Answer:
The change from the oblong skull and protruding face of ancient humans (right) to the modern rounder skull and retracted face is associated with a sharper bend in the floor of the brain case (lower left), thought to be caused by increased brain size.
Explanation:
Give brainlist me please
The change from the oblong skull and protruding face of ancient humans (right) to the modern rounder skull and retracted face is associated with a sharper bend in the floor of the brain case (lower left), thought to be caused by increased brain size.
Homologous chromosomes may exchange segments; this is called crossing over. Crossing over increases genetic variability. When does crossing over occur?
Question 2 options:
Meiosis II
Mitosis
Both mitosis and meiosis--crossing over may occur at any time during the cell cycle.
Meiosis I
Question 3
In order for meiosis to create four, genetically different gametes, DNA replication must occur. Which of these best describes when DNA replication would occur?
Question 3 options:
prior to meiosis II
prior to meiosis I and meiosis II
prophase I in meiosis I
prior to meiosis I
Question 4 (1 point)
The embryo's development as seen here represents which processes in the development of any multicellular organism?
Question 4 options:
meiosis followed by mitosis.
mitosis and cell differentiation.
protein synthesis followed by meiosis.
meiosis and cell differentiation.
Question 5
Why do some organisms reproduce aseggsually?
Question 5 options:
To rapidly produce like offspring
To increase genetic diversity
To have a variety of offspring at the same time
To get rid of genetic problems while reproducing
A) Crossing over occurs in : Meiosis I ( D )
B) DNA replication would occur : Prior to meiosis I and meiosis II ( B )
C) The embryo's development represents ; meiosis and cell differentiation ( D )
D) Some organisms reproduce aseggsually ; To rapidly produce like offspring
What is Crossing over and DNA replication
Crossing over involves the swapping of genetic materials, and it occurs in prophase I of meiosis before meiosis II the crossing over of genetic materials are over. while DNA replication is the process whereby DNA make an exact copy of itself during the process of cell division and this process occurs prior to meiosis I and meiosis II
The development of an embryo in the missing diagram represents meiosis and cell differentiation.
Hence we can conclude that the answers to your questions are as listed above.
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which organelle
produces the cells energy
Here is a Answer to your question:
Mitochondria
Mitochondria are membrane-bound cell organelles (mitochondrion, singular) that generate most of the chemical energy needed to power the cell's biochemical reactions. Chemical energy produced by the mitochondria is stored in a small molecule called adenosine triphosphate (ATP).
I am sorry if this was not helpful
Hope this was helpful
Answer:
Mitochondria
Explanation:
HELP, define genetic engineering and Describe how DNA is modified for use in genetic engineering.
Answer:
Genetic engineering is deliberate modification of genome to gain desired traits.
The main steps of genetic engineering:
Restriction enzymes are used to isolate the required gene leaving it with sticky ends. Sticky ends are a short section of unpaired bases A vector, which is usually a bacterial plasmid or a virus, is cut by the same restriction enzyme leaving it with corresponding sticky ends. The vector and the isolated gene are joined together by ligase enzyme. The vector inserts the gene into required cells. The genes are transferred to animal, plant or microorganism cells, during early development, which allows them to develop with the desired characteristics.
please give me your answer please please please please please please
Answer:
Movement.
Reproduction.
Respiration.
Responsiveness.
Excretion.
Adaptation.
All organisms have nucleic acid as the hereditary molecule.
All organisms show adaptation, which occurs at the individual level and is tightly related to homeostasis.
Assume that the readings on the thermometers are normally distributed with a mean of
0°
and standard deviation of
1.00°C.
Assume
2.9%
of the thermometers are rejected because they have readings that are too high and another
2.9%
are rejected because they have readings that are too low. Draw a sketch and find the two readings that are cutoff values separating the rejected thermometers from the others.
So far The 2.5% extreme, we have to find the supposed to this area. It should be 2.5% of .0025. We have to find P 2.5 or mhm 97.25. This extreme, so for this boat, the extreme from that table, that value will be -1.96, And this value is 1.96. This is the right from that table, and this is the required answer.
Most organisms cannot live in temperatures:
below 50°C
above 0°C
above 50°C
Answer:
Your answer would be:
C.) Below 50°C
Explanation:
Most organisms cannot live in conditions in which the temperature remains below 0 °C or above 45 °C for any length of time. In conclusion, most organisms can only live in 0 °C to 45 °C environments.
Answer:
The correct answer should be below 50 degrees Celsius
Explanation:
I believe the guy above me is correct.
Circular folds act to ______ the movement of chyme and ensure that it remains within the small intestine for maximal nutrient absorption.
Circular folds act to slow down the movement of chyme and ensure that it remains within the small intestine for maximal nutrient absorption.
What is digestion?Digestion is the physiological process of breaking down foods to obtain energy and matter by part of the body.
The chyme is a mass of food that has already been digested by different types of digestive enzymes.
The chyme is a mass generated by secretions in the stomach organ as well as in the small intestine.
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What is kyphosis caused by?
