Answer:
Human activities affect the carbon cycle through emissions of carbon dioxide (sources) and removal of carbon dioxide (sinks). The carbon cycle can be affected when carbon dioxide is either released into the atmosphere or removed from the atmosphere.
Explanation:
does this help
where is the fertilization in plant take place
Answer:
Fertilization occurs when one of the sperm cells fuses with the egg inside of an ovule. It occurs in ovary of female flower
Explanation:
After pollen grains land on the stigma, a pollen tube grows from the pollen grain, through the style, and into the ovary. Sperm cells inside the pollen grain travel down the pollen tube and into the ovary which contains the ovules.
______________*_______*________________
Stay safe,stay healthy and be blessed.
I put 100 points into this..
Are there any parts of the human body that get oxygen directly from the air and not from the blood?
Answer:
yessssir the cornea gets oxygen directly from the air not the blood
What type of sex change is exhibited by great white sharks and what species survival advantage is provided by this sex change?
please help me:( please
Answer:
1. F
2.T
3.F
Explanation:
Climax community- most stable community that takes hundreds of years to develop. The types of organisms change due to __?__.
competition
random chance
being the luckiest
The diagram below shows the Earth's primary tectonic plates.
Answer:
is it the question: What is the process is show, and how does it affect the movement of tectonic plates?
Explanation:
Then...
When tectonic plates rub against each other they create a mountain or volcano.
Fat under the skin
answer is insulation
Answer:
huh is there any question
Explanation:
What is the difference between a plant cell and a animal cell!
I need from you’re pure knowledge not a copy and paste for the internet.
Answer:
There are a few differences between plant cells and animal cells, such as size, shape, energy storage, proteins, differentiation, growth, the cell wall and plenty more!
Explanation:
Hope this is helpful. If you need more differences or need me to explain let me know!!
which stage of cellular respiration extracts the most energy
a bacteriophage is a type of virus that inficts only a bacterial host cell. a bacteriophage cant cause disease in humans because it
a. does not have the correct surface proteins
b. can only use bacterial DNA to replicate
c. gets destroyed in the human digestive system
d. is able to reproduce without a host cell
please help me!!! its for hw
Answer:
100% white cows if i understand what theyre asking for
Explanation:
Which animal has a bilaterally symmetrical body plan?
A jellyfish.
A lobster.
Coral.
2. The text explains that selective breeding involves breeding animals or plants for
specific desirable traits. For example, humans bred different types of dogs to
accomplish certain jobs. Farmers breed chickens for having more meat and laying a
greater amount of eggs. Cattle are often selectively bred either for more meat or for
more milk production. The text also notes that breeding animals for size and strength
interferes with natural animal processes.
Based on this information presented in the text, who benefits from the traits different
animals are bred for?
A. humans breeding the animals
B. the animals being bred by the humans
C. both the humans breeding the animals and the animals being bred by the humans
D. animals not being bred by humans
Answer:
A. the humans breeding the animals
Explanation:
It says in there that it interferes with the natural animal processes so it probably doesn't help the animal, and it also said in there that we have breed for more desirable traits in other words we bred them to be more useful to us and give us benefits.
What happens during the 4 stages of mitosis
Answer:
Mitosis consists of four basic phases: prophase, metaphase, anaphase, and telophase. Some textbooks list five, breaking prophase into an early phase (called prophase) and a late phase (called prometaphase).
1) Prophase: chromatin into chromosomes, the nuclear envelope break down, chromosomes attach to spindle fibres by their centromeres 2) Metaphase: chromosomes line up along the metaphase plate (centre of the cell) 3) Anaphase: sister chromatids are pulled to opposite poles of the cell 4) Telophase: nuclear envelope ...
Explanation:
Brainliest plz trying to level upWhich type of organisms do photosynthesis?
Answer:
producers
Explanation:
hope this helps
Answer: Plants, algae, and a group of bacteria called cyanobacteria are the only organisms capable of performing photosynthesis.
Explanation: Because they use light to manufacture their own food, they are called photoautotrophs (literally, “self-feeders using light”).
Is the following statement true or false?
A trait that is favored in one place or environment may be useless somewhere else.
O True
O False
PLEASE HELP FAST IM TIMED!!!!!
The answer will be false i an sure of it
What do organisms need both processes
I
5. The diagram below shows two kinds of cells.
Font
Arial
Regular
B
Character
A biologist wants to classify protein secretions into groups based on the principal function of the protein.
Which cell would the biologist select to study and why?
SC.912.L. 14.3
Alignment
A. The cell on the left, because it has genetic information organized into chromosomes.
B
B. The cell on the left, because it has organelles that secrete proteins.
C. The cell on the right, because it has free proteins throughout its cytoplasm.
D. The cell on the right, because it has a flagellum that enables movement.
Spaci
10
Bulle
Answer:
c
Explanation:
Heavier female black bears produce more offspring. Which statement describes a genetic factor that might negatively affect a female black bear's reproductive success
Answer:
The bear can digest fruits easily, but has difficulty digesting fats.
Explanation:
Answer:
If the bears started losing weight becuase of food shortage or, The genitecs change so the bear was now much lighter than before.
Explanation:
Just a guess
what do you notice about the size of the two resulting cells?
Answer:
Females generally produce a few but large gametes, whereas males produce large numbers of much smaller gametes.
