Answer:
Explanation:
An archegonium (pl: archegonia), from the ancient Greek ἀρχή ("beginning") and γόνος ("offspring"), is a multicellular structure or organ of the gametophyte phase of certain plants, producing and containing the ovum or female gamete. The corresponding male organ is called the antheridium.
3. What challenges do older generations face?
Answer:
Health problem. As aging occurs, the more weak and unstable the body gets.
Unporportionate generation distribution. Some older generations are larger than the ones that precede it, thus, making it harder to have the proper resources to take care of older generations.
Technology. It is harder for older generations to be up-to-date on technology. This can make it harder for older generations to function in society properly.
I hope this satisfies your question. Please give brainliest answer!
Explanation:
which muscles are also known as the smooth muscles
Answer:
involuntary muscle
Explanation:
Involuntary muscles are those that cannot be controlled by will or consciousness and are frequently associated with organs that contract and relax slowly and regularly. Because there are no striations when viewed under a microscope, involuntary muscles are also known as smooth muscles or non-striated muscles.
What is the surface temperature of Barnard's Star in Kelvins? (Astronomy)
Answer:
the answer should be 3,100 kelvin.
Explanation:
its surface has very hot flares causing it to be about 3,000 to 8,000 kelvins. this would mean its surface temperature should be around 3,100.
The relatively large number of new mutations that occur in the human genome in each generation is tolerable because: ______________
a. humans have excellent protein repair mechanisms.
b. compared to other organisms, changes in human proteins have relatively small effects on their cells' structures and functions.
c. humans have excellent DNA repair mechanisms.
d. most of the human genome is noncoding DNA, so few mutations affect human proteins.
e. most of the mutations occur in somatic cells, not germ cells.
Answer:
The believe the correct answer is option E.
The relatively large number of new mutations that occur in the human genome in each generation is tolerable because: most of the human genome is noncoding DNA, so few mutations affect human proteins. Therefore, the correct option is D.
What is a human genome?A human genome refers to the complete set of sequences of the nucleic acids that are present in the humans. The human genome contains a relatively large amount of noncoding DNA, which does not code for proteins and is therefore less subject to selective pressures.
Option A, humans have excellent protein repair mechanisms, and Option C, humans have excellent DNA repair mechanisms, are partially true, but do not fully account for the tolerability of new mutations in the human genome.
Option B and E are also not true, as changes in human proteins have relatively small effects on their cells' structures and functions, is not entirely true. Therefore, the correct option is D.
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organisms that belong to the same ___ are most closely related.
Answer:
Family
Explanation:
-------------------1--------2-------------3
Kingdom Animal --Animal ---Animal
Phylum Chordate- Chordate - Chordate
Class Mammal - Mammal- Mammal
Order Primate Carnivore Carnivore
Family Hominidae Felidae Felidae
Genus Homo Panthera Felis
Species Sapiens Leo Domesticus
Organisms 2 and 3 are most closely related because they have the same family name. Organism 2 is a lion, organism 3 is a common housecat, and organism 1 is a human.
I need help fast pls i only have 5 min so pls HELP
Answer:
I think it's c maybe not sure though
HELP HELP HELP I REALLY NEED THIS
Answer:
d
Explanation:
i think since more step
sensory transduction in the auditory system is much like transduction of __________.
Answer:
mechanosensory stimuli.
Explanation:
How are seeds produced
Answer:
From other seeds
Explanation:
They grow more seeds form the one seed
Answer:
From plant reproduction.
Explanation:
Plants produce flowers to make seeds. To make a seed a flower must be pollinated. Pollen from the male part of one flower travels to the female part of another flower where the seeds are made. Most, but not all plants, have both male and female parts inside one flower. The stigma is usually in the centre and the stamens, which produce the pollen, cluster around it. The petals act like an advertisement to attract various animals, which will carry the pollen from one flower to another.
Tidal volume is air ________. Group of answer choices forcibly expelled after normal expiration inhaled after normal inspiration exchanged during normal breathing remaining in the lungs after forced expiration
Answer:
Tidal volume is air *around one half liter*. Group of answer choices forcibly expelled after normal expiration inhaled after normal inspiration exchanged during normal breathing remaining in the lungs after forced expiration
Explanation:
Have a great day!
when preparing pure cultures, dilution is necessary for
Dilution is necessary during pure culture preparation to reduce the bacterial load and allow readable colonies to grow.
