Answer:
A key difference between presidential and parliamentary systems lies in the power to remove a chief executive or to dissolve the legislature. In parliamentary systems, the chief executive's term of office is directly linked to that of the legislature, while in presidential systems the terms are not linked.
Explanation:
1.- How does photosynthesis contribute to the survival of humans?
2.- Explain the effect cyanobacteria had on the early atmosphere of Earth and the evolution of life?
3.- Suppose chromosomes in skin cells are damaged by ultraviolet radiation. If the damaged gene does not affect the cell cycle, do you think the cell will become cancerous?
4.- How is mitosis involved in the healing of a wound?
5.- How is the cell cycle-related to the growth and maintenance of an organism?
6.- What role does differentiation play in the cell cycle?
7.- Explain the connection between the cell cycle and cancer development?
8.- Must the cell cycle always proceed in the same direction, or is it possible for the cell cycle to proceed in the opposite direction? Explain your reasoning.
9.- Explain how crossing over provides evidence to support the claim that meiosis increases genetic variation.
10.- Why is it important that human gametes have half a set of DNA instead of a full set of DNA?
11.- In what ways is ATP like a fully charged battery?
Answer: By storing carbon above and below the ground, the trees and plants in forests contribute to the production of oxygen as a byproduct of photosynthesis. ... Photosynthesis provides most of the oxygen that humans and animals breathe.
I WILL MARK BRAINLIEST!
Which cell is an onion cell and which is a cheek cell, and why?
A is a cheek cell slide because it is colorless, has a nucleus, and a cell membrane. B is an onion cell slide because it has color, has a nucleus, a cell membrane, and a cell wall.
B is an onion cell slide because it shows each cell with a nucleus, cell membrane and cell wall. A is a cheek cell slide because it shows a cell slide that does not have a cell wall, only a cell membrane as its outermost layer.
B is a cheek cell slide because it has a nucleus, a cell membrane and a cell wall as its outermost layer. A is an onion cell slide because it has a nucleus, a cell membrane and no cell wall.
A is an onion cell slide because it shows each cell with a nucleus, cell membrane and cell wall. B is a cheek cell slide because it shows a cell slide that does not have a cell wall, only a cell membrane as its outermost layer.
Answer:
A is an onion cell slide because it shows each cell with a nucleus, cell membrane and cell wall. B is a cheek cell slide because it shows a cell slide that does not have a cell wall, only a cell membrane as its outermost layer.
Explanation:
If a gene is found only on the X chromosome and not the Y chromosome, it is said to be what?
codominant trait
sex-linked trait
incomplete dominance trait
Answer:
Sex-linked trait
Explanation:
When a gene is present on the X chromosome, but not on the Y chromosome, it is said to be X-linked. X-linked genes have different inheritance patterns than genes on non-sex chromosomes (autosomes). That's because these genes are present in different copy numbers in males and females.
I WILL MARK BRAINLIEST PLEASE HELP!
If the diploid number of an onion cell is 16, what is its haploid number?
Answer:
8
Explanation:
The haploid number is always half of the diploid number so half of 16 is 8
Will mark brainliest if you get this right! What is this?
a black hole?? (if not then welp-)
Which molecules does a cell need from food to make these membrane
Answer: The organic molecules required for building cellular material and tissues must come from food. Carbohydrates or sugars are the primary source of organic carbons in the animal body. During digestion, digestible carbohydrates are ultimately broken down into glucose and used to provide energy through metabolic pathways.
Hope this helps...... Stay safe and have a Merry Christmas!!!!!!!! :D
What height in meters must the student climb in order to reach the top of the hill?
Answer: 256 or 300 sorry if i was incorrect
Explanation:
The student must reach the top of the hill, and this is entirely dependent on the hill's elevation, which varies from one area to the next and is not constant in any particular area.
What is the significance of the hill in the ecosystem?The hill is the highest point on Earth and plays an important role in ecosystems because it can provide a variety of different habitats for plants and animals as well as act as barriers that separate different ecosystems, such as the forest ecosystem present on one side of the hill from the grassland ecosystem present on the other side of the hill, and it is also a depositary of minerals and other resources.
Hence, the student must reach the top of the hill, and this is entirely dependent on the hill's elevation, which varies from one area to the next and is not constant in any particular area.
Learn more about the hill here.
https://brainly.com/question/12559629
#SPJ6
1. Which is the correct order of the stages of the cell cycle? *
Cytokinesis, Mitosis, Interphase.
Cytokinesis, Interphase, Mitosis
Mitosis, Cytokinesis, Interphase
Interphase, Mitosis, Cytokinesis
my best guess would be
→ Interphase, Mitosis, Cytokinesis ←
Explanation:Interphase - stage where the cell prepares for Mitosis. During this stage the cell grows and replicates DNA.
Mitosis - part where the chromosomes are separated and are separated into 2 nuclei.
Cytokinesis - part where cells officially splits into two daughter cells.
Cell cycles are events that involve various series of steps for the cell to grow. It follows the order of interphase, mitosis, and cytokinesis. Thus, option D is correct.
What is the cell cycle?The cell cycle is an important part of the growth and cell division of the eukaryotic cell. It includes interphase comprising the G₁, S (synthesis/replication), and G₂ phase, mitotic phase, followed by cytokinesis and G₀ phase.
The cell spends the majority of its time in interphase where the genetic material undergoes preparations and gets duplicated for the further process. In mitotic division the actual division of the organelles and the nucleic acid takes place.
Mitosis is followed by cytokinesis where the cytoplasm of the cell gets separated to form two daughter cells after the telophase stage. The cell then undergoes the G₀ phase which is the quiescent stage of the cell division where no cell division occurs.
Therefore, option D. interphase, mitosis, and cytokinesis are the correct order of the cell cycle.
Learn more about the cell cycle, here:
https://brainly.com/question/13277036
#SPJ2
According the to Great Lakes food web, if the Mallard Ducks population was removed from the ecosystem it would impact the food web by
A Causing the Great Blue Heron to decrease.
B Causing the Microscopic Plants population to decrease.
C Causing the Grass population to increase.
A food chain is a simplified way to show the relationship of organisms that feed on each other. It’s helpful to classify animals in a simple food chain by what they eat, or where they get their energy.
Green plants, called producers, form the basis of the aquatic food chain. They get their energy from the sun and make their own food through photosynthesis. In the Great Lakes, producers can be microscopic phytoplankton (plant plankton), algae, aquatic plants like Elodea, or plants like cattails that emerge from the water’s surface.
Herbivores, such as ducks, small fish and many species of zooplankton (animal plankton) eat plants. Carnivores (meat eaters) eat other animals and can be small (e.g., frog) or large (e.g., lake trout). Omnivores are animals (including humans) that eat both plants and animals. Each is an important part of the food chain.
In reality, food chains overlap at many points — because animals often feed on multiple species — forming complex food webs. Food web diagrams depict all feeding interactions among species in real communities. These complex diagrams often appear as intricate spider webs connecting the species.
This lesson demonstrates that changes in one part of a food chain or web may affect other parts, resulting in impacts on carnivores, herbivores, and eventually on producers. An example of this might be the harmful effects of pollution. The point that should be made is that when something disrupts a food web, humans should try to understand and minimize the disturbance. Students should also come to recognize that humans, too, are part of this complex web of life.
GIVING BRAINLIEST POINTS!! Please help meeeeee
Answer:
if its a standardized test and you don't know click c
Explanation:
the most common answer on standardized tests is c
HELPP PLEASE THIS IS VERY IMPORTANTT: Scientists on a space shuttle mission studying plant growth would probably see that the plants on the space shuttle do not grow in the same direction and pattern as those on Earth. Scientists working in space would MOST LIKELY be studying the effects of which of the following stimuli on plant growth?
A) gravity
B) oxygen
C) radiation
D) temperature
Nepal is rich in medicinal plants
Answer: well yes but actually yes
Explanation:
Answer:
Yep
Explanation:
Helppp Pleaseee Ill give u pointssss
Answer:
I think it is F.
Explanation:
Answer:
Letter E
Explanation:
Letter F shows a codon, an anticodon is the opposite match for the codon, in this case letter E
A man with blood type A, whose mother was type o, has a child with a woman that has type AB blood. Which blood
types are possible in their children?
Answer:
Ab a o
Explanation:
A man with blood type A, whose mother was type o, has a child with a woman that has type AB blood. Which blood
types are possible in their children AB, a, O.
What is ABO blood grouping ?The blood grouping can be defined by the presence of surface antigens in the red blood cell which are A and B. The gene present on the parent chromosome can determine the blood group.
Blood type A represents to the presence of gene A, and its genotypic expression can be A/A or A/O.
Type B blood group where genotype is represented as B/B or B/O, is due to the presence of a gene containing the B antigen.
AB blood group which is codominant- has one gene for A and another for B, with genotype A/B.
Blood type O is mainly characterized by the absence of surface antigens, behaves like a recessive trait, which only manifests itself in the absence of surface antigens A and B. The genotype is O/O.
For more details regarding blood group, visit
brainly.com/question/2645377
#SPJ2
49. Seeds may be dispersed by which of the following methods?
a. gardeners planting gardens
b. through animal feces
c. on the shoes of people walking through fields
d. by transplanting small plants from one area to another
what is a reproductive strategy?
Answer:
c
Explanation:
1. Tell me if this is true or false. If it is false tell me why. "Cereal grains are an excellent
source of complex proteins."
Answer:
True
Explanation:
The most common cereal grains that are used is wheat, rice, oats, and corn. WHich can all be high in a protein called prolamins, including vitamin D&E, fiber, iron, and other nutrients.
As a star goes through this cycle their _____ changes.
A - luminosity
B - brightness
C - all of these
D - temperature
Answer:
option C. all of these.
Explanation:
The main sequence period is when a star will experience the majority of its life. Helium is currently being created via nuclear fusion from hydrogen. Thus, option C is correct.
What is a complete cycle of a particular star?The main sequence phase, which our Sun is in, will be entered by the star if it is large enough to fuse hydrogen atoms into helium.
The mass of a star determines its life span. The life cycle of an object decreases with increasing mass.
The amount of substance present in a star's nebula, the enormous cloud of gas and dust from which it emerged, determines the star's mass.
The temperature and pressure rise when the material compresses, just as they do during formation. The freshly created heat briefly overcomes the effect of gravity, pushing the star's outer layers outward.
Therefore, As a star goes through this cycle their luminosity, brightness, temperature changes.
Learn more about stars here:
https://brainly.com/question/15301650
#SPJ6
Queen Latifah had success in which of the following professions?
Answer:
The answer is All of the above.
Explanation:
hope this helps!
Queen Latifah is known for having a successful career as an actress, a rapper, and a spokesmodel.
Who is Queen Latifah
Queen Latifah is the stage name for the American actress, rapper, and spokesmodel known as Dana Elaine Owens.
She starred in several movie roles to emerge as one of the most successful actresses in America with different awards to show for it. Some of the movies she starred in include Living Single, Bringing Down the House, Barbershop 2, etc.
She also has several music albums such as All Hail the Queen, Black Reign, etc.
More on Queen Latifah can be found here: https://brainly.com/question/10192585
#SPJ2
ILL GIVE BRANILIST PLEASE HELP
What do chemotherapy and radiation have in common?
a. Both affect healthy cells in addition to cancer cells
b. Both use drugs
c. Both use high-energy waves
d. Both affect only cancer cells
Answer:
I’m not sure if both do the rest but A. is right so ig A.
when a planetary object circles its star it does so in an ellipse. the length of the ellipse is defined as
a) shape
b) ellipticalness
c) eccentricity
d) distance
Answer:
the ellipse of eccentricity
Explain, in detail, the difference between a population and a community
Trees that lose their leaves during winter are called
A. Deciduous
B. Fern
C. Herbacious
D. Woody
E. Evergreen
Answer:
a. deciduous
Explanation:
hope this helps :) have a great day.
Andrea divided a group of a species of insect she found in her backyard into two groups based on antenna size. The insects with short antennae produced offspring with short antennae. The insects with long antennae produced offspring with long antennae and short antennae. Which of the following statements is most likely true?
A
The gene for short antennae is recessive and the gene for long antennae is dominant.
B
Length of antennae is random.
C
The gene for short antennae is dominant and the gene for long antennae is recessive.
D
Length of antennae is not a hereditary characteristic.
Answer:
......mm..............
Some sugar molecules are absorbed from the small intestine into the blood by active transport. Explain why the rate of absorption of these can depend on the concentration of oxygen in the cells lining the small intestine?
Answer:
Because oxygen is the mediator of active transport.
Explanation:
The greater the oxygen, the greater the active transport, since it requires ATP and this energy currency requires cellular respiration.
Where did the plant get the energy it needs to grow? What materials are needed for
growth and where did they come from?
Answer:
It's simple really—plants get the materials they need to grow cheifly from air and water! Sunlight provides the energy plants need to convert water and carbon dioxide (CO2), a major component in air, to carbohydrates, such as sugars, in a process called photosynthesis. Hope this is what your looking for!
Explanation:
Brainliest please?
HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP
I-cell wall
III-chloroplast
IV-vacuole
three structures specific to the plant cell
Plz Help. Number 22.
Answer:
D, controlled by earths gravity
Explanation:
HELP PLS
1st to answer gets brainliest
Why do plants need a transport system?
Why should substances be moved in plants?
Which are the substances that need to be moved?
How does a transport system in a plant function?
Where is food or sugar made in plants?
How do sugar molecules move to different parts of a plant?
Answer:
The transport of food is necessary because every part of a plant needs food for:
Energy
Building its parts
Maintaining its life
Explanation: