Answer:
Lamark suggested that organisms can acquire traits which benefit them without any genetic means. He suggested that a change was gradually introduced into organisms of a species during their lifetime and this change could then be seen in the offsprings.
This idea was wrong because an organisms characteristics cannot change in his lifetime.
The theory of Lamarck's inheritance can be disregarded by our knowledge about hereditary genetics.
Explanation:
this is the non sample question
Answer:
its correct
Explanation:
One morning, your alarm does not go off, and you are late for the bus. You run 6 blocks to catch it at the next stop. When you are almost there, your leg muscles burn and you feel a cramp coming on. Which of the following do your muscles NOT have at this moment?
A. Anaerobic respiration
B. Lactic acid
C. Oxygen debt
D. Aerobic respiration
Answer:
I think it might be A. If not i'm sorry.
Explanation:
If it's correct could you possibly give me a brain crown?
Where is the DNA located in a male sperm cell?
A. In the sperms tail.
B. On the outer membrane of the sperm cell.
C. The sperm cell nucleus.
D. The sperm cell inner membrane.
What is the final destination of the sperm cell? *
A. Another sperm cell.
B. Female sperm.
C. Female egg.
D. Another universe.
Where does the female DNA reside?
A. Egg cell outer membrane.
B. DNA locate throughout the entire egg cell.
C. Egg cell nucleus.
D. Egg cell cytoplasm.
What must the sperm cell do in order to enter the egg cell?
A. Sperm cell must bore a hole through the tough egg cell membrane.
B. Sperm cell releases a special toxin in order for it to penetrate the outer membrane.
C. Knock three times on the outer membrane.
D. Sperm cell releases a special enzyme in order for it to penetrate the outer membrane.
Answer:
1. c. the sperm cell nucleus
2. c. female egg
3. c. egg cell nucleus
4. d. sperm cell releases a special enzyme in order for it to penetrate the outer membrane.
There are two main groups of flowering plants: monocots and dicots. One of the differences between the groups is the structure of the leaves.
Which statement accurately describes the characteristics of monocot and dicot leaves?
Monocot leaves have branched veins, while dicot leaves have straight veins.
Monocot leaves are like needles, while dicot leaves are flat.
Monocot leaves have straight veins, while dicot leaves have branched veins.
Monocot leaves are flat, while dicot leaves are like needles.
Answer:
its C
Explanation:
Answer:
c
Explanation:
plssss plsss help, this is like the simplest of the simplest no cap
Answer:
C
Explanation:
The reason being is that plants take in carbon dioxide, and exhale oxygen, humans and flatworms inhale oxygen, and breathe out carbon dioxide.
Which statement BEST describes how mutations are related to evolution?
There is not a strong relationship between mutations and evolution
Natural selection causes evolution, which causes more mutations to appear
in the DNA of the species.
Mutations are changes in DNA that produce weaker organisms that die, so
these are eliminated by evolution.
Mutations lead to new genes, which may have an advantage over the old
forms, causing the species to evolve
Answer:
Mutations are changes in DNA that produce weaker organisms that die, so
these are eliminated by evolution.
Explanation:
Answer:
D) Mutations lead to new genes, which may have an advantage over the old forms, causing the species to evolve.
Explanation:
I took the usatestprep!
How do light reactions help the Calvin cycle
A. They break down macromolecules
B. They provide photons
C. They create hydrogen ions
D. They provide energy carriers
Answer:
They provide energy carriers
Explanation:
Fitz loves growing flowers for his mom and friends. Her favorite flowers, roses, are red roses(RR), blue roses (R’R’), and purple roses (RR’). What type of inheritance pattern is this? What would happen if Fitz crossed a blue rose with a purple rose?
Answer:
They would Mix?
Explanation:
This is a really good question if they don't mix then i guess they'd have 50% chance of being blue and 50% chance of it being purple
R R P U R P L E
_________
R | RR | RR |
_________
R | RR | RR |
_________
B
L
U
E
Identify and explain what the labeled points (A, B, and C) on the diagram. Then infer what the bottom line
segment between the time period of 17 and 25 represent?
