I will mark someone brainliest! Please help!!
Answer:
The first one
Explanation:
Mark me brainliest please
Type a paragraph describing how the circulatory and respiratory systems work together to deliver oxygen to the body’s tissues and remove carbon dioxide.
i. Include the names of structures and other components that play a role in gas
exchange.
ii. Explain how the interactions between the circulatory and respiratory systems
contribute to maintaining homeostasis in the body.
b) Type a second paragraph comparing the accuracy of your model to actual organ systems and
their functions.
i. Consider how a model is different from an actual human body.
ii. Describe the limitations of a model
Answer:
The circulatory and respiratory systems work together to circulate blood and oxygen throughout the body. Air moves in and out of the lungs through the trachea, bronchi, and bronchioles. Blood moves in and out of the lungs through the pulmonary arteries and veins that connect to the heart.
The circulatory and respiratory system work together to provide oxygen and remove carbondioxide gas.
How circulatory and respiratory system work together?The circulatory and respiratory systems work together to circulate blood and oxygen throughout the body. Air moves in to bring oxygen and out of the lungs to remove carbondioxde gas from the body. Blood moves into the lungs to bring carbondioxide gas and to load oxygen with the help of pumping of heart.
So we can conclude that circulatory and respiratory system work together to provide oxygen and remove carbondioxide gas.
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difference between plants and animal cell
Answer:
Plant cells have a cell wall, but animals cells do not. Cell walls provide support and give shape to plants. Plant cells have chloroplasts, but animal cells do not.
Explanation:
Hope this helps
sorry if incorrect
Brainliest?
Answer:
Plant cells have chloroplasts,animal cells don't.
Plant cells also have cell walls.
Animal cells have lysosomes and centrosomes and plant cells don't.
Which of these causes weather conditions on Earth to change frequently
Answer:
the difference in the absorption of heat between land and water.
The greatest amount of genetic variation is produced in offspring that reproduce -
A. sexually through fission B. asexually through budding C. sexually through meiosis D. asexually through mitosis
In meiosis, the greatest amount of genetic variation is produced in offspring that reproduce sexually, hence option C is correct.
How do organisms reproduce sexually through meiosis?Because the environment is continually changing, sexual reproduction often has an advantage over asexual reproduction.
Increased phenotypic variation, or the physical variety of the organisms, results from higher genetic diversity.
Each gamete has a unique DNA set because of recombination and independent assortment during meiosis. The resultant zygote has a special set of genes as a result.
Genetic variety can be increased by new genes and alleles being created as a result of gene duplication, mutation, or other events.
Therefore, it is possible for novel gene combinations to arise during sexual reproduction.
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YO PLZ HELP ME!!!
The ____________________ endoplasmic reticulum has a role in transporting proteins to different compartments in the cell.
Answer:
The rough endoplasmic reticulum works with the Golgi apparatus to move new proteins to their proper destinations in the cell. The membrane of the RER is continuous with the outer layer of the nuclear envelope. Smooth endoplasmic reticulum does not have any ribosomes attached to it, and so it has a smooth appearance.
Explanation:
The rough endoplasmic reticulum has a role in transporting proteins to different compartments in the cell.
What is Protein transporting?Protein transporting may be defined as a process through which proteins are transported from one cellular organelle to another after being synthesized in the rough endoplasmic reticulum along with the Golgi complex.
Due to having ribosomes on their surface, the rough endoplasmic reticulum is known as the site of protein synthesis. Due to the presence of ribosomes, their surface is not as smooth as compared to the smooth endoplasmic reticulum.
The protein after synthesis packed into the spherical-shaped vesicles which are then fused with the membrane of a specific cell organelle in order to function properly.
Therefore, the rough endoplasmic reticulum has a role in transporting proteins to different compartments in the cell.
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Why do we not use a Punnett Square to determine the offspring for asexual reproduction? Is that form of reproduction diverse? Explain your answer.
Answer: There isn’t another organism to cross with
Explanation:
In asexual reproduction there is only one parent so all the genes come from one person.
BT crops are developed by adding traits from which of the following organisms?
phytoplankton
bacteria
viruses
superweeds
Answer:
bacteria
Explanation:
'Bt' crops are genetically modified crops that contains a certain gene of a bacteria called Bacillus thuringiensis. The name of this GM or transgenic crop was coined from the bacteria used.
