctic fox survive in a hot/dry desert? Why/not?
2. Could a desert coyote survive in the tundra? Why/not?
Answer:
artic fox cant blend in in the desert because of it's white color, a desert coyote cannot blend into a tundra because it's coat is not white which makes it harder to catch prey, and easier to be hunted
Explanation:
What do your glands do when it’s time to send out a hormone? What is the term?
Answer:
What Does the Endocrine System Do? Endocrine glands release hormones into the bloodstream. This lets the hormones travel to cells in other parts of the body. The endocrine hormones help control mood, growth and development, the way our organs work, metabolism , and reproduction.
Explanation:
Section 1
Which example most accurately describes a defense mechanism used by an animal?
A lon pants and sweats during warm weather to remove excess heat
A baby goose recognizes its mother and follows her movements
A beaver stores food as fat and hibemates during cold winter months
An arctic fox changes its fur color to blend in with its surroundings
You
Answer:
An arctic fox changes its fur color to blend in with its surroundings
Explanation:
This is a defense mechanism because when it blends into its surroundings it can hide from its predators and help defend itself
The example most accurately describes a defense mechanism used by an animal is a baby goose recognizes its mother and follows her movements. Thus, option B is correct.
What is arctic fox?An arctic fox changes its fur color to blend in with its surroundings and this is a defense mechanism because when it blends into its surroundings it can hide from its predators and help defend itself.The brown color camouflages the brown fox in the forest.
Adaptation is changing of character of an organism for a short time to survive in severe environmental conditions.The brown color camouflages the arctic fox when the snow melts during the summer. The white color camouflages the arctic fox during the winter.
There are various factors which control the regulation of a gene. Temperature can be a regulatory factor for certain genes. Probably, during the warm temperatures, the proteins regulating the fur colour to become reddish brown become activate these genes. As a result, the fur becomes evident.
Therefore, The example most accurately describes a defense mechanism used by an animal is a baby goose recognizes its mother and follows her movements. Thus, option B is correct.
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Small molecules are used as the basic units in the synthesis of large food molecules.
Which statement is correct?
A. Amino acids are basic units of carbohydrates.
B. Fatty acids are basic units of glycogen.
C. Glycerol is a basic unit of oils.
D. Simple sugar is a basic unit of protein.
Section 1
Which example most accurately describes a defense mechanism used by an animal?
A lon pants and sweats during warm weather to remove excess heat
A baby goose recognizes its mother and follows her movements
A beaver stores food as fat and hibemates during cold winter months
An arctic fox changes its fur color to blend in with its surroundings
Answer:
color
Explanation:
i think its color because they can blend out there pray and also get there food before there pray comes to eat them.
Which of the following strategies is most helpful for protecting the soil from wind erosion? (3 points)
-Rotating crops between different fields
-Planting crops in contour strips
-Using shelterbelts to separate crop fields
-Switching from chemical to organic fertilizers
Answer:
planting crops in conotur strips, i just did the assigned reading and it literally says the answer. the other person is wrong
Explanation:
Planting crops in contour strips would be the most helpful strategy for protecting the soil from wind erosion.
• A system of alternating strips of small grains or meadow with strips of row crops on the contour is known as contour stripping.
• The method of contour stripping could minimize soil erosion by up to 75 percent in comparison to planting row crops down and up the slope.
• The strip cropping differentiates fields into narrow, long sections, which assists in monitoring erosion and runoff while growing crops in rotation.
• Contour stripping helps to conserve rainwater and minimize soil erosion.
Thus, the correct statement is planting crops in contour strips.
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am nevoie de ajutor cu acest rebus
1
M
2
O
3
T
O
N
O
P
L
A
S
T
4
5
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8
9
10
1 = organit celular cu rol în procesul de respiraţie
2 = organite cu rol în secreţia celulară
3 = nume dat membranei vacuolelor
4= se găsesc la jumătatea fusului de diviziune în timpul metafazei
5 = au rol în procesul de fotosinteză
6 = împreună formează vacuomul celular
7 = coordonează întreaga activitate a celulei
8 = proces prin care se înmulţesc celulele
9 = organit cu rol în diviziunea celulară
10 = organite celulare descoperite de George Emil Palade
which is the smallest bone in human body
Answer:
Stapes
Explanation:
The smallest bone in human body is Stapes
The Smallest Bone in Rabbit is also Stapes
Stapes is the smallest bone in human body.
Nitrogen fixation is carried out mainly by...
1. Humans
2. Animals
3.Bacteria
4.Plants
How would the genome of a sexual reproducing multicellular organism be different from the genome of an asexual reproducing unicellular organisms
The genome of an erotic reproducing multicellular organism is different from the genome of an agamous reproducing unicellular organism in various aspects.
What do you mean by Genome?A genome may be defined as an organism's complete set of genetic instructions. It is a complete set of DNA in any organism.
The genome of unicellular organisms is genetically identical to one another, while a high diversity is seen in the case of the erotic reproducing multicellular organism due to the phenomenon of variations. The genome of a unicellular organism is very simple, while it is very complex in the erotic reproducing multicellular organism.
Therefore, the genome of an erotic reproducing multicellular organism is different from the genome of an agamous reproducing unicellular organism in various aspects.
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Spinal Muscular Atrophy is an autosomal recessive genetic disorder in the SMN1 gene that leads to muscle deterioration and is often fatal (leads to death) before affected individuals reach adulthood. Carlos is a heterozygote for the gene. What is his genotype and does he have the disease?
a
AA…yes, he only has the dominant alleles
b
Aa…yes, the dominant allele wins
c
aa…no, he only has the recessive alleles
d
Aa…no, but he is a carrier of the disease
plz help ASAP
list one contagious and non-contagious disease
thx and have a good rest of the day
By comparing the position of the sun and the shadows cast at noon on the summer solstice in two different cities, Eratosthenes was the first to determine that Earth was round. the distance between the two cities. the distance from Earth to the sun. the size of Earth.