Answer:a
Explanation:
Which of the following is NOT a requirement for photosynthesis to occur?
A. Carbon Dioxide
B. Sunlight
C. Water
D. Glucose
Answer:
glucose
Explanation:
glucose is made during photosynthesis, it isn't needed for photosynthesis
Sienna made a chart listing different kinds of mollusks.
Which headings correctly complete the chart?
X: Sea Urchins
Y: Gastropods
Z: Cephalopods
X: Bivalves
Y: Cephalopods
Z: Gastropods
X: Gastropods
Y: Cephalopods
Z: Bivalves
X: Cephalopods
Y: Sea Urchins
Z: Gastropods
Answer:
Im pretty sure its C. But correct me if im wrong
X: Gastropods
Y: Cephalopods
Z: Bivalves
Explanation:
Answer:
The answer is C
Explanation:
According to your equation, what isotope remains after the alpha decay of uranium-238?
Answers:
thorium-234
Explaination:
Isotopes are defined as the variants of a particular chemical element obtained by radioactive decay which makes it differ in neutron number and nucleon number but have the same number of protons in each atom.
Uranium-238 produces thorium-234 by alpha decay. alpha particle is a helium nucleus which carry 2 neutrons andn 2 protons with the mass number 4. In alpha decay, nucleus emits alpha particles which tranforms or decay into an atom with a mass number 4 less and an atomic number 2 less.
The equation for alpga decay is attached below:
Hence, the isotope is thorium-234 .
Alab technician needed to make a wet mount slide of their cheek cells. The tech made
his slide and placed it on the microscope stage. Then he got ready to view his cheek
cells by following these procedures.
1. Looking through the eyepiece, the technician adjusted the diaphragm so field of
vision was lit.
2. The technician looked at the stage from the side and lowered the body tube so the
high power objective was almost touching the slide.
3. Looking into the eyepiece, he very slowly turned the coarse adjustment to bring the
cells into focus.
What suggestion would you make to the technician to CORRECTLY use the microscope
to view his cheek cells?
do not look at the stage when lowering the body tube
The question is incomplete as it does not have the options which are:
A) close the diaphragm
B) start with the low power objective
C) do not look at the stage when lowering the body tube
D) start with the body tube raised and lower it while looking through the eye piece
Answer:
Option-B
Explanation:
In the given question, the technician is trying to observe the cheek cells in the light microscope. The person prepares the wet slide of the sample and tries to observe the sample using the protocol provided in the question.
In these options, the technician is not following the rules to observe the slide in the microscope that always observes the specimen using an objective lens with lower power. Then increase the power of the objective lens to increase the magnification of the sample.
Thus, Option-B is the correct answer.
The graphic organizer above shows the levels of organization described in paragraph 2. Based on the passage, which label goes in box (2)?
A.Organism
B.Organ
C.Organ System
D.Tissue
Considering the hierarchical level of complexity, bix (2) would be organ.
Level of complexity of living organismsThe level of complexity of living organisms follows the order: cell, tissue, organ, organ system, organism.
The order is from the simplest to the most complex with the cell being the most basic unit of all living organisms.
Thus, starting from the simplest, what should be in box (2) will be organ.
More on levels of biological organization can be found here: https://brainly.com/question/6070269
Organ System goes in box (2). Hence the correct option is c.
The graphic organizer mentioned likely describes the hierarchical levels of biological organization, with box (2) corresponding to "Organ." In the context of biological organization, an organ is a higher level of structure composed of different tissues working together to perform specific functions.
This level typically represents a more complex structure than individual tissues but is still part of the larger framework that includes organisms, organ systems, and tissues. The placement of "Organ" in box (2) suggests that the graphic organizer is illustrating the progression from individual tissues to higher-order structures, providing a visual representation of the hierarchical organization within living organisms.
For more questions on Organ System
https://brainly.com/question/545314
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Write a couple paragraphs about how producers (plants) get their energy from the sun and animals that eat them take their energy and other animals eat them.
