Answers
Answer:
Pretty sure it’s centromere sorry if I’m late Ik quizzes is timed :(
Explanation:
Related Questions
Why is it believed that fossil fuels, such as coal, store energy from the sun?
a Coal must be mined.
b Coal was formed by immense pressure.
c Coal is heated by the sun.
d Coal is the fossilized remains of green plants.
Answers
Answer:
The answer is d
Explanation:
Because
Answer:
D is correct
Explanation:
Which of the following two statements support the claim that viruses are nonliving?
a
a. Viruses evolve
b
b. Viruses contain a genetic code
c
c. Viruses lack machinery for reproduction
d
d. Viruses contain structures made of proteins
e
e. Viruses cannot make their own chemical products.
Answers
Answer:
c. Viruses lack machinery for reproduction
Explanation:
brainiest plz
Answer:
B. Viruses cannot lack machinery for reproduction.
Explanation:
Viruses cannot reproduce without a host. However, once they have their host they insert their own genetic codes (protien), and they replicate.
What determines the rate of nutrients and waste are exchanged from the cell and the environment?
A. Surface Ratio
B. Milliliters
C. Surface Area to Volume Ratio
D. Volume
Answers
Answer:
C.
Explanation:
Volume, no
Milliliters , no
Surface Ratio, come on
The rate of nutrients and waste are exchanged from the cell and the environment depends on surface area to volume ratio.
What is a surface area to volume ratio?The amount of square meters of surface area per unit volume is known as surface area to volume ratio.
What is the relationship between surface area to volume ratio and size of the cell?The surface area to volume ratio becomes smaller as the size of a cell increases.
What is the relationship between surface area to volume ratio and exchange of materials?The exchange takes more time when the surface area to volume ratio is small.
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Which layer of cells has the greatest number of chloroplasts? Explain the
advantage of having more chloroplasts in this position.
Apart from the presence of chloroplasts, describe three ways in which a leaf is
adapted to carry out photosynthesis.
Pls
Answers
Chloroplasts are plant cell organelles that convert light energy into relatively stable chemical energy via the photosynthetic process. By doing so, they sustain life on Earth. Chloroplasts also provide diverse metabolic activities for plant cells, including the synthesis of fatty acids, membrane lipids, ...
The leaf has guard cells. These allow the stoma to be opened/closed which allows the flow of carbon dioxide into the leaf/oxygen out of the leaf. The leaf also has xylem cells which provides water for photosynthesis. The mesophyll layer is also adapted to provide efficient gas exchange of carbon dioxide.
Please please help...what will happen to these glands if they strike?
Answers
Answer:
gurl it would've been gangsta
Explanation:
I would be like what organs is this?
it would make you incomplete like
Under it, it may get worst since our stomach is made of acids, foods that we've swallowed may cause inflammation inside, our brain would've stop doing its thing, and lastly reproductive glands....Yes goodluck with that you might wanna get some transplant:>
Many antelope species, including hartebeest, wildebeest, impala, Thompson's gazelle, and others, live on the African plains and eat many of the same food plants. An increase in the population of any of these species leaves less food for the others. This is an example of what type of relationship?
Answers
Answer:
Competition
Explanation:
Competition occurs when many organisms are in search for the same, limiting resource this include food, water,space.
The use of this limited resource by one species decreases availability to the other population especially when there is an increase in population the rate of competition is very high.
Competition reduces the fitness of all the organism and can either be interspecific which is among the same organisms or between different species.
When DNA Is duplicated from mRNA which DNA, mRNA uses a __ nucleotide instead of T.
If the mRNA sequence is GUACUGUAC, what is the DNA Sequence? __
Please and thank you
Answers
Answer:
1. When DNA is duplicated from mRNA which DNA, mRNA uses a U nucleotide instead of T.
2. If the mRNA sequence is GUACUGUAC, the DNA Sequence is CATGACATG.
Explanation:
1. The only thing that changes from a DNA sequence to an RNA sequence is that the thymine (T) in DNA is changed to Uracil (U) in RNA.
2. There should be no Uracil (U) in a DNA sequence–– only ATCG. Just matching with the given pairings.
G can transcribed to C.
C can be transcribed to G.
A can be transcribed to T.
U can be transcribed to A.
c. if you begin with one tube of e. coli, how many different types of bacteria do you expect to see in the 4th quadrant?
Answers
If we begin with one tube of E. coli, we will only see one type of bacteria in the 4th quadrant, if any type of contamination does not occur.
