Answer: In diploid stage the two spores fuse together to form a prothallus which is a diploid stage. Hence, the similarity in the reproductive cycle of fungus and a pteridophyte is that both organisms produce haploid spores and exhibit diploid and haploid stages
Explanation:
Answer:
B
Explanation:
PLATO
What are adaptations and give an example.
Answer:An adaptation can also be behavioral, affecting the way an organism responds to its environment.
Explanation:
An example of a structural adaptation is the way some plants have adapted to life in dry, hot deserts. Plants called succulents have adapted to this climate by storing water in their short, thick stems and leaves.
What is the role of ribosomes in protein synthesis?
A they provide a source of amino acids
B_ they provide a site for transfer RNAs to link to messenger RNA to bring amino acids together
C_ they translate the basic DNA code using transfer RNA
D_ they carry the proteins to their site of action
Why is animal testing bad?
Answer:
Explanation:
Animal experiments may result in clinical trials of biologically faulty or even harmful substances, thereby exposing patients to unnecessary risk and wasting scarce research resources. Animal toxicity studies are poor predictors of toxic effects of drugs in humans.
Answer:
Experimenting with animals is not justified with anything, they practically play with beings that have life, emotions and that feel pain like all living beings.
Advances the experiments that are done on them, are not used, or the purpose is simply lost, as well as their life.
Which of the following is a function of the cell wall?
(Choice A)
A
To package proteins
(Choice B)
B
To carry out photosynthesis
(Choice C)
C
To give the cell a rigid structure
(Choice D)
D
To provide energy for the cell
Answer: (Choice C)
To give the cell a rigid structure
Explanation:
It is in its name! Cell WALL (walls provide structure) ! In addition, choice A refers to the ER, choice B refers to cholorplasts, and choice D refers to the mitochondria (The powerhouse of the cell). This leaves choice B as the the only answer!
Hope this helps :)
Answer:
D.
Explanation:
to provide energy for the cell
What soil properties are influenced by microorganism activity?
Answer:
Microorganism activity affects soil acidity and the amount of organic matter in soil. It also affects the nutrient and mineral levels in soil as well as soil structure.
Explanation:
The diagram below shows the Earth's primary tectonic plates.
Answer:
is it the question: What is the process is show, and how does it affect the movement of tectonic plates?
Explanation:
Then...
When tectonic plates rub against each other they create a mountain or volcano.
If a SARS-CoV2 virus were to mutate and become and become better at attaching to respiratory cells, how would natural selection lead to this mutant virus becoming the dominant virus type? Use the four steps of natural selection in your response: overpopulation, genetic variation, competition, differential reproductio.
Answer:
Mutations leading to the better attachement of virus to the host cell would allow the virus to spread the infection and leave more progeny. The reproductive fitness of mutant viruses would allow the mutation to spread.
Explanation:
1. The organisms with same resource requirement compete with each other. Viruses are not living things but once inside the host cell, they behave like living things. Rapid multiplication of virus overpopulate the host cells.
2. Genetic variations are added to the viral progeny by random errors during replication of the viral genome. These random variations may impart beneficial trait, harmful feature or remain neutral. If a random mutation in the SARS-CoV2 virus allows it to adhere better to the cells of the respiratory system, the virus would be better able to infect these cells to spread the infection. Once inside the host cells, the mutant virus would leave more progeny. On the other hand, the wild type virus that lack this mutation would have lesser chances of entering the host cells and may or may not replicate.
3. The progeny of the mutant virus would compete better with the non mutant ones due to the presence of same mutation.
4. Differential reproduction and more progeny of the mutant virus would spread the mutation among the virus.
What is the main idea of this text?
A. Climate change is a complex and unpredictable process involving
feedback loops.
B. Disagreements about climate change have prevented scientists from
finding real solutions to global warming.
C. Wallace Broecker's theory may have been incorrect, but he presented
some worthwhile ideas.
D. Climate change can be completely reversed if carbon dioxide production
is changed.
Answer:
should be b
Explanation:
Answer:
disagreements about climate change have prevented scientific from finding real solutions to global warming
Please can anyone help me ill make you the brainiest, I need help with these questions!
1.How many moles of oxygen react with 10.5 moles of methane?
2.How many moles of methane react with 10.7 moles of oxygen?
3.How many moles of carbon dioxide are produced from 80 moles of methane?
4.How many moles of water are produced from 800 moles of methane?
5.How many grams of oxygen will react with 85 grams of methane?
Answer:
the moles of oxygen react only 1.05 moles
Explanation:
because the formula of methane is CH4 so it has 10 molecule so 10.5 ÷10 =1.05
on what organelle does the process occur ?
Answer:
the chloroplast
Explanation:
The thing that makes a wave a wave is that it___________from one place to another.
A. Transport energy
B. Transports the medium
C. Travels with a vacuum
D. Carries Solids
Answer:
A?
Explanation:
All waves carry energy from one location to another, but they do not move any physical objects. The energy is transferred from one particle to the next, which then oscillates as well. Thus, option A is correct.
What is the energy transport property of wave?The vibration of particles, which transfers energy in waves, causes the particles to travel perpendicular to the wave's horizontal movement. As the particles transition from rest to movement and back to rest, energy is changed between potential (stored) and kinetic (moving) energy.
However, waves do not move mass. By colliding with one another and exchanging energy, the particles “participate” in the wave. Because of this, energy can be transferred even when the particles' average positions remain unchanged.
Therefore, The thing that makes a wave is that it transport energy from one place to another.
Learn more about waves here:
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In a certain flower, Red (R) is dominant over white (r). Complete the Punnett Square for the
following cross:
Mother: rr
Father rr
What percentage of offspring will be Red?
What percentage of offspring will be White?
Answer:
25 cuz thers rrr then R
Explanation:
What are the differences between white blood cells and normal eukaryotic cells?
Answer:
White blood cells (WBCs) are specialized to respond to antigen and produce antibodies as well as undergo phagocytosis in response to toxic stimuli.
WBCs are part of immune system and there are five different kinds with specialized features.
In order to make a cell model, it is best to use a muscle cell and a nerve cell or neuron: there are pronounced structural differences and those are present throughout animal kingdom.
Lower animals ( such as insects, worms etc. ) have different immune system, however, they do have typical neuron and a muscle cell/skin cell (fibroblast). Such cell models are likely to be easy, distinct and bring you good grades without going through much complication and confusions of various organ systems and animal mod
Explanation:
the xx chromosome type is found in__
Answer:
[tex]females \: \: \: \: \: \\ it \: is \: your \: right \: answer \: [/tex]
Heavier female black bears produce more offspring. Which statement describes a genetic factor that might negatively affect a female black bear's reproductive success
Answer:
The bear can digest fruits easily, but has difficulty digesting fats.
Explanation:
Answer:
If the bears started losing weight becuase of food shortage or, The genitecs change so the bear was now much lighter than before.
Explanation:
Just a guess
Climax community- most stable community that takes hundreds of years to develop. The types of organisms change due to __?__.
competition
random chance
being the luckiest
The first organisms on Earth were most like today's
O Autotrophs anaerobic
O Eukaryotes
O Protista
O Heterotrophs aerobic
Answer:
O Autotrophs anaerobic
hope it will help you
Please helppp!!! will give the brainliest it's probably easy
The infection-fighting cells that are produced by the immune system are manufactured in specific places around the body, for example, in the lymph nodes and the spleen. However, an infection can occur anywhere in the body. How do these infection-fighting cells manage to move around the body and get to the sites of infection?
A. There are lymph nodes every few millimeters all over the body.
B. They are excreted and float freely around the body, hunting infections.
C. They are carried around the body in the circulatory system.
D. They are moved around the body as muscles squeeze against them.
Answer:b
Explanation:
I put 100 points into this..
Are there any parts of the human body that get oxygen directly from the air and not from the blood?
Answer:
yessssir the cornea gets oxygen directly from the air not the blood
1.
The bud shown in the diagram below was produced by asexual reproduction. Which process is responsible for the formation of the bud?
2 Asexual reproduction differs from sexual reproduction in that, in asexual reproduction..
(a) new organisms are usually genetically identical to the parent
(b) the reproductive cycle involves the production of games
(c) nuclei of sex cells fuse to form a zygote
(d) offspring show much genetic variation
Answer: 1. Mitosis
2. Answer A.
Explanation:
Stick insects that reproduce asexually are less biologically diverse because they can't evolve as quickly as species that reproduce sexually can. Thus, option A is correct.