Answer:
First, plants receive and trap the sunlight using chlorophyll, the green substance that make up the color of the plants. Water (H2O) and carbon dioxide (CO2) from humans are also needed. The plants make their food (sugars) in this process called photosynthesis.
Second, animals consume the plants and obtain the energy from the plants. Animals cannot survive without plants, for plants produce oxygen and energy. Animals are heterotrophs, while plants are autotrophs. After the animals obtains the energy, they breathe carbon dioxide out.
Lastly, this process repeats over and over again. Plants are very important in animals' lives. This is why everyone wants to stop pollution and plant elimination. All in all, plants and animals rely on each other, and they cannot survive without each other.
Hope this helps!
crop rotation is important because
Answer:
Some plants use a lot of nitrogen.
It increases soil fertility.
Repeated planting of the same crops decreases soil quality.
Which properties of grains determine the texture of rocks? Check all that apply. -feel
-pattern
-color
-shape
- size
Answer:
Pattern shape and size
Explanation:
The properties of grains that determine the texture of rocks may significantly include pattern, shape, and size. Thus, the correct options are B, D, and E.
What do you mean by the textures of rock?The texture of rock may be defined as microstructure refers to the relationship between the materials of which a rock is composed. It is generally categorized as crystalline, fragmental, aphanitic, and glassy.
According to the context of this question, the texture of a rock describes the mutual relationship and packing marshaling of different mineral grains and glassy matter present in a rock. These textures of rock may be determined by the numerous properties of grains.
Therefore, the properties of grains that determine the texture of rocks may significantly include pattern, shape, and size. Thus, the correct options are B, D, and E.
To learn more about the Texture of rocks, refer to the link:
https://brainly.com/question/20606717
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Identify the initial event responsible for the new sweet-sensing gene.
Answer:
A mutation
Explanation:
A mutation is a change in the sequence of an organism's DNA. Mutations can be caused by high-energy sources such as radiation or by chemicals in the environment.
How has the presence of the sweet sensing gene increased in the hummingbird population over time?
Hummingbirds evolved from insect-eating ancestors. The genes that detect the savoury flavor of insects underwent changes, making hummingbirds more sensitive to sugars. These new sweet-sensing genes give hummingbirds a preference for high-calorie flower nectar.
Learn more about How has the presence of the sweet sensing gene increased in the hummingbird? here: https://brainly.com/question/14236000
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The skin, tears, and stomach acid are part of the body's first line of defense against infection. How do scientists classify these defenses?
A. as specific defenses, because they respond to specific physical or chemical properties of pathogens
B. as weak defenses, because they stop only a small percentage of pathogens that threaten the body
C. as nonspecific defenses, because they bar or stop infections without discriminating pathogens from other agents
D. as barrier defenses, because they act like a wall to stop pathogens from invading
Answer:
C. as nonspecific defenses, because they bar or stop infections without discriminating pathogens from other agents
Explanation:
The skin, tears and stomach acid are nonspecific defenses and they are some of the examples of the body's first line of defense. Nonspecific defenses are made up of interferons, chemical barriers (e.g. tears and stomach acid), inflammation and physical barrier (e.g. skin).
These nonspecific defenses defend the body from pathogens through their chemical contents in the body fluid or the tissue.
For example, Stomach acid is made of hydrochloric acid (HCl), HCl is potent enough to destroy pathogens that make its way into the stomach through food; this kind of barrier is a chemical barrier.
So also, the skin is a physical barrier which serve as a defense against pathogens.
Answer:
C. as nonspecific defenses, because they bar or stop infections without discriminating pathogens from other agents
Explanation:
Huntington’s disease is a condition that causes problems of the brain and muscle coordination in some humans. What would most likely be observed in humans who inherit this genetic disease?
A. A decrease in the efficiency of cellular respiration
B. A change in the production of specific proteins
C. An increase in the speed of nerve cells
D. A change in the cellular membranes of muscles
Answer:
D
Explanation:
Answer: D
Explanation: Cuh yeah
Which Biome do we live in?