The gene coding for the toxic traits of the bacteria are added into Bt crops e.g cotton, hence, the crops become resistant to pest attack. Therefore, according to this question, BT crops are developed by adding traits from BACTERIA.
having free earlobes (F) is a dominant trait in humans and having attached earlobes (f) is recessive a father has the genotype ff and the mother has the genotype Ff
describe the genotype ratio for their offspring
how many codons specify 5 amino acids?
Answer:
20, Im not completely sure tho
Explanation:
Which two fields of study provide the core information that is used to classify organisms?
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A dog, a human, and an ant all use their legs for locomotion. Which statement(s) below accurately characterize the evolutionary
relationship between these species? Select ALL that apply.
Answer: B,C, and E
Explanation:
All the following apply:-
Legs are homologues between the human and dog , but analogues in the ant.
Humans and dogs have more recent common ancestor then the dog and the ant
DNA sequence comparison for the human and the dog will show greater homologue than between the dog and ant.
What are homologues organs?
These are the organs which are anatomically similar but differ in function.
What are analogues organs?
These are the organs which are anatomically different but functionally similar
Hence the B), C) and E) are correct option.
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Draw a flowchart to illustrate how a change in a nucleotide in a DNA strand leads to symptoms experienced by those with sickle cell anemia.
Answer:
Explanation:
The Flowchart is in the picture below. I hope it would be helpful for you.
A nucleotide is a compound containing three component units namely a pentose sugar, a heterocyclic nitrogenous base and a phosphate group. The nitrogenous base present may be either purines or pyrimidine.
What is sickle cell anemia?The sickle cell anemia is one of a group of inherited disorders known as the sickle cell disease. It affects the shape of the red blood cells which carry oxygen to all parts of the body. In sickle cell anemia some red blood cells are sickle shaped.
Red blood cells are usually round and flexible, so that they move easily through blood vessels. The sickle shaped red blood cells are also called crescent moons. These sickle cells also become rigid and sticky which slow or block the blood flow.
SCD causes a basal substitution of adenine A to thymine T in the sixth codon of beta globin. This leads to the replacement of glutamic acid with valine in polypeptide chains of haemoglobin.
The flowchart is given below:
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Name THREE products in the food industry that are produced by biotechnology
Using the Periodic Table of Elements, what group of elements are also known as the Halogen Family?
Answer:
I NEED SOME POINTS TO ASK A QUESTION UGH
Explanation:
Answer:
the answer is this hope it helps
True or False: Our organ systems work separately and do not interact with each other at all in our bodies
Which of Earth's layers is the thinnest?
OA.
outer core
ОВ.
crust
OC.
mantle
OD.
inner core
Pls help! Explain why blood pressure must decrease in the arterioles before entering the capillaries ahhhhh
this is because the blood flow slow through the capillaries to allow gaseous exchange. Plus the pressure is higher in capillaries because the diameter of the capillaries is smaller than arterioles
In squash plants, yellow fruit (Y) is dominant to white fruit (y). If two plants heterozygous for yellow fruit are crossed, what are the possible genotypes of the offspring?
Answer: YY, Yy, yy
Explanation:
The possible genotypes of the offspring would be YY, Yy, yy.
What do you mean by genotypes?The genotype of an organism is its complete set of genetic material. Genotype can also be used to refer to the alleles or variants an individual carries in a particular gene or genetic location.
Genotype is the genetic make-up of an individual organism. Your genotype functions as a set of instructions for the growth and development of your body. The word 'genotype' is usually used when talking about the genetics of a particular trait (like eye colour).
The different types of genotypes are- homozygous recessive (pp), homozygous dominant (PP), and heterozygous (Pp). The homozygous dominant and the heterozygous genotypes show the same phenotypes.
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what is environment?
Answer:
the surroundings or conditions in which a person, animal, or plant lives or operates.
Explanation:
Answer:
An enviroment is an ecosytem made up of all living things.
The chemical colchicine is used in the production of karyotypes. Colchicine prevents spindle fibers from forming during the cell cycle. What is a result of preventing spindle fibers from forming? Answer
A The cell cycle skips G1 phase
B Mitotic division is skipped, and the cell cycle proceeds to cytokinesis.
