Answer:
Gender affects blood pressure, blood pressure is higher in men than in women at similar ages.
pulse pressures (PP) were higher in males than in females among adults less than 45 years old. Diastolic blood pressures were lower among adult females across all age categories.
Explanation:
Please mark brainliest I only need one more
According to the geological time scale, ______ evolved after the first insects evolved. mammals, bacteria, cells with a nucleus, or, multicellular organisms?
Answer:
Mammals would be the correct answer.
Explanation:
Answer:
mammals is correct
Explanation:
taking the quiz got it right.
PLEASE...THIS IS MY SCIENCE FINAL!!!
Which of the following is a function of plant roots?
A) Acts as an anchor to hold the plant in the soil
B) Water and nutrients enter the plants from the roots
C) Absorbs oxygen for respiration
D) All of the above are functions of roots
Answer:
D
Explanation:
The roots act as an anchor and take in minerals/nutrients while the roots also take in oxygen. But for the Water, the leaves, roots and stem take in the water so all 9f the above.
On April 20, 2010, an explosion on the Deepwater Horizon Macondo oil well drilling platform released 4 million barrels (636,000 cubic meters) of oil into the Gulf of Mexico. It took scientists and engineers nearly three months and several different attempts to cap the well. The Macondo oil well was located 1524 m (5000 feet) below the surface of the water, about 80 km (50 miles) off the coast of Louisiana. The spill affected 2113 km (1300 miles) of shoreline along the coasts of five states. Most crude oil contains 84–87% carbon by weight. Scientists have not yet fully assessed the environmental impact of the accident.
Reducing our dependence on petroleum is a difficult task, so policy makers are organizing it into smaller, simpler problems that can be solved more easily. Choose two of the solutions below that may help reduce our dependence on fossil fuels.
a
Researching alternative fuels to petroleum, such as ethanol.
b
Increasing taxes or fees to help pay for cleanup costs.
c
Requiring rooftop gardens to be built on all new buildings to reduce air pollution.
d
Developing transportation methods that do not require the use of petroleum products.
Answer:
I believe your answer is. A
Explanation:
What's the main reason why cell specialization is important?
Question 12 options:
It allows multicellular organisms to perform many distinct functions.
It allows unicellular organisms to perform many distinct functions.
It generates totipotent cells.
It creates cells at a faster rate.
Answer:
It allows multicellular organisms to perform many distinct functions.
Explanation:
Cell specialization is important primarily because it allows multicellular organisms to perform many distinct functions. Cell specialization isn’t important in unicellular organisms, because it doesn’t occur. Cell specialization isn’t important primarily for creating cells faster, and it doesn’t generate totipotent cells. Rather, totipotent cells are the stem cell progenitors that allow cell specialization to occur.
It makes it possible for multicellular creatures to carry out a wide variety of unique roles. Therefore, option (A) is correct.
What is cell specialization?The transformation of a stem cell into a differentiated cell type is accomplished by a process known as cellular differentiation. Typically, the cell will transform into a type that is more specialized.
The primary reason why cellular specialization is so important is that it enables multicellular organisms to carry out a wide variety of diverse jobs. Because it does not take place in unicellular creatures, the process of cell specialization is irrelevant to their biology. The primary reason why cell specialization is not crucial is that it does not produce totipotent cells, nor does it speed up the process of making new cells. Instead, totipotent cells are the progenitors of stem cells, which are the cells that can differentiate into specialized cell types.
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Why do countries not convert from the use of oil to solar energy?
Solar energy is more difficult to use than oil to make electricity.
It requires more work to use solar energy to make electricity.
Solar energy is a limited resource.
It is more expensive to create solar energy than use oil for making electricity.
Answer:
It is more expensive to create solar energy than use oil for making electricity.
Explanation:
Solar energy is a renewable source of energy from the sun. It is the most powerful and eco-friendly source of energy, however, many countries still do not use this source of energy in creating electricity. This is because the technology behind using solar energy to create electricity is very expensive in comparison with the use of oil.
In as much as solar energy is always readily available everywhere and everyday (natural), building the technology to make it generate electricity is huge. Hence, countries stick to the use of oil, which is way cheaper to operate.
plants have the ability to make there own growth ______while heterotrophs must consume theirs.
Answer:
by producing it/photosynthesis
Explanation:
Plants produce their food for growth through a process called photosynthesis. This is the process of where where plants transform water, sunlight, and carbon dioxide into oxygen, and simple sugars that the plant uses.
Answer:
Encyclopedic entry. An autotroph is an organism that can produce its own food using light, water, carbon dioxide, or other chemicals. Because autotrophs produce their own food, they are sometimes called producers.
Explanation:
Think Critically: Use your knowledge of food chains and energy pyramids to explain why fewer lions than gazelles live on the African plains?
what type of cells produce gametes,sperm, and egg cell
Answer:
They are also referred to as sex cells. Female gametes are called ova or egg cells, and male gametes are called sperm. Gametes are haploid cells, and each cell carries only one copy of each chromosome. These reproductive cells are produced through a type of cell division called meiosis.