Answer:
Back Pain and Stiffness; kind of relation to Hunchback?
Explanation:
It happens when we have poor posture; positioning our arms & shoulders not how we normally position them - it can also happen when carrying heavy stuff or slouching.
Answer:
The ligaments and muscles that support the vertebrae can extend as a result of poor posture in childhood, such as leaning back in seats and carrying heavy backpacks. Kyphosis occurs when the thoracic vertebrae are pulled out of their usual position.
WHY (not how) is it possible for one organism to express genes from another organism? (i.e. an E.coli bacterial cell expressing a fluorescent protein from a jellyfish
Answer:
Because of the universality of the genetic code, the polymerases of one organism can accurately transcribe a gene from another organism.
A female mosquito can produce 50-500 offspring in a two-week period of time. This rapid reproduction can also result in fast
evolution for this small insect species. For example, pesticide resistance occurs rapidly in insects, including mosquitos. Insecticides
that were once effective at eradicating mosquito populations are no longer effective. Which component of natural selection is
Likely playing a role in this rapid evolution for mosquitos?
A)
Mosquitoes pass only advantageous traits on to their offspring during
reproduction. This ensures increased survival and reproduction.
B)
Mosquitos produce more offspring than can survive in their lifetime.
Offspring are varied genetically, with differential survival and reproduction.
Mosquitoes that learn to avoid pesticide exposure can pass that
information on to offspring. This increases the survival of those offspring
as well.
D)
Mosquitos have the ability to detect areas with high pesticide loads and
can avoid those areas. This allows mosquitos to survive and reproduce with
more success.
Mosquitos produce more offspring than can survive in their lifetime.
Offspring are varied genetically, with differential survival and reproduction.
What are mosquitoes?Mosquitoes are ectoparasites, which live on the blood of different animals.
They suck blood from the skin of animals and leave red spots, which are itchy.
Mosquitoes lay their eggs in water and live in dirty, moist, dark places.
They are also responsible to cause malaria in humans.
Thus, the correct option is B.
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Since self-driving cars have software that may potentially make life-or-death decisions, who must utilize ethical principles to judge those decisions? Select 2 options.
manufacturers who make the body of the car
governments who regulate the car industry
no one since the artificial intelligence software mimics human behavior
transportation departments that make the roads
the programmers who create the software that control the car
The utilization of ethical principles to judge the decisions are: no one, since the artificial intelligence software mimics human behavior, the programmers who create the software that control the car.
What are self-driving car?
Self-driving cars are the autonomous vehicles. These cars don't need a driver. These cars will run by themselves.
These cars are not launched currently, but work is in progress, self-driving cars will sense the people and any obstacle by the sensors.
Thus, the correct option is C, no one since the artificial intelligence software mimics human behavior and E, the programmers who create the software that control the car.
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Answer:
the programmers who create the software that control the car
governments who regulate the car industry
Explanation:
what gender tachycardia affects most?
Spinal Nerve
A. have both motor neurons and interneurons
B. send impulses in two directions
C. make up the vertebra of the spine
D. contain only sensory axons
Environmentalists are monitoring an area of tropical forest that is being deforested because of human activities. The graph here shows the scientists' predictions based on the data they have collected. How is the ecosystem likely to change as a result? Select the two correct answers.
A. decrease in biodiversity
B. gain in oxygen
C. gain of species
D. loss of habitat
Answer: decrease in biodiversity - loss of habitat
Explanation:
Answer:loss of habitat and decrease in biodiversity
Explanation:
Which of these is NOT one of the 4 chemicals used in DNA?
A. Adrenaline
B. Cytosine
C. Thymine
D. Adenine
Answer:
A. Adrenaline
Explanation:
adrenaline is a hormone
Answer:
A. Adrenaline
Explanation:
A is NOT correct because the actual 4 chemicals in DNA are Adenine,Cytosine, Thymine and Guanine.
Adrenaline is NOT part of the 4 chemicals of the DNA, which makes A correct answer.
The diagram shows that a cottontail rabbit gained 400 KJ of energy when it consumed a plant. The cottontail rabbit was later eaten by a barn owl, but the owl only gained 50 KJ of energy from consuming the rabbit. Which statement best explains why only 50 KJ of energy was passed on to the barn owl?
Answer: The total energy passed from one level to the next is only about one-tenth of the energy received from the previous organism. This means that an animal eating a plant will only get about ten percent of the energy that is stored in the plant
Explanation: it may be lost as faeces, thermal energy or may not be digested properly to get the derived energy
please please help me :( with just this one question PLEASE
Answer:
Square 1: AA
Square 2: Aa
Square 3: aa
Explanation:
The letters on the on outsides intersect in a way making diffent alleles
Help please ASAP
Which action would best help a person prepare for a power outage during a
blizzard?
A. Planning for safely heating their home
B. Boarding up windows
C. Stocking up on entertainment media
D. Planning a daily exercise routine
Answer:
I think it's A
Explanation:
Since C and D don't have to do with a power outage
B won't help either
Answer:
A
Explanation:
A. Planning for safely heating their home
Name the five carbon sugar in a DNA neucleotide
The diagram below represents one way an enzyme can be inhibited (stopped).
Which statement explains the effect of an inhibitor on an enzyme?
The substrate will not be able to attach to the enzyme's active site.
O The enzyme will likely be attacked by immune cells.
Answer:
The answer is The substrate will not be able to attach to the enzyme's active site.
Because the function of inhibitors is to block the enzyme's activity
Explanation:
PLEASE MARK ME BRAINLIEST IF MY ANSWER IS CORRECT
The substrate will not be able to attach to the enzyme's active site. So the correct option is A.
What is an enzyme inhibitor?The inhibition is carried out by inhibitors that do not advance the product's development. The inhibitors may affect the enzyme as well as the substrate. Enzyme inhibition is the term used to describe the cessation of enzyme activity.
These enzyme inhibitors can bind to active regions and prevent further action by stopping it. Both reversible and irreversible forms of binding are possible. The ability of an inhibitor to block an enzyme may be irreversible or reversible depending on its unique function. Enzyme inhibitors can block the binding site, which reduces the enzyme's catalytic activity by preventing the substrate from binding to the active site.
Reversible inhibitors bind to enzymes by non-covalent interactions such as ionic bonds, hydrogen bonds, and hydrophobic contacts. Reversible inhibitors do not conduct chemical reactions when they are linked to an enzyme and are quickly removed by dilution or dialysis.
However, irreversible inhibitors usually covalently change an enzyme, making it impossible to reverse inhibition.
Therefore, the correct option is A.
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Look at the tropical grassland ecosystem.
Picture of tropical grassland with zebras and wildebeests feeding on grasses. Giraffes are in the background, along with bush trees.
Picture of tropical grassland with zebras and wildebeests feeding on grasses. Giraffes are in the background, along with bush trees.
There are more zebra than the carrying capacity of the pictured ecosystem. This represents a
climax community
biological surplus
peak phenomenon
sigmoid phenomenon
Answer:
It is B Biological Surplus
Explanation:
Biological Surplus means that a species population has grown too big, above carrying capacity
frog is an amphibion science subjects class 4
Answer:
yes a frog is an amphibion
Explanation:
correct
(i need some help here pls)
Before uniformitarianism, what theory was widely accepted?
1.) Uniformitarianism is the only theory
2.) The law of superposition
3.) Catastrophism
Answer:
3.)CATASTROPHISM
Explanation:
catastrophism suggested the features seen on the surface of earth such as mountains,were formed by large abrupt changes or catastrophes
what is cell and what are cell organalles
Answer:
a subcellular structure that has one or more specific jobs to perform in the cell, much like an organ does in the body
so it is like a cell that works in the body but its a (organelles) in side the cell working in it like it is the cell in side the body
Need Help Asap please. Question 1) Describe how the nervous system helps different parts of your body communicate with one another the moment you begin to pet a dog. ( Please make sure you answer this question completely and right). Will Mark Brainliest if answered correctly. Write a much as you can.
Answer:
When you pet a dog, your nerves send a signal to your brain of the soft, silky, warm fur of the dog. Your brain sends a signal back telling your arm to move up and down the dog. Your nerves feel the warmness and softness of his fur and send it to the brain. The brain relates this to other things and secretes hormones through glands which shows the pleasure.
Explanation:
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4. Which statement describes the nutrient cycle?
the movement of nutrients within plants that allows them to conduct photosynthesis
the movement of nutrients within all soil layers that allow plants to grow and seeds to germinate
the movement of the three non-mineral nutrients that are absorbed through the soil
the movement of nutrients from the physical environment into living organisms and back again
Answer:
The correct answer is - the movement of nutrients from the physical environment into living organisms and back again
Explanation:
Answer:
D/ The movement of nutrients from the physical environment into living organisms and back again.
Explanation:
I took the test and got it right
How does artificial selection affect variation within a species when a specific trait continues to be bred?
It reduces the amount of variation.
It increases the amount of variation.
It has no impact on the amount of variation.
It causes variation to fluctuate with each generation.
The amount of variation is reduced when a specific trait continues to be bred.
What is artificial selection?Artificial selection is the process in which organisms are chosen by human for the breeding purpose in order to get the desired characteristics.
So we can conclude that It reduces the amount of variation when a specific trait continues to be bred.
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Climates are classified on_________
Complete this sentence: Energy that is not transferred to the next trophic level is mostly escaped as ________ energy.
heat
chemical
trophic
biomass
Answer: heat
Explanation:
Energy that is not transferred to the next trophic level is mostly escaped as heat energy.
Which of these is a benefit of fish farming?
A. It poses a risk of disease for wild stocks.
B. It depletes fish populations.
C. It eases the demand on commercial fisheries.
D. It pollutes natural bodies of water.
Answer:
C
Explanation:
It's pretty simple really, just find the Benefit. Pollution is definitely a harmful effect, disease is also not a benefit, and depletion of fish population is bad, so easing demand on commercial fisheries is the answer