Answer:
The partial pressure of oxygen determines the affinity of hemoglobin for oxygen. Red blood cells have the shape of a flattened disk, generating a broad surface area for the diffusion of oxygen. Since their only purpose is carrying oxygen throughout the body, they lack many typical cell structures, including a nucleus.
Explanation:
Hope this helps
Answer:
* Because of their viscoelastic characteristic, red blood cells are able to squeeze through very thin capillaries in order to deliver oxygen and remove carbon dioxide. * The biconcave shape of red blood cells helps maximize the overall surface area required for oxygen absorption.
Explanation:
What type of organic molecule (carbohydrates proteins lipids nucleus acids) does DNA hold the instructions to make
Answer: macromolecules
Explanation:
Answer:
Proteins
Explanation:
DNA sequences are "codes" that ultimately make proteins.
Scientists predict that in another 250 million years, the continents will be located in different positions. How is this possible? *
A. The tectonic plates on Earth are continually moving at a slow rate.
B. The gravity on Earth causes the continents to move around.
C. Scientists think that the continents will move back into the shape of Pangaea again.
D. All of the above
Answer:
d- all of the above
Explanation:
Scientists predict that in another 250 million years, the continents will be located in different positions is All of the above.
What do scientists predict will happen to the continents in another 250 million years?
For now it looks that in 250 million years, the Earth's mainlands will be connected again into one giant landmass, just as they were 250 million years old now. From Pangea, to present, to Pangea Ultima!
Thus, option "D" is correct, All of the above.
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How does an impulse move during reflex arc? *
Answer:
Reflex arcs
Sensory neuron sends electrical impulses to a relay neuron, which is located in the spinal cord of the CNS. Relay neurons connect sensory neurons to motor neurons. Motor neuron sends electrical impulses to an effector. Effector produces a response (muscle contracts to move hand away).
Chromosome's tightly coiled structure enables them to be
properly segregated during ____
Answer:
Chromosomes are coiled structures made of DNA and proteins. Chromosomes are the form of the genetic material of a cell during cell division. It is this coiled structure that ensures proper segregation of the chromosomes during cell division. During other phases of the cell cycle, DNA is not coiled into chromosomes
Chromosomes' tightly coiled structure enables them to be properly segregated during cell division.
Chromosomes:Chromosomes are coiled structures made of DNA and proteins.Chromosomes are the form of the genetic material of a cell during cell division. It is this coiled structure that ensures the proper segregation of the chromosomes during cell division.During other phases of the cell cycle, DNA is not coiled into chromosomes. It exists as a grainy material called chromatin.
Thus, we can conclude that during cell division chromosomes' tightly coiled structure enables them to be properly segregated.
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We have two kinds of rats, dark brown and white rats in a population. In a rain forest scenario, with dark top soil, which kind of rats can survive better, taking into consideration, natural selection?
a.
White rat
b.
Both of them will survive
c.
Brown rat
d.
Neither
C. The brown rat
Explanation:
The brown rat will blend into the dark soil better than the white rat will.
How many major categories are fossils grouped into?
Answer:
Fossils are remnants or impressions of ancient organisms that are naturally preserved in stone. While there are hundreds of fossil types, they are often grouped into two major categories: Body fossils, which are the preserved remains of plants and animals; and Trace fossils, which are records of an animal’s behavior, such as footprints.
how to find the energy that the food has
Explanation:
To calculate the energy available from a food, multiply the number of grams of carbohydrate, protein, and fat by 4,4, and 9, respectively. Then add the results together.
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Answer:
can you please show us what the options are and I can for sure help you out?!
Question 112 pts Choose the word/phrase from the right to complete the statement on the left. Choices may be used once, more than once, or not at all. Group of answer choices Archaea are ________________ cells. [ Choose ] Eubacteria cell walls contain __________________. [ Choose ] ______________________ cells have a membrane bound nucleus and/or organelles. [ Choose ] All ______________ domain organisms live in extreme environments. [ Choose ] Plants have cell walls made of___________________. [ Choose ] ________________________ are considered to be the first life forms on Earth. [ Choose ] Fungi cell walls are composed of ___________________. [ Choose ] Fungi use ______________________ to obtain nutrients. [ Choose ] _______________________are organisms which do not fit in other eukaryotic categories. [ Choose ] Plants are classified as __________________ because they make their own food. [ Choose ] Corals have a _________________ relationship with algae. [ Choose ] Corals are classified as _______________ due to their relationship with algae
Answer:
