What happens to a spermatid to change it into a sperm cell?
O Meiosis occurs, making a cell with n chromosomes.
The nuclei of two polar bodies fuse, making a cell with 2n chromosomes.
O A tail is added, making the sperm a motile cell.
O Amembrane hardens, making the sperm a nonmotile cell.

Answers

Answer 1
A tail is added, making the sperm a motile cell.

Sperm does not become spermatozoa (what we think of when we think of sperm) until the formation of the tail.

Related Questions

What is the only thing that creates organisms better adapted to their environment?
A. Natural Selection

B. Artificial Selection

C. Small population size

D. Gene Flow

Answers

Answer:

A. Natural Selection

Explanation:

Natural Selection is the only thing that creates organisms better adapted to their environment.

It is based on the Charles Darwin's theory of evolution by natural selection.

Answer:

A. Natural Selection

Explanation:

Natural Selection is the only process that creates organisms better adapted to their local environment/ increases fitness.

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Answers

Answer:

it's d the answer they has ask me that cuestión ay school

Which term describes when individuals leave more offspring than other individuals?


A: natural selection


B: differential reproduction


C: overproduction

Answers

Option B: differential reproduction

Answer:

b:differential reproduction

Explanation:

When individuals leave more offspring than other individuals.

How many copies of the genes.for one feature are in each reproductive cell (the sperm and the egg
A (0)
B (1)
C (2)
D (4)

Answers

2 copies I’m not sure

Why are humans successful in terms of evolution

Answers

We live long lives compared to a lot of animals, we are at the top of the food chain, we are omnivores and have a larger variety of foods we can eat that’ll nurture our bodies

É correto afirmar que a presença de lagartas em espigas de milho se deve:


A - ao processo de geração espontânea comum aos invertebrados.


B - à transformação dos grãos em lagartas.


C - ao desenvolvimento de ovos depositados por borboletas.


D - ao apodrecimento do sabugo e dos grãos.

Answers

Answer:

C - ao desenvolvimento de ovos depositados por borboletas.

Explanation:

Antes de responder a sua pergunta, eu preciso te explicar que esse não é o servidor brasileiro e sim o servidor dos EUA, você deve ter percebido que toda a linguagem do site esta em inglês. Isso significa que você só deve postar perguntas em português no campo "World Languagens" mesmo que a sua pergunta seja de biologia como essa. Caso você não faça isso, a sua pergunta pdoe ser excluída, sem ser respondida.

As lagartas que surgem nas espigas de milho, são resultado do ciclo de vida da lagarta e refere-se ao momento em que os ovos depositados nas plantas de milho pelas borboletas se chocam, liberando as lagartas, que se desenvolverão e virarão novas borboletas.

É impossivel que um grão e milho vire uma lagarta, ou que o sabubo apodrecido pode gerar lagartas. Além disso, o ´processo de geração espontanea é uma teoria cientifica invalida e que não deve ser considerada.

Okay but who's Candice?

Answers

Candice fit in your mouth or the sister of phineas and ferb

The exploration of the mid-Cayman rise is intended to discover _______. a. what life may have been like before the evolution of photosynthesis b. the origins of photosynthesis c. life in shallow, coastal regions d. the chemical composition of undersea mountains Please select the best answer from the choices provided A B C D

Answers

Answer: a. what life may have been like before the evolution of photosynthesis

Explanation:

The mid-Cayman rise is an area that has little light coming in but still has life in it.

Plants are able to provide food for themselves and the rest of us by using photosynthesis to make food. Photosynthesis uses sunlight to make this food.

One would think that photosynthesis was around for as long as plants were around but this is not the case. Life on earth had existed long before photosynthesis became a valuable process to plants.

There is therefore curiosity as to how this life fed itself without using photosynthesis and this is why the life in the mid-Cayman is being explored. The way the life makes food there in the absence of light will shed light on how plants made food before photosynthesis.