Dilution of bacteria culture is carried out in comparison to McCfarlan standard so as to have a decent number of bacteria that will not be too numerous or too little to observe the growth of distinct colonies during culture preparation.
Without dilution, colonies may form but may be too numerous to count. Too much dilution may also lead to no growth in the culture plates.
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Pleaseeeee helpppppp me I need this done now
Answer:
A
Explanation:
I think this is osmosis so basically the side with more molecules will move to the side with less to even it out
Which phase of the cell cycle is longest? What phase of the cell cycle is the shortest?
Answer:
Interphase is the longest and metaphase is the shortest usually
Explanation:
Answer
The longest phase of the cell cycle is Interphase
The shortest phase of the cell cycle is the Mitotic phase
Explanation
In case of cells with a nucleus, the stages of the cycle are divided into two phases: Interphase and the Mitotic (M) phase.
During Interphase the cell grows and makes a copy of its DNA before moving into Mitosis.
During Mitotic phase the cell separates its DNA into two sets to create two genetically identical daughter cells.
What is the difference between weathering and erosion? (Site 1).
Answer:
Weathering and erosion are natural geological processes that act like rocks and soil on the earth's surface, moving and reshaping the earth. Weathering is the breaking down of rocks into smaller pieces by changing the size and structure of the rocks. The forces of nature are largely responsible for this process. Erosion involves processes such as wind, water flow, and ice movement, which results in change from one place to another.
what are the two functional parts of a tRNA
Answer: Transfer RNAs are coded by a number of genes, and are usually short molecules, between 70-90 nucleotides (5 nm) in length. The two most important parts of a tRNA are its anticodon and the terminal 3’ hydroxyl group, which can form an ester linkage with an amino acid.
Explanation:
What virus most relates (in looks) to this picture? Will give brainliest :)
Answer:
it looks like
Explanation:
A(n) _______________ is a small box with a glass lid that catches the heat of the Sun. It is coated with black metal to absorb the heat and insulated to keep heat from escaping.
solar battery
solar cell
solar grill
solar oven
Answer:
Well, its a solar cooker but the anwser is solar oven
Explanation:
what can you do with snowflakes in animal crossing
Answer:
I don't know cause I don't play that but I think is cats
Explain the carbon circle in 5 sentences
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________$$____$$____$$____$$__$$
$$$$$$__$$____$$____$$____$$____$$
$$____$$$$________________$$____$$
$$______$$______________________$$
__$$____$$______________________$$
___$$$__$$______________________$$
____$$__________________________$$
_____$$$________________________$$
______$$______________________$$$
_______$$$____________________$$
________$$____________________$$
_________$$$________________$$$
__________$$________________$$
__________$$$$$$$$$$$$$$$$$$$$
Answer:Carbon moves from the atmosphere to plants.
Carbon moves from plants to animals.
Carbon moves from plants and animals to soils.
Carbon moves from living things to the atmosphere.
Carbon moves from fossil fuels to the atmosphere when fuels are burned.
Carbon moves from the atmosphere to the oceans.
What is the building unit that enters the plant cell organelle membranes?
A -fatty acids
b -ribose sugar
c -simple lipids
d -nucleic acids
Answer:
It's b ribosome sugar
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The building unit that enters the plant cell organelle membranes is ribose sugar. When the ribose sugar enters it has to break down into various substituents.
What is the number of carbons in ribose sugar ?The number of carbons in ribose sugar is 5. It is a pentose sugar.
Fatty acids can not pass through the cell membrane as it is very big in size and because of its very larger size it is nearly not possible to enter through the cell membrane.
Simple lipid are present in the cell membrane that is it is following the fluid mossaic model that is the two layers of lipids are present om the cell membrane where the proteins are present on the outer layer. Various types of proteins are present on the membrane.
Nucleic acid is the part of the genetic material where it is present in the DNA,RNA and various proteins.