The correct answer is -
1. Archaea are prokaryotic cells. These are one of the two prokaryotic organism domain. the other is eubacteria.
2. Eubacteria cell wall contains peptidoglycan which is composed of sugar and amino acids.
3. Eukaryotic cells have membrane-bound nucleus or organelles. which distinguishes it from prokaryotic cells.
4. All archaea domain organisms found in extreme conditions such as halophiles, extremophiles, and thermophile.
5. The cell wall of the plant is made of cellulose, a polymer of glucose units.
6. Eubacteria are considered to be the first living organism or form found on earth.
7. Fungi cell walls are made up of a chitin cell wall. which is makes it different from eubacteria and plants.
8. Fungi uses absorption to obtain nutrients. Most of the fungi uses haustaurium to absorb nutrients.
9.Fungi are organism that do not fit in other eukaryotic category. Hence they were classified as separate kingdom in 5 kingdom classification.
10.plants are classifies as autotrophs because they make their own food.These autotrophs serve as primary producers.
11.Corals have a symbiotic relationship with algae. Algae provide food for coral through photosynthesis where as coral provide protection to algae.
12.corals are classified as autotrophs due to their relationship with algae.They are mixotrophs generally because they act as autotrophs with association of algae and capture prey by tentacles thus making heterotrophic nutrition.
The supporting paragraphs in a research essay are built on:
A. your opinions about works of literature.
B. accepted rhetorical conventions.
C. bibliographical entries to your works-cited list.
O D. the information you gather during the research process.
Answer:
D
Explanation:
(b) Many amphibian species throughout the world are endangered
Suggest three reasons why many amphibian species are endangered
Answer:
The correct answer is - habitat loss, pollution and disease, and climate change.
Explanation:
Many amphibians are endangered due to several reasons including, habitat loss, climate change, pollution and disease, non-native species invasion, and many others. Amphibians are mostly live in damp habitats or moist soil and low-level water and these habitats are destroys due to pollution, deforestation or excess fishing.
Pollution and disease also affect these species most specifically chytridiomycosis, caused by the chytrid fungus was an epidemic for many amphibians. Climate change also affects the temperature and soil quality precipitation of the habitat that not suitable for these species.
Who began the study of genetics?
Robert Hooke
Gregor Mendel
Charles Darwin
Carl Linneaus
Which organism develops breathing organs from pharyngeal arches?
A.
shark
B.
whale
C.
sea star
D.
dolphin
Answer:
Shark
Explanation:
Which factor could have allowed the population of black peppered moths to increase in the late 1800s? (1 point)
less rain
less vegetation
Less food
less predation
Natural selection favored the population of black peppered moth. This led to less predation and increased population of black peppered moth.
What is natural selection?The natural selection is the process to adapt and change according to the changing environment by organisms.
Initially there were both white and black peppered moths were present. It was recognized that the camouflage of white moth was not worked in dark forest.
This caused mutation in them and changed their wing color to darker shades.
This led to less predations as they were no more recognizable in dark forest due to their dark wings.
Thus, the correct answer is d.
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Given the circumstances of the investigation, which of the following beakers would likely produce the least amount of oxygen?
Answer:
C
just pray to a higher power the answer is C and move on broh
A small part of a population is relocated to a completely new environment. Since only a few individual are moved, the gene pool in that group is severely reduced. Mark all that apply.
A. Founder Effect
B. Gene Flow
C. Genetic Drift
D. Bottleneck
What is a major potential problem with DNA evidence?
Having too much DNA
Contamination from other sources
Having to heat up DNA to keep it from degrading
Having too many matches to DNA typing
Answer:
Contamination from other sources.
Explanation:
Contrast mechanical and chemical digestion.
Answer:
Chemical and mechanical digestion are the two methods your body uses to break down foods. Mechanical digestion involves physical movement to make foods smaller. Chemical digestion uses enzymes to break down food.
Explanation:
Answer:
While mechanical digestion involves physical movements, such as chewing and muscle contractions, chemical digestion uses enzymes to break down food
Explanation:
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(8.8B) Choose the best description for the Sun compared to all other stars on the HR Diagram?
Answer:
your answer is c
Explanation: the sun is a middle sized star that is average compared to most stars the sun is a yellow/white star wich are uncommon in the gallaxy but can be found in about 40% and under the most common is red dwarfs which take up about 70%
Name and describe all of the weather fronts.
Answer:
Cold, Warm, Stationary, Occluded
Explanation:
Cold- the leading edge of a colder air mass
Warm- the leading edge of warm air mass.
Stationary- In a front of this kind, neither the cold air mass nor the warm air mass is moving.