To observe the colonies of a bacteria in form of quadrants, we need to follow the below-mentioned steps:
To culture bacteria, we need to transfer it to a petri dish.A petri dish is coated with a layer of agar, a jelly-like substance obtained from red algae that helps in culturing bacteria.Then the required bacteria, which is E. coli in our case is collected using a sterile rod and put on the petri dish.After that, the petri dish is heated to increase the growth of bacteria and also to ensure equitable distribution of bacteria in all four quadrants.After following the above-mentioned steps we have to cover the petri dish to avoid contamination and leave it undisturbed for a few days.When we observe the dish after a few days, we will see the bacterial colonies growing in it, as shown in the adjoining image.Thus, if we begin with one tube of E. coli, we will only see one type of bacteria in the 4th quadrant, if any type of contamination does not occur.
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2. David is growing algae in a closed bottle for an experiment. The bottle is half full of water and half full of air. David floats the bottle in a pond for three weeks. At the end of the three weeks, David notices that lots of algae grew, but the bottle did not
sink lower in the pond.
Why didn't the bottle of algae get heavier during the experiment?
A. Tiny animals in the bottle ate the growing algae.
B. The sides of the bottle got lighter as the plastic degraded.
C. The bottle has a leak, which made it lose water to the pond.
D. The growth of the algae came from the air and water in the bottle.
Answers
Answer:
The answer Is D
Explanation:
The growth of the algae came from the air and water in the bottle.
The statement (D) is correct. The growth of the algae came from the air and water in the bottle.
What is an algae?Algae is an informal term for a large and diverse group of photosynthetic eukaryotic organisms. It is a polyphyletic grouping that includes species from multiple distinct clades.
Moreover, algae are photosynthetic creatures. They are neither plant, animal or fungi. Many algae are single celled, however some species are multicellular. Many, but not all of red and brown algae are multicellular.
Therefore, algae are defined as a group of predominantly aquatic, photosynthetic, and nucleus-bearing organisms that lack the true roots, stems, leaves, and specialized multicellular reproductive structures of plants.
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Mitosis, a stage in the cell cycle, is important for what reason?
a. division of the nucleus b. removal of cancer cells
c. synthesis of DNA d. division of cytoplasm
Answers
Answer:
A. division of the nucleus
Explanation:
Mitosis is a biological process that the cells of all organisms go through in order to replicate and reproduce. It is part of the cell cycle, which is made up of G1, S, G2, and M (mitosis). In G1, the cell is growing; in S, the DNA of the cell is synthesized, or replicated, so we know choice C is wrong; in G2, the cell is being prepared for mitosis; and finally, in M, the cell actually undergoes cell division.
So, we are looking for an answer choice that involves division: either A or D.
At the end of mitosis, there's an additional process called cytokinesis that actually divides the cytoplasm, so the answer can't be D.
Thus, the answer is A.
Josh and his family always rent a beach
house for summer vacation. One
afternoon, Josh and his Dad took the
boat out and when they returned pulled
up their boat on the beach and went in
to have lunch. When they returned, the
beach was covered in water and the
boat was floating offshore. What is a
likely explanation?
Answers
Answer:
The tide had probably rolled in and covered the beach with water and had swept the boat away offshore.
(I'm so sorry if this is wrong)
Hope this helps!
Answer:
High Tide
Explanation:
It seems from the question that after they returned, the beach was covered with water, High tide explains it because the tide is at it’s highest point at that time. Since the water is at it’s highest point, the boat was washed away and the beach was covered with water.
Tell me if this is wrong!
Do not add any harmful comments please. You have no right to bully someone who answers questions that you don’t know.
What would happen if you did an experiment in which the iodine solution was placed in a baggie, and the starch solution was in the beaker?
Answers
If the iodine solution was placed in a baggie and the starch solution was in the beaker, and the baggie was then submerged in the beaker, a specific chemical reaction called the iodine-starch reaction would occur.
The iodine-starch reaction is a well-known test used to detect the presence of starch in a solution. Normally, when iodine solution (iodine dissolved in water) comes into contact with starch, it forms a dark blue or black color complex.
This reaction is due to the formation of an inclusion complex between the iodine molecules and the helical structure of starch.
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The brain coordinates the __________ to a stimulus. What word completes this sentence?
Answers
Different kinds of receptors in the skin and organs are capable of recognizing both internal and exterior inputs. Neurons in the sensory system send this data to the brain.
