Answer:
1 , and a
Explanation:
5 too
If a paramecium swims from a hypotonic to an isotonic environment, will its contractilevacuole become more active or less?
Answer:
Less.
Explanation:
Its contractile vacuole become less active because of the same concentration of water in both the body and outside environment. Contractile vacuole is responsible for the removal of excess liquid with the help of contraction. In isotonic environment, there is no flow water occur inside or outside of the cell due to the presence of equal amount water in both the environment i. e. cell and outside environment so due to equal amount of water, contractile vacuole become less active.
Which phylogenetic tree shows that lactation--the production of milk to feed young--is a homologous trait in humans, dogs, and bats (but not in birds and lizards)
Answer:
The correct answer is - choice 1 in the image.
Explanation:
In this given question there are four phylogenetic trees are given among these four trees one tree shows the milk production to feed young ones which is mologous case in humans, bats, and dogs as they show lactation whereas lizards and birds do not show lactation.
In these four the first option shows the homologous condition at the second branch where milk production is divided from lizard and birds.
Assuming you started with a saturated hemoglobin molecule, how many molecules of oxygen would need to be released in order for the hemoglobin to be 75% saturated
Answer:
only one oxygen molecule
Explanation:
Hemoglobin (Hb) is an iron-containing oxygen-transport protein localized in vertebrate red blood cells (i.e., erythrocytes). Moreover, the heme group is a component of the Hb protein which is capable of binding or releasing molecular oxygen. Hb consists of four globular protein subunits, and each subunit contains a heme group. This group (heme) binds to an oxygen molecule in a manner that each Hb protein can bind to four oxygen molecules in order to transport them throughout the bloodstream.
It is estimated that 1,000 to 10,000 species go extinct each year. Assume an extinction rate of 5,000 species/ year. How many species have gone extinct while sitting in a 45 minute class?
Explanation:
there are 525600 minutes in a year. when you divide that by 11,680 you get 45 minutes. I could be wrong, but I believe the answer is 0.4280821
Which human activity would help reduce the amount of carbon dioxide in the atmosphere
Answer:
Burning coal
Explanation:
The emissions of carbon dioxide would reduce because then they will consume less gasoline. Instead of coal burning, this would reduce the overall concentrations of greenhouse gas emissions and generate energy from wind.
Groups of animals based on covering
of animals
body covering like fur , feature and scale can help us to decide to which group an animal belong
Grade 4-5:
Describe the structures and functions of the brain including the
cerebellum, cerebral hemispheres and medulla oblongata
Answer:
Cerebral hemispheres: The cerebrum's outer layer, it is split into two hemispheres and is highly folded. These two hemispheres make up the cerebral cortex. This controls most of our senses, intelligence, personality, conscious thought and high-level functions, such as language and verbal memory.
Cerebellum: Controls balance, co-ordination of movement and muscular activity.
Medulla oblongata: Controls unconscious activities such as heart rate and breathing rate.
Hypothalamus: Regulates temperature and water balance within the body.
Explanation:
The cells that form the lining stomach most likely form _________ since they produce secretions and protect the stomach.
1) Muscle tissue
2) Connective tissue
3) Epithelial tissue
4) Nervous tissue
Answer:
1) epithelial tissue
Explanation:
Partietal cells are in the stomach and they form epithelial tissue
Which scenario is an example of a scientific way of thinking?
A. A scientist writes a play that illustrates the challenges monarch
butterflies face on their long, yearly migration.
B. A scientist collects monarch butterfly specimens from each part
of their life cycle and creates a display.
C. A scientist observes the different parts of the life cycle of
monarch butterflies and collects detailed descriptions.
D. A scientist talks to various organizations about the importance of
preserving habitats vital to the survival of monarch butterflies.
Answer:
C To make observations
Explanation:
you need to form questions,making hypothesis and analysing the data
Answer:
C. A scientist observes the different parts of the life cycle of
monarch butterflies and collects detailed descriptions.
Explanation:
Apex
Genetic Engineering has many exciting benefits but also some potential risks.
True
Or false
Answer:
True
Explanation:
Answer:
True
Explanation:
Many Genetic Engineering jobs have good pay-out or help the world, but sometimes they can be dangerous.
Which type of joints allows movement
Answer:
The correct answer would be - synovial joints.
Explanation:
Synovial joints are the joints that allow bones to move as these joints are able to great movement freely of the three structural joints. These joints have synovial fluid which helps and enabling the structures of the joints to move smoothly against each other.
They also called diarthroses which means freely movable. Ball and socket joints is a type of synovial joint that allows movements in all direction with help of muscles attached to it. Hip joint and Shouder joint are examples of such joint.