Answer:

A

Explanation:

HELP! What evidence indicates that many psychological disorders, such as schizophrenia and developmental
disorders, are biologically and not environmentally based?

Answers

Answer:

Schizophrenia and developmental disorders are traced genetically, and the gene will be found in the biological parents of the person with either schizophrenia or developmental disorders.

Explanation:

Although Schizophrenia can be triggered by environmental factors, or the 'nurture' of childhood development, a person who is not predisposed genetically to schizophrenia will not get the psychological disorder. The same is to be said about developmental disorders such as Autism and ADHD, it is hereditary.

For citation of evidence, I recommend talking about prenatal development, and how toxic substances can alter the development of a fetus, which is proven to lead to some developmental disorders, such as Fetal Alcohol Syndrome.

Answer:

Schizophrenia and developmental disorders are genetically connected, and the gene will be found in either the individual's biological parents or the person suffering from schizophrenia or developmental abnormalities.

Explanation:

Which sequence illustrates a generalized food chain in a natural community?

A. heterotroph > herbivore > carnivore
B. autotroph > herbivore > carnivore
C: consumer > autotroph > carnivore
D. autotroph > herbivore > autotroph

Answers

The correct answer is B

An autotroph is what produces food mainly for itself (ex. Grass) and then herbivores are what eat it since they only eat plants (ex rabbit) and then a carnivore
the answer is b!!! have w good day

Describe how an ecosystem with high biodiversity might look compared to an ecosystem with low biodiversity.

Answers

Answer:

High biodiversity, with many species present, is good. It usually means that an ecosystem is healthy and relatively undisturbed by humans. Low biodiversity is characteristic of an unhealthy or degraded environment. A mown lawn in a city park is an example of an ecosystem with low biodiversity.

The study of how gene expression is turned on and off and which considers the
interactions between DNA, RNA, proteins, and the environment is called

Answers

Answer:

epigenetics

Explanation:

Epigenetics is the study of how gene expression is turned on and off and which considers the interactions between DNA, RNA, proteins, and the environment .

What is Epigenetics?

Epigenetics is the study of how your behaviors and environment can cause changes that affect the way your genes work.

What are 3 factors that affect epigenetics?

Several lifestyle factors like diet, obesity, physical activity, tobacco smoking, alcohol consumption, environmental pollutants, psychological stress, and working on night shifts.

To learn more about Epigenetics ,here

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Why is the giant iguana a good example of Charles Darwin's theory of adaptive radiation, or the way a species adapts to its environment ?

O A. Giant iguanas live on the largest island in the Galapagos.

OB. Giant iguanas live on the smallest island in the Galapagos.

O C. Giant iguanas help each other survive.

OD. Giant iguanas are larger than other iguana species.

Answers

Answer:

A

Explanation:

They live on larger islands so they need to evolve to survive better on them.

The giant iguana a good example of Charles Darwin's theory of adaptive radiation, or the way a species adapts to its environment is Giant iguanas live on the largest island in the Galapagos.

What are the benefits of flattened tails?

The benefits of flattened tails are that or the difference in the tail shape is because Flattened tails are better for swimming than rounded tails. This is due to the difference in habitats of the marine and inland iguanas.

By natural selection, the nature of the species gradually changes to became adapted to the niche.This is due to natural selection.The marine iguanas of the Galapagos Islands feed on seaweed and algae. Marine iguanas have flattened tails while other species of iguanas that live inland on the Galapagos and on the South American mainland have rounded tails.

Therefore, The giant iguana a good example of Charles Darwin's theory of adaptive radiation, or the way a species adapts to its environment is Giant iguanas live on the largest island in the Galapagos.

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If a strategic mineral, such as uranium, is becoming depleted in the United States, where we look acquire this
mineral?

