Answer:
B. Leaves provide a place for photosynthesis to occur.
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hope it helps..
have a great day!!
Answer:
B. Leaves provide a place for photosynthesis to occur.
Explanation:
The main function of leaves is to provide a place for photosynthesis to occur.
los derechos sexuales son iguales a los reproductivos? porfa help
easy biology question below first correct answer gets brainliest
Answer
B
Explanation:
if,k
Answer:
the answer is ....C
.........
A biology teacher asks his class to make models of a plant cell, an animal cell, and a bacterial cell. Aside from cytoplasm and the cell membrane which other cell structure will the students need to make all three models?
A. Ribosome
B. Nucleus
C. Golgi Apparatus
D. Chloroplast
E. Cell wall
Carol's little brother was at the duck pond in the park. He tried
to catch one of the ducks. Even though the duck would almost
let him touch him, the duck would run away. This is an example
of the duck responding to
O
trying to reach homeostasis.
a change in the metabolism.
O
a change in body temperature.
O
fight or flight.
Answer:
O fight or flight
Explanation:
The duck is afraid of Carol's little brother, even though the duck would almost let him get close
Describe how the lizard population is changing
Answer:
Each time lizards colonized an island, they evolved into many of the same forms. .Other lizards adapted to life among the thin branches lower down on the trees, evolving short legs that help them hug their narrow perches. Still other lizards adapted to living in grass and shrubs, evolving long tails and slender trunks.Lizards are low on the food chain. Providing protection from their natural predators ensures their continued existence. Plant bushy perennials, create a rock or brush pile or use man-made items like stacks of bricks or pipes.
A function of chloroplasts in plant cells is to:
A. absorb water.
B. fold proteins:
C. make carbohydrates.
D. store wastes.
Answer:
A
Explanation:
What are the two main functions of chloroplasts? are to produce food (glucose) and to store food energy.
The pancreas is an organ connected to the digestive tract of humans by a
duct (tube) through which digestive enzymes flow. These enzymes are
important to the digestive system because they
Answer: The enzymes are important to the digestive system because they help in BREAKING DOWN of food substances that contains fat, carbohydrates and proteins.
Explanation:
In the process of digestion, several substances are secreted into the duodenum which is the first part of the small intestine. The pancreas, through the pancreatic duct, secretes pancreatic juice. This juice contains several digestive enzymes which include:
--> Amylopsin- This helps in the breaking down of starch( CARBOHYDRATES) to maltose.
--> trypsin: this is a protease that helps in the breaking down of PROTEIN into polypeptide.
--> Lipase: This helps in the breaking down of FAT to carboxylic acids and glycerol.
All the above enzymes of the pancreatic juice require an alkaline medium to work in. This is provided by the bile which is secreted in the fall bladder.
While all zebras have stripes, no two zebras share the same pattern. Variation, overpopulation or adaptation
Answer:
Variation
Explanation:
"Overpopulation" describes an issue in which there are too many of a certain organism.
"Adaptation" describes a phenomena where an organism evolves to adapt in its environment.
Well, lets compare zebra stripes to fingerprints. Fingerprints have nothing to do with overpopulation, and unique fingerprint patterns have nothing to do with adaptation, but the seemingly infinite variation in both fingerprints and zebra stripes is definitely there. So, the uniqueness of the patterns throughout each zebra individual is variation.
Select the statements that are true. Question 1 options: CO2 and O2 are water-soluble molecules that diffuse freely across cell membranes. The differences in permeability between artificial lipid bilayers and cell membranes arise from variations in phospholipid content. Transporters are similar to channels, except that they are larger, allowing folded proteins as well as smaller organic molecules to pass through them. Cells expend energy in the form of ATP hydrolysis so as to maintain ion concentrations that differ from those found outside the cell.
Answer:
CO2 and O2 are water-soluble molecules that diffuse freely across cell membranes.
Cells expend energy in the form of ATP hydrolysis so as to maintain ion concentrations that differ from those found outside the cell.
Explanation:
CO2 and O2 are highly soluble molecules in water due to their polarizability and their ability to react with water molecules and form new compounds. CO2 is 30 times more soluble in water than oxygen, which also has a high solubility. This ability allows these two molecules to diffuse freely across cell membranes.
Cells promote hydrolysis, that is, the breakdown of ATP molecules when they need to expend energy for any metabolic process, especially when they need to maintain a balance between ion concentrations inside and outside the cell. This is because ATP is a highly energetic molecule and its breakdown promotes energy for the cell to use in its activities.
What are the raw materials (reactants/goes into) for photosynthesis?
A. water and glucose
B. carbon dioxide and water
C. glucose and oxygen
Answer:
c
Explanation:
the more mass an object has, the more _____ it needs in order to move. A. Force B. Inertia
Answer:
Force it need in order to move
Answer:
A. force
Explanation:
inertia is that it keeps moving force gets it moving
John is in his forties and his blood pressure reading shows consistently 160/100 mm of Hg. Name the disease. Mention any four reasons for such a condition?
Answer:
Stage 2 hypertension
Explanation:
Hypertension is a body circulatory system condition whereby the pressure of the blood vessels are raised persistently. The heart pumps blood to the different organs of the body through the blood vessels, each time it beats
The normal blood pressure in the vessel = 90/60 mmHg to 120/80 mmHg
The blood pressure of a prehypertension person or person at risk of having hypertension = 120-139/80-89 mmHg
The blood pressure at Stage 1 hypertension = 140/90-99 mmHg
The blood pressure at Stage 2 hypertension = 160/100 mmHg.
The Heart of a small mammal is pierced by a spear of a hunter. Suggest ONE way in which this would lead to the death of the animal.
Bleeding will lead to death
Which of the following describes the relationship between genes and
chromosomes?
Chromosomes form into genes during cellular reproduction
Genes are special sequences of nucleic acids found on chromosomes
Every gene an organism has is found on every one of its chromosomes
All of an organism's chromosomes can be found next to its genes in the cell nucleus
Answer:
Genes are special sequences of nucleic acids found on chromosomes.
Explanation:
A single DNA molecule is a chromosome. A gene is a certain chromosome region of DNA.
All cells of the body are genetically the same, but cells are different from others because specific gene sets are expressed. Different cells, therefore express different genes, which enable them to perform a specific function.
The deoxyribonucleic (DNA) genes are segments that contain a code for a certain protein that works in one or several cell types in the body. Chromosomes are cellular structures that contain the genes of a person. Genes that are in the cellular nucleus are contained in chromosomes.
where are 70s type of ribosomes found in eukaryotic cells.
Which describes the correct paring of DNA bases?
A. A with G, and C with T
B. A with T, and C with G
C. A with C, and T with G
D. A with A, and G with G
Where are the pigments that trap the photons (light energy)?
A. in the stroma of the chloroplast
B. in the mitochondria
C. in the thylakoid disks of the chloroplast
Answer:
C. in the thylakoid disks of the chloroplast
Explanation:
These reactions occur in the thylakoid stroma and cytosol. Chlorophyll a is the only light-absorbing pigment in reaction centers.
Answer:
C. in the thylakoid disks of the chloroplast
Explanation:
The pigments that trap the photons (light energy) is located in the thylakoid disks of the chloroplast.
An allele whose trait only shows up when no dominant allele is present
hidden allele
dominant allele
present allele
recessive allele

What do hypothesis, theories, and laws have in common ?
please answer this for me
the answer is D !!!!!!!
Answer:
maco shark
Explanation:
It is a fast speed-swimming shark that has been called “the peregrine falcon of the sharks” in allusion to the fastest bird in the world. It is considered an animal dangerous to humans because of the speed which can attack and its ability to jump into the fishing boats.
Which statement is a testable scientific hypothesis? A. Fern plants grow faster in moist soil than in dry soil. B. All people at the meeting agreed that it was time for lunch. c. Careful analysis shows that cats are nicer house pets than dogs. D. Classical music is the most important kind of music.
Answer:
A
Explanation:
They tested it by planting fern plants in both moist and dry soil
Why is there a higher rate of skin cancer in Australia than in other
parts of the world?
Answer:
In Austrailia there is the highest rate of skin cancer because there is so much sunlight and most austalians have the wrong skin type for thier environment meaning people with pale skin get burnt more easily
Explanation:
Australia has a high rate of skin cancer because there's something different about the sunlight in Australia, and most people in Australia have skin that is easily damaged by light from the sun. Light carries energy that can make materials change. Therefore, Australia has a high rate of skin cancer because the ozone layer is damaged by the energy carried from the UV Light, being absorbed by the ozone and damaging allowing that light to transmit through and damage the genetic material of those individuals with lower levels of melanin.
What happens to cause air to be exhaled from the lungs?
A)The rib muscles contract and move upward
B)The chest cavity expands and grows larger
C)The diaphragm relaxes and moves upward
D)The lungs contract and expand
Answer:
The answer is C.
Explanation:
When you breathe out or exhale, your diaphragm relaxes and moves up into your chest cavity. As the space in your chest cavity gets smaller, the air rich in carbon dioxide is forced out of your lungs and windpipe, and then out your nose or mouth.
Be a Lunatic
A solar eclipse happens when --
the sun is directly between Earth and moon
the moon is in Earth's shadow.
the moon is directly between Earth and sun.
the sun blocks out light from Earth.
When the Moon passes between Sun and Earth, the lunar shadow is seen as a solar eclipse on Earth. When Earth passes directly between Sun and Moon, its shadow creates a lunar eclipse. Lunar eclipses can happen only when the Moon is opposite the Sun in the sky, a monthly occurrence we know as a full Moon.
Explanation: im just smart like that
Identify the statement that describes the imperfection of natural selection. Identify the statement that describes the imperfection of natural selection. Natural selection has not had sufficient time to create the optimal design in each case but will do so given enough time. Natural selection is generally limited to modifying structures that were present in previous generations and in previous species. In many cases, phenotype is not merely determined by genotype but by the environment as well. Though we may not consider the fit between the current skeletal arrangements and their functions excellent, we should not doubt that natural selection ultimately produces the best design.
Answer:
Variability was seen as imperfection, so natural selection could only eliminate the inferior and imperfect, not giving rise to new things, new species.
:
The variable your measuring during an experiment would be the?
Which question can be answered by science?

A. Should we conserve water?
B. Does this medicine reduce fevers?
C. Which projects should be funded?
D. Is it right to recycle?
Answer: B. Does this medicine reduce fevers?
Explanation: This is because you can run experiments and use the scientific method to answer your question.
Answer:
B
Explanation:
I think A, B and D can be answered in terms of science but I would say B is the answer because B only can be answered in terms of science. You can't give another answer for it like A and D
The picture above shows onion root cells in various stages of mitosis.
The arrow is pointing to a cell in -
Answer:
Anaphase.
Explanation:
You can see the separation happening. This is anaphase.
Hope this is correct, good luck on your studies.
Which graph represents selection that may lead to reduced variation
in a population?
The frequency graph represents selection that may lead to reduced variation in a population.
Mendel crossed yellow-seeded and green-seeded pea plants and then allowed the offspring to self-pollinate to produce an F2 generation. The results were as follows: 6,022 yellow and 2,001 green (8,023 total). Which of the following statements correctly describes the relationship of the allele for green soods to the allele for yellow seeds? A. The green allele is dominant to the yellow allele B. The two alleles exhibit incomplete dominance C. The green alicle is recessive to the yellow allele D. The two alleles are codominant
Answer:
C. The green allele is recessive to the yellow allele
Explanation:
Complete dominance occurs when one gene variant or allele referred to as the 'dominant allele' completely masks the expression of another allele referred to as the 'recessive allele' in heterozygous individuals, i.e., in individuals carrying one copy of the dominant allele and one copy of the recessive allele for a particular locus/gene (whereas homo-zygous individuals carry the same alleles for a given locus/gene). Mendel crossed pure lines of pea plants, i.e., homo-zygous lines for different traits such as seed color (yellow and green) and seed shape (round and wrinkled). In this case, the parental cross was YY x yy, where the 'Y' allele is dominant and encodes for yellow seed color, and the 'y' allele is recessive and encodes for green seed color. From this cross, Mendel obtained a hybrid F1 (i.e., all progeny was heterozygous with genotype Yy). An expected 3:1 ratio as observed in this case (6,022 yellow and 2,001 green seed >> 3:1 ratio) is characteristic of the progeny that results from mating between F1 heterozygous parents, where each parent has one dominant allele and one recessive allele, i.e., F1 parental cross: Yy x Yy >> F2: 1/4 YY (yellow color); 1/2 Yy (yellow color); 1/4 (green color) >> 3:1 ratio of yellow to green seeds.