Answer:
Synovial joints
Explanation:
Synovial joints achieve movement at the point of contact of the articulating bones.
Synovial joints allow bones to slide past each other or to rotate around each other. This produces movements called abduction (away), adduction (towards), extension (open), flexion (close), and rotation.
Food production and food availability affect millions of people worldwide. What are supporting arguments that it is not to the advantage of any group to provide food to others?
Answer:If increases in supply do not keep pace with growth in demand, food prices rise, attracting resources into food production. If supply grows faster, food prices and farm incomes fall, driving resources out of agriculture. Resources may not move fast enough to correct imbalances.
Explanation:
Answer:
Food production and availability is a problem for many people throughout the world. Many people try to help this problem by trying to provide food for those in need, but this isn't a real advantage to anyone. When people buy more of one a product to donate, it causes an increase in demand that the supply may not be keep up with causing the prices to increase, making it harder for everyone to afford it Even if the supply increases but then produces more than demanded the prices for the particular product will drop, resulting in the farmers not being paid enough, or growing more could lead to the land losing resources faster than normally.
Explanation:
HELPPP!!!!! this is for biology and its the stages of cell reporduction
identify the main characteristerics of cells
Answer:
mitochondria, ribosomes, nuclei, golgi bodies, cell walls, cytoplasm...
Explanation:
What do the layers in this sedimentary rock reveal?
sedimentary rock showing lines of different colored rock formed over time
Public Domain
Question 1 options:
Why the dinosaurs all died
How the landscape changed over time
When we can expect the next earthquake
What the temperature will be in the future
Answer:
How the landscape changed over time
Explanation:
Why is meiosis important for organisms?
It creates gametes and allows for genetic variation among organisms.
It produces genetically identical cells.
0 It provides a means of asexual reproduction.
O It allows for cell and tissue repair
The world has been through 5 mass extinction events. We lost over 50% of the species on the planet
each time they happened. How do you think the Earth would be different if we did not have any
extinction events?
Answer: yes because 50% more palnts and animals would be alive.
Explanation: no cap
Hey yall you don't know me but can someone help ill do anything
Answer: I believe the answer is D because I know that you can't kill a eagle in the U.S. because it is a protected species.
Describe an experiment you would perform to test a proposed chloroplast-targeting signal sequence. Be specific about the type of cell and the proteins you would use. Describe the results you would expect if the sequence is indeed a chloroplast-targeting signal.
Answer:
I would fuse the gene encoding the protein carrying the putative chloroplast-targeting signal sequence with the gene encoding Green Fluorescence protein. The GFP-tagged target protein enable to study the expression of the putative chloroplast localization signal sequence and its final cellular localization
Explanation:
The Green Fluorescence protein (GFP) is a protein widely used in molecular biology to investigate the expression of specific genes and then track the movement of proteins in living cells. This protein also can be used as a cell marker and to identify protein-protein interactions. When GFP is excited to a given wavelength (excitation peak 395 nm), it emits green light (emission peak 509 nm), thereby the expression/localization of the GFP-target fusion constructs can be evidenced by using a fluorescence microscope.
All you need is on the photo
Answer: B
Explanation:
When immigration into an area is higher than emigration out and with other factors kept constant, you will have a situation where population will increase.
This is the case in the point of the graph labelled B. We can see a rise in population so immigration must be more than emigration. In the other points, the population is reducing which means that more orca whales are leaving than coming in.
Lipids commonly contain fatty acids. What are the two parts of a fatty acid? Check the correct answers below. amino group long chain of carbon and hydrogen carboxyl group R group nucleotide
Answer:
long chain of carbon and hydrogen
carboxyl group
The correct choices are - long chain of carbon and hydrogen and carboxyl group as fatty acid have long chains of hydrocarbons with carboxyl group makes it acid.
A fatty acid is an aliphatic chain with carboxylic acid that can be either saturated or unsaturated. Fatty acids make the lipid membrane with glycerols. A fatty acid consists of
A long chain of an even number of carbon atoms and hydrogen atoms along the length of the chain at the end of the chainA carboxyl group (―COOH) at the other end.The carboxyl group makes it an acid (carboxylic acid).Thus, the correct among the given choices are - long chain of carbon and hydrogen, a carboxyl group.
Learn more about fatty acids:
https://brainly.com/question/10643627
Help please !
A strand of messenger RNA (MRNA) has the nucleotide
sequence GAA. This corresponds to an amino acid called leucine.
Which three nucleotides does the transfer RNA (TRNA) carrying leucine have?
Select one:
1. CGG
2.CUU
3.AGG
4.ACC
Answer:
2. CUU
Explanation:
i did some research
CUU are the nucleotides which transfer RNA carrying leucine. So, the correct option is (B).
What is RNA?RNA stands for Ribonucleic acids which is present in all living cells and have structure similarities to DNA.
It is a single stranded structure. It has a backbone made up of alternative phosphate group and the sugar ribose. Sugar is attached to one of the four bases. They are adenine (A), uracil (U), cytosine (C) or guanine (G).
There are three types of RNA which exist in cells messenger. They are messenger RNA (mRNA), ribosomal RNA (rRNA) and transfer RNA (tRNA).
1. Messenger RNA (mRNA) is translated into a polypeptide.
2. Transfer RNA (tRNA) will bind an amino acid to one end and has an anticodon on the other.
3. Ribosomal RNA (rRNA) helps facilitate the bonding of amino acids coded for by the mRNA.
Some of the RNAs are involved in gene expression regulation. As per the Central dogma of Molecular Biology, main role of RNA is to convert the information which is stored in DNA into proteins through the process called transcription.
Thus, CUU are the nucleotides which transfer RNA carrying leucine. So, the correct option is (B).
Learn more about RNA, here:
https://brainly.com/question/25979866
#SPJ2
Genes A and B are 10 map units apart and genes B and C are 20 map units apart, with gene B located between genes A and C. What would be the expected amount of double crossovers for a trihybrid test cross
Answer:
2% of the progeny will be double crossovers for the trihybrid test cross
Explanation:
By knowing the positions of genes, we can estimate the distances in MU between them per region.
Genes A and B are 10 map units apart (Region I)Genes B and C are 20 map units apart (Region II)Genes A and C are 30 map units apart----A-------10MU--------B-------------20MU-------------C---
Region I Region II
We can estimate the recombination frequencies by dividing each distance by 100.
• recombination frequency of A-B region = 10MU / 100 = 0.10
• recombination frequency of B-C region = 20MU / 100 = 0.20
Now that we know the recombination frequencies in each region, we can calculate the expected double recombinant frequency, EDRF, like this:
EDRF = recombination frequency in region I x recombination frequency in region II.
EDRF = 0.10 x 0.20 = 0.02
2% of the progeny will be double crossovers for the trihybrid test cross
Climatology study cumulative weather data. They analyze the average_______and average _______. Temperature,precipitation. Snow,rain. Rain,sun
Answer: temperature, precipitation
Explanation: I just took the test and got it right
Which explanation describes why males are more likely to exhibit sex-linked disorders than females? Males have two X chromosomes that amplify all sex-linked disorders. Males have one X chromosome on which most sex-linked disorders are located. Males have only one functional sex chromosome on which all gender traits are located. Males have multiple sex chromosomes that mutate causing sex-linked disorders to become visible.
Answer:
males have one X chromosome
Explanation:
The explanation that describes why M are more likely to have linked disorders than W is that M have an X chromosome on which most linked disorders are located.
InheritanceLinked inheritance refers to genes located on chromosomes that are involved in trait determination.
In humans, the male chromosome Y has few genes. On the other hand, the female chromosome X has a large number of genes involved in the determination of various characteristics.
XY chromosomes have small homologous regions at their ends. Thus, there is practically no recombination between their genes.
When the altered gene is on the X chromosome. This type of inheritance has a recessive pattern.
It is the maternal inheritance. In this case, sons inherit X chromosome genes only from their mother. Meanwhile, F daughters inherit one from the father and one from the mother.
The manifestations will be present because they have only one X chromosome, that is, they do not have any normal gene for that characteristic.
With this information, we can conclude that the manifestations will be present in men, as they have only one X chromosome.
Learn more about Chromosome in https://brainly.com/question/296477
How does energy move through living systems?
A. Energy can be created by organisms and can be passed on if it is not used by that organism
B. All of the energy is used up by organisms as they move, grow and reproduce so less energy is available for the next organism in the food chain
C. Energy is transformed and/or lost as heat as it passes from one organism to the next, but the total amount always stays the same
D. Energy is created during photosynthesis
Answer:energy is produced during photosynthesis. energy is used by the photosynthesiser or lost as heat, with the remainder available to the next organism in the food chain.
Explanation: self explanatory
what molecule is energy stored in the process of respiration
Answer:
Hope the above picture might help you :)
During _____ women experience rapid contractions around the vagina that may or may not produce a vaginal secretion or ejaculate.
All you need is on the photo
Answer:
B
Explanation:
photosynthesis takes in CO2 and gives O2, so if it were photosynthesis the lines would be swapped. cellular respiration takes in O2 and expels CO2.
Answer:
B Cellular Respiration
Explanation:
In Cellular Respiration organisms use Oxygen and give out Carbon dioxide.
In Photosynthesis plants use Carbon dioxide and give out Oxygen.
I need someone to answer 11
Answer:
Explanation:
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