Explanation:
Answer:
sex cells.
Explanation:
Female gametes are called ova or egg cells, and male gametes are called sperm. Gametes are haploid cells, and each cell carries only one copy of each chromosome..
Good luck.
How does the cell membrane control what comes in and out of the cell?
The cell membrane contains pores that let all molecules in and out of the cell.
The cell membrane does not let anything in or out of the cell.
The cell membrane contains small pores that filters in needed substance and filters out waste product.
The cell membrane does not let substance in or out of the cell.
Answer:
The cell membrane contains pores that let all molecules in and out of the cell.
Explanation:
I believe it is this one not positive though
Answer:
I think its C. The cell membrane contains small pores that filters in needed substance and filters out waste products.
Explanation:
Sorry if it wrong it just makes the most sense.
Which process will the bacteria use to obtain energy?
A. Cellular respiration
B. Photosynthesis
C. Lactic fermentation
D. Alcoholic fermentation
I think it’s B someone tell me if it’s right
Answer:
B
Explanation:
Tu as raison!
Though some bacteria also feed off of dust, dead skin cells, corpses, human waste, etc, most survive from photosynthesis and no form of decomposition capable by bacteria is a possible answer.
Which action would best demonstrate that a scientist is being creative?
using prior knowledge to solve problems
O requiring evidence and thinking logically
O taking a closer look at the natural world
O following strict rules when using human test subjects
Answer:
using prior knowledge to solve problems
Explanation:
Just took the test and it showed the correct answer.
Letter A represents a wave’s
Answer:
d wave length
Explanation:
Which of the following activities depend upon the availability of supplies of freshwater?
a agriculture
b bathing
C drinking
d all of the above
Fresh water is found in glaciers, ponds, rivers, etc. The activities that depend upon availability of supplies of fresh water includes: agriculture, bathing, drinking, laundry etc.
What is freshwater?Freshwater is a source of water which is renewable. It is replenished by a process called water-cycle.
There are multiple uses of fresh water. Some can be listed as:
For irrigation in agriculture.Industrial use.Household uses.Recreational activity.Thus, the correct option is d.
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Please help I wasn't paying attention. I'll MARK THE BRAINLIEST.
Choose THREE: What is the THREE roles/functions of the nervous system?
A.) Receiving information
B.) Responding to information
C.) Maintaining homeostasis
D.) Transforming food into energy for the body
2.) TRUE/FALSE: You can move without your nervous system.
A.) True
B.) False
3.) TRUE/FALSE: All nervous system responses are voluntary or under your control.
A.) True
B.) False
4.) A change or signal in the environment that makes the nervous system react is called a:
A.) Stimulus
B.) Response
C.) Nerve Impulse
D.) Synapse
5.) If you touched a hot object, what would the stimulus be?
6.) If you touched a hot object, what would the response be?
7.) Give an example of a stimulus and describe your body's response.
1. a,b and c
2. false
3. false
3. Stimulus
4. Receptor in the skin detects a stimulus (the change in temperature). Sensory neuron sends impulses to relay neuron. Motor neuron sends impulses to effector.
5. skin receptors quickly send nerve impulses (electrical) to the spinal cord (central nervous system) via sensory neurons
6. tropism, in plants is phototropism (or light response). Plants grow towards light sources, and if the direction of light is changed, the plant will also change its direction of growth to accommodate for survival.
Answer:
A,B,C
FALSE
FALSE
STIMULUS
PULL YOUR HAND AWAY
The ringing of a telephone prompts to answer a call.
Explanation:
The sensory neurons found in the receptor organ ( which is the ear ) will detect the ringing of the telephone, and will therefore transmit a nervous message to the central nervous system .The brain interprets the nervous message , and then sends a message through the motor neurons to the effector organ , which in turn will respond by answering the call .
Describe the two fields of study comparative and molecular
Answer:Comparative anatomy :compares fossilised structures to living organisms and compares the limbs of different organisms
Molecular biology: Compares cells of organisms and compares the Genomes of organisms
Explanation: Answered and got it right
Which best describes the structure of DNA?
A. Nucleic acids arranged in a double helix
B. A retread with two sister chromatids
C. Chromosomes linked in a loop
D. Alleles held together by genes
The distance that wind blows across an area of the sea to generate waves is the_________.
a)trough
b)wave period
c)fetch
d)sargassum
Answer: C-fetch
Explanation:
Answer:
Fetch.
Explanation:
Fetch, area of ocean or lake surface over which the wind blows in an essentially constant direction, thus generating waves. The term also is used as a synonym for fetch length, which is the horizontal distance over which wave-generating winds blow.
Which of the following is the best definition of niche?
A. A group of organisms that produce fertile offspring
B. A group of organisms that interact within an ecosystem
C. All of the resources a species uses within its ecosystem
D. The place where a particular plant or animal lives
Answer:
C.
Explanation:
A niche refers to the way in which an organism fits into an ecological community or ecosystem. How an organism interacts with it's environment. So, I believe the answer to be C.
Hope this helps. :)
The best definition of niche is the place where a particular plant or animal lives. The correct option is D.
What is a niche?A niche is a term used for a place where the organism lives comfortably, and the environmental conditions are available for them. They use the resources and interact with other organisms.
It is a place where plants and animals live together and interact with each other.
Thus, the correct option is D. The place where a particular plant or animal lives.
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When listing the levels of organization in organisms from least complex to most complex, which level is just below organs in complexity?
Answer:
D tissues
Explanation:
What is weather?
A. What’s happening in space at a time and place
B. What’s happening in our atmosphere at a time and place
C. The average weather over many years
D. The average temperature over many years
Answer:
The answer would be B.
Explanation:
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Which statement best describes black holes?
Black holes are the remnants of dead, massive stars
Black holes are the remnants of planets that broke up from moving to fast.
Black holes are young stars that have not yet begun to shine.
Black holes are theoretical objects and have never been found.
Answer:
the last one
Explanation:
D. Black holes are theoretical objects and have never been found.
How many pairs of chromosomes does a human have in their liver cells
Answer: 46
Explanation:
In a normal human lever cell there are 46 chromosomes, because liver cells are somatic, so they are diploids, thus they have a full set of chromosomes.
A -Weight of water collapses lime stone below it, water drains into the sinkhole
B-pollution due to factories, water evaporates quickly
C-High atmosphere temperature, water evaporates quickly
D-natural absorption of water by the land, water drains into the Aquifer
3. Psychologists like to experiment on other organisms in their immediate environment, so Jenny
decided to perform a few experiments on her kitty, Precious. Jenny had a little clicker that makes
a loud 'CLICK' sound. She walked around the house, randomly clicking it while Precious rested in
the living room. Then Jenny sat down with Precious, and used the flash on her camera to flash a
bright light at the same time she clicked. Precious blinked because of the flash, and looked mildly
annoyed. Jenny repeated this process with her 4 times, then clicked the clicker, without using the
flash. She still blinked!
Neutral Stimulus:
Unconditioned Stimulus:
Unconditioned Response:
Conditioned Stimulus
Conditioned Response:
Answer:
Unconditioned Stimulus : Bright flash
Unconditioned Response : Eye blink
Neutral Stimulus/Conditioned Stimulus : Clicking sound
Conditioned Response : Eye Blink
Explanation:
which rocks are examples of chemical sedimentary rock check all that apply
Answer:
Shale and sandstone
Explanation:
Answer:
Clastic sedimentary rocks such as breccia, conglomerate, sandstone, siltstone, and shale are formed from mechanical weathering debris. Chemical sedimentary rocks, such as rock salt, iron ore, chert, flint, some dolomites, and some limestones, form when dissolved materials precipitate from solution.
Explanation:
Which evidence supports the claim that Earth’s continents formed during Precambrian time?
Compaction caused rock to cool and rise to form pieces of crust.
Earth collided with a large object and threw material onto Earth’s surface. Collisions with comets added land masses to Earth’s surface.
Earth’s surface cooled, causing rocks to cool and harden.
Answer:
Earth’s surface cooled, causing rocks to cool and harden.
Explanation:
explanation
The evidence that best supports the claim is ; ( D ) Earth's surface cooled, causing rocks to cool and harden
The precambrian time is the period which the earth is believed to have begin its formation, because during this period there were rocks believed to have formed from the cooled molten state of the earth and the presence of oceans also believed believed to have been formed from the cooling of water vapor which was present in the atmosphere.
Hence we can conclude that the evidence that best supports the claim is Earth's surface cooled, causing rocks to cool and harden.
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Which of the following correctly describe magnetic field lines?
Answer:
The answer is B
Explanation:
I hope that help :)
Answer:
Actually it is all of them
Explanation:
Which structure will form when a primitive cell engulfs an aerobic bacterium?
Answer:
Mitochondria
Explanation:
This was the first endosymbiotic event during our primitive cell basically engulfed an aerobic bacteria which later formed into mitochondria. This is why mitochondria has its own DNA as well (called the mitochondrial DNA)
Answer:
Mitochondria
Explanation:
Which of the following statements is TRUE?
Multiple Choice
Peanut butter is an empty-calorie food,
A megadose of vitamin C is within the range of safe intake for the nutrient.
Most foods are mixtures of nutrients.
A healthy diet supplies 90% of its calories from protein-rich foods.
Most foods are mixtures of nutrients.
Shivering and sweating are two techniques that mammals use to
a) adapt to the temperature
b) develop a rise in body temperature
C) maintain homeostasis
d) use excess energy
Answer:
c.maintain homeostasis