What are the Sensory system?Assembling sensory neurons create sensory nerves, which pass through the spinal cord to the brain.
The brain and spinal cord make up a person's central nervous system (CNS). When a receptor is activated, a signal travels through the neurons, or nerve cells, to the brain.
The effector receives nerve impulses from the brain, which the brain then uses to coordinate the reaction.
A sensory system is made up of neural networks, sensory neurons (including sensory receptor cells), and brain regions involved in sensory perception.
Therefore, brain coordinates the sensory responses to a stimulus.
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Planets, stars, and galaxies are composed of different forms of matter which material makes up the planets in Earth's solar system?
Answers
Answer:
they all have solid cores of rock, metal, and maybe even ice, but these planets are totally enveloped in thick atmospheres of gas. Hydrogen and helium (the two lightest elements) make up most of the gases in the atmospheres of these planets
Explanation:
internet
If astronomers discovered a new inner planet in the solar system, which characteristic would it most likely have?
A: large size
B: gaseous composition
C: many moons
D: fast revolution
Answers
Answer:
D: fast revolution
Explanation:
As the inner planets rotate around the Sun much faster than the outer ones, the new inner planer would have a fast revolution.
The closer the planet is to the star, the faster is its revolution. Also, the inner planets are smaller, with less density which helps them rotate faster.
Answer: D. fast revolution
Explanation: i just did it
Which of the following are examples of processes in your body that we must keep
balanced?
A. Blood sugar levels, heart rate, wrinkles on
our skin, and brushing our teeth
B. Body temperature, finger nail growth and
food intake
C. Body temperature, blood sugar levels, and
blood pressure
D. None of the above
Answers
Answer:
C
Explanation:
A is wrong because brushing our teeth is not a process in your body
B is also wrong because finger nail growth isn't a must you keep balanced and isn't even a process in the body
D is wrong because there is an answer and that Answer is C
Your Welcome
7. Products like "Tums" neutralize stomach acid because Tums is a a. neutral. b. base. c. acid.
Answers
Answer:
(B) Products like "Tums" neutralize stomach acid because Tums is a base.
Explanation:
If the product neutralizes an acid, that means it must be a base. Acid + Base = Neutral. If you were to consume an product that is acidic, the stomach will end up being overly acid, which is unsafe for the body. If you were to consume a product that is neutral or "normal", the product would not do as much to neutralize the stomach acid, compared to a more basic pH. Tums has a main ingredient of calcium carbonate, CaCO3, a base. This ingredient helps regulate the pH levels for your stomach so that it does not become too acidic.
What structures are present in an animal cell but not in a plant cell
Answers
Which of the following is a safety hazard?
A.
workplace bullying
B.
racial harassment
C.
radiation
D.
stress
E.
confined spaces
Answers
Answer: Exposure to very high levels of radiation, such as being close to an atomic blast, can cause acute health effects such as skin burns and acute radiation syndrome (“radiation sickness"). It can also result in long-term health effects such as cancer and cardiovascular disease.
A plate moves south at a rate of 2 cm/year. How many meters south from its original location will the plate be in 4,000 years? 8,000 meters south 4,000 meters south 200 meters south 80 meters southWhich source of evidence did Wegener use to support his theory of continental drift? fossils magnetic fields satellite mapping warm equatorial climates
Answers
Answer:
1. 8000 meters
2. Fossils
Explanation:
1. Rate of southern movement of the plate = 2 cm/year.
In 4000 years, the plate will move a distance of 4000 years * 2 cm/year = 8000 meters
Therefore, the plate will move a distance of 8000 meters south in 4000 years.
2. Wegener in supporting his theory of continental drift used fossils, geologic and glacial evidences. He compared the fossils found in different continents and argued that the presence of fossils of certain animal fossils such as the Lystrosaurus which are found in antarctica, India and South Africa indicates that the continents drifted apart as the Lystrosaurus could not have swam across the ocean to get to these different continents. Also, using geologic evidence by comparing rock structures on opposite sides of the Atlantic ocean, he determined that there were similarities between the rock strata of the Karroo system of South africa with the Santa Carina system in Brazil.
How does a Calorie on a food label relate to a calorie that is produced in cellular respiration?
Please explain thoroughly. I genuinely want to understand this topic & I’m so confused.
Answers
Answer:
Photosynthesis removes carbon dioxide from the atmosphere, and cellular respiration puts it back. Photosynthesis releases oxygen into the atmosphere, and cellular respiration uses oxygen to release energy from food. ... The Calorie used on food labels is equal to 1000 calories
Explanation:
I hope this helps:)
Which plastids do not contribute to the color of a plant?
a chlorophyll
b chromoplasts
c chloroplasts
d leucoplasts
Answers
Compare the two nuclei that form as a result of mitosis. AWARDING 50 POINTS, I WILL REPORT ANSWERS THAT ARE USING ME FOR POINTS.
Answers
Answer:
Both nuclei has similar shape and size.
Explanation:
The two nuclei are similar in size and appearance which is formed as a result of mitosis. Mitosis is a type of cell division in which a parent cell divides and produces two daughter cells that are identical to each other in size and shape. When the daughter cells formed the parent nuclei is divided and half part of nucleus is present in each daughter cell.
irf4 transcription-factor-dependent cd103 cd11b dendritic cells drive mucosal t helper 17 cell differentiation
Answers
The discussion of irf4 transcription-factor-dependent cd103 cd11b dendritic cells drive mucosal t helper 17 cell differentiation is given in the below paragraph-
The predominant migratory DC population in the small intestinal lamina propria (SI-LP) is composed of CD103(+)CD11b(+) dendritic cells (DCs), although it is yet unknown what these cells do in vivo. Here, we show that intestine CD103(+)CD11b(+) DC survival required IRF4 to function (IRF4). Mice with a DC loss in Irf4 showed decreased numbers of helper T 17 (Th17) cells that secrete IL-17 in the gastrointestinal tract and failed to support Th17 cell development in draining mesenteric lymph nodes (MLN) after immunization. Both CD103(+)CD11b(+) MLN DCs and DC-derived IL-6 were selectively decreased in the latter. Immunized Il6(-/-) mice were unable to sustain Th17 cell development in MLN in vivo, although CD103(+)CD11b(+) MLN DCs were able to do so in vitro.
Findings collectively point to a critical function for IRF4-dependent, IL-6-producing CD103(+)CD11b(+) DCs in intestinal Th17 cell development.
What is cell differentiation?The transformation of a stem cell from one type to a differentiated one is known as cellular differentiation. Usually, the cell transforms into a more focused kind. Multiple instances of differentiation take place while a multicellular creature develops from a straightforward zygote to a complex system of tissues and cell types.
As adult stem cells divide and produce completely differentiated daughter cells during tissue repair and normal cell turnover, differentiation continues throughout maturity. In response to antigen exposure, some differentiation takes place. Size, shape, membrane potential, metabolic activity, and signal responsiveness of a cell all undergo significant changes during differentiation.
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Which One help!!!!
DNA and RNA differ in the following way(s):
A) DNA has a phosphate and RNA does not
B) DNA and RNA have different sugars
C) DNA and RNA have different nucleotides
D) All of the above
E) B and C
Answers
Answer:
E) B C
DNA has deoxyribose sugar
RNA is ribose Sugar
DNA has ATGC
RNA has AUGC nucleotides
Explanation:
In an aerobic cell, active transport is most directly affected by damage to
the
Mitochondria
chloroplasts
Ribosomes
centrioles
Answers
Answer:
mitochondria
Explanation:
aerobic is active and energy is produced in the mitochondria so if the mitochondria was damaged it would affect the active transport
In an aerobic cell, active transport is most directly affected by damage to the - Mitochondria as it provides energy for active movement.
Active transport is a movement of particles through the cell membrane against the gradient, or particles too large to move, therefore, they require additional energy to move such substances.
Cellular respiration provides energy for active transport.It takes place in the mitochondria, therefore, cells that perform active transport have many mitochondria.the molecules are moving against their concentration gradient.If mitochondria are damage in a cell there will be no energy formation and as active transport requires energy this process will be affected directly.
Thus, the correct answer is - mitochondria.
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HELP ME PLEASE FAST (giving points and brain list)
Answers
Answer:
3rd option...........
What is a type of active transport which allows small droplets of water into
the cell?
o Facilitated Diffusion
o Pinocytosis
O Exocytosis
o Phagocytosis
Answers
•lol first person to answer gets brainliest
The ________ Is The Powerhouse Of The Cell
Answers
Answer: mitochondria
physical and chemical changes in the stomach
Answers
Answer:
Muscular movement in the stomach causes food particles to become even smaller. This is a physical change. Enzymes and digestive juices in the stomach work to chemically break down proteins into amino acids. This is a chemical change.
Explanation:
hope this helps :D pls mark brainliest :D