why don't mercury and venus have moons
Answer:
Because Mercury and Venus are too close to the Sun and its gravity.
Explanation:
Mercury and Venus do not have moons because of their proximity to the Sun and their specific orbital characteristics.
Both planets are located relatively close to the Sun, and their gravitational interaction with the Sun is strong.
Additionally, their orbits are relatively stable, which means that any small celestial bodies that might have approached them in the past were likely captured by the Sun's gravitational pull or flung out of the solar system.
Unlike outer planets such as Jupiter and Saturn, which have strong gravitational influences and numerous moons, the inner planets like Mercury and Venus have not been conducive to capturing or retaining moons due to their specific orbital dynamics.
Know more about gravitational pull:
https://brainly.com/question/6839945
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Brain liest for who ever fills the entire page out ty:)
Answer:
Hope this helps!!! Pls mark brainiest!!
Explanation:
Name: Elaina King
Date: 12/4/2020
1. The muscular system is composed of specialized cells called muscle fibers. Their predominant function is contractibility. Muscles, attached to bones or internal organs and blood vessels, are responsible for movement. Nearly all movement in the body is the result of muscle contraction. Exceptions to this are the action of cilia, the flagellum on sperm cells, and amoeboid movement of some white blood cells.
2.
Skeletal: It is a form of striated muscle tissue which is under the voluntary control of the somatic nervous system. Most skeletal muscles are attached to bones by bundles of collagen fibers known as tendons.
Smooth: composed of sheets or strands of smooth muscle cells. These cells have fibers of actin and myosin which run through the cell and are supported by a framework of other proteins.
Cardiac: It is an involuntary, striated muscle that constitutes the main tissue of the walls of the heart.
3. Voluntary muscles or striated muscles are those which work according to the one’s desire or are under control, whereas Involuntary muscles are not under one’s control. Biceps muscles, respiratory, alimentary and urogenital tracts are the places where voluntary muscles are found, while abdominal muscles, locomotory muscles, middle ear muscles, Diaphragm are the examples of the involuntary muscles.
4.
1st pic: Cardiac
2nd pic: smooth
3rd: Skeletal
5. Skeletal muscle is metabolically and mechanically maladapted to working as the muscle that causes the heart beat. The cardiac muscle has a much higher capacity to extract oxygen from the blood than any skeletal muscle with a higher mitochondrial density so the skeletal muscle heart would, at rest, be working at very near to its metabolic limits. This would not allow the body to do much exercise. The characteristics of skeletal muscle contraction are not the same as the characteristics of cardiac muscle contraction. Cardiac muscle is essentially a network of muscle fibers where most of the signal to contract is propagated by the fibers themselves and the contraction of the whole muscle occurs. The heart beat entails the whole heart contracting at a slower rate of contraction than skeletal muscle. I would conjecture that the relatively slow concentric beat of the whole heart would be better for pumping fluid than the more rapid beat of skeletal muscle. Nerves stimulate any number of motor units in skeletal muscle which, depending on how many nerves are activated, will allow fine gradations in muscle strength. This kind of control would not be necessary for the heart , so inefficient.
Please help me IDENTIFY THE PHASES OF MEIOSIS
Answer:
1. Anaphase I
2. Anaphase II
3. Prophase I
4. Metaphase I
5. Metaphase II
6. Telophase I
7. Prophase II
8. cytokinesis
Explanation:
The first image or diagram shows that the chromosomes are pulled apart while sister chromatitds are attached to one another. This is took place in the anaphase I phase.
In second diagram the sister chrmoatids are become unattached and moves or pulled towards the opposite poles. It is Anaphase II stage.
In the third image or illustration there is formation of synapsis complex and chiasmata which takes place in prophase I.
In the fourth image the pair of chromosome lined up on the equator this characterstic feature of metaphase I.
In the fifth image sister chromatids are line up on the equator which is take place in metaphase II.
In the sixth image chromosomes reach on opposite ends and formation of nuclear envelope takes place which is take place in telophase I.
The seventh image is showing the condensation of chromosome and adestruction of nuclear envelope as occurs in the prophase II.
Formation of cells and divide into four individual cells is the process of cytokinesis.
Organisms that perform chemosynthesis can be referred to as... (Select all that apply...)
Phototrophs
Heterotrophs
Autotrophs
Chemotrophs
is a hotdog a sandwich?
The illustration below represents the movement of materials involved in a process that is vital for the energy-production and energy-transfer needs of an organism.
Oxygen
Water
Mamm
Glucose Carbon dioxide
In which organelle does this process take place?
Answer:
mitochondrion
Explanation:
The correct answer would be the mitochondrion.
The process of energy production in living organisms happens through oxidative phosphorylation during respiration. The process takes place in the mitochondrion. During respiration, glucose reacts with oxygen to produce carbon dioxide and water while ATP is generated in the process. The ATP represents the energy currency of the cell.
The entire process of respiration can be summarized by the following equation:
[tex]C_6H_1_2O_6 + 6O_2 --> 6CO_2 + 6H_2O + ATP[/tex]
What turns on and off the lac operon
Answer: off: lac repressor, on: CAP
Explanation:
(a) Children planted a seed of a fast growing plant.
How tall did the plant grow above the soil in 28 days?
Answer: LINER SIZE TRANSPLANT WEEK FINISH GROW WEEKS. PPP. PPP. PPP. PPP ... NEW Red Garnet Height: 6 to 8 in. (15 to 20 cm) ...
Explanation:
20 POINTS + A BRAINLIEST!!!
Answer:
its 10 points but it's fine
----------------------
The answer is C
Explanation:
Answer:
I think the answer is C, so sorry if I got it wrong.
Is this equation balanced as written? Why or why not?
