Answers
Answer:
true.......
Explanation:
.........
Answer: True.
Explanation: All facts mentioned are true avout plant cells...........
Related Questions
Using this information and rge geologic time scale above, choose the period in which fishes with jaws first appeared.
A. Jurassic
B. Silurian
C. Quaternary
D. Cretaceous
Answers
How have freshwater and salt water fish adapted to deal with osmosis in their respective environments?
Answers
Answer:
Salt water fish are perfectly adapted to their salty environment and need osmosis to live. The replacement fluid taken on to replace the lost water is desalinated by a process known as diffusion. Diffusion allows fish to live in a state of constant osmosis
Answer:
Salt water fish are perfectly adapted to their salty environment and need osmosis to live. The replacement fluid taken on to replace the lost water is desalinated by a process known as diffusion. Diffusion allows fish to live in a state of constant osmosis
Explanation:
Which part of the illustration depicts osmosis
Answers
Answer:
A ● I is the right answer
Explanation:
please mark me as brainliest
Dos condiciones anormales en el hombre, que son las cataratas y la fragilidad de huesos son debidas a alelos dominantes. Un hombre con cataratas y huesos normales cuyo padre tenía ojos normales, se casó con una mujer sin cataratas pero con huesos frágiles, cuyo padre tenía huesos normales. Calcula la probabilidad de: a) Tener un hijo completamente normal b) Que tenga cataratas y huesos normales c) Que tenga ojos normales y huesos frágiles d) Que padezca ambas enfermedades.
Answers
Answer:
La probabilidad de:
a) Tener un hijo completamente normal, cchh = 25%
b) Que tenga cataratas y huesos normales C-hh = 25%
c) Que tenga ojos normales y huesos frágiles ccH- = 25%
d) Que padezca ambas enfermedades C-H- = 25%.
Explanation:
Datos disponibles:
Alelo dominante C expresa cataratasAlelo recesivo c expresa visión normalAlelo dominante H expresa fragilidad de huesosAlelo recesivo h expresa huesos normalesLos posibles genotipos para cada característica entonces son:
CC y Cc ----> Cataratascc -------------> Ojos normalesHH y Hh ----> Huesos frágileshh--------------> Huesos normalesSabiendo esto, podemos deducir los genotipos del hombre y la mujer involucrados en la cruza.
Hombre con cataratas y huesos normales, tiene genotipo C-hhPadre del hombre tiene ojos normales, ccEl padre del hombre es homocigota recesivo, expresando ojos normales. Esto significa que solo pudo heredarle al hijo (el hombre) un alelo recesivo, c. Pero el hombre expresa cataratas, lo que significa que porta también un alelo dominante, probablemente heredado de la madre. Entonces el hombre es heterocigota para el tipo de ojos. Y puesto que tiene huesos normales, sabemos que es homocigota recesivo para esta característica.
Genotipo del Hombre: Cchh
Mujer sin cataratas y huesos frágiles, tiene genotipo ccH-Padre de la mujer con huesos normales, hhEl padre de la mujer tiene huesos normales, implicando que su genotipo es homocigota recesivo y que solo puede heredarle a la progenie alelos recesivos. La mujer tiene huesos frágiles, lo que supone que heredó el alelo dominante de su madre. Puesto que recibió un alelo dominante de la madre y uno recesivo del padre, la mujer es entonces heterocigota para la característica en cuestión. Ella también tiene visión normal, lo que significa que su genotipo para esta característica es homocigota recesivo.
Genotipo de la mujer: ccHh
Sabiendo los genotipos de ambos integrantes de la pareja, podemos realizar la cruza:
Cruza: Hombre x Mujer
Parentales) Cchh x ccHh
Gametas) Ch, ch, Ch, ch (hombre)
cH, ch, cH, ch (mujer)
Cuadro de Punett)
Ch ch Ch ch
cH CcHh ccHh CcHh ccHh
ch Cchh cchh Cchh cchh
cH CcHh ccHh CcHh ccHh
ch Cchh cchh Cchh cchh
F1) Genotipos y Fenotipos:
4/16 = 1/4 = 25% CcHh, Cataratas y huesos frágiles 4/16 = 1/4 = 25% ccHh, Ojos normales y huesos frágiles 4/16 = 1/4 = 25% Cchh, Cataratas y huesos normales 4/16 = 14 = 25% cchh, ojos normales y huesos normales
A blue flower is crossed with yellow flower and produces a green flower. If you cross two green flowers, what percentage of the flowers will be yellow?
Answers
Answer:
I think the chances are 25%
1)What does the term Science means to you as a student?
Answers
Answer: 1 : knowledge about the natural world that is based on facts learned through experiments and observation. 2 : an area of study that deals with the natural world (as biology or physics)
Explanation:
Answer:
Death and Boredom
Explanation:
ZOOM IN IF U CANT SEE
I NEED HELP ASAP!!!
Answers
Answer:
pretty sure it's A
Explanation:
Haven't taken the assessment personally but I do think that it's bringing emphasis to the extinction rate
7 Alice is studying biological molecules. She isolated a molecule and identified the
nucleotide bases adenine, cytosine, guanine, and thymine. Which molecule did
Alice isolate?
F DNA
HIRNA
G mRNA
I TRNA
Answers
1. Which layer is the oldest? Which layer is the youngest? How do you know?
2. What are some characteristics of the organisms in layers 1-6?
3. What are some characteristics of the organisms in layers 7-12?
4. Develop a theory as to how the organisms in this area changed over time.
Answers
Answer:
the youngest layer is 7(middle point) because decomposition must occur in the middle of decomposed materials.the oldest is 12(upper one) because decomposed material are found at the top most of organisms.they are highly decomposed material.they don't decompose easilyThe youngest layer is 7(middle point) because decomposition must occur in the middle of decomposed materials. The oldest is 12(upper one) because decomposed material are found at the top most of organisms. They are highly decomposed material. They don't decompose easily.
What is Decomposition?Decomposition of organic matter is a complex process that involves the breakdown of complex molecules into simpler ones by the action of microorganisms. In the case of the layers mentioned, the higher layers are the oldest because the decomposed material is found at the top of the layer, and it takes a long time for the organic matter to decompose into soil.
The highly decomposed material in these layers is called humus. Humus is a dark brown or black organic substance that is a result of the decomposition of plant and animal matter. It is an essential component of healthy soil as it provides nutrients to plants and helps retain moisture in the soil.
Humus does not decompose easily because it is a stable form of organic matter. It is made up of complex molecules that are resistant to further decomposition. This makes it an important component of soil fertility as it can remain in the soil for hundreds of years, providing a steady source of nutrients for plants.
Overall, the highly decomposed material found in these layers is an important indicator of the age and health of the soil. Understanding the decomposition process and the factors that affect it can help us better manage our soil resources for agriculture, forestry, and other uses.
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On the surface of a plant's roots are thin projections called root hairs. Which of the following best describes the purpose of these root hairs?
They provide protection for the growing roots.
They help anchor the plant to the soil to make it sturdier
They store excess sugar produced during photosynthesis.
They allow for an increase in surface area so more water and nutrients can be absorbed.
Answers
Answer:
second one is the best which describes roots
The main function of root hairs is to absorb water and minerals from the soil.
What is the function of root hairs?The function of root hairs is to absorb water and nutrients from the soil and it sent to the upper parts of the plant. In roots, most water absorption happens through the root hairs.
So we can conclude that the main function of root hairs is to absorb water and minerals from the soil.
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Which of the following DOES NOT regularly use the atmosphere during its process?
A. The Nitrogen Cycle
B. The Water Cycle
C. The Carbon Cycle
D. The Phosphorus Cycle
Answers
If you use a microscope to view an unknown cell, what structure should you look for to tell you if it is a eukaryotic cell?
A Cell membrane
B Cytoplasm
C DNA
D) Nucleus
Answers
Answer:
If you use a microscope to view an unknown cell, should you look for a nucleus option D.) to tell you if it is a eukaryotic cell
Explanation:
In which of the following types of infection will the infected host cell burst?
A lysogenic infection
B prophage infection
C provirus infection
D lytic infection
Answers
Answer:
D) lytic infection
Explanation:
During lytic infection, a virus enters the host cell, makes a copy of itself, and causes the cell to burst, or lyse.
Answer:
its D
Explanation:
lytic infection is the correct answer because the host cell will lyse AKA burst.
Where do most volcanoes form?
A. Near plate boundaries
B. In the middle of tectonic plates
C. Where there is no plate movement
D. On a supercontinent
Answers
Explanation:
Most volcanoes form at the boundaries of Earth's tectonic plates. These plates are huge slabs of the Earth's crust and upper mantle, which fit together like pieces of a puzzle. These plates are not fixed, but are constantly moving at a very slow rate. ... Sometimes, the plates collide with one another or move apart.
Sunny makes a poster showing the levels of organization in the human body.
How can Sunny correct his error? Check all that apply.
Arrow A should point to the organ system.
Arrow B should point to the cell.
Arrow B should point to the organ.
Arrow C should point to the muscle tissue.
Arrow C should point to the organ system.
Answers
Answer:
Arrow B should point to the muscle tissue, Arrow C should point to the organ system.
These are the correct answers, have a nice day! :)
Answer:Arrow B should point to the organ.
Arrow C should point to the organ system.
Explanation: i just did it
I need help on this and the person who answer this correctly gets a BRANLIST(answer if you know)
Answers
Answer:Option A
Explanation:pH decreases with increase in temperature
Come to this question for BIG POINTS!!!!! Hey this is a review but counts a lot of my average. NOT A TEST!!! On mastery connect genetics so if you have Mastery connect check on there. Ignore any answers on there NOT my real answer just a random one. No links(I am prepared to sue) No unhelpful answers ( Prepared to email) only answer if you think you are 100% right.
Answers
What is the correct mRNA transcription of the following DNA sequence? ATGGCACCTTAC
A. UACCGUGGAAUG
B. AUGGCACCUUAC
C. CAUUCCACGGUA
D. CATTCCACGGTA
Answers
Why? None of the other sequences will match up correctly
The process of transcription produces the mRNA sequence from the DNA. The mRNA transcription of ATGGCACCTTAC will be UACCGUGGAAUG. Thus, option A is correct.
What is mRNA transcription?Transcription is the process of the formation of mRNA from the replicated DNA strand of the cell. It produces an mRNA transcript that is a single strand and further codes for amino acids.
The mRNA transcript forms by the base pairing with the DNA template. If the DNA sequence is ATGGCACCTTAC then according to the base pairing rule the adenine (A) pairs with uracil (U) in mRNA, and guanine (G) pairs with cytosine (C). In mRNA, the adenine binds with uracil and not thymine, and hence A pairs with U, whereas the G-C bond remains the same.
The DNA strand: ATGGCACCTTAC
The mRNA sequence will be: UACCGUGGAAUG
Therefore, option A. UACCGUGGAAUG is the mRNA transcript.
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Which resource is renewable?
O A. Diamonds
O B. Coal
O C. Wind
O D. Aluminum
Answers
Answer:
Wind is a renewable energy source.
Explanation: Overall, using wind to produce energy has fewer effects on the environment than many other energy sources.
If H = hairy legs and h = smooth legs. Which of the following represent a
genotype?
(Select all that apply.) *
a) hairy legs
b) smooth legs
c) HH
d) hh
Answers
Answer:
C and D
Explanation:
I think im correct
When an action potential is generated within a motor neuron, ________. When an action potential is generated within a motor neuron, ________. all of the muscle cells within the motor unit are stimulated to relax the muscle cells from a neighboring motor unit will contract every muscle cell of the motor unit is stimulated to contract only select muscle cells within the motor unit are stimulated to contract the muscle cells of the motor unit will occasionally contract
Answers
Answer:
every muscle cell of the motor unit is stimulated to contract.