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the major chemical constituent of a cell, by weight, is
Answer:
Water
Explanation:
It is 70% of a cell's weight.
what is the answer to 2 x?=2
Answer:
2x=2
/2 both sides
x=1
Brainliest plz
Answer:
X=1
Explanation:
2x=2 or 2 times x equals 2 means x times 2 will give you 2 which is the only number 1 because anything times 1 is that number so 2(1)=2 or x=1
Describe how the chemical energy in ATP is converted into electric potential energy
Answer:
espero ter ajudado boa noite
Explanation:
Descreva como a energia química em ATP é convertida em energia potencial elétrica
what would happen if cells with mutated dna replicated
Answer: Incorrectly paired nucleotides that still remain following mismatch repair become permanent mutations after the next cell division.
Explanation: If they replicated than the entire thing would copy that and would be permanent.
Food Webs and Food Chains Worksheet
1 Look at this food chain.
lettuce
greenfly
ladybird
thrush
cat
a What does the arrow mean in a food chain?
b Name the producer in the food chain
c Name the third trophic level in the food chain.
d Name the tertiary consumer in the food chain
e What is the ultimate source of energy that drives the food chain?
Food chain is network of source energy diagram which means how one organism depends on other organism for thier enegy to alive.
a. Arrow indicates forward direction of food chain how one organism depend on other organism.
b. The producer in the food chain is Lettuce.
c. The third trophic level organism in the food chain is ladybird.
d.The tertiary consumer in the food chain is terthrush.
e. The ultimate source of energy that drives the food chain is lettuce.
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a) In a food chain, arrows show the movement of nutrients or energy from one organism to another. It refers to the direction of transfer of energy or nutrients from the organism being consumed to the organism consuming it.
b) The producer in the diagrammatic food chain is lettuce, followed by green fly, ladybug, thrush and cat. Producers—also called autotrophs—are living things that can make their own food through photosynthesis or chemosynthesis, the process by which sunlight or inorganic substances are converted into energy-rich organic molecules.
c. Ladybird is the third trophic level of the food chain. The term "trophic level" describes the place an organism occupies in a food chain or web, from where it obtains its food and energy. In this scenario the greenfly is the primary consumer at the second trophic level, while the ladybird is the secondary consumer at the third trophic level. Lettuce is the first trophic level in this scenario (producer).
d.Cat is the third largest consumer in the provided food chain. In a food chain or web, tertiary consumers are those species at the highest trophic level. Typically, they are carnivores that prey on other carnivores or secondary consumers.
e) Sun is the primary energy source that powers the food chain. Most ecosystems get their energy mostly from the sun. As the species consumes and is consumed by other organisms, it is passed along the food chain after being captured by producers (such as plants) through photosynthesis.
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what is the difference between a virus and a worm?
Answer:
The primary difference between a virus and a worm is that viruses must be triggered by the activation of their host; whereas worms are stand-alone malicious programs that can self-replicate and propagate independently as soon as they have breached the system.
Explanation:
Which Image shows what the cell would look like in the next step?
5
HELP PLEASE!!
For the question we've all been waiting for: Did the chicken or the egg come first?
Answer:
had to have been something mutated into a chicken right?
the tissue that covers body organs in an example of ___epithelial tissue ____.
A. epithelial tissue
B. nervous tissue
C. connective tissue
D. muscle tissue
The tissue that covers body organs in an example of epithelial tissue.
Epithelial tissue covers the surface of the body and lines the various body cavities and internal organs.There are different types of epithelial tissue:Simple squamous epitheliumStratified squamous epitheliumCuboidal epitheliumColumnar epitheliumCiliated columnar epitheliumGlandular epitheliumBasically all epithelial tissues have a fibrous basement membrane.Their functions are protection, absorption, secretion, etc.Answer:
A. Epithelial tissue
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Doubt clarification - use comment section.
Answer:
It’s about drive, it’s about power, we stay hungry, we devour
Put in the work, put in the hours and take what’s ours
Black and Samoan in my veins, my culture bangin’ with Strange
I change the game so what’s my name? (Rock)
What they gonna get though?
Bigger beaks are dominant to smaller beaks. If a bird with a large beak (Bb) is blown to an island that requires smaller beaks, what is a possible genotype of its mate needed in order to produce an ospring with a smaller beak?
bb maybe................