Answers

Answer:

China, Russia, Kazakhastan, Mexico, Nimibia, Greenland, South Africa, Canada, Australia

Explain how the investigation could indicate that chlorophyll is needed for photosynthesis. Include the role of chlorophyll in your explanation.

Answers

Chlorophyll is the green pigment found in the chloroplasts of leaves. It gives leaves their green colour and aids in the process of photosynthesis by trapping light needed for it.
The variegated leaf experiment is used to investigate that chlorophyll is needed for photosynthesis:
- Take a variegated leaf
- Take another leaf and don’t do anything to it (it’s going to act as a control plant)
- Place the leaves in different Petri dishes containing moist cotton wool
- Leave the Petri dishes in the sun for about 6 hours
- Carry out the iodine test for starch on both leaves by placing 2-3 drops of iodine solution on both leaves
- You’ll find that the control turns dark blue/black while the variegated leaf is stained yellow on the white parts but dark blue/black on the green parts.
The blue/black color shows that starch is present in the leaf meaning photosynthesis took place. The yellow color is just the color of iodine solution.
The white parts do not contain starch because there is no chlorophyll to trap sunlight needed in the process of photosynthesis. This shows that chlorophyll is necessary in the process of photosynthesis.

which feature of stem cells enable them to replace cells in tissues such as skin?

Answers

That is right!!!!! Hope that helped

The feature of stem cell which enable them to replace cell in tissues are that they can divide indefinitely to generate new cells and they can convert into the different types of cells that make up the body as they divide.

What is a stem cell ?

A stem cell is a cell that has the unique capacity to grow into different types of cells in the body.

They may be utilised in the future to replace cells and tissues that have been damaged or destroyed owing to illness.

Stem cells are classified into three types which are Embryonic stem cells, Adult stem cells, Induced pluripotent stem cells.

Embryonic stem cells provide new cells to an embryo as it grows and develops into a newborn.

Adult stem cells generate new cells as an organism matures and replace damaged ones.

Induced stem cells are stem cells created in the laboratory by scientists.

Learn more about Stem Cell here:

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i need help with this question

Answers

Research Question: How does various water types affect the growth of plants?

Independent Variable: Type of water

Dependent variable: plant growth

Constants: Time period (2 weeks)

Controls: type of plant, amount of soil, etc (anything you want to remain constant throughout).

Entre una planta alta de color purpura (AABB) con otras planta enana de color blanco (aabb), ¿cómo será el genotipo y el fenotipo de la F1 Y F2?

Answers

Answer:

- Alelos:  

Locus 1: A (alto); a (enano)

Locus 2: B (púrpura); b (blanco)

- Cruzamiento parental: AABB  x aabb

Genotipos F1: AaBb

- Cruzamiento F1: AaBb x AaBb

Fenotipo: 100% plantas altas púrpuras

- Genotipos F2:  AABB (1/16); Aabb (1/16); aaBB (1/16); aabb (1/16); AaBb (4/16); AABb (2/16); aaBb (2/16); AaBB (2/16); Aabb (2/16)

- Fenotipos F2: 9/16 A-B- (altas púrpuras); 3/16 A-bb (altas blancas); 3/16 aaB- (enanas púrpuras); 1/16 aabb (enanas blancas)

Explanation:

Un cruzamiento dihíbrido refiere a un tipo de cruzamiento entre dos parentales que difieren para  dos pares de alelos (AABB x aabb). Si consideramos dos loci de dominancia completa, un cruzamiento dihíbrido producirá una F1 heterocigota para ambos genes donde la progenie expresará ambos rasgos dominantes. Como resultado de la distribución independiente expresada en la segunda ley de Mendel, La F2 de este tipo de cruzamiento producirá un proporción fenotípica 9:3:3:1; es decir 9 individuos con ambos rasgos dominantes (A-B-), 3 con el rasgo uno dominante (A-bb), 3 con el rasgo dos dominante (aaB-) y 1 con ambos rasgos recesivos (aabb).

