Answer:
Habitat isolation occurs when habitat preferences lower the probability of mating between individuals associated with differing habitats. While a potential barrier to gene flow during ecological speciation, the effect of habitat isolation on reproductive isolation has rarely been directly tested.
Explanation:
Habitat isolation occurs when habitat preferences lower the probability of mating between individuals associated with differing habitats. While a potential barrier to gene flow during ecological speciation, the effect of habitat isolation on reproductive isolation has rarely been directly tested.
ACTIVITY 2: NOW I KNOW!
Directions: Complete the paragraph using the word pool provided. Write the word in your long pad.
MIRROR
OBJECTIVES
PENCIL
MAGNIFICATION
EYEPIECE
INVERTED
GLASS SLIDE
COVER SLIP
10X
FIELD OF VIEW
40X
UPWARD
The microscope is an essential tool in Biology. It provides us with important data on specimens being examined.
The (1) has various magnification (5x, 10x, 12.5x, 15x) which attaches to the body tube. On the other hand, the
revolving nose piece are attached by (2) with 10x, 40x and 100x magnifications.
In preparing a wet mount, place the specimen in a (3)
add a drop of water and cover it with a (4)
Tap the cover slip with the eraser-end of a (5)
to reduce the formation of the bubbles.
Look at the eyepiece and adjust the (6) to find the (7) of the microscope which is the bright circle
of light. The (8)
of specimen is computed by multiplying the magnification of the Eyepiece with the
magnification of the Objectives. If the eyepiece has a magnification of 10x and the Objective has (9)
then
the specimen's magnification is 400x. In addition, turning the stage knob upward will result to moving the specimen as
seen in the microscope downward while turning the stage knob to the left will move the specimen to the right as seen
under the microscope. Finally, the specimen when seen under the microscope appears (10)
Answer:
The correct answer would be -
1.) objectives
2.) eyepiece
3.) glass slide
4.) coverslip
5.) pencil
6.) mirror
7.) field of view
8.) magnification
9.) 40x
10.) inverted
Explanation:
Objectives of the microscope have magnification (5x, 10x, 12.5x, 15x) which attaches to the body tube. The nosepiece is found between the stage and the eyepiece or ocular lens. Glass slide is the slide where a specimen is placed for the study and covered with a coverslip, bubble should be avoided while placing the coverslip.
Mirrors need to adjust to seeing the field of view by adjusting the light. After computing the magnification there would be a final image of the specimen that would be inverted due to the two lens used here.
When summarizing the process of transcription in a cell as a gene is used to build a polypeptide, which of these statements accurately reflects the process of transcription? You may choose all that apply.
Answer:
This question lacks options, the options are:
A) An mRNA molecule is produced in the nucleus of the cell.
B) The ribosome attaches to the DNA to build a polypeptide
C) The resulting RNA molecule is a complement of the gene on the DNA.
D) The RNA molecules contains three nucleotides in a row whose bases form
a codon.
E) A polypeptide is synthesized based on the sequence of nucleotides on the tRNA molecule.
The answers are A, C and D
Explanation:
Transcription is the first process of gene expression whereby a mRNA is synthesized from a DNA template. Transcription, which occurs in the NUCLEUS, takes place in three stages namely: initiation, elongation and termination.
- Initiation involves the attachment of RNA polymerase to the DNA molecule, inducing the unzipping of the double stranded DNA.
- Elongation involves the synthesis of RNA strand by adding complementary nucleotides based on the ones read on the DNA strand.
- Termination signals the end of the transcription process.
Based on this question and the above explanation of the transcription process, the following pertains to transcription in the nucleus:
- mRNA molecule is produced in the nucleus of the cell.
- The resulting RNA molecule is a complement of the gene on the DNA.
- RNA molecules contains three nucleotides in a row whose bases form a codon.
People and animals living in low-lying areas of Lake Nyos in Cameroon, Africa, were killed after carbon dioxide escaped
from the lake and moved across the land. This is an example of
a. how human activities can affect humans and the environment
b. the fatal consequences of industrialization
C. how natural processes can introduce harmful materials into the environment
d. the dangerous effect of livestock competition
Answer:
C. how natural processes can introduce harmful materials into the environment
Explanation:
what does the theory of evolution state
Answer: In biology, evolution is the change in the characteristics of a species over several generations and relies on the process of natural selection. The theory of evolution is based on the idea that all species? are related and gradually change over time
Explanation:
II. Use the diagram below to answer the following questions.
rat
Plant
insect
mice
snake
1. Which converts light energy to chemical energy?
2. Among the animals, which will have the least energy?
3. Which is the secondary consumer?
4. Which is herbivore?
5. Which organism will have the greatest energy?
Answer:
ans:chlorophyll,insect,
PLS HELP ILL MARK BRAINLIEST!!
9. What are the three names commonly used to refer to the places where electrons can be
found?
10. Approximately,
manmade.
elements are found naturally on Earth. The others are
11. How does the Periodic Table organize elements? (2 answers)
12. The atomic number is
13. The atomic mass is
14. The Periodic Table is arranged in order of
The number of protons
Increases from left to right.
15. The vertical rows of the Periodic Table are called
All of the elements in a vertical row have similar characteristics.
I
Explanation:
9 The center of the atom is called the nucleus. Electrons are found in areas called shells. A shell is sometimes called an energy leve
12. 6
13. The atomic mass of an element is the average mass of the atoms of an element measured in atomic mass unit (amu, also known as daltons, D).
14.Elements are arranged from left to right and top to bottom in order of increasing atomic number.
15.The vertical columns on the periodic table are called groups or families because of their similar chemical behavior. A
10.Of these 118 elements, 94 occur naturally on Earth. Six of these occur in extreme trace quantities: technetium, atomic number 43; promethium, number 61; astatine, number 85; francium, number 87; neptunium, number 93; and plutonium, number 94.
What was a goal of Confucianism? HURRY TEST
Create cladograms for the primates and animals groups (skip the Artiodactyla for now). These Claudio grams are a little more complex and you may have to include multiple branches at the same level such as in the example shown at the right. When you had built Cladograms with the lowest possible parsimony score compare them to the accepting Cladogram
Answer:
b
Explanation:
What is used to cut the chromosome open?
Answer:
Restriction enzymes
Explanation:
What is the control of conditions inside the body called
Answer:
Homeostasis
Explanation:
Conditions inside our body must be very carefully controlled to function effectively.
I guess Homeostasis
Explanation:
The condition inside our body must be very carefully it the body is to function effectively. Homeostasis is the maintenance of a constant internal environment
Assume that (B) is dominant and (b) is recessive: Bb mates with Bb
A. About 50% of the offspring will show the recessive trait
B. All the offspring will show the dominant trait
C. All the offspring will show the recessive trait
D. About 75% of the offspring will show the dominant trait
If B is dominant over b and Bb mates with Bb, about 75% of the offspring will show the dominant trait.
Looking at the cross:
Bb x Bb
BB Bb Bb bb
BB and Bb will show the dominant trait while only bb will show the recessive trait.
Thus, the chances of the offspring showing the dominant trait would be 3/4 or 75% while the chances of showing the recessive trait would be 1/4 or 25%
More on chances in genetic crossings can be found here: https://brainly.com/question/2236332
A pyramid of numbers for the wetland ecosystem showed that there were very large numbers of organisms at the base of the pyramid and very few at the top. Explain why
Answer:
hmm... i dont know
Explanation:
What are three sub-zones biosphere?(lithosphere (rock part) Atmosphere (air part) and hydrosphere(water part).
There is no question like that XD u suck
What do Ebola victims usually die from
Answer:
People who die from infection with Ebola virus usually end up dying from multi-organ failure and shock.
Explanation:
The shock is from the bleeding -- now you're bleeding in different parts of your body, and the blood is leaking out of your blood vessels
Answer:
★ Bleeding from immune system overload
Explanation:
Hope you have a great day :)
Need help answering this Neurons are constantly firing on a regular basis in order to keep your body functioning. In your words, describe how a neuron utilizes a stimulus to create an action potential. (Be detailed)
Answer:
Action potentials are generated when information are sent down an axon through the neuron.
Explanation:
Neurons are nerve fibres which uses electrically charged chemicals to bring about an electrical change.
Action potentials can be defined as rapid changes in the membrane potential that spread rapidly along the nerve fiber membrane. Each action potential begins with a sudden change from the normal resting negative membrane potential to a positive potential and then ends with an almost equally rapid change back to the negative potential. The are three stages of action potential, these include:
--> Resting stage: This is the resting membrane potential before the action potential begins. The membrane is said to be 'polarized' during this stage.
--> Depolarisation stage: in this stage, the membrane suddenly becomes very permeable to sodium ions, allowing tremendous numbers of positively charged sodium ions to diffuse to the interior of the axon. That is, the normal polarised state, for example -90 millivolts, is immediately neutralised by the inflowing positively charged sodium ions, with the potential rising rapidly in the positive direction. This is called DEPOLARISATION.
--> Repolarisation stage: This occurs within a few seconds after the membrane becomes highly permeable to sodium ions, the sodium channels begin to close and the potassium channels open more than normal. Then, rapid diffusion of potassium ions to the exterior re- establishes the normal negative resting membrane potential. This is called REPOLARISATION of the membrane.
Why do some electromagnetic waves have more energy than others?
Answer:
For electromagnetic waves, speed is constant, so waves with a high frequency and a short wavelength (like X-rays) are the most energetic. For all waves, a greater amplitude means more energy
Explanation:
Gamma rays have the maximum energy on the electromagnetic spectrum, while long radio waves have the lowest. In addition to visible light, the sun also radiates infrared (IR) and ultraviolet (UV) energy. A narrow range of wavelengths, from 380 nm to 750 nm, are covered by the visible portion of the electromagnetic spectrum.
What about electromagnetic waves?The electric field will change as the magnetic field changes, and vice versa.Electromagnetic waves, as opposed to mechanical waves, can move across empty space.From highest to lowest energy, the components of the electromagnetic spectrum are referred to as gamma rays, X-rays, UV radiation, visible light, infrared radiation, and radio waves. Electromagnetic waves, which have varying wavelengths from one another, include radio waves, microwaves, visible light, and x-rays. The wavelengths are (a) longer; (b) shorter.All electromagnetic waves are transverse waves that can pass through a vacuum and travel at the same speed—300,000,000 times the speed of light—while doing so.The longest wavelengths are found in gamma rays. The electromagnetic spectrum's greatest frequency is found in gamma rays. They oscillate between 1020 and 1022 HzGamma Rays are the right response.Learn more about electromagnetic waves here:
https://brainly.com/question/75996
#SPJ2
Long chain of _________________ that surrounds the Pacific Ocean.
Answer:
Circum-Pacific belt
Explanation:
it is the belt that goes around the Pacific Ocean longest
Two genetically identical plants were crossed. The genotypic ratios of offspring are seen in the Punnett square
What percent of the offspring should look like the parents?
This is science btw
Answer:
Its below
Explanation:
75% of them will have the dominant trait and 25% will have the recessive trait.
Your question was a bit confusing. Does my answer satisfy it?
How do humans affect the carbon cycle?
Using pencil to write,exhaling carbon dioxide, wearing sunscreen or inhaling oxygen?
NEED HELP ASAP
Answer:
both
Explanation:
it a affects the carbon cycle both ways
In which phase do daughter nuclei began to form at the ends of the cell?
PLEAS DONT DO IT FOR POINTS I AM REALLY LOW
A. Interphase
B. Metaphase
C. Prophase
D. Cytokinesis
E. Telophase
F. Anaphase
Daughter nuclei begin to form at the ends of the cell during telophase
what are the different cellular organelles
Answer:
Plasma membrane, nucleus, ribosomes, mitochondria
Explanation:
during the process of cellular respiration, energy is released from(1)Carbon dioxide (2) Oxygen atoms(3)Water molecules (4) chemical bonds
Answer:
4) Chemical Bonds
Explanation:
Photosynthetic organisms produce oxygen based on whether light is available for photosynthesis. These organisms also consume oxygen for cellular respiration in both light and dark environments. In three to five sentences, explain how these conditions relate to gross and net
productivity. (4 points)
Answer:
Gross productivity refers to the amount of carbon fixed.
Explanation:
Gross productivity refers to the amount of carbon fixed during the process of photosynthesis by all producers such as plants and algae etc in the ecosystem. A large part of the energy that is produced in the process of photosynthesis is used by the plants in the metabolic processes of the producers such as respiration. The net productivity indicates that carbon dioxide plants that is used during the photosynthesis process substracted from carbon dioxide the plants releases during the process of respiration.
Answer:
be care if use answer ^ got in troulbe reword it really good
Explanation:
In certain breeds of dogs, deafness is due to a recessive allele (d) of a particular gene, and normal hearing is due to its dominant allele (D). What percentage of the offspring would be expected to have normal hearing if a normal heterozygous (Dd) dog and a deaf dog (dd) mated ?
Answer:
50%
Explanation:
Answer:
50%
Explanation:
I just did the quiz
List three ways in which
mitochondria and bacteria are
similar.
Answer:
1.The inner folds of the mitochondrial membrane, cristae, are very similar to mesosomes found in bacteria.
2.Electron transport chain is found in the plasma membrane of both bacteria as well as the mitochondria.
3.Ribosomes found in bacteria and mitochondria are 70S in size
How many of the offspring are heterozygous?
please answer this my friend needs help and I want to help her
Answer:
d
Explanation:
Green seed color (G) is dominant over yellow seed color (g). If two heterozygous parents are crossed, what are the resulting phenotypes expressed as a percent?
A) 50% green, 50% yellow
B) 75% green, 25% yellow
C) 50% GG, 50% gg
D) 25% GG, 50% Gg, 25% gg
E) none of the above
Answer:
B) 75% green, 25% yellow
Explanation:
There are three genotypes made from crossing two heterozygous parents (Gg);
GG
Gg
gg
Crossing two heterozygous parents (Gg) results in 50% Gg, 25% GG and 25% gg. Since green (G) is dominant over yellow (g), there would be a total of 75% green and 25% yellow.
I would appreciate brainliest, if not that's ok!
Which of these is the most likely impact of solar prominence on Earth?
Improvement in satellite communication
Increase in severity of hurricanes
Loss of electrical power generation
Stronger GPS satellite signals
Answer:
Loss of electrical power generation.
Explanation:
This is because some prominences break apart and may then give rise to coronal mass ejections, which will cause far more damages to the electrical power being used on earth.
Answer: for all my Flvs students the answer is
LOSS OF ELECTRICAL POWER GENERATION
Explanation:
An ecosystem receives plenty of rainfall, ending a drought which decreases the number of limiting factors in the ecosystem. What will happen to the biodiversity of the ecosystem if this pattern of increased rainfall continues over the next several years?
Group of answer choices
biodiversity will increase
biodiversity will decrease
biodiversity remain the same
Answer:
Biodiversity will decrease
Explanation:
because if the rainfall continues it will make some of the species leave to find a different place to live which will throw the ecosystem of that area off. Hope this helps