Complete Question:
Which statement best describes a change that usually takes place in the human body when the heart rate increases as a result of exercise?
Group of answer choices.
A. More oxygen is delivered to muscle cells.
B. Blood cells are excreted at a faster rate.
C. The rate of digestion increases.
D. No hormones are produced.
Answer:
A. More oxygen is delivered to muscle cells.
Explanation:
An aerobic exercise refers to all forms of physical activity that an individual engages in, so as to increase the heart rate (from low to high intensity) in response to the level of oxygen required by any activated or working muscle in the human body.
Generally, aerobic exercise help various individuals to prevent cardiovascular diseases because it makes the heart to beat faster (heart rate increases) to enable it supply more oxygen, which makes the heart to effectively and efficiently pump blood more.
Some examples of aerobic exercise (cardiofitness activity) includes cycling, swimming, jogging, walking, skiing etc.
Hence, the statement which best describes a change that usually takes place in the human body when the heart rate increases as a result of exercise is that more oxygen is delivered to muscle cells.
What cell tissue helps animals move? .
The answer ➪ The tissue that helps animals move is muscle tissue.
Insta: 25k_kem5)
Which male reproductive structure below produces sugary (energy-filled) fluid for the sperm to swim and survive?
A)
testes
B)
vas deferens
prostate
D)
seminal vesicle
testes
i learned this, this year lol
Which season are we currently in? *
Answer:
Still in winter. Spring doesn't start until March 20th
Explanation:
Hope that helps :)
True or false: photosynthesis uses food such as sugar
Answer:
False
Explanation:
Photosynthesis releases glucose (sugar) amongst a couple of other things. It's reactants are sunlight, water, and Carbon dioxide.
A scientist is observing a eukaryotic cell and a prokaryotic cell. Which structure could she only observe in the eukaryotic cell?
a. cytoplasm
b.dna
c.ribosomes
d.the neucles
Answer:
D.
Explanation:
Answer:
c
Explanation:
Brainliest involved!! Help please and thank you
Answer
D
Glycolysis is the process, which occurs in cytoplasm of cell. This is the process which involves the breakdown of glucose to pyruvate. Citric acid cycle and beta oxidation of fatty acids occurs in the mitochondrial matrix, electron transport chain and oxidative phosphorylation occurs in the oxysomes. So, it is NOT a.
It has to be 2 and 3, which is D.
Explanation:
Answer:
A
Explanation:
An increase in breathing rate can be triggered by an increase in the
Answer:
Explanation: carbon dioxide or a decline in oxygen levels in the blood stimulates
Which is a density-dependent factor?
Answer:
Density-dependent factors include disease, competition, and predation. Density-dependant factors can have either a positive or a negative correlation to population size. With a positive relationship, these limiting factors increase with the size of the population and limit growth as population size increases.
Explanation:
Hoped this helped!
What type of bond does a water molecule feature and why?
A polar covalent bond because the electrons shared by the oxygen and hydrogen spend more time with the hydrogen, creating a negative
A.
charge around the hydrogen.
A nonpolar covalent bond because the electrons are shared equally by the oxygen and the hydrogen, resulting in no net charge on any of
B.
the atoms.
A polar covalent bond because the electrons shared by the oxygen and hydrogen spend more time with the oxygen, creating a negative
C.
charge around the oxygen.
Answer:
C
Explanation:
In a DNA strand, 80% of the strand is made up of adenine and thymine. How much adenine, thymine, cytosine, and guanine is made up in the strand
Answer: The perecentage of guanine is 30%
Explanation:
According to the Chargaff's rules the DNA from any cell of all organisms should have a 1:1 ratio (base Pair Rule) of purine bases [for the DNA cytosine, thymine and for the RNA uracil] and pyrimidine bases [guanine and adenine for RNA and DNA]. The amount of guanine should be equaled to cytosine and the amount of adenine should be equaled to thymine. You can follow this rule in both strands of the DNA.
Explanation:
I don't know about the others sorry!
Both the liver and kidneys are organs of the excretory system. How do the two organs work together to complete a task?
Answer:
When the liver has broken down due to harmful substances, its by-products are exerted into the bile or blood. Bile by-products enter the intestines and leave your body in the form of feces. Blood by-products are filtered out through the kidneys and leave the body in the form of urine.
Explanation:
When the liver is damaged by harmful substances, their by-products move into the bile or blood, where the by-products of bile enter the intestines and leave your body as feces and by-products of the blood. -products are filtered through the Kidneys and leave the body as urine.
What is Excretion?Excretion is defined as the process in which metabolic waste is eliminated from an organism, this is done by the lungs, kidneys and skin in vertebrates.