Taiga (coniferous forest)
Grassland
Temperate deciduous forest
Tropical rain forest
Answer:
It depends on where you live, but I live in a Temperate deciduous forest.
Explanation:
Answer:
Temperate deciduous forest
Explanation:
I got an A
All annelids and arthropods have
All annelids and arthropods possess a segmented body.
All annelids and arthropods share the characteristic of having a segmented body. This segmentation provides increased flexibility and allows for a wider range of motion. Both Annelida, including earthworms, and Arthropoda, such as ants, exhibit this feature. In annelids, segments are more uniform with structures like the intestine extending through most segments.
Many annelids also have chaetae, which are chitinous hairlike extensions that assist in locomotion. Arthropods, on the other hand, possess an exoskeleton and their body segments are often fused into regions known as tagma, with specialized segments performing different functions. Arthropods typically have an open circulatory system, using various respiratory structures such as book gills, book lungs, or tracheal tubes.
Match each of earths spheres to the materials that make up the sphere
Answer:
Earth's Spheres. Everything in Earth's system can be placed into one of four major subsystems: land, water, living things, or air. These four subsystems are called "spheres." Specifically, they are the "lithosphere" (land), "hydrosphere" (water), "biosphere" (living things), and "atmosphere" (air).
Answer:
Ants: Bio
Sky: Atmo
Water: Hydro
Desert: Geo
Explanation:
Which was an advantage for the South at the start of the Civil War?
A) a smaller population
B) an industrial economy
C) a well-ed army
Answer:
C) a well-ed army.
Explanation:
They had better generals and soldiers. They were also fighting a defensive war.
There is no____in Rna.____pairs with adenine instead.
A.guanine.cytosine
B.uracil,thyme
C.adenine,uracil
D.thymine,uracil
Answer:
The answer is D.
Explanation:
There is no Thymine in RNA. Uracil pairs with Adenine instead.
A particular species of seabird has a mutation in the gene pool that gives it a bigger beak. Individuals with this mutation can more easily break open clams and other mollusks for food. They can also defend themselves better against predators. Over time, most of the organisms in the population have big beaks. What’s this an example of? A. homeostasis B. low genetic variation C. natural selection D. neutral mutation
Answer:
C, natural selection
Explanation:
Mark brainliest please.
Answer:
c
Explanation:
Please I need an answer I need help.
Use the drop-down menus to complete the statements.
Two people, Steve and Nancy, both live in Boston, Massachusetts.
Steve and Nancy are .
Since they are both human, they are part of the same .
Because they both live in Boston, they are in the same .
Answer:
Organisms
Species
Population
Explanation:
Answer:
organisms
species
population
are viruses living or nonliving
Answer:
they are nonliving
Answer:
Explanation:
They are both
Which of the following results in greater genetic variation in offspring?
A. meiosis
B. both mitosis and meiosis
C. mitosis
D. neither mitosis nor meiosis
Answer:
A. meiosis
Explanation:
Meiosis results in greater genetic variation in offspring compared to mitosis due to processes like crossing over and independent assortment. Mitosis produces genetically identical cells, while meiosis combines genetic material from two parents. Meiosis II is similar to mitosis, and fertilization leads to the formation of a diploid cell.
The greater genetic variation in offspring results from meiosis, not from mitosis. Equal segregation of alleles into daughter cells happens during both mitosis and meiosis. However, genetic variation is specifically introduced during meiosis through mechanisms such as crossing over, independent assortment, and the combination of genetic material from two different parents during fertilization. Mitosis produces genetically identical cells, hence it does not lead to genetic variation.
The part of meiosis that is most similar to mitosis is meiosis II, because it is essentially a mitotic division of the haploid cells formed during meiosis I. Furthermore, the event that leads to a diploid cell in a life cycle is fertilization.
there are some tissues in plant that __________ throughout their life.
Answer:
There are some tissues in plants that divide throughout their life.
Explanation:
These tissues are localized in certain regions. Based on the dividing capacity of the tissues, various plant tissues can be classified as growing or meristematic tissue and permanent tissue .
Answer:
There are some tissues in plants that divide throughout their life.
Explanation: