Answer:
Monocercomonoides isn’t a living fossil, a holdout from the days of the earliest eukaryotes, Karnkowska notes. Its closest relatives still have small mitochondria, suggesting that it jettisoned the organelles fairly recently in evolutionary terms. She and her colleagues speculate that more eukaryotes missing mitochondria await discovery.
Explanation:
Answer:
Monocercomonoides isn’t a liviing form
Its closest relatives still have small mitochondria,
A student uses a microscope to observe cells in the root tissue of an onion. He
concludes that the cells are reproducing by mitosis.
Which hypothesis is supported by his conclusion?
a. The root tissue cells all have the same set of chromosomes.
b. The root tissue cells each have a unique genetic make-up.
c. The root tissue cells produce identical gametes..
d. The root tissue cells split to form stem cells.
The correct answer is option a. The root tissue cells all have the same set of chromosomes as it clearly explains the hypothesis.
Onions (Allium cepa L.) have eight relatively large chromosomal pairs (2n = 16) that can easily detect CA.
Mitosis creates two identical daughter cells, each containing the same number of chromosomes as the parent cell. In contrast, meiosis produces four unique daughter cells, each with half the number of chromosomes in the parent cell. Therefore, during the mitotic cell cycle, the DNA content per chromosome doubles in the S phase (each chromosome begins as a chromatid and becomes a pair of identical sisters in the S phase). However, the number of chromosomes remains the same.
How many chromosomes do cells have after the G1, S, and M phases?Onion root cells have chromosome 16 in each cell after the G1, S, and M phases.
Thus it concluded that mitosis causes root tissue cells to all to have the same set of chromosomes.
To know more about mitosis refer to the link :
https://brainly.com/question/19058180
(GIVING BRAINLIEST!! Who ever trys to steal the points will get reported)
Why do the northern United States get more snow than the southern states?
A) Because there are colder temperatures in the winter months in the northern states
B) Because there are colder temperatures in the winter months in the southern states
C) Because there are warmer temperatures in the summer months in the northern states
D) Because there are warmer temperatures in the summer months in the southern states
Answer:
A
Explanation:
because it doesn't snow if it is warm so c and are wrong and the question said why does the northern states get more snow not southern so b is wrong so A is the correct answer
Do fitness (as used in biology) and survival have the same meaning? Why or why not?
Answer:
No
Explanation:
They are not the same. The fittest individual is not necessarily the strongest, fastest, or biggest. Fitness also applies to the ability to find a mate and produce offspring. Survival is the form that an individual will leave the most copies of itself in the subsequent generations
What is a nucleus. *Use the picture provided.*
Answer:the central and most important part of an object, movement, or group, forming the basis for its activity and growth.
Explanation: a living thing like that dude
Answer/Explanation:
A nucleus is the most important part of a group(or object). Rick Astley, the singer provided in the picture is the sole part of his famous song "Never Gonna Give You Up."
define homologous structure in YOUR OWN WORDS
Answer:Homologous structures are similar structures that evolved from a common ancestor. Learning Objectives. Describe the connection between evolution and the appearance of homologous structures.
Explanation:A common example of homologous structures is the forelimbs of vertebrates, where the wings of bats and birds, the arms of primates, the front flippers of whales and the forelegs of four-legged vertebrates like dogs and crocodiles are all derived from the same ancestral tetrapod structure.Following are some examples of homology: The arm of a human, the wing of a bird or a bat, the leg of a dog and the flipper of a dolphin or whale are homologous structures. They are different and have a different purpose, but they are similar and share common traits.Homologous structures are structures that are similar in related organisms because they were inherited from a common ancestor. These structures may or may not have the same function in the descendants. Figure below shows the hands of several different mammals. They all have the same basic pattern of bones.Homologous structures share a similar embryonic origin. Analogous organs have a similar function. For example, the bones in a whale's front flipper are homologous to the bones in the human arm.
What limits organisms from reaching an infinite size within an ecosystem?
⋆ ˚｡⋆୨୧˚ ˚୨୧⋆｡˚ ⋆Answer:⋆ ˚｡⋆୨୧˚ ˚୨୧⋆｡˚ ⋆
Resources.
⋆ ˚｡⋆୨୧˚ ˚୨୧⋆｡˚ ⋆Explanation:⋆ ˚｡⋆୨୧˚ ˚୨୧⋆｡˚ ⋆
Resources such as food, water, light, space, shelter and access to mates are all limiting factors. If an organism, group or population does not have enough resources to sustain it, individuals will die through starvation, desiccation and stress, or they will fail to produce offspring.
Can you please tell me an explanation of what happens during the anaphase stage of mitosis?
Please dont copy and paste
Answer:
The centromeres split and the sister chromatids are pulled to opposite poles of the cell. The chromosomes reach the poles and stop moving.
Explanation:
An ice age is a period in which large areas of Earth are covered in ice. Throughout its history, Earth has experienced at least five such ice ages.
Ice is white in color, so it reflects most of the sunlight it receives. Imagine that an ice age were to happen again on Earth. Which statement
best explains how Earth's temperature would be affected?
Refer to the below image for assistance.
Answer:
A
Explanation:
The earth would be covered with ice, therefore there would be no soil, water, or rocks to absorb the sunlight.
Identify the type of asexual reproduction shown in the image.
Answer:
Image???????????????
Answer:
you don't have the image
Explanation:
?????
The process of osmosis is best illustrated by the movement of a. water into root hair cells b. oxygen intro red blood cells c. carbon dioxide through stomates d. glucose through phloem
Answer:
a. water into root hair cells
Explanation:
Osmosis can be defined as a process which typically involves the movement of a solvent molecule such as water through a semi-permeable from a region of high concentration to a region of lower concentration.
Hence, the process of osmosis is best illustrated by the movement of water into root hair cells because they are used by the plants to absorb water from the soil.
Evosystems have different levels of organization. A group of similar organisms makes up a __________, which, along with other types of organisms, makes up a ________.
Answers:
A. Species, population
B. habitat, ecosystem
C. Population, community
D. population, habitat
group of the same kind of individuals in a given space at a given time is known as a(an) _______________.
Air, water, soil and light are examples of ___________ factors in an ecosystem.
In a food chain, how much energy would be passed to the secondary consumers if you had 1,000 producers?
True or False. Dead leaves on the forest floor become new soil through the action of decomposers.
True or False. Heterotrophs get the energy to produce their own food from the sun.
An herbivore is also classified as a __________ consumer.
A food ________ shows all of the feeding relationships in an ecosystem.
All of the plant and animal populations living and interacting in a given physical environment is known as a(an) ____________.
True or False. An ecological niche is a feeding pattern exhibited by species that form a community.
The path in which energy is transferred from one organisms to another through feeding patterns is known as a(an) _________________.
Answer:
Dead leaves on the forest floor... is true
I need help can I please pleaseee get it and make sure correct I’m taking a test .... I’ll mark the brainliest
Answer:
lipid
Explanation:
Which of these would provide the best evidence for the theory of evolution?
A
fossils of ancient tigers that had larger ears than tigers have today
B
oil found deep under the ice sheets of Antarctica
C
a person’s hair growing faster in the summer than it does in winter
D
ancient maps that show that countries had different borders long ago
Answer:A
Explanation:
The meaning of evolution-the process by which different kinds of living organisms are thought to have developed and diversified from earlier forms during the history of the earth.
So, B is incorrect since it is talking of the present. C, shows the growing of hair, but has no answer to evolution, since it does not show an organism growing from the past to present. D, shows evolution of land but no “living organism”
In conclusion, the best answer is A.
HELP DUE IN 5 MINS
What do you think are the three biggest changes a household could make to reduce its use of water?
Answer:
turn water of when brushing teeth, take shorter showers and dont waste water
Explanation:
Which sequence of DNA bases would pair with this partial strand ATG TGA
CAG?
GTA AGT GAC
CAT TCA CTG
TAC ACT GTC
ATG TGA CAG
PLEASE PLEASE ANYONE HELP ME PLEASE
Answer Answer. TAC ACT GTC – is the correct pair sequence.
Explanation:I tried my best I dont really know anything about this but I just wanted to help anyway.Hope this helps you out.
*****help please!!!!!
Answer:
I believe your answer is C.
List six alternative energy sources.
Answer:
Tidal power, solar power, energy, wind power, biofuel, and hydrogen are six alternative energy sources.
All vascular plants have _________
Question 3 options:
spores and seeds that are enclosed within cones for protection.
flowers that attract pollinators to aid in fertilization and reproduction.
tissues that allow transport of water a nutrients to all parts of the plant.
all of these
All vascular plants have the following properties:
Spores and seeds that are enclosed within cones for protection.Flowers that attract pollinators to aid in fertilization and reproduction.Tissues that allow transport of water and nutrients to all parts of the plant.What are Vascular plants?These are plants which possess true stems, leaves, and roots. They are
also referred to as tracheophyte. They have tissues which help to conduct
photosynthetic products.
They also possess tissues that allow transport of water and nutrients to all
parts of the plant.
Read more about Vascular plants here https://brainly.com/question/1164709
Fill in a word that correctly completes the sentence.