Explanation:
Which statement correctly describes the significance of meiosis during gamete formation?
Answer:
Explanation:
During sexual reproduction, meiosis generates genetic variation in offspring because the process randomly shuffles genes across chromosomes and then randomly separates half of those chromosomes into each gamete. The two gametes then randomly fuse to form a new organism.
the xx chromosome type is found in__
Answer:
[tex]females \: \: \: \: \: \\ it \: is \: your \: right \: answer \: [/tex]
Which of the following processes does not occur during Prophase II of Meiosis Il?
A. DNA condenses into tightly wound chromosomes
B. The nuclear membrane dissolves
C. Microtubules form
D. Homologous chromosomes pair up
The infection-fighting cells that are produced by the immune system are manufactured in specific places around the body, for example, in the lymph nodes and the spleen. However, an infection can occur anywhere in the body. How do these infection-fighting cells manage to move around the body and get to the sites of infection?
A. There are lymph nodes every few millimeters all over the body.
B. They are excreted and float freely around the body, hunting infections.
C. They are carried around the body in the circulatory system.
D. They are moved around the body as muscles squeeze against them.
Answer:b
Explanation:
3. Which feature is commonly formed
at a plate boundary where oceanic
crust converges with continental crust?
(1) a mid ocean ridge (2) an ocean trench (3) a transform fault (4) new oceanic crust
Answer:
2) an ocean trench
Explanation:
Ocean trench is a commonly formed at a plate boundary where oceanic crust converges with continental crust.
What is Ocean Trench?Long, narrow depressions on the seafloor are known as ocean trenches. These chasms are among the deepest natural places on Earth and the deepest portions of the ocean.
Every ocean basin on the planet has ocean trenches, but the deepest ones encircle the Pacific Ocean as part of the so-called "Ring of Fire," which is also home to active volcanoes and earthquake-prone regions. Tectonic activity, which refers to the movement of the Earth's lithosphere, is what causes ocean trenches.
Ocean trenches in particular are a characteristic of convergent plate borders, which occur where two or more tectonic plates collide. In a process known as subduction, dense lithosphere melts or slides beneath less dense lithosphere along numerous convergent plate borders, forming a trench.
Therefore, Ocean trench is a commonly formed at a plate boundary where oceanic crust converges with continental crust.
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A scientist classified 10 organisms into the same phylum based on their similarities. She further grouped 4 of these organisms together based on the
characteristics they shared. In to which level of classification did the scientist classify the 4 organisms?
a. family
b. genus
c. class
d. order
can some one help plssssss
Answer:
Chemical messages- nervous system
Gases- respiratory system
regulation of the body- endocrine system
Explanation:
What will determine whether or not mutations will be passed to offspring?
How do the homologous chromosomes compare to each other ?
Answer:
The two chromosomes in a homologous pair are very similar to one another and have the same size and shape. Most importantly, they carry the same type of genetic information: that is, they have the same genes in the same locations.
Explanation:
PLEASE answer all these questions if you can. 1 attempt for all
1.) Which of the following is true about prophase?
chromatin changes into chromosome form
all of the choice occur during prophase
chromosomes line up at the equator of the cell
cytokinesis occurs
2.) Which of the following is true about metaphase?
chromatin changes into chromosome form
chromosomes line up at the equator of the cell
all of the choice occur during metaphase
nucleolus disappears
3.) Which of the following describes the products of mitosis?
one cell identical to the parent
cell death
two unique cells
two daughter cells that have identical DNA to the parent
4.) What is the role of the spindle during cell division?
to separate the chromosomes
to break down the nuclear membrane
to divide the cell in half
to duplicate the DNA
5.) In what phase of mitosis are chromosomes first visible?
Interphase
Prophase
Telophase
Metaphase
6.) A centromere
holds two sister chromatids together
is an unduplicated chromosome
is half of a duplicated chromosome
forms the spindle fibers
7.) In which phase of meiosis would you see crossing over occur?
Anaphase I
Prophase I
Anaphase II
Prophase II
8.) Oogenesis produces __ viable cell/s, and spermatogenesis produces __ viable cell/s.
4, 2
4, 1
4, 4
1, 4
9) Haploid gametes produced in males are called sperm.
True
10.) Which of the following best describes a tetrad?
the spindle fibers at the end of telophase I
the four cells resulting from meiosis
homologous chromosomes during prophase I
tetrads are not present in meiosis, they are present mitosis
False
Answer:
1. a
2. b
3. d
4. a
5. b
6. d
7.b
8. im not sure abt this one, sry :(
9. yeah, true
10. c
Explanation:
Pro phase is the starting stage of the division where the cell division begins. Spindle fibers are broken into half and the type of division that is present in gametes is reduction division that is the meiosis. Synapsis occurs during mitosis.
What is synapsis ?It is defined as the stage in which the pairing of the homologous chromosomes take place.
Chromosomes do not line at the equator as the lining of the chromosomes at the equator occurs on the stage of mitosis where it is possible to see the V,J and L shapes of the paired chromosomes. After this stage the exchange of genetic material takes place.Chromatin do not change into chromosomes in the metaphase.
Mitosis is present only to make the duplicate copies of the cell. The identical daughter cells are made when the division of mitosis is taking place in the cell. Chromosomes are first visible in the prophase. A centromere holds two sister chromatids together.
In meiosis crossing over takes place in anaphase 1.
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