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jarptica [38.1K]
3 years ago
11

A scientist investigates the toxic effects of a chemical on the brain.

Biology
1 answer:
disa [49]3 years ago
8 0
The answer is C. Keeping the chemical at a constant temperature
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A set of identical twins are together in an introductory biology class. The unit of study is DNA and its structure. The teacher
Hunter-Best [27]

In identical twins, alleles are identical and the order of the bases on the interior of the DNA molecule is identical (Options C and E). It is because genetic material is identical.

<h3>What are identical twins?</h3>

Identical twins refer to individuals produced by the same zygote cell, i.e., they are monozygotic twins.

Since these individuals are produced by the same zygote cell, their genetic material (DNA) will be identical.

Identical twins are useful to understand the exact role of genetics and environment in a given phenotypic trait.

Learn more about identical twins here:

brainly.com/question/17180337

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2 years ago
True or False - Could Usain Bolt be faster?<br> Question 10 options:<br> True<br> False
IRINA_888 [86]
Yes but it depends like which way are you talking about.
6 0
3 years ago
What are convergent boundaries?
boyakko [2]

Answer:

Explanation:

A convergent boundary (also known as a destructive boundary) is an area on Earth where two or more lithospheric plates collide. One plate eventually slides beneath the other, a process known as subduction. The subduction zone can be defined by a plane where many earthquakes occur, called the Wadati–Benioff zone.[1] These collisions happen on scales of millions to tens of millions of years and can lead to volcanism, earthquakes, orogenesis, destruction of lithosphere, and deformation. Convergent boundaries occur between oceanic-oceanic lithosphere, oceanic-continental lithosphere, and continental-continental lithosphere. The geologic features related to convergent boundaries vary depending on crust types.

Plate tectonics is driven by convection cells in the mantle. Convection cells are the result of heat generated by radioactive decay of elements in the mantle escaping to the surface and the return of cool materials from the surface to the mantle.[2] These convection cells bring hot mantle material to the surface along spreading centers creating new crust. As this new crust is pushed away from the spreading center by the formation of newer crust, it cools, thins, and becomes denser. Subduction begins when this dense crust converges with less dense crust. The force of gravity helps drive the subducting slab into the mantle.[3] As the relatively cool subducting slab sinks deeper into the mantle, it is heated, causing hydrous minerals to break down. This releases water into the hotter asthenosphere, which leads to partial melting of asthenosphere and volcanism. Both dehydration and partial melting occurs along the 1,000 °C (1,830 °F) isotherm, generally at depths of 65 to 130 km (40 to 81 mi).[4][5]

Some lithospheric plates consist of both continental and oceanic lithosphere. In some instances, initial convergence with another plate will destroy oceanic lithosphere, leading to convergence of two continental plates. Neither continental plate will subduct. It is likely that the plate may break along the boundary of continental and oceanic crust. Seismic tomography reveals pieces of lithosphere that have broken off during convergence

3 0
2 years ago
Read 2 more answers
What is the impact of the depletion of fishing stocks?
ziro4ka [17]
It is the same as creating more pests or setting up dominant species which upset the ecological food pyramid leading to decimation of trophic levels or predators and energy cycling. Fishes feed on microscopic algae and animals the primary base of the food chain in water, if they are not checked they will choke the rivers and oceans causing toxic waters. Fish feed to contain them, in the process they grow and increase in numbers but their population is checked by bigger fishes and so on till it reaches a top predator which is usually a large animal.
3 0
3 years ago
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has recently taken up weight lifting and his friends at the gym mistakenly believe they should eat more protein to build muscle.
faltersainse [42]

Complete Question

Ruben Ward has been weight lifting and eating a high protein diet. Below is Ruben's profile and what he ate for a day. He entered his profile information and food intake into Diet & Wellness Plus and then pulled the Diet & Wellness Plus Reports. View Ruben’s Intake vs Goals and Macronutrient Ranges Reports and then answer the questions below. Profile for Ruben Ward 1. Age: 19 years old 2. Gender: Male 3. Height: 5 ft, 8 inches 4. Weight: 205 lbs 5. Non-Smoker 6. Activity Level: Active

Ruben has recently taken up weight lifting, and his friends at the gym mistakenly believe they should eat more protein to build muscle. The DRI for protein for healthy adults is 0.8 g per kg body weight. If Ruben weighs 205 lbs (93 kg), how many grams protein per kg body weight did he eat on this day?

a. 5.37 g/kg

b. 10.33 g/kg

c. 3.55 g/kg

d. 4.88 g/kg

Answer:

c. 3.55g/kg

Explanation:

RDI means Recommended Dietary intake. It is the required amount of a nutrient expected to be taken by an individual for optimal health.

The Recommended Dietary Intake I'd protein falls withing the range of 0.8 grams per kg to 1.8 grams per kg

For Reuben

He weighs 93 kg

If Reuben consumed 330 grams of protein, his grams of protein per kg body weight is

330 grams ÷ 93kg

= 3.55g/kg.

4 0
3 years ago
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