Occluded- An occluded front occurs when a cold front overtakes a warm front.
Assignment: 02.03 Early Cells Lab report
Answer:
I don't see anything. I think you forgot to attach the picture.
What percent of kittens would have tan fur if a tabby cat is crossed with a black cat?
Answer:
0%
Explanation:
50% of the offspring will be black and 50% will be tabby . So to answer the question, 0% of the kittens will be tan.
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Answer: 1. Primary producers use energy from the sun to produce their own food in the form of glucose, and then primary producers are eaten by primary consumers who are in turn eaten by secondary consumers, and so on, so that energy flows from one trophic level, or level of the food chain, to the next.First,the sun transfers heat to the plants,helping them grow.Animals such as deer who would eat grass,eat plants. 2. Initial Observations What was the health of the ecosystem of Atlas National Park like before wolves were reintroduced? Before the wolves, all species were outside their normal range. The ecosystem was not in equilibrium at all and slowly deteriorating. 3. Wolves are causing a trophic cascade of ecological change, including helping to increase beaver populations and bring back aspen, and vegetation. brainliest?
Explanation:
plssssssss help
No Links
Answer:
right
Explanation:
Which of the following statements is true?
---------------------------------------
Convection currents in the mantle cause the movement of crustal plates.
The earth's core is made of liquid metal.
The earth's crust is very hard and strong. It is difficult for magma to break through.
The presence of sedimentary rocks means the area was once near an active volcano.
Answer:
The presence of sedimentary rocks means the area was once near an active volcano.
Explanation:
The first statement is true the rest are not true
hope it helps
0use a table and write three things: comparision RNA DNA
a. name
b. bases
c. sugar
d. molecule
e. strand
f. functions
please some one help me with this answer?
Answer:
DNA
a. deoxyribonucleic acid
b. adenine, guanine, cytosine, thymine
c. deoxyribose
d. polynucleotide chain
e. mostly double stranded
f. carries genetic information
RNA
a. ribonucleic acid
b. adenine, guanine, cytosine, uracil
c. ribose
d. polynucleotide chain
e. mostly single stranded
f. responsible for coding, decoding, regulation, and expression of genes
Someone please help me I will mark you BRAINLIST I need help with all 6 questions please
Answer: 1. smallpox.
the common cold and different types of flu.
measles, mumps, rubella, chicken pox, and shingles.
hepatitis.
herpes and cold sores. 2. Most notably, viruses differ from living organisms in that they cannot generate ATP. Viruses also do not possess the necessary machinery for translation, as mentioned above. They do not possess ribosomes and cannot independently form proteins from molecules of messenger RNA. 3. All viruses contain nucleic acid, either DNA or RNA (but not both), and a protein coat, which encases the nucleic acid. Some viruses are also enclosed by an envelope of fat and protein molecules. In its infective form, outside the cell, a virus particle is called a virion. 4. All viruses contain nucleic acid, either DNA or RNA (but not both), and a protein coat, which encases the nucleic acid. Some viruses are also enclosed by an envelope of fat and protein molecules. In its infective form, outside the cell, a virus particle is called a virion. 5. A bacteriophage is a virus that attacks bacterial cells. The lytic and lysogenic cycles are two methods of viral replication. In the lytic cycle, the virions produced are released from the host cell whereas in the lysogenic cycle, viral nucleic material are incorporated into host nucleic material and are copied to daughter cells when the host cell reproduces. The common steps in both cycles are given below:
1 Attachment – in this step, the bacteriophage attaches itself to the surface of the host cell so as to insert its DNA into the host cell.
2. Penetration – the virus inserts its DNA into the host cell by penetrating the cell membrane of the host cell.
3. Replication – the viral nucleic material is replicated using the host cell's replication mechanism. 6. Host range is determined by the presence of receptors on the cell's surface. Viruses attach only single species and some attack only particular types of cells within a plant or animal. brainliest?
Explanation:
In the Disease Transmission experiment you will simulate exposure to a "pathogen". Predict whether the rate of exposure (the amount of contacts) will affect an individual’s chance of becoming infected. Explain your reasoning.
Answer:
Yes, the rate of exposure (the amount of contacts) will affect an individual’s chance of becoming infected
Explanation:
Yes, the rate of exposure (the amount of contacts) will affect an individual’s chance of becoming infected
The larger is the rate of exposure to infected individuals, the higher is the probability of a healthy individual to get infected.
Let us suppose , if a healthy individual comes in contact with only other healthy individuals then the individual’s chance of becoming infected will be zero.
How non human organisms impact nature?
