Answer:
Answer:A
Explanation:
6.which of the following is NOT a main part of the cell?
A cell membrane
B. cytoplasm
C. nucleus
D. ribosome
Explanation:
Its answer is ribosome
What groups of organisms are most in danger of extinction?
A. Those with small population
B. Those that migrate or need special habitats
C. Those with large populations that breed quickly
D. Both a and b
Explanation:
D.Both a and B
As organisms with small population and those who migrate and need special habitat are most in danger of extinction.
The group of organisms that are in danger of extinction is those that have small populations and those that migrate or need special habits. So the correct option is D.
What is the extinction of species?
In biology, extinction refers to the extinction or death of a species. Extinction happens when a species' numbers are reduced due to evolutionary changes in its members, such as genetic inbreeding, poor reproduction, and population decline, or due to environmental factors like habitat fragmentation, climate change, natural disasters, and overexploitation of the species for human use.
The majority of species that have ever existed on Earth have gone extinct, but the fossil record indicates five very significant extinctions, known as mass extinction events, each of which resulted in the extinction of enormous numbers of species. The bulk of extinctions, which happen continuously and are described as background extinctions, are separated from these glaring decreases in the variety by the term "mass extinction."
Therefore, the correct option is D.
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HELP ME PLS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Compare the data shown in the table. What reasonable conclusion can be made from the information given?
The concentration of urea in g per 100 cm3 in part A is 0.03, and in part C is 2.00.
How many times more concentrated is the urea in part C compared with part A?
Cell that has a nucleus but not a wall would best be described as
Answer:
organell
Explanation:
Answer:
Animal cell
Explanation:
Animal cells do not have a cell wall but have a nucleus
today's midterms and I just want to say good luck to you all. (we're doomed)
Answer:
lol, good luck dude ur gonna need it.
What impact does an increase in temperature have on the rate of a chemical reaction?
A) Temperature has no effect on the rate of a chemical reaction
B) It decreases the rate of the reaction
C) It increases the rate of the reaction
Answer:
C) It increases the rate of the reaction
Explanation:
Hope this helps!
When we place a teabag in hot water, the water takes on a brownish colour. Explain which process has taken place.
Answer:
diffusion
Explanation:
the particles form the tea are moving from an area of high concentration of tea to a low concentration of tea. If you want to be even more speficic this is osmosis; the diuffuion of partcles in water
hope this helps :)
When a biological vector is used, which process is used to ensure there are large amounts of DNA?
Answer:
Cloning
Explanation:
It makes the most sence
Answer:
cloning
Explanation:
i looked it up
have a great day!
To increase memory, the author recommends that a
person
А
get fresh air and exercise.
B
spend time indoors at the library.
С
sleep six hours every night.
D
memorize homework assignments.
Answer:
Option B and D Best Support The Statement
Explanation:
To Increase yourself in knowledge one must go to the library and of course memorize their homeworks
You're eating a bowl of
fruit but you're starting to
feel full.
Answer:because it has low energy density an lots of fiber it helps you feel full longer
Explanation: fruit recommended
Based on the description of DNA, given in the Do Now, what could be the nucleotide composition of a DNA double helix? 90 points 20% adenine, 20% guanine, 30% thymine, 30% cytosine 60% adenine, 20% thymine, 10% guanine, 10% cytosine 20% adenine, 20% thymine, 30% guanine, 30% cytosine 60% adenine, 20% guanine, 10% thymine, 10% cytosine
Answer:
20% adenine, 20% thymine, 30% guanine, 30% cytosine
Explanation:
Edwin Chargaff stated in his rule that, in a DNA molecule, the amount of purine bases (Adenine and Guanine) should equate the amount of pyrimidine bases (Cytosine and Thymine). Mathematically, this means that;
A + G + C + T = 100%
Where;
% Adenine base = % Thymine base
% Guanine base = % Cytosine base
Hence, according to this question, the DNA molecule described will contain
20% adenine = 20% thymine,
30% guanine = 30% cytosine
20% A + 20% T + 30% G + 30% C = 100%
What describes G and why they face the watery inside and outside of the cell
Answer:
Because they are hydrophilic
Explanation:
The cell membrane is made up of a phospholipid bilayer. The phospholipid bilayer is made up of an arrangement of phosphate heads, which are (attracted to water) hydrophilic, and fatty acid tails, which are hydrophobic. (repelled by water).
Because they are attracted to water, the phosphate heads face the outside of the cell, where the water is
Consumers, or heterotrophs, take in food made by other organisms. Then they break apart the food to release its energy. How do these actions of consumers contribute to the carbon cycle?