The nucleus is a large, oval organelle in a cell. It contains the cell’s genetic material in the form of
__________and controls many of the cell’s activities.
Answer:
Known as the cell's “command center,” the nucleus is a large organelle that stores the cell's DNA (deoxyribonucleic acid). The nucleus controls all of the cell's activities, such as growth and metabolism, using the DNA's genetic information.
look at image for question
Answer:
xd
Explanation:
the gypsy moth is a pest species whose larvae feed on the leaves of hardwood trees. the population size of gypsy moths naturally changes in cycles. as a result, the amount of defoliation caused by the moths also fluctuates. which statement describes how the change in size of the gypsy moth population from 1972 to 1981 most likely affected the ecosystems represented by the maps?
Answer:
where are the choices?
Explanation:
Plan a controlled experiment to investigate how much the temperature of a large mass and a small mass of cold water changes when hot water is added. Assume you have access to water, containers, ice, a heat source, a scale, and thermometers. Summarize your experiment in a few sentences.
Plz help >` '
Answer:
The small mass got hotter than the large mass. I think the main reason is because the smaller the mass is, the less time it takes to heat up.The larger mass took a while to heat up, while the smaller mass heated up quickly.
Explanation:
This is what I put, please mark me as Brainliest :)
Good Luck! <3
Answer: The small mass heated up more quickly than the large mass. The main explanation, in my opinion, is that heat-up times are shorter the smaller the mass is. The smaller mass warmed up instantly while the larger mass took a while.
Explanation:
Hope this helps :)
You have been tracking an adult female otter who weighs 25 kg. How many kilocalories must she consume each day to maintain her body weight?
Answer: 62.5 kilocalories
Explanation:
Otters are a subfamily of carnivorous mammals which consume a variety of animals such as amphibians, crustaceans, fish, snails, water insects, worms, birds, turtles, frogs and aquatic invertebrates (insects). They are great swimmers which helps them look for food, and they can close their nostrils being able to stay underwater for up to 4 minutes.
A calory is an unit of measurement of the energy found in food which is defined as the unit of thermal energy equivalent to the amount of heat needed to raise the temperature of 1 gram of water by 1 degree Celsius. For example, if a certain food provides 300 calories, this is the energy that the body could receive when consuming it.
To maintain its weight, the female otter must consume 250 calories per kilogram of body weight per day. So if the otter has a weight of 25 kilograms, then 250*25= 6250 calories (or 62.5 kilocalories) needed per day to maintain the weight.
Which feature of the layers of Earth contributes to the various geological events?
The crust being made of a single layer all over
The crust being of same thickness all over
The lower mantle being made of solid rock
The lower mantle being relatively hotter
Answer:
D: The lower mantle being relatively hotter
Explanation:
Answer:
d
Explanation:
BIOLOGY STUDENTS CLICK MY QUESTION PLEASE
Three plants were grown to study the effects of nitrate and magnesium ion deficiency on their development. They were kept in the same conditions, except for the types of minerals supplied.
Use
Plant A was provided with all essential minerals.
Plant B was given all minerals except nitrate ions. Plant C was given all minerals except magnesium ions. State three conditions, other than water and the concentration of mineral ions, that would need to be kept the same for all the plants, in order to make the investigation a fair test
Answer:
Periods of light-timeTemperatureSubstrate/Soil typeExplanation:
Controlled variable: Variables that are controlled and have no influence on the results of the experiment. These variables do not affect the change in the dependent variable values.
These variables must be the same for all the subjects or groups (control and experimental). In the case of plants, controlled variables are probably those needed by the plants to correct development.
All plants should be exposed to the same period of light-time and the same temperature. Also, the substrate or soil where the plants are growing should be the same.
Which of the following is NOT a property of an acid?
A An acid is corrosive.
B An acid turns red litmus paper blue.
C An acid reacts with metals and carbonates.
D An acid tastes sour.
Answer:
I am pretty sure the answer is B because A is true C is true and most people believe that D is true so if not B then D
Explanation:
What differentiates passive transport from active transport?
A. Proteins have a role in passive transport.
B. Molecules move down a concentration gradient during passive transport.
C. Passive transport involves molecules moving across the cell membrane.
D. ATP is needed for passive transport to occur.
Answer:b
Explanation:
Zara is sick in bed. Her mother brings her bowl of hot chicken soup for lunch. As her hot soup cools, Zara wonders what will happen to the temperature of the air in her bedroom. Does the temperature in her room increase, decrease. or stay the same?
QUICK!! I NEED AN ANSWER!!
The temperature in her room will stay the same. :))
Explanation!!
Convection transfers heat energy through gases. Meaning of there's more cool particles than hot, the hot particles will be replaced with cool ones!
I think :D
Good luck on whatever you're doing!! <3
4. Describe a symbiotic relationship involving plants and insects.
Answer:
Pollination
Explanation:
because both plant and pollinator or benefit from the relationship.
