Genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring
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What are some ways this community could protect their watershed?
Don't dump anything in the river
O Limit pesticide and fertilizer to prevent runoff
O Protect natural vegetation along river
All of the above
Answer:
All of the above can prevent the watershed
Which letter kingdom represented would be animals?
B)
C)
E)
F)
Answer:
F)
Explanation:
Animals are multicellular organisms (that's why we can see them) with a nucleus containing DNA. They consume other organisms. This means they are heterotrophs. Animal cells don't have cell walls. If you look at its cell, there is no cell wall visible. This eliminates options B, C, and E. So, option F would represent animals.
13. Which of the following statements about complete metamorphosis is TRUE?
The physical form of the young animal is completely different than the physical form of the adult.
The adult form of the animal is similar to the young animal.
O All organisms that undergo complete metamorphosis are a caterpillar at some time.
Only arthropods undergo complete metamorphosis.
Answer:
The first one true.
Explanation:
Metamorphosis usually starts with the baby being completely different from the adult. Take a frog for instance. Righttttt
the second couldn't be because then that wouldn't metamorphosis...just growth..
not all organisms that metamorphise are caterpillars ..as i said..look at the frog:)
how animals and plant transport system is different from each other?
Answer:
Hello! My name is kaori and today ill be helping you to finding the correct answer you need Let's begin.
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♡ Animals
• Speciliased tubes-arteries
• Speciliased tubes-arteriescapillaries in the veins
• all tubes are composed of living cells
• the concentration of substances transported is controlled
• the heart controlls the circulatory system. the heart is controlled by the nervous system.
• the rate of flow is moderate and is regulated by vasoconstriction and vasodilation
• the subtances being transported are respiratory gases, amino acids, glucose, vitamins, fatty acids etc
☆ Plants
• Spealised tubes -xylem vessels and trachids and phloem seive tubes
• Spealised tubes -xylem vessels and trachids and phloem seive tubes• some tubes are composed of living cells
example: phloem otherbare composed of dead cells
• the concentration of the substances being transported is NOT controlled.
• there is NO such control in plants
• the rate of flow in xylem and phloem is quite slow
• substances being transported are: amino acids, sucrose, fatty acids, etc.
HOPE THIS HELPED YOU.
The spherical object within a cell which controls its activity is called the _____. vacuole cytoplasm epidermis nucleus
Answer:
Your answer is nucleus.
Explanation:
The nucleus controls and regulates the activities of the cell (e.g., growth and metabolism) and carries the genes, structures that contain the hereditary information. Hope this helped :)
Answer: nucleus
Explanation: nucleus is the round object within a cell that controls its activity
Which lymph trunks receive lymph from the upper limbs?.
Answer:
Lumbar trunks (receives lymph from lower limbs)
Intestinal trunk (receives chyle from digestive organs)
Bronchomediastinal trunks (collects lymph from thoracic viscera)
Subclavian trunks (receive lymph from upper limbs and thoracic wall)
Jugular trunks (drain lymph from head and neck)
Explanation:
Add another bar to the chart that would represent Han
chinese at low altitudes. Pay attention to the height of
the bar and provide a short explanation for your choice.
Assuming height of the bar represents altitude, the bar representing Han Chinese will be shorter compared to that representing Tibetans since Han Chinese live at lowlands.
What is the role of natural selection in evolution in Tibetanscompared to Han Chinese?Tibetans and Han Chinese are thought to originate fro. same ancestors.
However, while the Han Chinese lived in lowland areas, Tibetans split off drom the Han Chinese about 2750 years ago and went on to live in high altitudes.
Natural selection helped Tibetans to evolve to adapt to high altitudes with several mutations occurring in their genes which are mostly related to use of oxygen by the body.
Assuming height of the bar represents altitude, the bar representing Han Chinese will be shorter compared to that representing Tibetans.
Learn more about natural selection at; https://brainly.com/question/524043
How can cells from the same organism have such different shapes and functions?
Answer: As each cell differentiates, the DNA changes so that each type of cell has different DNA once it reaches maturity. Mutations in the cells’ nuclei lead to new combinations of DNA, resulting in different shapes and functions in the different types of cells.
Hope this helps!
whats an example of differentiation?
Answer:
stem cells, while neurons are one of the most differentiated cells known.
Explanation:
Cell differentiation takes place fundamentally thanks to controlled changes in the transcriptional program; that is, coordinated changes in gene expression.
Which of these best describes the practice of management?
cataloguing and following a health plan
providing and documenting a healthy diet
building and maintaining a clean habitat
treating and preventing illnesses and pests
Explanation:
building and maintaining a clean habitat treating and preventing illness and pests
What are the steps to compDNA replication
If 15% of a particular DNA strand are nucleotides containing cytosine, what percentage of the DNA molecule would contain thymine
Answer:
35%
Explanation:
To make a DNA helix, two DNA strands are required. They are connected by the nitrogenous bases on each strand. Each type of nitrogenous base is complementary to another type: cytosine (pyrimidine) pairs with guanine (purine) and thymine (pyrimidine) pairs with adenine (purine). This means they only bond with their pair.
For every cytosine, there must be a guanine bonded to it. So, if 15% of the strand is cytosine, another 15% must be guanine.
Since,
15% + 15% = 30% and 100% - 30% = 70% ,
30% of the DNA strand consists of the cytosine-guanine pair and 70% of the DNA strand consists of the adenine-thymine pair.
Since,
70% / 2 = 35% ,
70% is made up of equal parts adenine and thymine, 35% of the DNA strand must contain thymine.
Which of these statements about Earth’s magnetic poles is NOT correct?
The magnetic poles move around.
Earth’s magnetic field lines curve in toward Earth at the magnetic poles.
The magnetic poles are located at the geographic north and south poles.
Auroras form near the magnetic poles
I AM BETTING 70 POINTS SO RIGHT ANSWERS ONLY
Its Option 1 : The earth magnetic field is primarily a dipole that is ithas two poles. This brings the North and south magnetic pole.
Answer:
The magnetic poles are located at the geographic north and south poles IS THE INCORRECT ANSWER
The space in the chest between the lungs is called the Group of answer choices diaphragm. mediastinum. alveolus. sinus cavity. pleural cavity.
Answer: The space in the chest between the lungs is called mediastinum.
what are the cons of fetal stem cells
Answer:
The research is unethical(fetal stem cells) since the blastocyst, an unimplanted human embryo at the sixth to eighth day of development, is destroyed during the stem cell extraction process.
Answer:
Embryonic Stem Cell Disadvantages
1. Difficult to differentiate uniformly and homogeneously into a target tissue. 2. Immunogenic—ES cells from a random embryo donor are likely to be rejected. after transplantation.
Explanation:
The main disadvantage with embryonic stem cells is the way that they are acquired. Since human embryos are destroyed during the process of harvesting embryonic cells, this makes the research unpopular with those that believe human life begins at conception and that this life is being destroyed.
The consumption of carbohydrates is most likely to:.
Answer:
Thanks for posting your question on Brainly!
Explanation:
The answer:
Trigger the release of serotonin which reduces tension and anxiety.
which of the following is a biotic factor within an ecosystem
a- the climate in the area
b- the herbivores that feed on producers
c- the amount of oxygen in the air
d- the amount of sunlight
When an object is in motion, it possesses what type of energy?
А
potential energy
B
kinetic energy
с
thermal energy
D
chemical energy
When an object is in motion, it possesses kinetic energy.
Option b is the only correct answer
What is kinetic energy?Kinetic energy is the energy a body has or possess due to its relative motion.
Some few examples of kinetic energy are as follows:
RunningWalkingCyclingCar movementAeroplane flyingLearn more about kinetic energy:
https://brainly.com/question/8101588
What are two of the main factors that limit primary production in the epipelagic
Answer:
1) NUTRIENTS
2) LIGHT
Explanation:
So the two potential limiting factors in marine primary productivity are the availability of nutrients and light. Most phytoplankton stay near the surface to absorb red light.
2N is the formula for determining
Answer:
2N is the formula for determining diploid chromosome number
hello humans ~
Which of the following is a disease caused by protozoans?
Tuberculosis
Polio
Malaria
Typhoid
first of all, im not a human, im an alien or as my family and friends say. Second of all, the answer is Typhoid
Eukaryotic cells have DNA enclosed in a double membrane called the nucleus. The nucleus functions to
Separate the DNA from other activities that occur in the cytoplasm.
Enjoy! ^^
Binomial nomenclature includes 2 parts, what are the 2 parts that make up a scientific name?.
Answer:
ldont knowmy colleagues please
The smallest unit that can carry out all activities associated with life
Answer:
Cell is the most basic unit of any organism, smallest unit of life that can function independently and perform all the necessary functions of life, including reproducing itself. All living organisms are made up of one or more cells. The cell is the smallest thing that is alive.
Explanation:
4. In a species of roundworm, having a hard cuticle (H) is dominant to having a soft cuticle (h). In the lab, a
nematode with a hard cuticle mates with a soft-cuticle nematode. All of the offspring have hard cuticles. What
are the genotypes of the parents?
Structures that are anatomically similar because they were inherited from a common ancestor are called ____________ structures.
Answer:
Homologous structures
Explanation:
Physical features may be considered homologous or analogous, but what does this mean? Homologous structures are similar physical features in organisms that share a common ancestor, but the features serve completely different functions. An example of homologous structures are the limbs of humans, cats, whales, and bats
Today, biologists classify organisms primarily by their
Group of answer choices
a.DNA.
b.All choices are correct.
c.behavioral differences.
d.Appearances only.
Answer:
It's DNA.
Explanation:
DNA is the most recent utility to determine the origin of an organism and it's powers compared to it't weaknesses.
Nowadays, it is the primary tool:
Deoxyribonucleic acid is a polymer composed of two polynucleotide chains that coil around each other to form a double helix carrying genetic instructions for the development, functioning, growth and reproduction of all known organisms and many viruses. DNA and ribonucleic acid are nucleic acids.
BRAINYEST QUESTION
Because the woman was known as a philanthropist, the charity group approached her for a donation.
What does the word philanthropist mean in this sentence?
A)someone who owns a business
B)someone who has inherited money
C)someone who makes a lot of money
D)someone who donates to charitable causes
Answer:
the answer is D now give me brainlest
Explanation:
i will give brainliest if write in 5-10 min
Which of the following describes an area of land, generally state or nationally owned, that is often leased to different groups for its natural resources?
National park
Protected area
Extracted reserve
Conservation zones
Answer:
Extracted Reserve
Explanation:
Hope this helped nwn-
Question 1 (5 points)
When salt is added to water, what happens to the molecules?
Water and salt molecules remain together.
The water molecules remain together. The salt molecules break apart.
Water and salt molecules break apart.
The water molecules break apart. The salt molecules remain together.
Answer:
The water molecules remain together. The salt molecules break apart.