8. Materials essential for development are transported to a human fetus through the:
A. Fallopian tubes
B. Egg cell
C. Reproductive hormones
D. Placenta

Answers

Answer: D) Placenta

The placenta helps bring nutrients towards the fetus.

when a plant is not strong enough to support its own weight what is most likely the problem

Answers

Answer:

the roots are weak

Explanation:

because it can’t hold its weight

Describe the role of gravity in maintaining the atmospheric layer around Earth. I will mark as brainliest

Answers

Answer:

Hi so the answer is that Gravity pulls the gas molecules towards Earth's center. The pull of gravity is stronger closer to the center at sea level. Air is denser at sea level where the gravitational pull is greater. Gases at sea level are also compressed by the weight of the atmosphere above them.

Explanation:

I really hope i helped , pleaseeee give me brainliest , have a nice day and thank you in advance :))) .

Ammonia is commonly used as a fertilizer for plants. It is made when nitrogen gas and hydrogen gas react under specific conditions.
Consider the following reaction:
2 molecules of nitrogen (N2) react with 6 molecules of hydrogen (H2) to produce some amount of ammonia (NH3).
Complete the table below.

H = ?
N = ?

During this reaction, how many molecules of ammonia (NH3) are produced?

Answers

Answer:

2

Explanation:

NH3 = N(1) + H(3)

N2H6 = 2(NH3)

= 2

Answer:

4

Explanation:

Just do the math Zoey -.-

The only function of the cytoplasm is to protect the organelles.
ЕОО
True
False

Answers

Answer:

false

Explanation:

because the cytoplasm also contains substances like enzymes and also regulates the water in and out of the cell

Answer:

false

Explanation:

4. Diagrams, tables and graphs are used by scientists mainly to
predict the independent variable
test a hypothesis
design a research plan for the experiment
organize data

Answers

Answer:

word to my dead When a long-term environmental change occurs, certain individuals in a population will be better adapted for the new environment than others. These individuals will be more likely to survive and pass on their traits to their offspring. Over many generations, these favorable adaptations build up in a population. This may lead to speciation, which is the development of a new species.

Explanation:

which part of a nucleotide makes it possible for a nucleic acid to be a unique code

Answers

Answer:

RNA nucleotides may also bear adenine , guanine and cytosine bases, but instead of thymine they have another pyrimidine base called uracil (U) . as shown in the figure above, each base has a unique structures with its own set of functional groups attracted to the ring structure...

The digestive system and the excretory system both excrete waste.

Answers

Answer:

The answer is

The digestive system excretes a solid waste and the excretory system excretes a liquid waste.

hope it will help you

Answer:

The digestive system excretes a solid waste and the excretory system excretes a liquid waste.

Explanation:

I Know I am in the future

How red blood cell adapt to function

Answers

Answer:

Red blood cells haveadaptations that make them suitable for this: they contain haemoglobin - ared protein that combines with oxygen. they have no nucleus so they can contain more haemoglobin. they are small and flexible so that they can fit through narrow blood vessels.

Explanation:

Hope It Helps

Help me with numbers 44 and 45

Answers

Answer:

44- object 2

45- objects 1 and 4

Explanation:

44- object 2 push force is higher one the left then on the right

45- object 1 cancel eachoher because they have the same push force as eachoher and object 4 don't move at all because they don't have any push force on either side

Gene expression establishes that genes will be turned on to build a protein.

A. TRUE

B. FALSE

Answers

The answer for this question is gonna be true

Answer:

A. TRUE

Explanation:

Gene expression establishes that genes will be turned on to build a protein.

in order to increase chances of survival in a changing environment, it is important for a species to have

Answers

Answer:

One key way by which species evolve over time in response to changes in environmental conditions is adaptation by natural selection acting over generations. Characteristics that aid in effective survival and reproduction in the new environment grow more prevalent, while those that do not become less prevalent.

Explanation:

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