A. Eating and breaking apart food converts carbon to other elements.
B. Eating and breaking apart food converts other elements into carbon.
C. Eating food involves taking up carbon dioxide.
D. Eating and breaking apart food releases carbon dioxide as a byproduct.
Answer:
d ? maybe , i just guessed tbh .
Answer: ya it’s D)
Explanation:
Which of the following structures is at the same level organization as the mitochondrion in a plant cell
Answer:
Any other cell organelles would be at the same level of organization as a mitochondria.
Diffusion is the movement of molecules from an area of high concentration of molecules to an area with a ____ concentration.
A. Equal
B. Higher
C. Lower
D. None of the above
Answer:
lower
Explanation:
Diffusion is the movement of molecules from an area of high concentration to an area of lower concentration. So, the correct option is C.
What is diffusion?Diffusion is a type of passive transport, this means that it does not require any kind of external energy for movement of molecules. The difference in concentration in two areas gives rise to a concentration gradient. Where, in one area there is high concentration of molecules and in another, there is low concentration of molecules.
If the molecules move from an area of higher concentration to an area of lower concentration, they are moving along the direction of concentration gradient. This is why no additional energy is required. Diffusion is a type of passive transport where molecules move along a concentration gradient.
This is in contrast to active transport where molecules move against the concentration gradient and therefore require external energy.
Therefore the correct option is C.
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what would happen if all countries in the world depended only on wind power?
Answer:
A country getting all its electricity from a combination of wind, solar ... Not only does that make vitamin D a commodity, it also means solar ... Elon Musk became a sensation in South Australia last year after he decided Tesla would build the world's biggest lithium-ion battery ... This didn't happen overnight.
A mother and daughter are both talented pianist. Give an inherited trait and learned trait would lead to this similarity
Answer:
long fingers or slim hands i think would make sense for inherited trait and learned trait would be the mother teaching the daughter how to play piano
how has limiting factors for the ecosystem impacted pythons in the everglades
Answer:
Explanation:
Non-native Burmese pythons have established a breeding population in South Florida and are one of the most concerning invasive species in Everglades National Park. Pythons compete with native wildlife for food, which includes mammals, birds, and other reptiles. Severe mammal declines in Everglades National Park have been linked to Burmese pythons.
The most severe declines in native species have occurred in the remote southernmost regions of Everglades National Park, where pythons have been established the longest. In a 2012 study, populations of raccoons had dropped 99.3 percent, opossums 98.9 percent, and bobcats 87.5 percent since 1997. Marsh rabbits, cottontail rabbits, and foxes effectively disappeared.
The mammals that have declined most significantly have been regularly found in the stomachs of Burmese Pythons removed from Everglades National Park and elsewhere in Florida. Raccoons and opossums often forage for food near the water’s edge, which is a habitat frequented by pythons in search of prey.
Which of the following adaptations enables deciduous trees to produce more food?
a.
thick bark
b.
stretching toward the sun
c.
leaf loss
d.
color change
im pretty sure its b, but im just making sure
Answer:
yes you are correct the answer would be "B"
Explanation:
Guys help!!!!!!!!!! Pleaseeee it’s urgent
Answer:
The answer is b
Explanation:
Role of Lipids and Carbohydrates - Type Lipid or Carbohydrate behind each question. 16. Provide long term energy storage. 17. Provide insulation and protection. 18. Short term energy supply 19. Composes cellulose in trees and plants. 20. Main component of cell membranes 21. Provide a waterproof coating on leaves and feathers. 22. Composes chitin exoskeleton of insects. 23. Act as chemical messengers in the body.
Answer:
16. Carbohydrates
17. Lipids
18. Carbohydrates
19. Carbohydrates
20. Lipids
21. Lipids
22. Carbohydrates
23. Lipids
Explanation:
Carbohydrates are organic molecules composed of carbon, hydrogen and oxygen. Carbohydrates can be classified into three types: monosaccharides (e.g. glucose), disaccharides (e.g., lactose), and polysaccharides (e.g., starch). Cellulose is a carbohydrate where many glucose rings chain together, while chitin is a polysaccharide consisting of chains of modified glucose molecules.
Lipids represent a diverse group of organic molecules that include, among others, fats, waxes, oils, hormones, etc. Lipids play a role by insulating (and protecting) the body. For example, there is a layer of fats beneath the skin which enables to maintain body temperature relatively constant. In animals, lipids constitute about 50% of the mass of cell membranes. These membrane lipids are mainly phospholipids, glycolipids and cholesterol. There are hormones that derive from lipids such as steroid hormones, which derive from cholesterol. Some examples of steroid hormones are testosterone, estrogen and cortisol.
Which characteristic of life is the car missing that leads someone to conclude it is not alive? Please answer in complete sentences
Answer:
Explanation:
a car does not have the ability to reproduce, or maintain homeostasis. Unlike all living things
Which two of the following correctly describe what a gene is?
A packet of genetic information that can be passed down from one generation to the next
A DNA molecule
The entire collection of genetic information in a given species
A section of DNA that provides instructions for building a specific protein
I'm not sure
Answer:
A section of DNA that provides instructions for building a specific protein and A packet of genetic information that can be passed down from one generation to the next
Explanation:
A DNA molecule is not a gene, it is a nucleotide. The entire collection of genetic information in a given species results isn't a gene although many genes comprise what is the genome. Given that those two answers are not what genes are, the other two options are correct.
Rita planted hydrangeas in her and her grandmother’s home. The same batch of seeds produced blue flowers in her home and pink flowers in her grandmother’s home. This made her conclude that the soil in her grandmother’s garden is alkaline while that in her garden is acidic. This is an example of which type of variation? Explain.
Answer:
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Does Soil Affect Flower Color?
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By
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This flower must have grown in neutral soil, with little aluminum.
In some varieties of bigleaf hydrangeas (Hydrangea macrophylla), soil pH determines whether the plant will produce blue or pink flowers. Blooms appear bluest when grown in acidic soil with a pH in the 5.0 to 5.5 range. The same cultivar may sport pink blossoms in soil with a more neutral pH, such as 6.5 to 7.0. Florists control flower color by potting soil mixture
A medical-alert bracelet that informs first responders of a fall or an emergency and this made her conclude that the soil in her grandmother’s garden is alkaline while that in her garden is acidic.
What technology helps her to stay in her home safely?The technology that can help her stay in her home instead of moving to a nursing home is a medical-alert bracelet that informs first responders of a fall or an emergency.
The medical alert bracelet is vital as it will help during emergencies as first responders will be made aware of the grandmother's situation and can then respond on time.The same batch of seeds produced blue flowers in her home and pink flowers in her grandmother’s home.
This is the best option as other options doesn't have to do with emergencies. Rita planted hydrangeas in her and her grandmother’s home. The same batch of seeds produced blue flowers in her home and pink flowers in her grandmother’s home.
Therefore, A medical-alert bracelet that informs first responders of a fall or an emergency and this made her conclude that the soil in her grandmother’s garden is alkaline while that in her garden is acidic.
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where do cells store waste
Answer:
Vacuoles
Explanation:
Make list of farm tool used in:
Land preparation
Cultivation
Plant propagation
Harvesting
Answer:
Land preparation:
This has to do with preparing the land in preparation for planting.
Farm tools used in land preparation include scrapers, ditchers, ploughs, levelers.
Cultivation:
This has to do with loosening the soil for farm use.
Farm tools used in Cultivation include: spade, shovel, rake, etc.
Plant propagation:
This is the act of growing new seeds, using different sources.
Examples of farm tools used in this operation include: propagation knife, hand pruner, sharpening stone, etc
Harvesting:
This is the process of collecting or gathering crops which were planted and have reached age of maturity.
Examples of farm tools used in this operation are hand sickle, darat, gandasa, etc.
The list of farm tools used for various uses include the following:
Land preparation-This involves preparing the land for planting. Examples of farm tools used include tractor, harrows, plough, levelers etc
Cultivation- This involves the process of preparing the soil for planting and crop cultivation. Examples of farm tools used in cultivation include spade, shovel, rake, etc.
Plant propagation- This involves different techniques which are used to grow crops using stems or leaves of plants. Examples of farm tools used include propagation knife, hand pruner, sharpening stone, etc
Harvesting- This involves the process of gathering planted crops which have reached maturity and ready for consumption and other uses. Examples of farm tools used include hand sickle, darat, gandasa, etc.
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Mendeleev developed his table when he placed the elements
in order by increasing atomic number.
TRUE
FALSE
the answer is True
okay
ANSWER PLEASEEEEE TYYY
Answer:
A-D
Explanation:
They both lie on the same ring.
I hope this helps! Happy learning, friend :)
Place a checkmark next to each cellular component necessary to build a bacterial cell:
plasma membrane
cell wall
DNA
nucleus
mitochondria
chloroplast
Golgi apparatus
rouch endoplasmic reticulum
smooth endoplasmic reticulum
flagella
Answer: Cell wall, DNA, plasma membrane
Explanation:
Please mark as brainliest if your want!
The cellular component necessary to build a bacterial cell include:
Cell membraneDNACell wallRibosomesCytoplasmFlagellaWhat is Bacteria?These are micro-organisms which can't be seen with the eyes but with the use of instruments such as microscope.
They lack a nucleus and their DNA is usually found in the nucleoid region of the cell.
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