Which of these statements about cells is correct?
A. Cells must produce their own food.
B. Adult cells are larger than those in a child.
C. Organisms must have more than one cell to grow.
D. Multicellular organisms can have more than a billion cells.
This science but oh well
Answer:
D is the correct statement
Answer:
D Multicellular organisms can have more than a billion cells.
Explanation:
Explain why the statement “adaptations are a choice” is NOT accurate.
Answer:
because animals/ plants will do instinctively it over a period of time in order for them to survive.
Explanation:
hope that helps : )
7. Which nutrient forms part of the cell membrane?
O fat
O vitamins
O carbohydrate
O protein
What do Coronary artery and coronary veins connect the heart with
Answer:
they connect them with the lungs. this is so the blood can be oxygen rich and ready to be carried to places in the body where it is needed
Explanation:
El factor Rh- (r) en humanos es una característica que se hereda como un factor recesivo. Determine el genotipo de los parentales de las siguientes familias: - 1er caso: Dos padres con RH+ (R) tienen 5 hijos de los cuales 1 presenta el factor Rh- . - 2do caso: Un padre con factor RH+ y una madre con factor Rhtienen 6 niños de los cuales 3 son RH+ y 3 son Rh- - 3er caso: Un padre con factor RH+ y una madre que presenta un factor Rh- tienen 6 niños de los cuales son todos RH+ . Compruebe los resultados en cada caso. Ayúdenme porfa, estoy desesperada
Answer:
Caso: Ambos padres heterocigostos, Rr (Rh+)Caso: Padre heterocigoto Rr (Rh+). Madre homocigota recesiva rr (Rh-)Caso: Padre homocigoto dominante RR (Eh+). Madre homocigota recesiva rr (Rh-)Explanation:
El factor Rh+ es expresado por un alelo dominante que llamaremos R (Genotipo RR o Rr)El factor Rh- es expresado por un alelo recesivo que llamaremos r (Genotipo rr)1er caso: Dos padres con RH+ (R) tienen 5 hijos de los cuales 1 presenta el factor Rh-
si al menos uno de los hijos presenta el factor Rh-, entonces debe haber recibido un alelo recesivo r de cada padre. Por tanto los padres deben ser heterocigotos para el tipo de sangre Rh.
Parentales) Rr x Rr
Gametas) R r R r
Cuadro de Punnett) R r
R RR Rr
r Rr rr
F1) 3/4 =75% de la progenie es Rh+ (RR o Rr)
1/4 = 25% de la progenie es Rh- (rr)
2do Caso: Un padre con factor RH+ y una madre con factor Rh- tienen 6 niños de los cuales 3 son RH+ y 3 son Rh-
Entre los hijos de esta pareja hay algunos que muestran Rh+ y Rh-.
Si la madre es Rh-, entonces su genotipo es rr y solo tiene alelos recesivos r para pasar a la progenie.
Sabemos que el padre es Rh+, lo que indica que en su genotipo hay al menos un alelo dominante R. Puesto que la mitad de sus hijos tiene factor Rh-, podemos asumir que el hombre es heterocigoto para el tipo de sangre (Rr). De los contrario, de ser homocigoto dominante, toda la descendencia seria Rh+. El padre le hereda a la mitad de los hijos el alelo R y a la otra mitad el alelo r.
Parentales) Rr x rr
Gametos) R r r r
Cuadro de Punnett)
R r
r Rr rr
r Rr rr
F1) 2/4 = 1/2 = 50% de la progenie Rh+ (Rr)
2/4 = 1/2 = 50% de la progenie Rh- (rr)
3er caso: Un padre con factor RH+ y una madre que presenta un factor Rh- tienen 6 niños de los cuales son todos RH+
Si la madre es Rh- su genortipo es rr y solo puede heredarle a los hijos alelos recesivos, r.
El padre es Rh+, con lo que inferimos que el genotipo tiene al menos un alelo dominante R. Puesto que todos los hijos de esta pareja son Rh+, podriamos suponer que el padre es homocigoto para el tipo de sangre Rh+, heredandole a los hijos solo alelos dominantes.
Parentales) RR x rr
Gametos) R R r r
Cuadro de Punnett)
R R
r Rr Rr
r Rr Rr
F1) 100% de la porgenie es Rr, expresando el factor Rh+.
(Nota: Cabe aclarar en este último caso que es posible queel padre sea heterocigoto y aún no hayan tenido un hijo Rh-. )
What is the answer to it?
Answer:
Golgi body
Explanation:
A cell organelle is a structure found in a cell that plays a specific role or function. Some of the cell organelles in living cells include nucleus, mitochondria, chloroplast etc. Ideally, the NUCLEUS, which is the organelle that directs the processes of other organelles contain the genetic material called DNA, which is a type of nucleic acid.
However, some organelles like mitochondria, ribosome and chloroplast also contains nucleic acid.
- Mitochondria contains it's own DNA nucleic acid.
- Chloroplast, also contains its own DNA nucleic acid.
- Ribosomes contain RNA (ribosomal RNA and transfer RNA).
How many X chromosomes do males have in somatic cells?
Answer:
one X
Explanation:
Consequently, all of the somatic cells in human females contain two X chromosomes, and all of the somatic cells in human males contain one X and one Y chromosome (Figure 3).
Answer:
one X
Explanation:
Consequently, all of the somatic cells in human females contain two X chromosomes, and all of the somatic cells in human males contain one X and one Y chromosome (Figure 3).
PLS HELP
One important organelle that is found in plants, but not in animals is called chloroplast.
It is the site of _________.
Which of these cell parts serves the same function in plants as the skeleton does in animals?
A. Cell walls
B. Vacuoles
C. Chloroplasts
D. Mitochondria
Answer: i think it is B
Explanation:
plants cells would not not have been able to absorb these minerals ions from the pond by diffusion . explain why not
Answer:t hey cannot be absorbed by diffusion , because the minerals are in very low concentration. Instead, active transport is used. ... Because active transport moves ions against the concentration gradient into the root hair cells, energy is needed.
Explanation:
How did schools in the South respond to the ruling that they needed to integrate?
They refused or sometimes even closed schools instead of integrating
They quickly integrated Black and White schools
White students welcomed Black students with open arms
Southern governors enforced the Supreme Court's ruling
Answer: They refused or sometimes even closed schools instead of integrating
If you had to explain the parts of an animal cell to your younger cousin, what comparison or example could you use for the cell and its organelles?
Answer:
a animal cell it tiny little pieces in the animal bodies
Two difference between axillary bud and terminal bud
please help im in a test
The majority of animals are insects. True/False
Answer:
the answer is false
Explanation:
the majority of animals are not insects
Can you please help me!
Answer:
You have not told us the location tell us this and I will edit my answer. Comment on this so I know.
Explanation:
To answer this question you need to know the range of temperatures is in that location. Then you use that as your answer.
PLS HELP ASAP Select the word that means how easily water can move through a substance. Lesson 2.03 o particles permeability porosity
Answer:
permeability
Explanation:
dictionary definition: the state/quality of a material or membrane that causes it to allow liquids or gases to pass through it
in biology we use this term to describe the cell membrane, it is "semi-permeable" because it allows certain gasses and molecules to pass through
The water can easily move through a substance and it is called permeability. Hence, option B is correct.
What is permeability?The ability of molecules to pass through a biological membrane or barrier is known as biological permeability. Because cell membranes are selectively impermeable, substances cannot pass through the barrier without consideration. Some of the characteristics that affect permeability include polarity, hydrophobicity, charge, size, and shape.
The metabolic activities, survival, and potential use of the cell in both biotechnological applications and physiological systems are all greatly impacted by the cell membrane permeability, which controls the rate of solute transport into and out of the cell.
The water can easily move through a substance when the substance is permeable. Hence, option B is correct.
Learn more about permeability, here:
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13. When each allele in a heterozygous genotype influences the phenotype and
They have both traits associated with the aileles it is called
Answer:
Polygenic Trait
Explanation:
A taits phenotype is influenced by more than one gene. Traits that display a continuous distribution, such as height or skin color, are polygenic.
When we break down glucose, what energy molecule is produced?
the correct answer is adenosine triphosphate or ATP
which is not true about vasular plants ?
A)big size
B) have roots
C) don t have xylem
D)don t have leaves
d
Answer:
D) Don't have leaves
Explanation:
A plant being vascular should have leaves, since they identified by their lignified leaves itself.
Which of the following describes how metamorphic rock forms?
A
Tectonic plate boundaries break apart an existing parent rock.
B
An igneous rock deep in the Earth is exposed to hot material.
C
Molten rock solidifies and hardens on top of the Earth’s crust.
D
A parent rock is baked and melted into liquid rock in the Earth.
An igneous rock deep in the Earth is exposed to high heat, high pressure, and hot mineral-rich fluids, by this process metamorphic rock forms, hence option B is correct.
What is a metamorphic rock?Metamorphic rocks are produced when rocks are exposed to high heat, and pressure, hot mineral-rich fluids, or maybe some combination of these factors, all these conditions are found deep on Earth.
In the deep of Earth, if an igneous rock deep in the Earth is exposed to hot material, this result forms a metamorphic rock.
This is also a result when rocks change their original shape and identity due to high heat or pressure, this pressure is only found deeper in the Earth.
Therefore, if an igneous rock deep in the Earth is exposed to hot material, it results in metamorphic rock.
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Which statement is not true?
A. A virus cannot read its own genes.
B. Bacteria can make proteins identical to those found naturally in humans.
C. The DNA of a bacterium is loos in the cytoplasm.
D. Bacteria grow and replicate quickly.
Answer: i would say C
Explanation:
Adult muscle cells cannot become another type of cell because
Answer: because they will divide
How can vestigial structures also be considered evidence for evolution?
They provide evidence for evolution because they suggest that an organism changed from using the structure to not using the structure, or using it for a different purpose.
Help brainliest involved!!:)
Answer:
the anwser is B. Scrapings from his teeth
Explanation:
hope this helps :)
Answer:
Scrapings from his teeth
Explanation:
He described 'moving animals' in the plaque between his teeth
With complete dominance inheritance, the heterozygotes show a(n) _____ phenotype but with incomplete dominance heterozygotes show a(n) _____ phenotype.
dominant, intermediate
intermediate, dominant
dominant, recessive
lethal, intermediate
Answer:
Dominant, intermediate
identify the four types of tissues that make up the human body
PLS HELP !!!!!
what is a mutation that changes the codon to another codon specifying the same
amino acid, thus causing no change to the resulting protein?
A. Silent mutation
B. Insertion
C. Frameshift mutation
D. Deletion
Answer:
C.Frameshift mutation
transfer of pollen grains from stamen to stigma is called
Answer:
Hey mate....
Explanation:
This is ur answer.....
Transfer of pollen grains from stamen to stigma is called POLLINATION....Hope it helps u!
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anyone know the correct choice to the question?
Answer:
person 1 in row 3's genotype AA or Aa
Explanation:
the trait is recessive (given) which means in order to have it, you must obtain both alleles. in the pedigree, shaded shapes indicate people who have the trait, but person 1 in row 3 is not shaded so their genotype must be AA (dominant) or Aa (dominant leading) and their phenotype would not express the trait, because the dominant allele will "take over"
The small fish is a natural predator of the diving beetle and the heron is a natural predator of the small fish. In an ecosystem, a new resort affected the heron population and caused it to decrease dramatically due to the destruction of their habitat. Ecologists noticed after a while that diving beetles also decreased. What type of interaction is this?
A.) Direct effect interaction
B.) Indirect effect interaction
Answer:
B- in-direct effect interaction
Explanation: