Edexcel GCSE combined science biology paper 2 2020
If you know any questions please tell me just one will do TOT
A piano player uses her hands for brief quick movements. Which muscle fiber type would you therefore predict to be predominant in these muscles
For brief quick movements, which muscle fiber type would you therefore predict to be predominant in these muscles...Fast twitch muscle fiber type.
There are three types of muscle tissue. 1. Cardiac 2. Smooth 3. skeletal muscles. The skeletal muscle are involved in voluntary movements of the body.
Since the player uses her hand in a voluntary way of movement, therefore she makes use of her skeletal muscles.
With regards to the skeletal muscles, there are two types with regards to speed, we have the slow twitch and the fast-twitch.
The fast-twitch muscle fiber aids in fast movement of the body but for shorter periods compared to the slow twitch.
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why do scientist say "Dont panic"
Answer:
Because you could do something irrational
Explanation:
why is cell division important for unicellular and multicellular organisms
Multicellular organisms need cell division to grow and to replace dead or damaged cells and unicellular cell division is the only way single-celled organisms can reproduce. It means the same as cells died.
what traits can make a cell special, why are cells specialized…
(Minimum 5 sentences)
Answer:
They are modified by shape, function, or size. They are made to have certain roles in different parts of our bodies. These cells group together to make/form tissues. Then these tissues make up organs that we obviously need. Different specialized cells include blood cells, nerve cells, and reproductive cells.
Explanation:
what is the first color of the rainbow?
Answer:
red
Explanation:
why it is important to base scientific theories and models on empirical evidence as opposed to other ways of knowing such as religion
Answer:
A theory not only explains known facts; it also allows scientists to make predictions of what they should observe if a theory is true. Scientific theories are testable. New evidence should be compatible with a theory.
Explanation:
which scientist observed tiny pond organisms using his microscope and called them animalcules?
Answer:
scientist Antonie Van Leeuwenheok
If laco were mutated, what effect would this have on lactose metabolism?
Answer:
If lacO were mutated, what effect would this have on lactose metabolism? The repressor would not properly bind to the operator, and the lac operon would be over expressed. How does the cell recognize that lactose needs to be metabolized? Lactose is converted into allolactose, which inhibits the lac repressor.
Explanation:
PLEASE HELP ME QUICK ILL GIVE 85 POINTS
Answer: I think b
Explanation: really sry if I’m wrong
Answer:
9j 7 77777 h7jhoa lllll
Explanation:
why is mechanical digestion of food important?? please help I only need one reason marking brainliest btw
Answer:
it makes the food smaller
Explanation:
Mechanical digestion is a purely physical process that does not change the chemical nature of the food. Instead, it makes the food smaller to increase both surface area and mobility. It includes mastication, or chewing, as well as tongue movements that help break food into smaller bits and mix food with saliva.
4. According to the data in Tables, which planet in the solar system has the greatest
what table?
Explanation:
The plasma state occurs when _____.
o Solids are frozen
o gases are heated
o liquids are boiled
o solids are melted
Answer:
B. Gases are heated
Explanation:
Answer:
solids are melted
Explanation:
pls brainliestt
Lymph is __________. excess tissue fluid that has escaped from arteries excess tissue fluid that has leaked out of capillaries excess blood that has escaped from veins
Answer:
Excess tissues fluid that has leaked out of capillaries.
Those who argue that biology and genetics have the strongest influence on development emphasize ________.
Those who argue that biology and genetics have the strongest influence on development emphasize nature.
What are the influence of the nature in the development?The natures refers the hereditary factors or genes of the child.It helps in building a child's personality traits.It also defines the child's physical appearance.The biology influence development by the gene. One gene cane interact with other gene and environment in which some dominantThe biologically determined characteristics (nature) includes certain genetic diseases ,eye color, hair color, and skin color. The other things are also includes like life expectancy and height but it is also depends upon environment and lifestyle of individual.
The biological factors which includes genetic influences , brain chemistry, hormone levels, nutrition and gender.
The five different forces the influenced human evolution like nature selection, random genetics drifts, mutation, population mating structure and culture.
learn about genetics
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Scientists have inserted a gene that codes for resistance to a biodegradable weed killer into a certain plant. Which of the following is the most likely benefit of the gene?
O The plant is more likely to survive when exposed to the weed killer
O The plant will be able to convert the weed killer into fertilizer.
O The plant will be able to produce chemicals to kill weeds around it.
O The plant is more likely to die when exposed to the weed killer.
QUICK PLEASE
Answer:
The plant is more likely to survive when exposed to the weed killer
Explanation:
since it has a gene that is resistant to the weed killer, it wont be affected by it.
resistant means it can defend itself from something
what are the consequences of either an incomplete or absent ""s"" stage of the cell cycle?
Answer:
If a cell has not properly copied its chromosomes or there is damage to the DNA, the CDK will not activate the S phase cyclin and the cell will not progress to the G2 phase. The cell will remain in S phase until the chromosomes are properly copied, or the cell will undergo programmed cell death.
Explanation:
The consequences of an incomplete/absent "S" stage in a cell cycle are ;
A programmed cell death The cell will not move to the G2 phase of the cell cycleThe absence or incomplete "s" stage of the cell cycle occurs when the a cell does not completely copy its chromosomes or when there is a significant damage to the genetic material ( DNA ) of the cell. when any of these abnormalities occurs the "s" phase stage of the cell cycle will not be activated until the cell chromosomes are correctly copied. Therefore the cell will not move to the G2 phase of the cell cycle
Hence we can conclude that The consequences of an incomplete/absent "S" stage in a cell cycle are ; A programmed cell death and The cell will not move to the G2 phase of the cell cycle
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PLEASE HELP ME IM TIMED!
Answer:
its D
Explanation:
which exam are you doing?
One possible result of chromosomal breakage is for a fragment to join a nonhomologous chromosome. What is this alteration called
Answer:
A translocation
Explanation:
According to the dihybrid cross below, what proportion of peas would
be green and smooth?
A) 9/16
B) 1/4
C) 3/8
D) 1/16
Answer: is A. 9/16
Explanation:
Fill out the data table below with the range of each factor that will produce the optimal number of oxygen bubbles.
Answer:
B
Explanation:
help me brainlist if u right.
Not much grass grows on the nesting grounds
Which statement is true about water molecules?
a) The hydrogen atoms do not share electrons
b) Water molecules move randomly around each other
c) Water molecules cannot dissolve many substances
d) The oxygen atom has a negative charge
Answer:
B
Explanation:
i asked my Alexa... it was a good question
Please answer this
Hh
Answer:
Emm... Answer what exactly
17. Which of the following is an acid?
Explanation:
c is an acid I think but it may not be right
What is the thin-walled tube inferior to the uterus, anterior to the rectum, and posterior to the urethra and bladder
Answer:
The vagina
Explanation:
Buzz bugs lay eggs that burrow into polar bear skin write any 2 adaptations which it can have (it’s urgent)
Answer: See explanation
Explanation: They could have cold resistances since they are being born in a cold climate.
1. What is photosynthesis?
Photosynthesis is a process in which...
Answer: Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar.
Explanation: During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds.
Answer: photosynthesis is the process in which plants use sunlight , water and carbon dioxide to create oxygen and energy in the form of sugar .
Explanation: hope it helps you .
the muscle that originates from the superior surface of the pubis around the symphysis is the
PLEASE HELP
Which of these contain
DNA and/or RNA?
Answer:
dna and rna
Explanation:
DNA is a double-stranded molecule, while RNA is a single-stranded molecule. ... DNA and RNA perform different functions in humans. DNA is responsible for storing and transferring genetic information, while RNA directly codes for amino acids and acts as a messenger between DNA and ribosomes to make proteins.Feb 2, 2020