Answer:
Where's the diagram
Explanation:
????????
how long has life been on earth?
Answer:
3.5 billion years but some say 4 billion.
during which phase of meiosis does crossing over of chromosomes occur
Answer:
prophase 1 and metaphase
Explanation:
:)
Please help and please no links
Cells in the leaves of plants contain specialized structures called
chloroplasts. How are chloroplasts related to the function of the leaf cells?
A. Chloroplasts transport water and nutrients through the plant.
B. Photosynthesis occurs in chloroplasts.
C. Plant reproduction occurs in chloroplasts.
O
D. Chloroplasts absorb substances from the soil.
Answer:
B
Explanation:
Plants use photosynthesis from chloroplasts to make food
Examine the Punnett square below.
B
B
B
BB
BB
b
Bb
Bb
Which of the following choices gives the alleles of the parents shown here?
BB and BB
BB and Bb
Bb and Bb
Bb and bb
Answer:
Hi, there the answer is BB and Bb
Explanation:
By looking at the Punnett square, the alleles of the parents are BB and Bb. So, the correct option is B.
What do you mean by Alleles?Alleles may be defined as the ultimate combination of one or two or more alternative forms of genes.
The Punnett square which is described below clearly demonstrates the allele BB on the horizontal side, while the alleles Bb on the vertical side.
Therefore, the correct option for this question is B.
To learn more about the Punnett square, refer to the link:
https://brainly.com/question/3522181
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What type of transport was shown in the second animation?
A. active transport with the help of transport proteins
B. passive transport by simple diffusion across the membrane
C. passive transport by facilitated diffusion with the help of transport proteins
Answer:
C. passive transport by facilitated diffusion with the help of transport proteins
Explanation:
The electron transport chain (shown in the second animation) establishes a proton gradient across the inner mitochondrial membrane. ATP synthase uses the energy stored in the proton gradient to catalyze the synthesis of ATP. The molecular machinery involved in this process converts chemical energy to mechanical energy and provides a great example of the relationship between the structure and function of macromolecules.
Answer:
C. passive by facilitated diffusion with the help of transport proteins
Explanation:
Passive transport is a type of membrane transport that does not require energy to move substances across cell membranes.
What is the measured output force of a pulley system if the Mechanical Advantage is 0.48 and measured input force is 10N?
Answer:
Output force is 4.8 N
Explanation:
A pulley is a simple machine made of a grooved wheel with a rope or cable wrapped around it. Pulleys are used in the transmission of energy or motion.
The input force is also known as the applied force while the output force is the force exerted on an object by a simple machine.
The mechanical advantage of a pulley is the ratio of the output force to the input force.
Mechanical advantage = output force / input force
Substituting:
0.48 = output force / 10
Output force = 4.8 N
what if you have an 66% in a class and you fail your final exam that is 15 % of your grade, then what percentage would you have after your final exam?
whale
this has to be 20 characters
Answer:
Passwords must contain:
a minimum of 1 lower case letter [a-z] and
a minimum of 1 upper case letter [A-Z] and
a minimum of 1 numeric character [0-9] and
a minimum of 1 special character:~
at least 1 upper case, numeric, and special character must be EMBEDDED somewhere in the middle of the password, and not just be the first or the last
Deforestation occurs when a forested area is converted into a non-forested area. This conversion could be due to the need for construction or expansion of a town, the creation of farmland, or logging.
How would deforestation likely affect an area?
Answer:
the animals of the forested area will eventually come in the town.
Explanation:
mark as brainiest please
Which of the following is the best definition of a system?
A. a collection that shares the same function
B. The form and arrangement of an object or material.
C. Anything that takes up space and has mass.
D A group of objects and materials that are interrelated.
Answer:
D. A group of objects and materials that are interrelated
You discover a new protist species. It has chloroplasts and vacuoles and moves using a flagellum. How would you classify the way that it gets energy? Is it an autotroph, heterotroph, or both? Explain your answer
Answer:
Autotroph. Autotrophs include plants and some other creatures, vacuoles and chloroplasts are found in plants.
Explanation:
PLANTS! = Autotroph. I don´t even know anymore, it´s been 3 years since I took a basic science class, I am guessing from memory.
What nitrogen base pairs with adenine?
A. Guanine
B. Thymine
C. Cytosine
Answer:
B. Thymine
Explanation:
The thymine pairs with adenine. Thus, option (B) is the correct answer.
Name the activity that takes place in each parts of the digestive system
Mouth-
small intestine-
large intestine-
rectum-
stomach-
esophagus-
Answer:
Mouth: Mechanical digestion
Small Intestine: Chemical digestion
large Intestine: Absorption
Rectum: Egestion or collection of faeces
Stomach: Mechanical AND chemical digestion
Esophagus: Peristalsis
Explanation:
please mark brainliest ❤
[tex]what \: is \: DNA \: \: \: {?} \\ \\ \huge\mathfrak\red{please \: help \: }[/tex]
[tex]\circ \: \: { \underline{ \boxed{ \sf{ \color{green}{Hola\:Venom!}}}}}∘[/tex]
✰ DNA stands for [tex]\sf\purple{deoxyribonucleic\: acid}[/tex].
✰ It is a type of nucleic acid that contains the genetic code of organisms and is also the molecule of heredity in all cells.
✰ DNA is mainly present in the chromosomes in nucleus.
✰ It carries the genetic information that is passed on to the next generation.
[tex]\red{\large\qquad \qquad \underline{ \pmb{{ \mathbb{ \maltese \: \: Mystique35ヅ}}}}}[/tex]
Do homologous structures always have the same function in different organisms?
Answer:
Homologous structures are structures that are similar in related organisms because they were inherited from a common ancestor. These structures may or may not have the same function in the descendants.
My answer uh might not be the one you're looking for or isn't correct ✌
Explanation:
Compare and contrast the concentration of the toxin in
the seaweed, shrimp, small fish and shark
Answer:
?????????
Explanation:
What is the name of this chemical process?
A. cellular respiration
B. photosynthesis
C. diffusion
D. automation
Answer:
A) cellular respiration
Explanation:
(glucose) C6H12O6 and (oxygen) O2 is turned into CO2 (carbon dioxide)
RM.03H]Oil is an important source of energy which sustains modern human lifestyle. Roads, pipelines, mines and other structures must be built when drilling for oil. Which of these is the most likely effect of large scale infrastructural development associated with oil drilling in a location?
lack of oxygen gas
long periods of drought
disruption of animal habitats
decrease in atmospheric temperature
Answer: C
Explanation: Disruption of animal habitats
Which of the following best describes the difference between an adaptation and adapting?
Answer:
Explanation:
Adaption and adaptation are different forms of the same word, and they share all their meanings, which include (1) the act of changing to suit new conditions, and (2) a work of art recast in a new form or medium. But the longer word, adaptation, is preferred by most publications and is much more common
Answer:
C
Explanation: I took the ape x quiz
Where do you think milk gets it matter?
Answer:
cows
Explanation:
it comes out of the utter LOL
Answer:
cows because where else would we get it from
have a good day :)
Explanation:
Using the words "selection pressure" and "fitness", explain how natural selection causes populations to change over time.
Answer:
Environment and competition is the leading cause of evolution. It's an instinct to want to live, but trying to survive is difficult when other animals have the same goal. An ecosystem is a cycle, but every generation of this ecosystem slightly changes, and so do the animals. Every bug that has fitness can start overpopulating the ecosystem, leading to a surge of resources for what preys on the bug. Now bird's population goes up, so do other animal populations. Or the bug becomes an invasive species, and birds are being hunted too often to decrease the population.
In a different scenario, bugs are evolving because of the selection pressure that the environment is giving them. The birds have become better over the generation, and now have a more suited beak to catch the bug off the ground. The bug population maybe be decreasing, but the ones who live through the crisis are populating with bugs that certain gene that helped them out. But it's not over, the bug population isn't declining but it wasn't as big as it was before. The bird will find more ways to find and capture the bugs. But then bugs will keep surviving through the selection pressure and become much harder to find since they figured out camouflage. The bug that was neon yellow was dying since they were easy to see. Now they can range from green to black to hide in the environment. Now the birds are facing the selection pressure, it's a cycle.
(look, im not good at gammar, so you should get this looked at before entering it. I put it through gammarly if that helps.
Distinguish between gaseous exchange and respiration
Answer:
Respiration is the process in which food is oxidized to release energy. Complex organic compounds are converted into simpler ones, e.g glucose into CO2 water and energy released. Gaseous exchange is the diffusion of gases from a region of higher concentration to a region of lower one.
Explanation:
Breathing is the physical process by which air is passed on a gaseous exchange surface i.e. ventilation of the gaseous exchange surface. It involves Inhalation and Exhalation.
Gas/Gaseous exchange is the process whereby gasses diffuse across a gaseous exchange surface. In humans, oxygen diffuses from the inhaled air into the blood and carbon dioxide diffuses from the blood into the exhaled air. The gaseous exchange surface here being the Alveoli.
Respiration is the metabolic process whereby organic molecules are broken down to release energy in the cells. In humans, this process takes place inside the mitochondria of cells. Aerobic respiration requires oxygen whereas qnqerobic respiration takes place in absence of oxygen.
The hemoglobin protein of a human and a frog differ by 67 amino acids. How many amino acids are most likely different between a human and a chimp?
A. none
B. fewer than 67
C. 67
D. more than 67
Answer:
B. Fewer than 67
Explanation:
Humans are much more closely related to chimps than frogs, so the genetic information that codes for their proteins will differ much less.
Based on the evolutionary relationship between humans and chimpanzees, it is highly likely that humans and chimpanzees share a large portion of their genetic material, including the amino acid sequence of hemoglobin. Therefore, it is most likely that the answer is B. Fewer than 67 amino acids are different between a human and a chimp.
What is the hemoglobin of different animals?The hemoglobin protein is a vital protein in both humans and chimpanzees that helps transport oxygen in the blood. While there may be some variations in the amino acid sequence of hemoglobin between humans and chimpanzees, it is expected that most of the amino acids will be the same since hemoglobin performs a critical function in both species. Additionally, any differences in the amino acid sequence of hemoglobin between humans and chimpanzees are likely to be fewer than 67, as this is the number of differences between humans and frogs, which are much more distantly related species.
Hence, it is most likely that the answer is B. Fewer than 67 amino acids are different between a human and a chimp.
Learn more about the hemoglobin of different animals here.
https://brainly.com/question/3608611
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What gives your characteristics?
A. RNA and carbohydrates
B. DNA and Proteins
C. Biological catalysts
Answer:
B. DNA and Proteins
Explanation:
mark brainliest
Answer:
What gives your characteristics? DNA and Proteins.
Explanation:
Have a great summer.
What is the correct levels of organization from smallest to largest?
A. organs. tissue, cells, organ system
B. cells, tissues, organs, organ system
C. cells, organs, tissues, organ system
D. tissues, organ system, organ, cells
Answer:
B. cells, tissues, organs, organ system
Explanation:
This is the correct levels of organization from smallest to largest. Hence, option (B) is the correct sequence.
is this wrong?
[extra characters]
Answer:e takes place alveoli in the lungs and the capillaries that envelop them
Explanation:
Answer:
yes, your answer is right i guess. It looks right to me
Help plz and thank you
Answer: THAT IS SO LONGGGGGGG WE CANT DO IT BUT GOOD LUCK!!!!!!!!!!!1
Explanation:
Part E
Explain your justification for the changes in trait distribution between years 1 and 10. What do you think will happen to the population by year 15?
Answer:
It will continue to rise.
Explanation:
Genetic variation results in the changes in trait over the period of time. Hence, traits do change over the years, but it is a gradual process. The population will become more stable due to successful traits.
What is genetic variation?Genetic variation refers to the changes in the genotype of an individual. It imparts stability to the population. Genetic variation results from meiotic cell division where recombination of gene produces genetic exchange of heredity material.
Those traits which are successful in nature that means those variations which provide stability to the organism in any environment are favoured. Organisms with such variations adapt, survive and further reproduce to continue their existence. Such traits are transmitted to the progeny as well.
Thus, gradual accumulation of changes in traits contribute to a more stable population over the span of years.
Therefore, changes in traits are important in determining the track of evolution on earth.
Learn more about traits, here:
https://brainly.com/question/1463051
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1. What part of the body covers the windpipe when you swallow? diaphragm O bronchi O tongue O epiglottis
Answer:
diaphram or Bronchi
Explanation:
Answer:
epiglottis
Explanation:
I took the test
what are the difference between blood in the renal artery and blood in the urethra
Answer:
Renal Veins carry filtered blood from the kidneys to the posterior vena cava. Renal Arteries carry unfiltered blood from the aorta to the kidneys. The arteries are obscured by the renal veins in this image; they are dorsal to the renal veins.