Answer:
The phase which occurs after G2 of the cell life cycle is the M phase, also known as Mitotic or Meiotic phase.
What happens in crossing over?
#1
Exchange of genes during metaphase of meiosis.
#2
Exchange of genetic material between homologous chromosomes.
#3
Homologous chromosomes fail to separate during mitosis.
#4
Random distribution of chromosomes during mitosis.
Answer:
#1 These new combinations result from the exchange of DNA between paired chromosomes. Such exchange means that the gametes produced through meiosis exhibit an amazing range of genetic variation.
Explanation:
Thats the only one i rem
Answer:
Exchange of genetic material between homologous chromosomes.
Explanation:
Crossing over occurs at prophase I of meiosis. The chromatids break at the junctions and rejoin with the opposite chromatid. This causes exchange of genes between homologous chromosome. It causes mixing of paternal and maternal alleles and is one of the reason that meiotic division causes genetic variation.
What organic molecules can be found in protein, oxygen, and fat?
Answer:
Lipids are organic compounds that consist of carbon, hydrogen, and oxygen. They are made up of fatty acids and other compounds. They provide cells with energy, store energy, and help form cell membranes. Proteins are organic compounds that consist of carbon, hydrogen, oxygen, nitrogen, and, in some cases, sulfur.
Explanation:
Why do gymnosperms and lower vascular plants lack companion cells?
Answer:
Gymnosperms and lower vascular plants have sieve cells as their sieve elements, while sieve tubes are characteristic of flowering plants angiosperms. In gymnosperms, typical companion cells are lacking in the phloem. In gymnosperms, generally the xylem contains only tracheids. Vessels are absent.
Explanation:
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40 POINTS PLEASE HELP
Answer: the structure in the cells nucleus that houses a cell’s genetic information is chromosome
Explanation:
Answer: Nucleus
Explanation: The nucleus serves as the cell's command center, sending directions to the cell to grow, mature, divide, or die. It also houses DNA (deoxyribonucleic acid), the cell's hereditary material.
Mitosis is responsible for growth, repair, and maintenance in an organism because
a. it occurs at a faster rate than meiosis.
b. the chromosome number is reduced by half.
c. exact duplicates of each mother cell are produced.
d. it is the only process that involves replication of genetic material.
Answer:C
Explanation:
Beacause if it didn't make exact copies they could make the body function differently
Which is most associated with the building and repair of cells, organelles, and tissues?
A) fiber
B) lipid
C) sugar
D) protein
Answer:
Hi... Your answer is D...
Protein is most associated with the building and repair of cells, organelles, and tissues.
Protein is a class of biological molecules that are composed of amino acids that link up to form long chains. Proteins are vitally involved in many processes in the body.
Most importantly proteins are connected with the repair of worn out cells, organelles, and tissues because they are broken down to release essential amino acids.
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Traits are determined by the _____________on the chromosomes.
Answer:
Genes
Explanation:
Traits are determined by the genes on the chromosomes. Genes are contained in chromosomes. It is in the cell nucleus.
which of the following levels of organization best represents the sequence from smallest unit to largest
Answer:
D.
Explanation:
In the sequences given, cell is the smallest unit and organ system is the largest unit.
The levels of organization the best represents the sequence from smallest to largest units is cell, tissue, organ, and organ system.
The cell represents the smallest and basic unit of all living organisms.Tissues are aggregates of cells performing similar functions.Organs are made of different similar tissuesOrgan systems are a collection of different organs coming together as a system to perform specific functions. Examples include the respiratory system which is made up of organs like lungs, windpipe, nose, mouth, etc.More on different levels of organization of living organisms can be found here: https://brainly.com/question/6033339?referrer=searchResults
Identify the statement below that is NOT a principle of evolution.
O Populations evolve, individuals do not
O Negative adaptations will become more common in a population
O Variations occur naturally within a population
O Adaptations help individuals compete successfully for survival
B) negative adaptations will become more common in a population
negative adaptations will become more common in a population.
What is Evolution?According to the idea of evolution in biology, the many species of plants, animals, and other living things on Earth descended from earlier species, and their recognizable differences are the result of changes made by subsequent generations.
More than 2 million species of organisms already in existence have been recognized and documented; many more are still undiscovered, with estimates ranging from 10 million to 30 million.
The amazing variability in size, form, and mode of existence, from tiny bacteria with a diameter of less than a millionth of a millimeter to majestic sequoias with a height of 100 meters, is as astonishing as the figures.
Therefore, negative adaptations will become more common in a population.
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The unusual strength of a glue makes it able to hold a heavy object, or load, as shown in the diagram below.
If the load exerts a strong downward force, the glue
A. destroys the force
B. exerts a stronger downward force
C. causes the load to accelerate upward
D. exerts an upward force that is equal to the downward force
Answer:
D
Explanation:
for every action, there is an equal and opposite reaction
If the load applies a significant downward force, the adhesive will apply an equivalent upward force. Thus, option D is correct.
What is role of upward and downward force?All objects on Earth experience weight, or a gravitational pull that is proportionate to their mass and is imposed by the planet's mass.
The acceleration that gravity gives to objects falling freely serves as a gauge of its strength.
All objects with mass, including our Earth, really bend and curve spacetime, which is what causes gravity to pull you toward the ground. What you experience as gravity is that curvature.
If the load exerts a strong downward force, the glue exerts an upward force that is equal to the downward force.
Therefore, exerts an upward force that is equal to the downward force.
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Plant anatomy and physiology notes ( I have to more questions )
Read the paragaph.
Unlike animals, plants make the own food out of water, at, and sunlight Plants need water just as we do, they also use water to make
their food. The part of the ar that plants use is called carbon dioxide. When plants make food they take carbon dioxide out of the air and put
Green Into the origen is the part of the ar that we need to breathe The energy that all living things get from eating food comes from the sun
A piant cantike this solar energy directy and use it to make food for itself. When we eat plants, we are getting energy that the plant got from the
sun and then made into food
What does the word solar mean in this paragraph?
To understand what it means you should find the paragraph where this word is "solar energy". This is the energy that plant absorb. Solar means from sun
This cell is in what stage of mitosis?
Answer:
Prophase
Explanation:
I'm honestly looking at a diagram in my biology book.
Explain why Mercury's surface temperature varies so much from day to night. plz over 40 words
(GIVING BRAINLIEST!!!)
How does the atmospheric temperature and size of inner planets compare with those of outer planets?
A) The inner planets are colder and relatively larger than outer planets.
B) The inner planets are colder and relatively smaller in size when compared to outer
planets.
C) The inner planets are hotter and relatively larger in size when compared to outer planets.
D) The inner planets are hotter and relatively smaller than outer planets.
Answer:
The answer is D
Explanation:
Right on edge
Why purebred dogs More likely to develop problems later in life
which characteristic of life would the process of puberty fall under for human organisms?
1- All have cells
2- Must grow and develop
3- respond to their environment
4- obtain/use energy
Which structure pumps out excess water and wastes?
Answer:
The contractile vacuole pumps out excess water and wastes.
Cells have a particular organelle that pumps out excess water and other wastes from the cell. Contractile vacuole serves this purpose.
The protozoan cell contains an organelle or subcellular structure called the Contractile Vacuole. It is a spherical, transparent, translucent, pulsating single-cell organelle. Previously, it was referred to as a pulsatile or pulsating vacuole. It is encased in a unit membrane, floats in the cytoplasm, and is filled with watery fluid. It is a vacuole that constricts and expels water from the cell, as its name suggests. It frequently stretches and shrinks. While water is expelled from the contractile vacuole as it expands, the contractile vacuole contracts, causing water to collect inside the organelle. The contractile vacuole is the protozoan unicellular organism's kidney. It shows the rhythmic systolic and diastolic movements.
Therefore, Contractile vacuole pumps out excess water & wastes.
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The amount of kinetic energy an object has depends on which feature of the object?
O its motion
O its position
its gravity
O its height
Answer:
A. Motion......
The amount of kinetic energy an object has depends on its motion.
WHAT IS KINETIC ENERGY?Kinetic energy is the energy of an object that is due to its motion.
The kinetic energy of an object is denoted by the following expression:
K.E = ½ × mass × velocity.Therefore, this shows that amount of kinetic energy an object has depends on the motion of the object.
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Why is it not possible to be a carrier of Huntington’s disease?
Answer:
Huntington’s is a dominant disease.
Explanation:
It is not possible to be a carrier of an autosomal dominant disease because if you possess just one mutated allele you will be affected by the disease. It is only possible to be a carrier of recessive diseases. Huntington’s is, therefore, a dominant disease.
this is because of the way the gene that causes HD is inherited, what is called dominant inheritance. you either have it or you don't, you cannot be a carrier.
Which scenario causes gene flow?
a) an animal moves to a new population and mates.
b) new mutations arise within new populations.
c) one flower pollinates other flowers in its population.
d) a populations size decreases after a natural disaster.
An electromagnet is different from an iron magnet because ________________.
A. it is created by an electric current
B. it can also be plugged in to run a toaster
C. it will require a battery pack to charge it
D. it is always painted blue
Answer:
A
Explanation:
Electromagnet is an electrical component that when powered emits a magnetic field based on the amount of current provided. this is the same principal that runs induction motors
Which statement is FALSE? A. Phototropism and geotropism are adaptations of plants that allow for survival. B. Tropism is the growth response of plants to their environment due to external stimuli. C. A plant's response to moonlight is phototropism while it's response to gravity is geotropism. D. A tropism that causes a plant to grow towards the stimulus is positive.
Answer:
A. Phototropism and geotropism are adaptations of plants that allow for survival.
Explanation:
Ideally, TROPISM is the growth response of plants to their environment due to external stimuli as rightly stated in this question. However, based on what stimulus the plant is responding to, there are different types of stimulus.
Phototropism (photo-light) is the response of an organism to a light source while Geotropism (geo- gravity) is the response of an organism to gravity. Hence, based on this question, a plant's response to moonlight is phototropism while it's response to gravity is geotropism.
Also, tropism can either be positive or negative depending on whether the response is towards the stimulus (positive) or away from the stimulus (negative). Therefore, the FALSE statement is "Phototropism and geotropism are adaptations of plants that allow for survival"
Lucy got a new car for her birthday so she went for a long drive. First
she went West for 6 km, then turned North and went 4 km. Next she
went 12 km east and then 8 km South. What is her distance
Answer: 31,000 meters (m) or 31 kilometers (km)
Explanation:
6,000 meters + 4,000 meters + 12,000 meters + 8,000 meters=31,000 meters
Simplified explanation: 6+4+12+8=31
What is the amplitude of this wave?
Answer:
B) 3
Explanation:
Answer:
b)3
Explanation:
How does population size affect the organisms in it?
Answer:
If a population starts to increase in size because of reproduction, it might reach its carrying capacity. This can affect the natural sources the population gets because the wouldn't be enough to support all the organisms in that population.
WILL MARK BRAINLIEST!! HELP ME PLS I DON'T GET THIS
What is the genotype and phenotype ratio for this cross?
Answer:
Genotype ratio Tt:tt=1:1
Phenotype ratio 1:1
Explanation:
the phenotype ratio should be 1:1 since there are 2 individuals with the dominant allele and 2 without it
The genotype ratio should be 1:1 for the same reason
What are proteins made of.
Answer: amino acids
Explanation:
***PLZZ HELP ASAP I HAVE NO IDEA AND A TIME LIMIT
1. A worker uses a board that is 4 m long to pry up a boulder. A small rock is used for a
fulcrum and is placed 0.5 m from the resistance end of the lever. Calculate the MA of the
I
board.
Answer:
7
Explanation:
Mechanical advantage is given by the ratio of the distance of the fulcrum from the two objects of the system.
Here the boulder is [tex]0.5\ \text{m}[/tex] from the fulcrum and the mass at the other end of the lever is [tex]4-0.5=3.5\ \text{m}[/tex] from the fulcrum.
So, mechanical advantage is given by
[tex]MA=\dfrac{3.5}{0.5}\\\Rightarrow MA=7[/tex]
So, mechanical advantage of the board is 7.