C Mitotic division stops in metaphase and cannot proceed to anaphase.
D The cell cycle skips S phase and proceeds to G2 phase.
Answer: the correct answer is C
Explanation:
Preventing the formation of spindle fibers makes the mitotic division stop in metaphase, and thus fail to proceed to anaphase.
• Colchicine prevents the polymerization of the microtubule, and thus, prevents the arrangement of the mitotic spindle, which shows the prevalence of another checkpoint in the cell cycle.
• As a result, the activity of the maturation promoting factor remains high, the chromosomes stay condensed, and the nuclear envelope fails to redevelop.
• A toxic effect is exerted on the living cells by the colchicine, which usually results in the arrest of the process of mitosis at an eventual stage, generally the metaphase, with the generation of unusual and bizarre nuclear configurations, and thus, resulting in the death of the cell.
Thus, the correct answer is option C.
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Why are DNA fingerprints are more reliable than hand fingerprints in solving crimes.
Answer:
Fingerprints are still the most cost-effective and reliable way to identify people: ... No two fingerprints have ever been identical in the many millions of comparisons. Fingerprints solve ten times more unknown-suspect cases than DNA fingerprinting.
Explanation:
where are protein channnels that are used during facilitated duffusion loacated
Answer
Facilitated diffusion is the diffusion
Explanation
Facilitated diffusion is the diffusion of solutes through transport proteins in the plasma membrane
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Mom is a dominant purebred for big feet. Dad is a hybrid for foot size. What are their chances of big feet? Or little feet? _ out of _ or _ %
Answer:
Parent´s chances:
Mom´s chances of giving their children the big feet allele are 2 out of 2, or 100%Mom´s chances of giving their children the small feet allele are 0 out of 2, or 0%Dad´s chances of giving their children the big feet allele are 1 out of 2, or 50%.Dad´s chances of giving their children the small feet allele are 1 out of 2, or 50%Offspring chances:
The offspring have 4 out of 4 or 100% of probability of having big feet. And 0 over 4 or 0% of probabilities of having short feet.Explanation:
Due to technical problems, you will find the complete answer and explanation in the attached file
. Which statement best expresses the central idea in the article?
A. Scientists have discovered a way to prevent genetic defects in babies, but some believe genetic development should be left to nature
B. Scientists have discovered a way to prevent genetic defects in babies, but some worry that the process could be used for great economic gain
C. Scientists have discovered a way to prevent genetic defects in babies, but the method is against many families’ religions
D. Scientists have discovered a way to prevent genetic defects in babies, but the process is still very risky
Answer:
I believe the Answer is D
Explanation:
Mainly because b, c, arent very logical and A is also a decent choice but i believe d is the answer
2. Why are cell walls useful in plant cells but not animal cells?
Why do you think mining on land would be less costly than mining in the ocean?
Explanation:
Because dense minerals are heavier and drop to the stream bottom, lighter minerals are carried along in the current of the stream. Why do you think that mining on land is less costly than mining in the deep ocean is? It is easier to get to land than the ocean and you need special equipment to go under water.
Which of the following stages of photosynthesis involves carbon fixation, reduction reactions, and the ribulose 1,5-bisphosphate regeneration?
photoreduction
light-independent reaction
light-dependent reaction
first stage photosynthesis
Answer:
light-independent reaction
Explanation:
Photosynthesis, which is a unique metabolic process where plants synthesize their food (glucose) in the presence of sunlight, occurs in two stages namely: light dependent stage and light-independent stage.
The light independent stage is also known as dark stage because it does not require light to occur. It occurs in the stroma of the chloroplast where ATP and NADPH are used to fix carbon into the production of glucose. This stage involves three major processes:
- Carbon fixation of CO2
- Reduction reactions of G3P
- Regeneration of ribulose 1,5-bisphosphate (RUBP).
Scientists hypothesize that early whale ancestors were amphibious. Which statement
below is most consistent with this hypothesis? The fossil animals ____________.
how cutting down trees contribute to global warming??
Answer:
Carbon is stored in the plant, which helps a plant to grow. But when trees are cut down and burned and or allowed to rot, their basically storing carbon dioxide, which then gets released into the air ... again known as carbon dioxide. In conclusion this is how deforestation or cutting down trees and including forests can lead to and or contribute to global warming.