This is in contrast to secretion, where matter may have specific functions after leaving the cell where excretion is an essential process in all forms of life.
Through excretion organisms control osmotic pressure which is defined as the the balance between inorganic ions and water and maintain acid-base balance.
Thus, when the liver is damaged by harmful substances, their by-products move into the bile or blood.
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This type of cell can develop into different types of blood cells in a body. I will give brainiest to anyone who can help me with this
A. ectoderm
B. pluripotent stem cell
C. totipotent stem cell
D. multipotent stem cell
Answer:
c
Explanation:
because thats what I think the answer can be
B. pluripotent stem cell. Pluripotent stem cells are a type of stem cell that have the ability to differentiate into many different types of cells, including blood cells.
What are pluripotent cells?Pluripotent stem cells are a type of stem cell that have the ability to differentiate into many different types of cells, including blood cells. They are "pluripotent" because they can give rise to many different cell types, as opposed to more specialized stem cells, such as multipotent stem cells, which can only differentiate into a limited number of cell types.
Pluripotent stem cells are important because they have the potential to be used for regenerative medicine and to treat a wide range of diseases, such as blood disorders, cardiovascular disease, and neurodegenerative diseases. They can also be used to study early human development and to understand the underlying mechanisms of disease.
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what is the name of the process used to make ATP by cells that have no oxygen available?
Answer:
glycolysis ( anaerobic respiration)
Explanation:
so... um.... i need jus a lil bit of help wit dis
Answer:
commensalistic- you were in the womb
mutualistic-At work
parasitic-living with parents
Explanation:
1)When you were in the womb you took nutrients from your mother but your mom didn't benefit but she wasn't dying either.
2) You do a job, get payed so thats how you benefit. You help your employer by completing work and giving them profit also.
3) Your parents raised you,feed you,buy you clothes ans stuff, spend time at your school events,pay for your utilities while you live with them but you don't really give them much back.
Why must cells divide to stay small or change shape to reduce volume?
O To diffuse substances from an area of higher to lower concentration
To ensure the cell is able to obtain nutrients or remove wastes.
To reduce surface area of the cell for quick movement.
O To move water molecules from areas of high to low pressure
Answer:
if the cell grows beyond a certain limit, not enough material will be able to cross the membrane fast enough to accommodate the increased cellular volume. When this happens, the cell must divide into smaller cells with favorable surface area/volume ratios, or cease to function. That is why cells are so small.
Explanation:
Answer:
To ensure the cell is able to obtain nutrients or remove wastes.
The important point is that the surface area to the volume ratio gets smaller as the cell gets larger. Thus, if the cell grows beyond a certain limit, not enough material will be able to cross the membrane fast enough to accommodate the increased cellular volume That is why cells are so small.
The cell will ____________ in CORN SYRUP because _____________________________________________________.
Answer:
The cell will shrink because water can move in but proteins cannot move out.
Explanation:
Since the egg membrane is semi-permeable, water can move in but proteins cannot move out. If a naked egg is placed in the corn syrup the egg will shrink. This is also due to osmosis, but in the opposite direction. The corn syrup is mostly sugar.
What are the two types of seed plants?
Answer:
The gymnosperms and the angiosperms
I’ll mark you as brainliest!
Answer:
it isn't silent as it changed the amino acids produced
it is a frameshift mutation due to deletion as they all shifted to the left after the first triplet (it was the 4th base from the left the G, or guanine that was deleted)
Explanation:
A body of water, located near Fresh Kills, is highly polluted because rain washes toxic materials from fresh kills into the water. This process is known as___?
Answer:
noooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo
Explanation: i dont know
PLEASE HELP ME WITH SCIENCE WILL MARK BRAINLIEST!
1: What gases are used and expelled by photosynthesis and respiration?
2: Where are the largest concentration of ozone and what value does it have?
3: What happens to the surface of the earth when there is an increase in greenhouse gases?
Answer:
1 Photosynthesis uses CO2 and expels O2 and the reverse for respiration
2. stratosphere where ~90% of it is
3. Less infrared radiation is able to escape from the earth into space and that infrared radiation hits the GHG gases and the radiation is turned into kinetic or heat energy trapping which warms up the earth
Explanation:
Answer:
1. Used by Photosynthesis: CO2 Expelled: O2
Used by Cellular respiration: O2 Expelled CO2
2. Most ozone (about 90%) is found in the stratosphere, which begins about 10–16 kilometers (6–10 miles) above Earth's surface and extends up to about 50 kilo- meters (31 miles) altitude. The stratospheric region with the highest ozone concentration is commonly known as the “ozone layer”
3. The surface of the earth heats up
Explanation:
A student wanted to see if covering a leaf in foil would stop it from producing starch. Why should the student put the plant in a dark cupboard for 48 hours before returning it to the light and starting the experiment?
1. To make the results reliable
2. So that the plant would photosynthesise faster when returned to the light
3. So that any starch already in the leaf was used up by the plant
4. He did that simply
Answer:
4.) He did that simply
Explanation:
I'm just guessing it's 1 because the other answers don't seem reasonable
Answer:
Putting the plant in dark for 48 hours would stop the process of photosynthesis as light is required for it. Photosynthesis produces organic sugars which are stored in form of starch in plants. The absence of photosynthesis would lead to the consumption of all stored starch making the leaf starchless. The correct answer is option D.
Explanation:
One flower is heterozygous red (Rr) and it is crossed with another red (Rr) plant. Use a Punnett square to determine the probability of their offspring being white.
Draw a punnett square
What are some water pollution management strategies, what do you think is the best one and why?
Answer:
There are plenty of things that we as individuals can do to slow down the amount of pollution going into the ocean, these could include not flushing anything down the toilet that won't disintegrate (because no matter where you live, all toilet pipes lead to the ocean), converting plastic use to reusable materials; this could include using reusable straws, water bottles, shopping bags, etc. and of course, when you need to throw plastic out, always recycle. :)
Explanation:
I believe the best way an individual can help the oceans is by converting plastics to reusable or at least eco-friendly products. If everyone made a conscious effort to do this, the oceans would be MUCH clearer.
Hope this helps!
You eat a carrot. ______ of the energy passes from the carrot to you.
Question 1 options:
a little
half
a lot
all (100%)
Plants that have reproductive structures called cones are
A. angiosperms.
B. gametophytes.
C. gymnosperms.
D. sphorophytes.
Plants that have reproductive structures called cones are gymnosperms
Which is the correct sequence of the urine's pathway as it is formed and exited from the body?
urinary bladder, kidney, ureter, urethra
O kidney, urethra, urinary bladder, ureter
O urinary bladder, ureter, kidney, urethra
O kidney, ureter, urinary bladder, urethra
Answer:
Kidney, ureter, urinary bladder, urethra
Explanation:
Kidney, ureter, urinary bladder, urethra is the correct sequence of the urine's pathway as it is formed and exited from the body. Therefore, option (D) is correct.
What is Urinary tract?Urine, which contains wastes and extra fluid, is expelled from the body through the urinary tract, which serves as the body's drainage system. Urine is removed through the urinary tract. In order for normal urination to take place, it is necessary for all of the body parts that make up the urinary tract to cooperate with one another and do so in the appropriate sequence. The component of the body that processes urine and consists of two kidneys, two ureters, a bladder, and a urethra.
Infections can also occur in the urinary tract, and these infections are caused by microorganisms, most commonly bacteria, that enter the urethra and the bladder. These microorganisms are what cause inflammation and infection in the urinary tract. Even though a urinary tract infection (UTI) most frequently takes place in the bladder and the urethra, bacteria are able to travel up the ureters and infect your kidneys if they have the chance.
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plants can increase which of the fallowing in soil??
A.number of rocks
B.amount of minerals
C. organic matter
D. size of mineral
.
I believe the answer is B.
Sorry if wrong.
God bless
Which factor may increase a rabbit population?(1 point)
decrease in space
decrease in temperature
decrease in food
decrease in predators
Answer:
D. Decrease in predators
Explanation:
The lack of predators would cause less death to the rabbit population, with less hunters to kill the rabbits the population will increase and further increase if they reproduce.
The factor that will increase a rabbit population is ( D ) Decrease in predators
Rabbits as primary consumersRabbits are herbivores that feed on nuts and grasses they are primary consumers and are prey to so many secondary and tertiary consumers ( i.e predators ).
A decrease in space will result to lose of habitat and this will decrease the population of rabbits also extreme weather conditions might lead to death of rabbits just like decrease in food will cause starvation and eventual death for rabbits as well.
While a decrease in predators will result in the survival of more rabbits ( i.e increase in population )
Hence we can conclude that The factor that will increase a rabbit population is Decrease in predators.
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Could someone help me?
Every organism has a set of instructions that determines its traits. Which term describes the process through which it receives this set of instructions?
Gene
Heredity
Repetition
Generation
Answer:
B.
Explanation:
How would you describe dominant in a different way then this? In a easy way?
Refers to a trait that appears more frequently than another trait, resulting from interactions between gene alleles.
Answer:
A dominant allele is a variation of a gene that will produce a certain phenotype, even in the presence of other alleles. A dominant allele typically encodes for a functioning protein. The allele is dominant because one copy of the allele produces enough enzyme to supply a cell with plenty of a given product.