What is role of asexual reproduction in evolution?Asexual reproduction, in contrast to sexual reproduction, only contributes to genetic variety in the population if a chance mutation in the organism's DNA is passed on to the progeny.
Evolution can occur gradually. Asexual creatures often evolve relatively quickly following a dramatic mutation and do not need as many generations to accumulate adaptations as do populations that reproduce sexually.
Asexual reproduction has the benefit of allowing for rapid population growth under the right circumstances. You only require one parent. Since you don't require a partner, it is more time and energy efficient.
Therefore, new organisms are usually genetically identical to the parent.
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I
5. The diagram below shows two kinds of cells.
Font
Arial
Regular
B
Character
A biologist wants to classify protein secretions into groups based on the principal function of the protein.
Which cell would the biologist select to study and why?
SC.912.L. 14.3
Alignment
A. The cell on the left, because it has genetic information organized into chromosomes.
B
B. The cell on the left, because it has organelles that secrete proteins.
C. The cell on the right, because it has free proteins throughout its cytoplasm.
D. The cell on the right, because it has a flagellum that enables movement.
Spaci
10
Bulle
Answer:
c
Explanation:
Which animal has a bilaterally symmetrical body plan?
A jellyfish.
A lobster.
Coral.
An allele that is masked when a dominant allele is present?
Answer: an allele that is masked when a dominant allele is present
Explanation: so the answer is yes
Answer:
A non- dominant allele.
Explanation:
Hope this helps
please help me:( please
Answer:
1. F
2.T
3.F
Explanation:
1 Vaccines have been produced to prevent and treat both tetanus and meningitis.
True
False
2 Tetanus is caused by polluted drinking water.
True
False
3 Tetanus can occur in crushing or deep wounds.
True
False
4 Meningitis may be transmitted from one person to another by:
water
sneeze
cough
soil
5 Meningitis most frequently affects:
adults
children
adolescents
women
Answer:
In immunology, an antigen is a molecule or molecular structure, such as may be present on the outside of a pathogen, that can be bound by an antigen-specific antibody or B-cell antigen receptor. The presence of antigens in the body normally triggers an immune response.
Answer:
1. true
2. false
3. true
4. sneeze, cough
5. children, adolescents
Explanation:
NERVOUS SYSTEM INFECTIONS
FULL QUIZ ANSWERS:
1. Tetanus is caused by polluted drinking water.
FALSE
2. Tetanus can occur in crushing or deep wounds.
TRUE
3. Communication for the senses and muscle coordination in the body is accomplished by the __________ system.
NERVOUS
4. Inflammation of the membrane linings of the spinal column or the brain is called ________________.
MENINGITIS
5. Meningitis most frequently affects:
CHILDREN
ADOLESCENTS
6. Muscle spasms and locked jaw, followed by convulsions, are symptoms of:
TETANUS
7. Vaccines have been produced to prevent and treat both tetanus and meningitis.
TRUE
8. Chlostridium tetani thrives near the surface of the skin.
FALSE
9. Why is tetanus associated with injuries which occur outdoors?
BACTERIA IN THE SOIL CAUSES TEANUS
10. Meningitis may be transmitted from one person to another by:
SNEEZE
COUGH
Witch example of potencial energy being transformed into kinetic energy?
Answer:
Example of potential energy being transformed into kinetic energy will be; Holding a ball in your hands and then throwing it down a hill. The move of the ball as being transformed to kinetic energy.
Explanation:
Potential and kinetic energy are two forms of energy that can be converted into each other. Potential energy is the energy held by an object because of its position relative to other objects or its electric charge. While kinetic energy of an object is the energy that it possesses due to its motion.
Which type of organisms do photosynthesis?
Answer:
producers
Explanation:
hope this helps
Answer: Plants, algae, and a group of bacteria called cyanobacteria are the only organisms capable of performing photosynthesis.
Explanation: Because they use light to manufacture their own food, they are called photoautotrophs (literally, “self-feeders using light”).
What is the social function of exposition text?
Answer:
Exposition is a text that elaborates the writer‘s idea about the phenomenon surrounding. Its social function is to persuade the reader that the idea is important matter.
Explanation:
The thermal energy of matter depends on its _________. a mass. b temperature. c number of particles. d all of the above.