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4 years ago

What is the scientific name for killer whales ?

Biology

2 answers:

VladimirAG [237]4 years ago

8 0

The answer to this question is Orcinus Orca

Gelneren [198K]4 years ago

4 0

Orcinus orca is the scientific name

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What are some of the benefits of breastfeeding for the neonate, besides nutritional value?

astra-53 [7]

Breastfeeding can reduce the mother's risk of breast and ovarian cancer, type 2 diabetes, and high blood pressure.

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2 years ago

A new microorganism is isolated from a lake and is placed into a solution of KCl. The voltage difference across its membrane is

Leona [35]

Answer: $\Delta U=$ 1.922x10⁻²⁰ Joules

Explanation: Electric Potential Energy (U) is the energy a charged object has due to its location in an electric field and it will only exist with the object is charged.

Voltage or Electric Potential Difference (V) is external work done to move a charge from one point to another in a electric field.

These terms have a relationship, which is given by:

$\Delta U=q\Delta V$

where

q is the charge

Proton is positive and has a charge of 1.6x10⁻¹⁹C.

Unit for potential energy is Joule (J). The relation between mV and J is

1mV = 10⁻³J

Then:

V = 120x10⁻³

V = 0.12

So, for a proton to move from the negative side of a membrane to the positive:

$\Delta U=q\Delta V$

$\Delta U=1.6.10^{-19}.0.12$

$\Delta U$ = 1.922 x 10⁻²⁰

Energy necessary to transport a proton from negative side of the membrane to the positive is 1.922 x 10⁻²⁰J.

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3 years ago

A species of flowering plant produces vibrant blue flowers. The flowers attract both pollinators that spread the plant’s pollen

ale4655 [162]

The answer is D “ to provide shade for the plant”

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3 years ago

How does the fossil record allow us to determine a common ancestor?

xxMikexx [17]

Answer:

We can see similarities in the autonomy of the organisms. The fossil record also creates a timeline to show which organisms came first. They can then categorize the fossils and look for evolutionary relationships.

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3 years ago

Cynthia, a 55 kg woman, is training to run a marathon. How many grams of carbohydrate does she need during periods of heavy trai

lisov135 [29]

It is recommended to eat about 4 grams of carbs for every pound of body weight per day. So, it means that Cynthia (55 kg ~ 121 pounds) needs to take in about 500 grams of carbohydrates daily. Carbohydrates are important nutrient for marathon athletes to consume when preparing for a marathon because the skeletal muscles are fuelled mainly by glucose derived from carbohydrates. Glucose is stored in the form of glycogen to promote a decrease in fatigue during the race.

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4 years ago

Read 2 more answers