Answer: The correct statement is ' the Size of the Earth'.
Explanation:
Most Greek scholars soo many years agreed that the earth was shperical in shape but never knew the size of the Earth.
Eratosthenes was a man of many talents, he was a geographer, a mathematician, an astronomer and a historian. With the expanse of knowledge he had, he compared the position of the sun and the shadows cast at noon on the summer solstice in two different cities. With reasonable accuracy, he was able to determine the shperical size of the earth. He computed this by using simple geometry and trigonometry and by recognizing Earth as a sphere in space.
need done asap
List the genetic disorders found on chromosome 17. What do you know about any of those disorders?
Answer: Turner syndrome (45,X0),
Klinefelter syndrome (47, XXY), and.
Cri du chat syndrome, or the "cry of the cat" syndrome (46, XX or XY, 5p-).
Explanation: I am learning this in college now
The genetic disorders found on chromosome 17 are neurofibromatosis type 1, Smith-Magenis syndrome, acute myeloid leukemia, etc., and these are genetic and caused by mutations in certain genes.
What is the significance of chromosome 17?The number of chromosomes varies by species; in humans, there are 46 chromosomes, 44 of which are autosomes, and one pair of sex chromosomes. When chromosome 17 is mutated, neurofibromatosis type 1 develops, resulting in bone and skin abnormalities as well as cognitive impairment and out of other diseases, one is Charcot-Marie-Tooth disease, where peripheral nerves result in muscle weakness.
Hence, the genetic disorders found on chromosome 17 are neurofibromatosis type 1, Smith-Magenis syndrome, acute myeloid leukemia, etc., and these are genetic and caused by mutations in certain genes.
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CAN SOMEONE HELPP MARK BRAINLEST
Answer:
2a.cell and their components
2bcells ....living
2c pre existing cells
3the structural and functional unit of life
4true nucleus .....organells
5 true nucleus ......membrane
how to tell what family members are effected by the huntington disease
Answer:difficulty concentrating
memory lapses
depression – including low mood, a lack of interest in things, and feelings of hopelessness
stumbling and clumsiness
mood swings, such as irritability or aggressive behaviour
Explanation:
I don’t knowAnswer:
Explanation: because
Name the two types of cells in which the HIV multiplies after gaining entry into the human body.
Answer:
Macrophages and Helper T-lymphocytes.
Explanation:
Hope this helped, Have a Great Day!!
Mrs. Johnston heated 5 grams of sugar. The sugar first looked shiny, and then it melted and became dark brown. Finally, all that was left was a black, shiny residue. She then heated 5 grams of sand in the same way. The sand’s appearance did not change.
What explains these results? a Sand is an element, but sugar is a compound.
b Heating the sugar caused a chemical change.
c Heating the sand caused a chemical change.
dHeat only caused physical changes in both the sand and sugar.
Answer:
B
Explanation:
Heating the sugar causes it to burn, thereby inciting a chemical change in the glucose molecules.
Carbon (C)
Atomic #: 6
Atomic Mass: 12
Question: Calculate the number of electrons using the information given. Write the number on the line and then draw the electrons into the Bohr model.
Assuming the atom has a neutral charge, the number of electrons will be the same as the number of protons. The number of protons is given by the atomic number, 6, so there are six electrons.
The first "ring" of the atom (closest to the center) can take two electrons, so draw two electrons there. The second (outer) "ring" of the atom can take the remaining electrons, so draw four electrons there.
Atomic mass is irrelevant in this specific problem.
Which of these is the correct amino acid chain produced from the DNA template strand? F Arginine -Leucine -Proline -Asparagine -Lysine -Arginine G Tryptophan -Phenylalanine -Leucine -Glycine -Asparagine -Phenylalanine H Serine -Leucine -Proline -Asparagine -Lysine -Arginine J Tryptophan -Phenylalanine -Leucine -Glycine -Asparagine -Serine
The correct amino acid chain produced from the DNA template strand is
Arginine - Leucine - Proline - Asparagine - Lysine - Arginine
All amino acids have unique components, configurations and structures as
this allows them to have various types of functions.
However, the amino acid chain format which is present in a DNA template
consists of Arginine, Leucine, proline, asparagine, lysine and arginine
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What is a useful application for this new material?
Answer:
allows scratches to be repaired easily
Explanation:
Edmentum
The new material Emily invented allows scratches to be repaired quickly so it would be useful on cars and other surfaces that experience a lot of water.
A ________ reaction makes people think a person doesn't care. *
0/8
A. anonymous
B. brusque
C. incoherent
D. infuriated
Answer:
Yooooooo answer meee plsss
Explanation:
What biotic adaptations have desert plants made to address the abiotic factors in their environment? a. Desert plants have shallow roots and grow quickly to absorb any soil nutrients before the rain washes the nutrients away. b. Desert plants store water in their leaves or stems and they often have deep or wide-spread root systems to collect as much water as possible. c. Desert plants grow in dense patches for protection against extreme sunlight exposure and have developed fire resistant properties to survive frequent environmental fires. d. Desert plants are low-growing to limit sun exposure
Answer:
Your answer would be B.
Explanation:
A gardener cuts the main stem of a plant, stimulating hormones in the plant that will affect plant growth. Which statement describes how the plant will most likely grow as a result?
Seeds from the plant will germinate faster.
Fruits on the plant will not develop.
The plant buds will become inactive.
Lateral leaf growth will start on the plant.
Answer: D
Explanation: Lateral leaf growth will start on the plant.
Answer:
d
Explanation: