Answer:
Cell nucleus and mitochondria
Explanation:
brainliest please
why can't science prove something beyond a shadow of a doubt?
Answer:
Scientific theories can never be proven true beyond all doubt; they can only be supported by a wide body of evidence. Only one of the statements that follow uses the term theory in its correct, scientific sense.
Explanation:
Scientific hypotheses can never be confirmed beyond a reasonable doubt; they must be backed up by a substantial amount of evidence. Only one of the following assertions utilizes the word "theory" in the scientific sense.
what is variations.
Answer:
1 : a change in form, position, or condition Our routine could use some variation.
2 : amount of change or difference Scientists record the variations in temperature
Explanation:
i hope it helps mark me brainliest^^
Which process of respiration relies on partial pressure gradients to move air in and out of the lungs
Question 4 of 5
Which moon of Jupiter is covered in craters?
O A. lo
O B. Callisto
O C. Europa
O D. Ganymede
Answer:
B. Callisto
Explanation:
The moon of Jupiter which is covered with craters is Callisto
What is the role of DNA?
a: to allow substances to enter the cell
b: to fight infections
c: to encode genetic information and control the cell
d: to release cytotoxins
Answer:
c
Explanation:
every thing related to dna is encoding or transcribing genetic info or genes
Answer:
To encode genetic information and control the cell
Explanation:
I GUESS
Which plant structures are common to all angiosperms?
spores
flowers
cones
endoskeleton
Answer:
Option B. (Flowers) is correct!
Explanation:
A plant structure common to all angiosperms is the flowers, which are reproductive structures formed from four whorls of modified leaves. The angiosperms have two structures that ensure their reproductive success: flowers and fruits, being the flowers the one that forms a cooperative evolutionary relationship with insects, and other animals to help disperse the pollen from the female plant gametophytes.
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what are the chromosomes of an animal
Answer:
Chromosomes are thread-like structures located inside the nucleus of animal and plant cells. Each chromosome is made of protein and a single molecule of deoxyribonucleic acid (DNA). Passed from parents to offspring, DNA contains the specific instructions that make each type of living creature unique
Explanation:
Answer & Explanation:
Chromosomes in an animal are thread-like structures located inside the nucleus of the cells. Each chromosome is made of protein and a single molecule of deoxyribonucleic acid (DNA). Passed from parents to offspring, DNA contains the specific instructions that make each type of living creature unique.
pls help ill give brainliest and 5 staarts
If you soak seeds in water to soften them, and then cut them in half and stain them with iodine, most of the inside of the seed will change color, turning a purplish-black. What substance is the iodine reacting with to cause this color change?
Answer:
Starch
Explanation:
Starch consists of amylopectin and amylose, and is found in plants. In the presence of iodine, amylose starch turns a dark purple or blue color, due to the absorption of different wavelengths of light than before.
Earth orbits the Sun every 365 days, causing seasonal patterns that vary by location. In the winter, the Northern Hemisphere is tilted away from the Sun, and receives the smallest amount of solar energy than any other time of the year. What can be expected in the Northern Hemisphere during this season?
A) warmer temperatures and decreased daylight
B) cooler temperatures and increased daylight
C) warmer temperatures and increased daylight
D) cooler temperatures and decreased daylight
Answer:
D) cooler temperatures and decreased daylight
Hello, I don't mean much, but what are the signs and symptoms of cholera?????
Answer:
Diarrhea (Stool appears pale and milky)
Fatigue and weakness
Nausea and vomiting
Dehydration
Electrolyte Imbalance
Low blood pressure
Loose skin and dry mouth
Rapid heart beat
Weight loss
Explanation:
Which muscle originates on the occipital bone and spines of c7-t12 and inserts on the clavicle and acromion of the scapula?.
Answer:
trapezius
Explanation:
R 16 (050SMC)
Primary production isted in much of the open ocean by low levels of won, which is a necessary phytoplankton rent it has been suggested by some that pumps could be placed in these
phytoplankton blooms. What problem uma mpact) do you think scientists would be trying to address with this biotechnological approach?) ponto)
would move on her from the deep to the
whole thing
O Reduction in Iron pollution in ocean sediments
O Reduction of bycatch
Reduction of the greenhouse gas carbon dioxide in the atmosphere
Reduction of the human impact on marine species diversity
Answer: Reduction of the greenhouse gas carbon dioxide in the atmosphere
Explanation:
phytoplankton use photosynthesis to take the sun’s light waves and convert it into energy. They also take carbon dioxide and convert it into oxygen for other organisms to breathe.
A diagram of a plant cell is shown.
The process being represented is ____.
A. Meiosis
B. Mitosis
C. Respiration
D. Mutation
Answer:
Mitosis
Explanation:
All the pictures represent the 5 phases of mitosis: interphase > prophase> metaphase> anaphase> telophase
It cannot be considered as meiosis because we have a single cell dividing into 2, neither a respiration or mutation
Of the following anatomical structures, which is homologous to the bones in the wing of a bird?
Answer:
The Flipper of whale and the wing of bird have similar morphology and anatomy but differ in their functions according to their species as well as the habitat where they live in
The wings of the birds are homologous to the flippers of whales. Both of these homologous organs possess similar structures and morphology.
What do you mean by Homologous organs?Homologous organs may be defined as the organs of different animals that are having a similar structure but differ in their functions.
Both the wings of the birds and the flippers of the whales are homologous organs that have different functions birds fly with the help of wings while whale swims with the help of flippers.
Therefore, the wings of the birds are homologous to the flippers of whales.
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Explain the difference between a lateral moraine and a terminal moraine.
Answer:
Terminal moraines are found at the terminus or the furthest (end) point reached by a glacier. Lateral moraines are found deposited along the sides of the glacier. Medial moraines are found at the junction between two glaciers.
Which of the following would NOT
inhabit a freshwater biome?
A. Crawfish
B. Catfish
C. Sharks
D. Insects
I
The following that would NOT inhabit a freshwater biome is a Shark. Option C is correct.
What is a habitat?An organism's habitat is the place where it makes its home. Habitat provides all of the necessary environmental circumstances for an organism to thrive.
In conclusion, Crawfish, Catfish, and Insects are all habitats of the freshwater biome.
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An elephant has 56 chromosomes. Which statement about a zygote of an elephant is true?
Answer:
alright if this works the same way it does with humans (i'm almost totally sure it does but just in case) the answer is: the zygote has 56 chromosomes, 28 inherited from the mother and 28 from the father.
Explanation:
What will happen if Mars was not closer to the sun?
Answer:
It would not affect Earth at all, but Mars would be colder and dark most of the time, like the planets far away from the sun.
Explanation:
Answer:
Mars is already a cold planet but if it moved farther to the sun, it would mess up all of the other planets' orbit.
Tay-sachs disease is caused by a mutation in the hexa gene located on chromosome 15. tay-sachs follows an autosomal recessive pattern of inheritance. with the help of the diagram, identify which of the offspring will be an unaffected carrier. a diagram showing the genes of parents who are carriers of tay-sachs disease a. a, b, and c b. b and c c. a and d d. a e. d
Tay-Sachs disease follows an autosomal recessive pattern of inheritance, so the unaffected carrier will be the child a.
The correct option is d, a.
What is Tay-Sachs disease?Tay-Sachs is a neurodegenerative disorder, which causes the deficiency of an enzyme called hexosaminidase A.
The enzyme hexosaminidase A present in the lysosome helps in the digestion of fats.
This disorder causes the excess accumulation of lipid or fat in the ganglion cells.
This causes dysfunction of the central nervous system.
The correct option is d, e.
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A tooth has an exposed ______, a constricted ______, and one or more roots that anchor it to the jaw. multiple choice question.
Answer:
crown, neck.
Explanation:
A tooth has an exposed crown, a constricted neck, and one or more roots that anchor it to the jaw.