N=2 , H=6 N=2 , H= 6
SOMEONE PLEASE HELP ME OUT WITH THIS PLEASE HELP ME!!!
Answer:
I think it's C but it could also be D. In my opinion all of them are complex in their own ways.
Explanation:
What substances does lichen and moss produce that will break down rock?
1.) soil
2.) acid
3.) rust
4.) ice
Identify the organelles in the cell to the right. A b c d e f
Answer:
A) Cytoplasm
B) Chloroplast
C) Plasma membrane
D) Cell membrane
E) Smooth endoplasmic reticulum & Rough endoplasmic reticulum
F) Cell wall
Explanation:
Look at the picture below
8. What makes early
onset Alzheimers more
likely to occur in Down
Syndrome patients? *
Explanation: Scientists believe the increased risk is due to the extra chromosome, chromosome 21, that causes Down syndrome. Persons born with Down syndrome have three copies (instead of the normal two copies) of this chromosome.
1. The type of environment that is suitable for a certain species is its
A. habitat
B. community
C. geographical range
D. population
Answer:
Habitat
Explanation:
Definition: he natural home or environment of an animal, plant, or other organism.
"wild chimps in their natural habitat"
ucia was comparing animal and plant cells under a microscope. She thought that she was looking at plant cells. Lucia asked her science teacher to take a look and see if she was correct. Lucia’s teacher looked at the cells and told her that she was correct. What did both Lucia and her teacher see under the microscope?A.a large nucleus in each cellB.a large vacuole in each cellC.cells that had irregular shapesD.a membrane surrounding each cell
Answer: B.
Explanation:
A large vacuole in each cell because vacuole is only present in plant cells and not animal cells.
PLS ANSWER FAST!
ALL viruses have a
flagella
protein coat
capsid
baseplate
Answer:
This is what the web said:
"All viruses contain the following two components: 1) a nucleic acid genome and 2) a protein capsid that covers the genome."
So the answer is capsid
Hope you have a great day!!
The concentration of the solute in the solution is lower than the concentration inside the cell
When a cell is placed in this solution, more water enters the cell than it leaves it
The concentration of the solute in the solution is higher than the concentration inside the cell
The concentration of the solute in the solution is the same as in the cell
Causes water to move across the cell membrane
Causes a cell to swell
When a cell is placed in this solution, more water will leave the cell than it enters it
Doesn’t change the shape of a cell as the same amount of water enters and leaves the cell
Hypotonic Solution
Isotonic Solution
Hypertonic Solution
Answer:
n The Diary of Anne Frank, the conflict between Peter and Mr. Dussel about Mr. Dussel’s unkind words to Peter’s mother supports the theme that
wartime often brings out the worst in people.
children always tend to defend their parents.
difficult times tend to tear friendships apart.
people are not always as they appear to be.
Explanation:
n The Diary of Anne Frank, the conflict between Peter and Mr. Dussel about Mr. Dussel’s unkind words to Peter’s mother supports the theme that
wartime often brings out the worst in people.
children always tend to defend their parents.
difficult times tend to tear friendships apart.
people are not always as they appear to be.
Please help me out guys it;s pretty simple
Answer:
B.
Explanation:
What benefit does this process give to an organism?
Answer:
increased genetic variation.
Explanation: increased genetic variation
When an organism is classified as an autotroph, these organisms ___.
A. produce their own food.
B. can not move from one place to another.
C. can not produce their own food.
D. move very fast.
Answer:
I believe the answer is A. Produce their own food.
Hope this helped :)
Which label belongs in the region marked X?
O Produces offspring
O Involves meiosis
O Requires spores
O Requires eggs
Answer:
it is A
Explanation:
the person above me is right 'life science Cumulative Exam2021'
A scientist argues that the Sahara Desert used to be part of the ocean. What piece of evidence would best help support her argument?
options:
A:Finding a fossil of a shark in the desert
B:Finding evidence of past earthquakes.
C:Finding a fossil of an arctic plant.
D:No evidence would support it. If it’s a desert now, it’s always been a desert.
IF RIGHT I GIVE BRAINLIST
Answer: A finding a fossil of a shark in the desert .
Explanation: with fossils we can dna test them and trace them back millions of years . If you find a fossil of a shark in the desert a dna test may be conducted and this can prove the point .
HELP PLS !!
QUESTION - Guest mode
Which of the following is evidence scientists use to create the geologic time scale?
Evidence from rock layers worldwide
All of the answer choices
Law of superposition
Evidence from fossils worldwide
Answer:all to the answers
all Explanation:
Genes are passed down from parents to offspring. Tor F
Answer:
True
Explanation:
Enzymes are important catalysts that speed up the rate to chemical reactions in cells. How do they accomplish this?
O A. by lowering the required activation energy for the metabolic reaction
O B. by preventing molecules from colliding
O C. by providing all the proteins required for a metabolic reaction
OD. by raising the required activation energy for the metabolic reaction
Answer: C
Explanation:
4. Assume that producers in an ecosystem have 1,000,000 kilocalories of en
ergy. How much energy is available to primary consumers? How much is available to the quaternary consumers?
Answer:
If an ecosystem has 1,000,000 kilocalories of energy in the producers only 100,000 kilocalories of energy would be available to the primary consumers.
Explanation:
What type of atmospheric conditions does climate describe? (5 points)
Answer: Averge
Explanation:
Where do sperm mature?
A. Vas deferens
B. Urethra
C. Epididymis
D. Seminiferous tubules
Answer: Epididymis
Explanation:
This is where the sperm matures at
Which statement describes streak?
Streak refers to the way light is reflected by a mineral.
Streak is the least accurate way to identify minerals.
Streak is tested by scraping a mineral across a streak plate.
The color of the streak is the same as the color of the mineral.