Explanation:
Stimulus in biology can be defined as an obvious change in either the chemical or physical structure of an organism' environment (either external or internal). Thus, all living organisms (both animals and plants) respond to changes in their environment and consequently, an appropriate response or reaction is made. Also, stimulus arising from within the organism is known as internal stimulus while those from its environment are known as the external stimulus.
In organisms, the specialized cells that detect stimulus are generally known as sensory receptors while a group of these receptors is referred to as sense organ. Therefore, the senses are necessary for behavior because stimuli must be sensed in order to respond.
Stimulus control can be defined as a phenomenon that arises when a living organism responds or behaves in the presence of a stimulus and in another way in the absence of a stimulus.
For example, opening the door of a microwave oven as soon as its timer beeps.
Example II; When your body touches a hot object, you quickly move away and feel some pain subsequently.
Action potentials generates the nerve impulse in a motor neuron.
When an action potential is generated within a motor neuron, every muscle cell of the motor unit is stimulated to contract.
Which of the following Identifies a water link between agriculture and urban need?
the loss of land used to construct new buildings
the loss of income from Import and export of food products
the loss of market value for agricultural products that are over produced
the loss of marshes and bogs that provide sources of freshwater used for drinking
Answers
Answer:
the loss of mashes and bogs that provide sources of freshwater used for drinking.
As the question says about the identification of a water link between agriculture and urban needs.
A source of freshwater is needed to obtain water ; thus loss of mashes and bogs that provide sources of freshwater used for drinking is the answer.
Answer:the loss of mashes and bogs that provide sources of freshwater used for drinking.
Explanation:
Arrange the various crop development stages.
growth of the embryo within the seed coat
the emergence of the plumule or shoot
the emergence of the radicle or root
absorption of water and oxygen through the seed coat by the seed
Answers
Answer:
A D C B
Explanation:
Answer:Absorption
Growth
The emergence of the radicle or root
The emergence of the plumule or shoot
Explanation:
took thw test
7. How does independent assortment affect genetic diversity?
Answers
1. Typically large organisms
Answers
Large organisms include...
Mammals (Mammalia)
Stem-mammals (Synapsida)
Reptiles (Reptilia)
Dinosaurs (Dinosauria)
What is a Structure that no longer has a purpose in an organism is called a. I don’t know the answer pls help
Answers
Answer:
Vestigial structure. Hope this helps :P
Explanation:
Scientists have discovered a fossil skeleton of a whale-like creature that lived in the early Eocene epoch. The skeleton shows an organism with large fore and hind limbs with distinct toes. Fossil skeletons of closely related species from later periods show organisms lacking hind limbs. Which conclusion does this observation best support?
A. Ancestors of whales may once have been able to walk.
B.Ancestors of whales had fewer bones than modern whales.
C. Whales and their ancestors have always been ocean dwellers.
D. Whales and their ancestors have always been the largest living
Answers
Answer:
A. Ancestors of whales may once have been able to walk.
Explanation:
In a family with parents who do not have hemophilia, one son has hemophilia. Who was the carrier of the gene for hemophilia?
*if possible, I also need a Punnett square *
Answers
Answer: All daughters of a man with hemophilia will be carriers
Explanation:
What step in photosynthesis may occur during day and night? A.Light independant reactions B.Light dependant reactions c. Photolysis
Answers
Answer:
a is the answer
Explanation:
Light independent reactions of photosynthesis may occur during day and night.
STAGES OF PHOTOSYNTHESIS:
Photosynthesis is a metabolic reaction undergone by green plants to obtain their food using energy from sunlight. Photosynthesis is a process that involves two major stages: light independent reactions and light reactions. Light dependent reactions occur strictly under light conditions because light is needed to break down water molecules in a process called photolysis. In the light dependent reactions, water is broken down by light to give oxygen gas. In the light independent reactions, carbon dioxide is required.However, light independent reactions may occur during day and night. This is because light independent reactions does not require light to occur.
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In humans, we have ____ pairs of autosomes and ____ pairs of sex chromosomes.
A. 1 and 22
B. 23 and 1
C. 22 and 1
Answers
Answer:
C, 22 pairs
Explanation:
Humans have 22 pairs of autosomes