33. Why is it beneficial that plants have two kinds of chlorophyll (a and b)?
Answer:
chlorophyll in plants complement each other in absorbing sunlight.
Explanation:
light with a wavelength of 460 nm isn't always substantially absorbed by means of chlorophyll a, but will as a substitute be captured through chlorophyll b, which absorbs strongly at that wavelength. the two forms of chlorophyll in flowers
It is beneficial to have two kinds of chlorophyll in photosynthetic plants because both types of chlorophyll work complementary to each other and allow maximum absorption of light in the blue to red spectrum.
What do you mean by Chlorophyll?Chlorophyll may be defined as the green-colored pigment in plants, algae, and cyanobacteria that is essential for photosynthesis.
Chlorophyll A absorbs the light of wavelength 400 to 450nm with maximum intensity and 650 to 700nm with minimum intensity.
Chlorophyll B absorbs the light of wavelength 450 to 500nm with maximum intensity and 600 to 650nm with minimum intensity.
Therefore, it is beneficial to have two kinds of chlorophyll in photosynthetic plants because both types of chlorophyll work complementary to each other and allow maximum absorption of light in the blue to red spectrum.
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In almost 70% of cystic fibrosis cases, a set of three base pairs is lost from chromosome 7. this results in the loss of an amino acid in the cftr gene, causing cystic fibrosis.
what type of mutation is described?
-deletion
-nondisjunction
-substitution
-translocation
Almost 70% of cystic fibrosis cases result in the loss of an amino acid in the CFTR gene, causing cystic fibrosis due to a deletion.
What is a mutation?A mutation is any genetic alteration in the genetic material (DNA molecule) of the genome of an organism.
A deletion is a special type of mutation where nucleotide bases are lost from the genetic material.
Insertions and deletions are mutations collectively referred to as indels, whereas single nucleotide polymorphisms are called SNPs.
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Which of these does NOT greatly affect climate?
A. Earth's Tilt
B. Angle of Sunlight
C. Seasonal Changes
D. Location on Earth
Answer:
D...
Explanation:
Which of the following are examples of habitats where sympatric speciation could occur?
Choose one or more:
A. different locations along the Great Barrier coral reef in Australia
B. opposite sides of a mountain range
C. the North Rim and South Rim of the Grand Canyon
D. an elevational gradient on the south-facing slope of a mountain
E. varying water depths in a lake
An example of habitats where sympatric speciation occur is the North Rim and South Rim of the Grand Canyon.
What is Sympatric speciation?Sympatric speciation refer to evolution of a new species or the creation of new species from the ancestal species that is alive and surviving while both of them continue to live in the same geographic region. In evolutionary biology and biogeography, sympatric refer to organisms that have ranges and their ranges overlap so that they occur together some places.
The individual are dependent on some physical needs like shelter, food and so on.
Therefore, An example of habitats where sympatric speciation occur is the North Rim and South Rim of the Grand Canyon.
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The first of these to occur when a new volcanic island rises out to the sea is
topsoil is formed.
lichens grow.
mosses grow.
rock cools and cracks.
Answer:
D
Explanation:
Rock cools and cracks because the topsoil can't be formed until the rocks crack, and if the topsoil isn't formed then nor lichens nor mosses can grow.
During translation, the peptide bond formation is catalyzed by:.
Answer:
RNA (referred to as a ribozyme)
Explanation:
How long does it take for gums to heal after tooth extraction.
what is the difference between Genetics and environment?
it's child development class help me please
Genetics: that deals with the heredity and are varnation of organisms.
and
Enviroment: that condition by which one is surrounding.
"I think"
Do you think your classroom population is a typical representation of a larger population such as your entire school
My class can not be a representation of the larger school because my class consists of people of the same age bracket and the same level of study.
What is a representative population?A representative population is a population that reflects the whole. A sample must be taken in such a way that it can effectively reflect the components of the whole.
My class can not be a representation of the larger school because my class consists of people of the same age bracket and the same level of study. The school is composed of different classes occupid by students of different age groups and different levels of study.
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